Wednesday, August 20, 2014

July 2014 Global Temperature Anomalies

July 2014 Global Temperature Anomalies

Headline:  Globe was 4th warmest on record in July 2014.

Data period 1880-2014 (135 years of data).

It was cooler than normal here in the center of the U.S. but it can easily be seen on the following map that most of the globe was painted in red, i.e. warmer than normal.

NOTE a climate summary is located BELOW the map.

LINK to previous 2014 monthly anomaly maps

July 2014 Summary From NCDC:
The average temperature across the world's land and ocean surfaces during July 2014 was 0.64°C (1.15°F) above the 20th century average, the fourth highest for July on record. The record warmest July occurred in 1998, with a temperature that was 0.73°C (1.31°F) higher than average. Eight of the 10 warmest Julys have occurred within the past 10 years (2002 also ranks among the 10 warmest). Additionally, July 2014 marked the 38th consecutive July and 353rd consecutive month with a global temperature above the 20th century average. The last below-average global temperature for July was July 1976 and the last below-average global temperature for any month was February 1985. With the exception of February (21st warmest), each month during 2014 to date has ranked among the four warmest compared to its respective month.
The global land surface temperature was the 10th highest for July in the 135-year period of record, but also the coolest since 2009, at 0.74°C (1.33°F) higher than the 20th century average. Nine of the 10 warmest July land surface temperatures have occurred during the 21st century. The highest July temperature occurred in 1998. As shown by the gridded Land & Ocean Temperature Percentiles map above, record warmth was particularly prevalent across parts of northern Europe and a swath of northwestern Africa. Overall, 32 countries across every continent except Antarctica had at least one station reporting a record high temperature for July. The United States and the Russian Federation each had several stations that reported record warm temperatures as well as several stations with record cold temperatures for the month. No other countries had stations that reported a record cold July temperature.

Friday, August 15, 2014

July 2014 Statewide Temperature, Precipitation Rankings

July 2014 Statewide Temperature and Precipitation Rankings:

Large contrasts occurred across the lower 48 states with top ten coldest July on record in the middle of the country and top ten warmest July out west.  As was the case with temperatures, precipitation rankings also showed large contrasts across the lower 48 states in July 2014. There are 120 years in the data record. The following is a summary of the July 2014 climate with two maps showing the rankings after the text.

from NOAA/NCDC
  • Climate Highlights — July 2014
  • The average temperature for the contiguous U.S. during July was 73.3°F, 0.3°F below the 20th century average, ranking near the middle of the 120-year period of record. This was the coolest July for the Lower-48 since 2009. The average maximum (daytime) July temperature for the contiguous U.S. was 85.8°F, 0.9°F below the 20th century average, while the average minimum (nighttime) July temperature was 60.8°F, 0.2°F above the 20th century average.
  • Below-average temperatures stretched from the Midwest, through the Mississippi River Valley, and into parts of the Southeast, where 13 states had one of their 10 coolest Julys on record. Arkansas and Indiana each had their coolest July on record. The Arkansas average temperature was 75.7°F, 4.6°F below the 20th century average and dipping below the previous record cold July that occurred in 1967. The Indiana average temperature was 69.2°F, 5.3°F below the 20th century average, slightly cooler than the previous record cold July of 2009. Although most corn producing areas in the Midwest have experienced excellent growing conditions during 2014, in northern areas, from North Dakota to Michigan, a cool and wet 2014 growing season might cause corn crops to not reach full maturation before harvest.
  • There were more than twice as many record cool temperatures during July (5,508) than record warm temperatures (2,605), with most of the cool temperature records (3,333) being cool daytime temperatures and most of the warm temperature records (1,882) being warm nighttime temperatures.
  • Above-average temperatures were observed from the Intermountain West to the Pacific Coast. Six states had one of their 10 warmest Julys on record, but no state was record warm for the month. The above-average temperatures, combined with long-term dryness, created ideal wildfire conditions across the West, where numerous large wildfires charred hundreds of thousands of acres during July.
  • Much of Alaska was warmer than average during July, especially along the western Gulf of Alaska coast and the Alaska Peninsula. Cold Bay had its warmest month of any month on record, with an average temperature of 55.8°F. Above-average precipitation was observed across interior regions of the state and the Alaska Panhandle, where Fairbanks and Juneau both had their second wettest July on record.
  • The July national precipitation total was 2.55 inches, 0.23 inch below the 20th century average, marking the 26th driest July on record.
  • Precipitation totals were mixed across the country during July. Above-average precipitation was observed in parts of the West, Southwest, Southern Plains, and the Northeast. In the Southern Plains, drought-stricken Wichita Falls, Texas saw its third wettest July on record and wettest since 1950. In the West, enhanced monsoonal flow boosted monthly precipitation totals from New Mexico to the Sierra Nevada Mountains. In the Northeast, Maine, Massachusetts, and New Hampshire each had one of their 10 wettest Julys on record.
  • Below-average precipitation was observed across the northern tier of the country, as well as parts of the Central Plains, Midwest, and the Southeast. South Dakota had its sixth driest July, while Alabama had its ninth driest.
  •  



Friday, July 18, 2014

State of the Climate Update

Headline:  2013 State of the Climate Report Released


Update from Ken Dewey, Applied Climate Science, School of Natural Resources, UNL.

From NOAA:  On July 17, the National Oceanic and Atmospheric Administration and the American Meteorological Society released the 2013 State of the Climate report. The report was led by editors from NOAA's National Climatic Data Center.

The report, a 24-year tradition encompassing the work of 425 authors from 57 countries, uses dozens of climate indicators to track patterns, changes, and trends of the global climate system. These indicators often reflect many thousands of measurements from multiple independent data sets. The report also details cases of unusual and extreme regional events, such as Super Typhoon Haiyan, which devastated portions of Southeast Asia in November 2013.








 The following image does NOT have any links.  It does list the various topics found in the report.


Thursday, July 17, 2014

June 2014 Statewide Rankings

The Contiguous U.S. had its 6th wettest and 33rd warmest (88th coldest) June on record (120 years of data, 1895-2014).

Nebraska had near normal average June temperatures but a top 5 wettest June on record. Much of the upper Midwest and Plains had a very wet month during June 2014.  The drought in the SW U.S. continued unabated.

 MAPS: See the statewide temperature and precipitation rankings maps below the text.

 From NCDC/NOAA:
  • Climate Highlights — June
  • The average temperature for the contiguous U.S. during June was 69.6°F, 1.1°F above the 20th century average, ranking as the 33rd warmest June in the 120-year period of record. The average maximum (daytime) June temperature for the contiguous U.S. was 81.8°F, 0.4°F above the 20th century average, while the average minimum (nighttime) June temperature was 57.4°F, 1.7°F above the 20th century average, tying as the 10th warmest June minimum temperature.
  • Above-average June temperatures were observed along the East Coast and into the Midwest. The Southwest was also warmer than average, where Arizona and California both had their 11th warmest June on record. No state had a top 10 warm June.
  • Near-average June temperatures were observed from the central Gulf Coast, through the Central Plains, and into the Northwest. Below-average temperatures were observed in the Northern Rockies and parts of the Northern Plains. No state had a top 10 cool June.
  • Interestingly, in much of the Lower Mississippi Valley and mid-South, afternoon temperatures were below average, while nighttime temperatures were much above average. This likely reflects a relatively wet and cloudy summer month acting to moderate both afternoon and overnight temperatures.
  • The June national precipitation total was 3.62 inches, 0.69 inch above the 20th century average, marking the sixth wettest June on record, and the wettest since 1989.
  • A significant portion of the contiguous U.S. — parts of the Northeast, Southeast, Midwest, and the Great Plains — had above-average precipitation during June. Eight states had one of their 10 wettest Junes on record, with Minnesota being record wet for the month. The 7.75 inches of precipitation averaged across Minnesota was 3.64 inches above the 20th century average, marking the wettest month of any month for the state, surpassing July 1897 and June 1914 when 7.32 inches of precipitation was observed. In Canton, South Dakota, 19.65 inches of precipitation fell during June, setting a new record among all months for any location in the state, according to the South Dakota State Climatologist.
  • Below-average June precipitation was observed in the Southwest, across parts of the coastal Southeast, and southern New England. Arizona tied its third driest June on record, with 0.01 inch of precipitation, 0.28 inch below the 20th century average; only June 1916 and 1951 were drier.
  • Alaska was much wetter than average during June with a statewide precipitation total 53 percent above the 1971-2000 average, the second wettest June for the state. The wettest June occurred in 1980 when the monthly precipitation was 74 percent above average. Juneau and Fairbanks each had their wettest June on record, while Anchorage had its second wettest.
  • According to the July 1 U.S. Drought Monitor report, 34.0 percent of the contiguous U.S. was in drought, down about 3.3 percent compared to the beginning of June.
    • Beneficial rain improved drought conditions by one to three categories across parts of the Midwest and the Central and Southern Plains. Nebraska, which had its fourth wettest June, saw dramatic drought improvement.
    • Warm and dry conditions in parts of the West led to scattered locations experiencing worsening drought conditions. In California, the percent area of the state experiencing exceptional drought, the worst category, expanded to 36.5 percent, up over 11 percent since early June. In the East, abnormally dry conditions expanded in the Tennessee River Valley and southern New England.
  • Based on NOAA's Residential Energy Demand Temperature Index (REDTI), the contiguous U.S. temperature-related energy demand during June was 33 percent above average and the 25th highest in the 1895-2014 period of record.
  • There were more record cool high temperature records (676) than record warm high temperature records (391), but warm nighttime temperatures dominated with more record warm low temperatures (1257) than record cold low temperatures (344). When aggregated together, there were more than one and a half times as many record warm daily highs and lows (1648) as record cold daily highs and lows (1020).



Monday, July 14, 2014

Lake Mead Drops to Record Low Elevation

Headline:  Persistent drought lowers Lake Mead to record low elevation.


Lake Mead at Hoover Dam, July 2014.
Photo © Ken Dewey, Applied Climate Science, SNR, UNL.
The red line labeled "A" shows the "bathtub ring", i.e., the height of the water when the Lake is at capacity. The red line with the label "B" shows the height of the water level on December 21, 2012. The red line with the label "C" shows the height of the water level on July 11, 2014 (1081.77 feet or 147.23 feet below capacity)..  
 
The white "bathtub ring" is the result of exposing rocks that were at one time under the water and collecting mineral deposits.  A clear glass, for example, dipped in water and then allowed to dry will have mineral deposit "spots" on the glass.

The Bureau of Reclamation noted that Lake Mead, the reservoir created by Hoover Dam, reached its lowest water level since the lake’s initial filling in the 1930s.

Lake Mead elevation as of July 11, 2014 was 1081.77 feet, which is 147.23 feet below capacity.
Lake Mead was dedicated in 1935 and began filling up that year. Note that the elevation in July 1935 and 1936 (see table: Table of historical Lake Mead Levels.) was only 928.40 feet and 1020.40 feet. Because Lake Mead was in the process of filling up in 1935-36, the actual record minimum elevation following the initial fill up of the Lake occurred on July 11, 2014. The level of the lake could continue to fall below the July 11, 2014 elevations.
 
It took 19 years after the 1964 low point for Lake Mead to fill up again.

For more information, check out our full report at:  Lake Mead 2014

Lake Mead at Hoover Dam, July 2014.
Photo © Ken Dewey, Applied Climate Science, SNR, UNL.



Monday, June 2, 2014

May 2014 Climate Summary, Lincoln, NE

Headline:  May 2014 was warmer than normal and wetter than normal for Lincoln, NE.

TEMPERATURES:
The highest temperature observed in Lincoln, NE in May 2014 was a record high of 98F on May 7.  This was also the earliest ever recorded temperature of 98F in the 128 year (1887-2014) data record for Lincoln.


Just nine days later, on May 16, the temperature fell to the coldest temperature of the month 30F, which was also a record low for the date.  This is also the latest in the Spring to have a temperature this cold with temperature data extending 128 years (1887-2014).

May 2014 averaged 65.2F or 2.9 degrees F ABOVE normal ended the 6 month string (October 2013-March 2014) of monthly temperatures averaging below normal.

PRECIPITATION:
The May 2014 precipitation total in Lincoln, NE was 5.26 inches, or 0.97 inches ABOVE normal.
 

The May 2014 precipitation of 5.26 inches was also more than the first four months combined (Jan. 0.24in + Feb 0.62in +Mar 0.13 in + Apr 3.50 in= 4.49 inches). 

The Year to date January 1 - May 31, 2014 precipitation total of 9.75 inches is 1.56 inches below the normal for this time period of 10.34 inches.


The cold season snowfall season officially ended in May with a 2013-14 seasonal snowfall total of only 18.2 inches which is well BELOW the normal of 25.9 inches.

OBSERVED COMPARED TO NORMAL TEMPERATURES GRAPH:
The following graph shows the Lincoln, NE, May 2014 daily high and low temperatures compared to normal daily highs and lows. The red line is the average high and the blue line is the average low.  The top of each vertical bar is the observed high temperature and the bottom of the vertical bar is the observed low temperature for each day.

  NOTE:  The May 2014statistics are located below the graph.




 
Here are the Lincoln, NE, summary statistics for May 2014.

TEMPERATURE:
May 2014 Temperature Statistics:
Average High Temperature 78.2 F (4.0 degrees
ABOVE Normal)
Average Low Temperature 52.2F (1.7 degrees
ABOVE Normal)
Mean Temperature 65.2 F (2.9 degrees
ABOVE  Normal)
Note: Mean temperature = the average of all the highs and lows
Number of days ABOVE Normal = 21
Number of Days BELOW Normal = 8
Number of Days exactly Normal = 2
Highest temperature 98 on May 7

Lowest temperature 30 F on may 16
Record low 30F on May 16
Record high 98F on May 7

PRECIPITATION:
May 2014 Precipitation Statistics:
Total precipitation 5.26 inches (0.97 inches
ABOVE Normal)
Heaviest precipitation 2.96 inches on May 11
Daily record precipitaion of 2.96 inches May 11, Old May 11 record was 1.33 inches


Normal January 1 - May 31 precipitation =  10.34 inches
Observed Total precipitation January 1 - May 31, 2014 = 9.75 inches
January 1 - April 30, 2014 precipitation deficit =  0.59 inches 

Thursday, May 8, 2014

Record Summer Heat in early May

Headline:  May 7, 2014 Was  Record Breaker in Lincoln, NE

The high temperature in Lincoln of 98F on May 7, 2014 was a record high for the date.
The old record was 96F set in 1934.
There are 128 years of data in the data archive.
The 98F was also the hottest for so early in the season.

The following map shows the observed high temperatures on May 7, 2014.
Note that southeastern Nebraska was hotter than the desert southwest cities of Phoenix and Tucson.

More text and analysis are located below the temperature map >>>>>>>>>>>>



The state highest temperature on May 7, 2014 was 99F set in  Tekama, Nebraska (southeastern Nebraska).
Omaha's high temperature of 96F was also a record for the date.  Their old record was 95F set in 1966

This was the first observed temperature of 90F or higher for the year in Lincoln Nebraska and it was 10 days earlier than the average..

Climatology of first 90F or higher for Lincoln, NE
Earliest: March 22
Latest:  June 29
Average:  May 17

The following graph shows the day of the year of the occurrence of the first 90F or higher temperature in Lincoln for the 128 year period 1887-2014



The following graph shows the day of the year of the occurrence of the first 90F or higher temperature in Lincoln for the 128 year period 1887-2014 AND it has a trend line (in red) for the last 40 years.
(1974-2014).  Although there is year to year variability there is a downward trend (earlier in the year) in the date of first 90F or higher for Lincoln.  The trend line shows a trend of 40 days earlier for the first 90F or higher (Day 153 to Day 113) in Lincoln, NE




Related Links:

Lincoln Weather and Climate
Lincoln Weather Records
Lincoln First 90F or Higher Climatology





Thursday, May 1, 2014

April 2014 Lincoln, NE, Climate Summary

Headline:  April 2014 was warmer than normal and wetter than normal for Lincoln, NE.

The highest temperature observed in Lincoln, NE in April 2014 was a near record high of 85F on April 12 (the record for that day is 86F).  Just three days later, on April 15, the temperature fell to the coldest temperature of the month 19F which was also a record low for the date.  This is also the latest in the Spring to have a temperature this cold with temperature data extending from 1887-2014, 128 years.


April 2014 averaged 1.1 degrees F ABOVE normal ended the 6 month string (October 2013-March 2014) of monthly temperatures averaging below normal.

The April 2014 precipitation total in Lincoln, NE was 3.50 inches, or 0.79 inches ABOVE normal.

The April 2014 precipitation of 3.50 inches was also more than the first three months combined (Jan. 0.24in + Feb 0.62in +Mar 0.13 in = 0.99 inches).  

The Year to date January 1 - April 30, 2014 precipitation total of 4.49 inches is 1.56 inches below the normal for this time period of 6.05 inches.

Lincoln saw one minor snowfall of 0.5 inches on April 13, 2014.  How unusual was this?  During the past 115 years, there has been measurable snowfall during April in Lincoln 54 times and no measurable snowfall 61 times.  So although perhaps unwelcome, the April 15 snowfall wasn't all that unusual.  The seasonal snowfall total as of the end of April is only 18.2 inches which is well BELOW the normal of 25.9 inches.
The following graph shows the Lincoln, NE, April 2014 daily high and low temperatures compared to normal daily highs and lows. The red line is the average high and the blue line is the average low.  The top of each vertical bar is the observed high temperature and the bottom of the vertical bar is the observed low temperature for each day.

  NOTE:  The April 2014statistics are located below the graph.


 
Here are the Lincoln, NE, summary statistics for April 2014.
TEMPERATURE:
April 2014 Temperature Statistics:
Average High Temperature 66.2 F (1.9 degrees
ABOVE Normal)
Average Low Temperature 39.3F (0.5 degrees
ABOVE Normal)
Mean Temperature 52.7 F (1.1 degrees
ABOVE  Normal)
Note: Mean temperature = the average of all the highs and lows
Number of Days ABOVE Normal = 16
Number of Days BELOW Normal = 12
Number  of Days exactly Normal = 2
Highest temperature 85F on April 12

Lowest temperature 19 F on April 15
Record cold daytime 19F on April 15
PRECIPITATION:
April 2014 Precipitation Statistics:
Total precipitation 3.50 inches (0.79 inches
ABOVE Normal)
Heaviest precipitation 1.14 inches on April 13

Snowfall total 0.5 inches (0.9 inches  BELOW  Normal)

Normal January 1 - April 30 precipitation =  6.05 inches
Total precipitation January 1 - April 30, 2014 = 4.49 inches
January 1 - April 30, 2014 precipitation deficit =  1.56 inches 


The following photo is a Lincoln, NE, garden Center the morning of April 14.
A Lincoln garden center with tender plants exposed to the snow and subfreezing temperatures.    





Thursday, April 17, 2014

January1-March 31, 2014 Statewide Temperature, Precipitation Rankings

Headline:  January 1-March 31, 2014:  Has it been one of the coldest and wettest starts to a year?


The perception by many people is that this year to date is one of the coldest on record. 

And, with the numerous snowfalls to our east during this time period, many also assume that this must be one of our wettest starts for a year in the 120 year (1895-2014) U.S. data archives.

The following two maps
January 1-March 31, 2014 Statewide Temperature Rankings
January 1-March 31, 2014 Statewide Precipitation Rankings

illustrate that facts can be quite differenct from perceived reality. 

Text continues below the two maps.


While the Midwest, Great Lakes states down to the gulf and over across the Ohio River valley suffered through an unusually cold winter much of the western U.S. was warmer than normal.  In fact, California and Arizona had their warmest January 1-March 31 on record.

It is fascinating to look back over the first three months and to see how many snowstorms were featured on the national news reports yet the country as a whole averaged below normal precipitation. Note that none of the Great Lakes states had a wetter thna normal January 1-March 31 time period. The area of greatest concern right now is the region of the Plains and southwest that are top ten driest starts to the year.

The NOAA/NCDC highlights are listed below>>>>>>>>>>

  • For the first three months of 2014, below-average temperatures were widespread in the eastern U.S. Twelve states, from the Upper Midwest to the Southeast, had three-month temperatures that ranked among the 10 coldest on record. The largest cold departures from average occurred across the Great Lakes region due to persistently below-average daily temperatures. No state had its coldest January-March on record.
  • The West was warmer than average during January-March. Nevada, Oregon, and Utah each had one of their 10 warmest on record. Arizona and California were record warm for the period, with temperatures 5.2°F and 5.6°F above average, respectively.
  • Collectively during the year-to-date period, the average contiguous U.S. temperature was 34.4°F, 0.8°F below the 20th century average. This marked the 41st coldest January-March on record and the coldest since 1985.
  •  Alaska had its third warmest January-March on record, behind only those of 1981 and 2001, with an average temperature 6.3°F above the 1971-2000 average. 
  • January-March precipitation averaged across the contiguous U.S. was 5.90 inches, 1.06 inches below average, marking the 14th driest such period on record and driest since 2009.
  • The Central and Southern Plains and Southwest were much drier than average during the first quarter. Seven states, from Arizona to Missouri, had three-month precipitation totals ranking among the 10 driest on record. The northern Rockies and Northwest were wetter than average, where Montana had its eighth wettest January-March.
  • Beneficial rains reduced drought coverage across Hawaii during the first quarter, with 14.4 percent of the islands in moderate to extreme drought at the end of March compared to 49.5 percent of the state at the beginning of the year. Extreme drought (D3) persisted through March on central Molokai, where low water levels in the Kualapuu Reservoir have forced mandatory irrigation restrictions.




Tuesday, April 15, 2014

March 2014 Statewide Temperature & Precipitation Rankings

March 2014 U.S. Climate Summary

March 2014 temperatures for Nebraska averaged near normal with much be,low normal temperatures to our northeast and much above normal temperatures to our southwest. The March 2014 precipitation in Nebraska was well below normal (ranked 11th driest on record out of 120 years of data, 1895-2014).

The U.S. Climate Highlights are below the two maps.







Climate Highlights — March 2014 From NOAA/NCDC

Below-average temperatures dominated the eastern half of the contiguous U.S. during March. The largest departures from average occurred across the Great Lakes and Northeast, where nine states had temperatures that ranked among their 10 coldest on record. The persistent cold resulted in nearly two-thirds of the Great Lakes remaining frozen into early April.

Vermont had its coldest March on record, with a statewide temperature of 18.3°F, 8.9°F below average. The previous coldest March in Vermont occurred in 1916 when the monthly average temperature was 18.6°F.

Maine and New Hampshire each had their second coldest March on record, while Michigan and New York had their fifth coldest. Massachusetts and Wisconsin had their eighth coldest March, Connecticut its ninth coldest, and Pennsylvania its 10th coldest.

Most locations from the Rockies westward had above-average March temperatures. California had its ninth warmest March, with a statewide temperature 4.7°F above average. No state was record warm for March.

The Northern Rockies and Pacific Northwest were much wetter than average during March, with Montana and Washington having their third wettest and sixth wettest March on record, respectively. Conversely, much of the central U.S. and Midwest was drier than average. Kansas, Iowa, and Illinois each had a top 10 dry March.

On March 22nd, a large landslide impacted the Stillaguamish Valley near the town of Oso, Wash., causing at least 30 fatalities. Washington's Climate Division 3, in which the landslide occurred, observed its wettest March on record. Its 8.67 inches of precipitation during March was more than twice the monthly average.

According to the April 1 U.S. Drought Monitor report, 38.4 percent of the contiguous U.S. was in drought, up from 35.9 percent at the beginning of March. Beneficial precipitation fell in California during March, but did little to improve drought conditions — 23.5 percent of the state remained in the worst classification of drought ("exceptional"). Drought conditions intensified across parts of the Central and Southern Plains and expanded into parts of the Southeast.

According to NOAA data analyzed by the Rutgers Global Snow Lab, March snow cover extent across the contiguous U.S. was the 22nd largest in the 48-year period of record at 845,000 square miles, about 104,000 square miles above the 1981-2010 average. Above-average snow cover was observed across the Northern Plains and Rockies, Midwest and Northeast where numerous storms brought heavy snowfall during the month. Below-average snow cover was observed for most of the West and southern Rockies due to season-long snow deficits.



Monday, April 14, 2014

Spring: the battle between winter and summer in Nebraska

I have been asked by several news sources today "how can it be so warm (85F) in Lincoln on Saturday April 12 yet the next evening Sunday April 13 it is snowing and temperatures are near freezing"? I was also asked several times today "isn't an April snowfall in Lincoln extremely rare"? And I have also been asked today "why is this April so very cold across the U.S.?



April Snowfalls not all that uncommon:
First of all here are some interesting April snowfall facts for Lincoln.

Lincoln April snowfalls: 115 years of data
54 Aprils had measurable snowfall (47% of the years) and
61 Aprils had no measurable snowfall (53% of the years)
So, an April snowfall is NOT all that unusual. 
The odds of an April snowfall increase as you go west in Nebraska with an almost 60% climatological chance of measurable snow in April in western Nebraska.

The 2013-14 Lincoln Snowfall is well below normal:
Seasonal 2013-14 snowfall total for Lincoln so far  is 18.2 inches and the normal is 27.5 inches.  So this winter has actually been 9.3 inches BELOW normal.

So far this month, most of the US is warmer than normal. 
The April 1-13 map (below) shows that much of the U.S. (48 states) is (yellow to orange) warmer than normal for the month. The concept here is what we may be experiencing locally is not necessarily indicative of the rest of the U.S.







Why do we experience these large temperature contrasts in Winter and Spring?
It was 85F on Saturday in Lincoln, one degree below a record high.  We are on the 50-yard line of the football field of weather and there is always going to be a contrast here with cold air to our north and warm air to our south battling it out for supremacy. If you lived in Florida it will always be warm.  If you live up in Canada it will always be cold.  We are in the middle.

Check this out: Lincoln Temperature extremes the last few months
Dec. 2013 highest and lowest temperatures   65F and -10F
Jan. 2014 highest and lowest temperatures    66F and -11F
Feb. 2014 highest and lowest temperatures   69F and -13F
Mar. 2014 highest and lowest temperatures   78 F and -7F
Apr. 2014 highest and lowest temperatures    85F and 25F

Yes it will get cold again later this week since winter is not dead yet.  Cold air will return on Thursday and then summer will push north again warming us for the weekend,.  Eventually, soon, summer will be strong enough to hold back winter weather until next fall when they battle it out again.

Do you remember last May 2013?  

On May 1-2, 2013 it snowed in Lincoln and the temperature fell to 31F then it rapidly warmed to 73F. 
May 1-2, 2013 2.7 inches of snow
May7, 2013, 73F

But even more dramatic was the record low of 31F on May 12 and two days later it was a record warm day of 100F.

May 2013:
May 12, 2013 Record Low 31F
May 14, 2013 Record High of 100F

..

Wednesday, April 2, 2014

March 2014 Lincoln Climate Summary


Headline:  March 2014 was cooler than normal and much drier than normal for Lincoln, NE.

The highest temperature observed in Lincoln, NE in March 2014 was 78 F on March 10, 2014.   The lowest temperature observed in Lincoln, NE in March 2014 was -7F on March 3, 2014.

The high temperature on March 2 was only 5F which is the coldest high temperature observed for that date as well as the coldest observed daytime high for any day in March (1887-2014).  The high of 5F on March 2 was 41 degrees BELOW the normal for the date of 46F.  A record high of 78F was set a few days later on March 10. March 2014 was the 6th month in a row of below normal temperatures for Lincoln.  This is the longest stretch of monthly temperatures below normal since November 1992 through November 1993 with 13 months in a row averaging below normal.
 
The March 2014 precipitation total in Lincoln, NE was 0.13 inches, or 1.80 inches below normal.   This was ranked the 5th lowest March precipitation on record out of 128 years of data (1887-2014).  Year to date January 1 -March 31 precipitation normal is 3.34 inches, observed January 1-March 31, 2014 is only 0.99 inches or 2.35 inches below normal.

Top Ten Driest Months of March (1887-2014)

Driest
Year
Amount
in Inches
Rank
1994
0.06
1
1929
0.08
2
1910
0.10
3
1968
0.11
4
2014
0.13
5
1988
0.13
5
1918
0.14
7
1936
0.18
8
2009
0.18
8
1989
0.24
10



Lincoln saw two minor snowfalls during the March 2014, March 1 with 0.6 inches and March 18 with 0.1 inches.  This 0.7 inches is 4.1 inches below the normal March total of 4.8 inches.  The Winter 2013-14 snowfall total as of the end of March 2014 is only 17.7 inches
 
The following graph shows the Lincoln, NE, March 2014 daily high and low temperatures compared to normal daily highs and lows.  NOTE:  The March 2014statistics are located below the graph.

Here are the Lincoln, NE, summary statistics for March 2014.

TEMPERATURE:
March 2014 Temperature Statistics:
Average High Temperature 52.1 F (0.2 degrees BELOW Normal)
Average Low Temperature 22.2F (5.7 degrees BELOW Normal)
Mean Temperature 37.1 F (3.0 degrees
BELOW  Normal)
Note: Mean temperature = the average of all the highs and lows
Number of days ABOVE Normal = 15
Number of Days BELOW Normal = 15
Number of Days exactly Normal = 1
Highest temperature 78F on March 10

Lowest temperature -7 F on March 3
Record cold daytime high, 5F on March 2
Record high temperature of 78F on March 10


PRECIPITATION:
March 2014 Precipitation Statistics:
Total precipitation 0.13 inches (1.80 inches
BELOW Normal)
Heaviest precipitation 0.07 inches on March 27

Snowfall total 0.7 inches (4.8 inches  BELOW  Normal)

Normal January 1 - March 31 precipitation =  3.34 inches
Total precipitation January 1 - March 31 2014 = 0.99 inches
January 1 - March 31, 2014 precipitation deficit =  2.35 inches 

Thursday, March 20, 2014

February 2014 Global Avg. Temperature Above Normal


Did February 2014 seem much colder than normal to you?  

It sure did if you lived in the Midwest out into the Great Plains of Canada and the U.S.  At least we weren't alone, check out the "big blue blob" over central Asia!

Overall the Global average land and water temperature for February 2014 was warmer than normal (ranked 21st warmest out of 135 years of data (1880-2014) despite the much colder than normal conditions in parts of North America and Central Asia.

The February 2014 Global Highlights from NCDC are listed below the map.









Global temperature highlights: February
  • The combined average temperature over global land and ocean surfaces for February 2014 tied with 2001 as the 21st highest for February at 54.64°F (12.51°C), or 0.74°F (0.41°C), above the 20th century average of 53.9°F (12.1°C). The margin of error associated with this temperature is +/- 0.22°F (0.12°C).
  • The February global land temperature tied with 1943 as the 44th highest for February on record and the coolest since February 1994, at 0.56°F (0.31°C) above the 20th century average of 37.8°F (3.2°C). The margin of error is +/- 0.58°F (0.32°C).
  • The Northern Hemisphere land areas between 30°N and 60°N were 0.52°F (0.29°C) below average, tying with 1957 as the 60th coolest (76th warmest) for February on record and the coolest departures from average for land regions in the world during the month. The last February that was colder in this region occurred just two years ago in 2012. That month was 0.74°F (0.41°C) below average, ranking as 50th coolest (86th warmest) for February and was primarily due to cooler-than-average temperatures over most of Eurasia and northern Africa.
  • Some national temperature highlights include:
    • In Scandinavia, many areas of Finland observed February temperatures 11°-14° F (6°-8°C) above average, with some regions in the north more than 16°F (9°C) above average. For central and northern Finland, it was the second warmest February in the 115-year period of record, behind only 1990. The February temperature for Norway was 11.0°F (6.0°C) higher than the 1981-2010 average, the second warmest February on record, also behind 1990.
    • The nationally-averaged temperature for Germany was 6.1°F (3.4°C) above the 1981-2010 average, marking the sixth warmest February since records began in 1881.
    • In Canada, many regions in Ontario observed February temperatures among their 10 coldest on record and coldest in more than 30 years, with departures more than -9°F (-5°C) at some few stations.
  • For the ocean, the February global sea surface temperature was 0.81°F (0.45°C) above the 20th century average of 60.6°F (15.9°C), the seventh highest for February on record and warmest February since 2010, when El Niño conditions were present. The margin of error is +/- 0.07°F (0.04°C). The Northern Hemisphere oceans outside the tropics (20°N-90°N) were record warm on average for February.
  • Neither El Niño nor La Niña conditions were present across the central and eastern equatorial Pacific Ocean during February 2014. According to NOAA's Climate Prediction Center, there is about a 50 percent chance that El Niño conditions will develop during Northern Hemisphere summer or fall 2014.