Friday, December 27, 2013

Importance of Snow Cover and Daytime Temperatures

Winter daytime temperatures and snow cover in the  middle latitudes.

Snow cover during the Winter has a dramatic impact on observed daytime temperatures. Although the intensity of solar radiation on sunny winter days is much smaller than during the Summer, it can still warm the surface of the earth during the day.  

The following satellite image shows a swath of snow cover extending from south central Kansas up to northeast Kansas, the far southeast corner of Nebraska and on into central Iowa.


The reflection of sunlight from a surface is termed the "albedo".
File:Albedo-e hg.svg
Notice from the above diagram that from 40-85% of the incoming solar radiation is reflected away from a snow covered surface and is unavailable for surface heating.  In contrast only 25 to 35% of the solar radiation is reflected back to space from the bare soil.

December 26, 2013 was basically cloud free across the Plains from Nebraska to Oklahoma allowing solar energy to strike the earth's surface throughout the day.  The following maps show the highest temperatures observed during the day.  It is very evident that the high temperatures were suppressed in the snow covered region extending from Kansas up into Iowa.

Notice (on the Weather Channel map of December 26, 2013 high temperatures) the blue color corresponding to the snow covered area in Kansas showing suppressed daytime highs. Temperatures were warmer to the west and the east of this snow covered region in Kansas.

The second map is a close up view of the observed NWS high temperatures for December 26, 2013.  Notice the highs in the 50's to the west and east of the snow covered area.  Snow covered Salina, KS, (KSLN) had a high temperature of only 40F and snow covered Manhattan, KS (KMHK) only had a high temperature of 44F.

The presence of a snow cover appears to have kept the daytime high temperatures from 10 to 15 degrees F cooler than the non snow covered area to the west and east of this location.




December 26, 2013 finds Lincoln, NE and Omaha, NE snow free

Thursday, December 26, 2013

Lincoln, NE, White Christmas Climatology

Christmas 2013 was a "Brown Christmas" with no snow on the ground in Lincoln, NE.  The photo below was taken on December 25, 2013 mid afternoon just east of Lincoln, NE.

How rare is it to have a "White Christmas" in Lincoln? 
The standard climatological definition of a "White Christmas" is "one or more inches of snow on the ground on Christmas morning".

Temperatures were also very mild on December 25, 2013 as noted in the following photograph taken in Lincoln early afternoon before the official high of 45F for the day.


Although monthly snowfall data for Lincoln extend back to January 1900, daily snowfall and snow cover data only exist back to January 1948.

White Christmases in Lincoln with snow depth and year of occurrence.

14 inches, 1983
11 inches, 2000
10 inches, 2009
 8 inches, 1973, 1952, 1948
 7 inches, 1968
 5 inches, 1961, 1951
 3 inches, 2008
 2 inches, 2012, 1997, 1981, 1980, 1969, 1962
 1 inch,   2007, 2001, 1974, 1957, 1949


This is a total of 21 years out of 66 years (1948-2013) or only 32 % of the past 66 years had a "White Christmas" in Lincoln, NE.  The following is a graph showing the snow depth on the ground in Lincoln, NE, on December 25 for 1948 through 2013.




Christmas Day December 2009 near Lincoln, NE, after a snowstorm struck eastern Nebraska

Thursday, December 19, 2013

Wintry Weather Forecast for December 19-26, 2013


Update on the wintry weather outlook for December 19-26, 2013

The upcoming weekend of December 20-22, 2013 will be one of the busiest travel weekends of the year.
Two separate winter storms will develop and move across portions of the lower 48 states.

Forecast Precipitation Type:  December 19-26, 2013.
The third line in the map title shows the date of each animated map.
Colors:  Blue = snow; green = rain; red =  ice pellets; tan = freezing rain

Storm #1: Thursday afternoon, December 19:  LIGHT Freezing drizzle possible across southeast Nebraska. Snowfall across the Great Lakes region.

Storm #2:  Saturday-Sunday, December 21-22: Heavy snow from Kansas to southeastern Wisconsin; light snow possible in the Lincoln-Omaha area.  Since southeast Nebraska will be on the northern edge of this storm system, forecasting amounts will be a challenge.  A shift in the storm track by just a few miles will mean the difference between a dusting of snow and a plowable snow. 



Snowfall total Storm #1 + Storm #2: December 19-26, 2013.


Note how close Lancaster County, in Southeast Nebraska, is to the area of heavy snow. The computer forecast models have moved the path of the Plains snowstorm a little bit further north with each model run over the past 3 days.  The forecast path was originally central Oklahoma to Chicago.  When this storm starts moving out of the southwestern U.S. on Saturday any slight deviation in its path will have a significant impact on where the band of heavy snow falls relative to southeast Nebraska.

Snowfall totals, Model Uncertainties Southeast Nebraska.

The following graph for Omaha and for December 19-23, 2013 shows the forecast snowfall accumulation for 23 different forecast models.  Many of the models show NO SNOWFALL during the time period.  One of the forecast models indicates a snowfall total of  SEVEN INCHES.  The black line is the median of the snowfall forecasts and indicates a snowfall total of around ONE INCH


SEVERE WEATHER?
Spring like severe weather is also possible with the 2nd storm system.  Severe thunderstorms and tornadoes are possible any time of the year, not just spring and summer (especially across the deep south and the gulf states). The Storm Prediction Center forecast map for Saturday December 21, 2013 shows an area from eastern Texas to the Ohio River Valley that has the potential for severe thunderstorms.




NWS LINCOLN FORECAST December 19-26:  Cloudy and cold through Saturday with a 20% chance of snow Saturday afternoon overnight into Sunday morning.  Clear and cold on Monday with a rapid warm up to near normal by Christmas day.

Update on the wintry weather outlook for December 19-26, 2013

The upcoming weekend of December 20-22, 2013 will be one of the busiest travel weekends of the year.
Two separate winter storms will develop and move across portions of the lower 48 states.

Forecast Precipitation Type:  December 19-26, 2013.
The third line in the map title shows the date of each animated map.
Colors:  Blue = snow; green = rain; red =  ice pellets; tan = freezing rain

Storm #1: Thursday afternoon, December 19:  LIGHT Freezing drizzle possible across southeast Nebraska. Snowfall across the Great Lakes region.

Storm #2:  Saturday-Sunday, December 21-22: Heavy snow from Kansas to southeastern Wisconsin; light snow possible in the Lincoln-Omaha area.  Since southeast Nebraska will be on the northern edge of this storm system, forecasting amounts will be a challenge.  A shift in the storm track by just a few miles will mean the difference between a dusting of snow and a plowable snow.



Snowfall total Storm #1 + Storm #2: December 19-24, 2013.


Note how close Lancaster County, in Southeast Nebraska, is to the area of heavy snow. The computer forecast models have moved the path of the Plains snowstorm a little bit further north with each model run over the past 3 days.  The forecast path was originally central Oklahoma to Chicago.  When this storm starts moving out of the southwestern U.S. on Saturday any slight deviation in its path will have a significant impact on where the band of heavy snow falls relative to southeast Nebraska.

Snowfall totals, Model Uncertainties Southeast Nebraska.

The following graph for Omaha and for December 19-23, 2013 shows the forecast snowfall accumulation for 23 different forecast models.  Many of the models show NO SNOWFALL during the time period.  One of the forecast models indicates a snowfall total of  SEVEN INCHES.  The black line is the median of the snowfall forecasts and indicates a snowfall total of around ONE INCH



Snowfall total Storm #1 + Storm #2: December 19-23, 2013.



SEVERE WEATHER?
Spring like severe weather is also possible with the 2nd storm system.  Severe thunderstorms and tornadoes are possible any time of the year, not just spring and summer (especially across the deep south and the gulf states). The Storm Prediction Center forecast map for Saturday December 21, 2013 shows an area from eastern Texas to the Ohio River Valley that has the potential for severe thunderstorms.



NWS LINCOLN FORECAST December 19-26:  Cloudy and cold through Saturday with a 20% chance of snow Saturday afternoon overnight into Sunday morning.  Clear and cold on Monday with a rapid warm up to near normal by Christmas day.



Related Links:

Lincoln, NE Weather and Climate
Forecast maps including snowfall forecasts
Lincoln, NE Snowfall Climatology
Nebraska Weather Photos

Wednesday, December 18, 2013

November 2013 Global Temperatures Highest on Record


NOAA: November global temperature highest on record



According to NOAA scientists, the globally-averaged temperature over land and ocean surfaces for November 2013 was the highest for November since record keeping began in 1880. It also marked the 37th consecutive November and 345th consecutive month (more than 28 years) with a global temperature above the 20th century average. The last below-average November global temperature was November 1976 and the last below-average global temperature for any month was February 1985.

Most areas of the world experienced warmer-than-average monthly temperatures, including: much of Eurasia, coastal Africa, Central America, central South America, parts of the North Atlantic Ocean, the south west Pacific Ocean, and the Indian Ocean. Much of southern Russia, northwest Kazakhstan, south India, southern Madagascar, parts of the central and south Indian Ocean, and sections of the Pacific Ocean were record warm. Meanwhile, northern Australia, parts of North America, south west Greenland, and parts of the Southern Ocean near South America were cooler than average. No regions of the globe were record cold.     

 

Global Highlights

  • The combined average temperature over global land and ocean surfaces for November 2013 was record highest for the 134-year period of record, at 0.78°C (1.40°F) above the 20th century average of 12.9°C (55.2°F).
  • The global land surface temperature was 1.43°C (2.57°F) above the 20th century average of 5.9°C (42.6°F), the second highest for November on record, behind 2010. For the global oceans, the November average sea surface temperature was 0.54°C (0.97°F) above the 20th century average of 15.8°C (60.4°F), tying with 2009 as the third highest for November.
  • The combined global land and ocean average surface temperature for the September–November period was 0.68°C (1.22°F) above the 20th century average of 14.0°C (57.1°F), the second warmest such period on record, behind only 2005.
  • The September–November worldwide land surface temperature was 1.08°C (1.94°F) above the 20th century average, the third warmest such period on record. The global ocean surface temperature for the same period was 0.52°C (0.94°F) above the 20th century average, tying with 2009 and 2012 as the fourth warmest September–November on record.
  • The combined global land and ocean average surface temperature for the year-to-date (January–November) was 0.62°C (1.12°F) above the 20th century average of 14.0°C (57.2°F), tying with 2002 as the fourth warmest such period on record.

Weather Outlook for December 18 - 25, 2013

Update on the wintry weather outlook for December 18-25, 2013

The upcoming weekend of December 20-22, 2013 will be one of the busiest travel weekends of the year.

Two separate winter storms will develop and move across portions of the lower 48 states.

This posting will outline the weather forecast for our area through Christmas and then the outlook for the lower 48 states for the same time period

NWS FORECAST December 18-22:  Mild today, December 18; Thursday much colder with a chance of freezing drizzle in the afternoon and evening.  Slight chance of snow on Saturday


WEATHER CHANNEL FORECAST December 18-27: Similar to the NWS with an extended outlook into next week, mainly dry with near normal temperatures.


SNOWFALL FORECASTS:
The following animated map shows the precipitation type for the period December 18-25.  The 3rd line shows the date of each of the maps.  
Blue is snowfall; red is ice pellets; tan is freezing rain and green is rain.  

At the current time (December 18) it appears that southeast Nebraska will be only slightly impacted by these two winter storm between now and Christmas Day.  

STORM #1:
Southeast Nebraska (Lincoln-Omaha) has the potential for some icy precipitation on Thursday December 19 while the main snow area moves over the Great Lakes region.  

STORM #2:
A major snow storm develops in the southern Plains and moves northeastward up toward Chicago and the Great Lakes on December 21-22.  Travel should be significantly impacted over the weekend, especially Sunday, for Chicago's O'Hare airport.

Christmas Eve and Christmas Day look relatively quiet across the region with (note the last two maps in the animation) a potential snowfall moving into most of Nebraska from the northwest on December 25.

A map showing the forecast total snowfall for the area from the Rocky Mountains to the East Coast is located below the animated map.


TOTAL SNOWFALL DECEMBER 18-23 (Two forecast maps):  Important point to remember, these are forecasts and only a slight change in the path of either storm could shift the anticipated paths of these two storms, so keep checking your local forecast before heading out on any long distance trips.  It is also important to note that there will be slight differences between various forecast models making it difficult to have 100% accuracy in a forecast when there is a divergence of "opinion" in these models.


The following map (December 18-23, 2013) shows another computer model solution for the total snowfall and in this model the area of snowfall accumulation is further north and covers southeast Nebraska (Lincoln-Omaha).









Monday, December 16, 2013

Winter Weather Outlook, December 16-25, 2013

As we approach one of the busiest holiday travel periods of the year, what is the outlook for the winter weather leading up to Christmas Day, December 25, 2013?

A week ago, computer forecast models were suggesting that a massive cold wave and significant snowfall might hit eastern Nebraska over the weekend of December 20-22.  This was of particular concern since this would be the peak travel time for many people heading out of town for Christmas week.

The following is an outlook for BOTH temperature and snowfall for December 16-25, 2013

The good travel news is that the computer models have continued to trend toward a warmer and drier solution for this time period.  In the short run, Monday through Thursday should be relatively mild for eastern Nebraska with lots of sunshine. Both the Weather Channel and our local NWS office indicate that mild temperatures should last through Thursday this week with several days of 40's to near 50F.  The coldest temperatures during this time period will take place this coming Friday with highs only in the low 20's.  Temperatures should moderate again into next week right up to Christmas Day with normal to slightly above normal temperatures. 

TEMPERATURE OUTLOOK:



SNOWFALL OUTLOOK:

Snowfall in Lincoln and Omaha  is unlikely during this time period based upon current forecast models. Remember that conditions can rapidly change so check your local forecasts leading up to this coming weekend. The first map shows an animation of precipitation type (blue is snow, red is ice pellets, tan is freezing rain and green is rain) for the time period December 16-23, 2013.  Note how the snowfall misses us to the north and the rain misses us to the south leaving Nebraska dry.  The third line in the map title shows the date for each map as it goes through the animation.



The next map shows the forecast total snowfall accumulation from Monday December 16 to Saturday  December 21, 2013.



The following map shows the snow covered area of North America as of Sunday December 15, 2013.   If the above forecast remains unchanged, the thin snow cover in eastern Nebraska will melt away resulting in a "brown Christmas" for eastern Nebraska.


Related Links:

Lincoln, NE Weather and Climate
Forecast maps including snowfall forecasts
Lincoln, NE Snowfall Climatology
Nebraska Weather Photos

Monday, December 2, 2013

November 2013, Lincoln, NE, Climate Summary

Headline:  November 2013 was cooler than normal and drier than normal for Lincoln, NE.

The highest temperature observed in Lincoln, NE in November  2013 was 64 F on November 16, 2013.   The lowest temperature observed in Lincoln, NE in November 2013 was 6F on November 27, 2013.


The November 2013 precipitation total in Lincoln, NE was 1.22 inches or 0.21 inches below normal.  The total January 1 through November 30, 2013 precipitation in Lincoln was 26.49 inches or 1.49 inches below the normal of 27.98 inches. See the table below the graph for the Year 2013 precipitation totals.

Lincoln saw its first measurable snowfall (0.2 inches) of the season on November 21, 2013. This was close to the average median date for the first snowfall in the Autumn for Lincoln.

The following graph shows the Lincoln, NE, November 2013 daily high and low temperatures compared to normal daily highs and lows.  NOTE:  The November 2013 statistics are located below the graph.
 
 
Here are the Lincoln, NE, summary statistics for November 2013.

TEMPERATURE:
November 2013 Temperature Statistics:
Average High Temperature 50.0 F (0.3 degrees BELOW Normal)
Average Low Temperature 23.5F (4.1 degrees BELOW Normal)
Mean Temperature 36.7 F (2.1 degrees
BELOW  Normal)
Note: Mean temperature = the average of all the highs and lows
Number of days ABOVE Normal = 14
Number of Days BELOW Normal = 16
Number of Days exactly Normal = 0
Highest temperature 64F on November 16 

Lowest temperature 6 F on November 27

PRECIPITATION:
November 2013 Precipitation Statistics:
Total precipitation 1.22 inches (0.21 inches
BELOW Normal)
Heaviest precipitation 1.20 inches on November 5

November 5 precipitation total was a record precipitation for that day of the month
Snowfall total 0.2 inches (1.9 inches  BELOW  Normal)

Normal January 1 - November 30 precipitation =  27.98 inches
Total precipitation January 1 - November 30 = 26.49 inches
January 1 - November 30 precipitation deficit =  1.49 inches 


RELATED LINKS:
Lincoln Weather and Climate
Lincoln's Snowfall climatology
November 2013 Lincoln, NE, daily climate data
November 2013 Photo Gallery



Tuesday, November 26, 2013

Thanksgiving Week 2013 Weather Forecast

Headline: 
Dry and cold in the Heartland, Major storm along the East Coast to impact travel.


Lincoln:
Remaining dry through the end of the upcoming Thanksgiving weekend with a 0% chance of precipitation.  Temperatures colder than normal are expected, but warming to above normal by the weekend.  Normal highs/lows this time of year are low 40's and low 20's. 
    

East Coast Winter Storm:
A major winter storm is taking shape and will significantly impact travel from the southeastern U.S. up into New England.  Snowfall amounts could exceed 12 inches along the Appalachian mountains into Ontario and Quebec in Canada.  Fortunately, the temperatures will be too warm for snow to reach the coastal population corridor from Boston to New York City and Washington D.C.   Heavy rain, in excess of 2 to 3 inches, will impact the coastal region northeastward from Washington, D.C.  Note the forecast below for New York City showing that the storm will clear that region by Thanksgiving morning.






A look Ahead:
A major cold wave is likely toward the end of next week.  Precipitation is also likely when the cold Arctic air arrives so this is our potential first "plowable" snowfall.  It is still too early to estimate potential snowfall amounts for the area but there is high confidence that the weather pattern will bring us our first real winter weather by the end of next week.  Precipitation is more difficult to forecast ahead of time than temperature.  Airmasses control the temperatures and the airmass will cover the entire region.  However, the band of snowfall is limited in its size and controlled by the availability of moisture arriving int he region.  The exact location of the snowfall in Nebraska and the intensity of snowfall can't be accurately forecast this far ahead of time.  This extended outlook is provided as a "heads up" outlook for a potential snowfall in our area and does not have the confidence that we have in forecasting the onslaught of Arctic air at the end of next week






The following forecast map shows the weather for 06UTC December 7 (or midnight CST December 6).  The areas in green show where precipitation could be occurring.  The furthest south blue line is 0C (32F). The next blue line north is -10C (+14F). The air mass in southern Canada is colder than -30C (-22 F) and sliding southward into the Plains.

The following forecast map shows the weather for 06UTC December 10 (or midnight CST December 9).  The areas in green show where precipitation could be occurring.  The furthest south blue line is 0C (32F). The next blue line north is -10C (+14F). 

Related link:  Lincoln Weather and Climate


Wednesday, November 20, 2013

First Snowfall of the Season

November 20, 2013:  southeast Nebraska will expereince its first blast of winter weather Thursday into the weekend with arrtic air plunging out of Canada and our first snwofall fo the season.

As of 13:45 GMT (8:45 am CST) November 20, 2013 a large area of extremely cold air covers western Canada.  This mass of Arctic temperatures, more typical of January,  has started to move across the border into the northern Plains.  Note on the map that the temperatures in the southern Prairie Provinces of Canada are -20F to -30F.


The following map shows the forecast total snowfall accumulation.  This event will be moisture starved so snowfall amounts will be on the relatively light side.


The official forecast from the Omaha/Valley, NE, NWS office is:
  • Thursday Rain likely, mainly after noon. Cloudy, with a temperature rising to near 37 by noon, then falling to around 32 during the remainder of the day. Breezy, with a north wind 11 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
  • Thursday Night Snow. Low around 20. Blustery, with a north wind 16 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.



Looking out through November 25-29 shows a high probability of colder than normal temperatures in our area and much of the lower 48 states.


The 6-10 day outlook shows a higher chance of drier than normal than wetter than normal so it doesn't look like we will have much snowfall during this anticipated cold spell.





Related links:
 Lincoln's Snowfall Climate Data

Lincoln's November 2013 daily weather and climate data






Tuesday, November 12, 2013

October 2013 Statewide Temperature and Precipitation Rankings

October 2013 Statewide Temperature and Precipitation Rankings
 
 
Nebraska had its 24th coldest October on record (see the map below) out of 119 years of data.  Iowa to Colorado and up north into SD, ND, MT, ID and WA all had a "much warmer than Normal" September 2013.  From Oklahoma north to North Dakota and all the way west to the West Coast, temperatures averaged below normal in October 2013.The only states with above normal temperatures in October 2013 were from Virginia through New England and Florida.  The average temperature for the lower 48 states was the 37th coldest October on record.

In contrast, and not shown on the map, Alaska had it warmest October on record this year.

Nebraska experienced much above normal precipitation during September 2013.  It was Nebraska's 112th driest (or 8th wettest) October on record. The scale goes from driest to wettest so the 119th driest is in fact the 1st wettest, the 118th driest is in fact the 2nd wettest, etc.Wyoming had their 117th driest (or 3rd wettest) October on record. North Dakota and South Dakota were also much above normal for their average precipitation.  The ID, OR, WA, CA, AZ and NM had below normal to much below normal precipitation.  The southeastern U.S. and New England were also drier than normal in October 2013.


The U.S. Highlights from the National Climatic Data Center are located below the two maps.






Climate Highlights — October
  • The average temperature for the contiguous United States during October was 53.6°F, 0.6°F below the 20thcentury average, making it the 37th coolest October on record.
  • Below-average temperatures dominated west of the Mississippi River. Oregon had its 11th coolest October, with a monthly temperature of 46.3°F, 3.0°F below average. No state had October temperatures that ranked among the ten coolest.
  • Above-average temperatures were observed across the Mid-Atlantic and Northeast. Delaware tied its tenth warmest October with a monthly temperature 3.5°F above average. Near-average temperatures were reported across much of the Midwest and the Southeast.
  • The Alaska statewide average temperature during October was 8.8°F above the 1971-2000 average marking its warmest October on record in the 95-year period of record. The previous record warm October occurred in 1925, when the temperature was 7.7°F above average. Locally, the Fairbanks average October temperature of 36.1°F was 11.9°F above normal. In addition to the above-average temperatures, many low elevation locations received much-below-average snowfall.
  • The October national precipitation total was 2.23 inches, 0.12 inch above the 20th century average.
  • The near-average October precipitation total for the contiguous U.S. masked both wet and dry extremes. The East and West Coasts were drier than average during October. California and Oregon both had their 11th driest October. Rhode Island and Massachusetts had their fourth driest and ninth driest Octobers on record, respectively.
  • Much of the central U.S. was wetter than average, stretching from the Southern Plains, into the Northern Plains and Midwest. Nebraska, North Dakota, South Dakota, and Wyoming each had a top ten wet October.
  • The Alaska statewide average precipitation during October was 74.5 percent above the 1971-2000 average and marked the third wettest October in the 95-year period of record for the state. The weather pattern that brought the above-average temperatures to the state also brought an abundance of precipitation, mainly in the form of rain, causing minor flooding. Valdez received 17.83 inches of rain during October, 8.69 inches above average, and the wettest October on record for the location.
  • An early-season blizzard hit northeastern Wyoming and western South Dakota on October 3rd–5th, dropping up to three feet of snow with winds in excess of 70 mph. Rapid City, South Dakota received 23.1 inches of snow, breaking several October snowfall records for the city. An estimated 20,000 head of cattle died during the event in South Dakota, approximately 15 to 20 percent of the state's entire cattle population. The storm was rated a Category 3 (Major) on the Regional Snowfall Index.
  • According to analysis by the Rutgers Global Snow Lab, the October snow cover extent across the contiguous U.S. was the fifth largest in the 46-year period of record at 132,000 square miles, more than 60,000 square miles above average. Conversely, the Alaska snow cover extent was 53,000 square miles below average, and the ninth smallest October snow cover extent on record.
  • According to the October 29th U.S. Drought Monitor report, 34.7 percent of the contiguous U.S. was in drought, down 6.5 percent compared to the beginning of the month and down 26.4 percent since the beginning of the year. Drought improved for parts of the Central Rockies and Great Plains, while drought conditions developed across parts of the Northeast.
  • On a local basis during October, there were slightly more (1.2 times as many) record cold daily highs (698) and lows (407) as record warm daily highs (242) and lows (689).
  • Based on NOAA's Residential Energy Demand Temperature Index (REDTI) , the contiguous U.S. temperature-related energy demand during October was eight percent below average and the 58th lowest in the 1895-2013 period of record.

Wednesday, November 6, 2013

November 5, 2013 Winter Storm: heavy rain and snow in Nebraska

An early Winter Storm moved across the Heartland on Tuesday November 5, 2013 bringing heavy rain to eastern Nebraska and snow to central and northeastern Nebraska.

A record day in Lincoln and Omaha:  The November 5, 2013 rainfall in Lincoln, 1.20 inches broke the record for that day of the year, 0.70 inches, which was set in 1948. The Omaha rainfall total of 1.00 inches also broke their previous record of 0.99 inches also set in 1948.

The following map shows the radar estimated 24-hour precipitation total with a large area in southeast Nebraska with over 1 inch of rain.



The next map shows the actual measured precipitation amounts for the same 24-hour period and was produced by our local Omaha/Valley, NE, NWS office.


The following animated radar map shows the precipitation moving across our region on
November 5, 2013.  Note that the green is rain and the blue is snowfall.



The heavy rains in Lincoln were responsible for knocking many of the autumn leaves off the trees .  As the following photos from the afternoon of November 5, 2013 show, the ground was covered with many colorful leaves that were forced straight down and off the tree branches.







Finally, while southeastern Nebraska saw only rain, a swath of snowfall extended from SW Nebraska up through northeastern Nebraska and on up to Minnesota. Local snowfall amounts of 9+ inches were observed near Gordon, NE. The following satellite image clearly shows the swath of snow on the ground as of today, Wednesday, November 6, 2013 (note the blue lines that were added to show the snow on the ground.  Clouds cover SE Nebraska. Thank You  NWS Sioux falls for posting this image.