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Union County, IA Weather and Climate Synopsis

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A joint service of the UK Ag Weather Center and the National Weather Service.

Weather Summary for Iowa
National Weather Service Des Moines IA
542 PM CDT Tue Mar 20 2018

Conditions across Iowa this afternoon were cloudy. After the light
snow showers rolled through the northwestern portion of the state, a
few flurries and a few light scattered sprinkles were reported at
scattered locations. Temperatures this afternoon only reached the mid
30s, with light northerly winds of 5 to 10 miles per hour. As of the
early evening hours, visible satellite showed all of Iowa under thick
cloud cover. A few stations across the state were reporting light 
rain showers under the cloud cover. 

Across the rest of the Midwest, conditions today have been cloudy. 
Clear skies are way out west over the High Plains. Temperatures have 
mainly been in the mid 30s, with generally northerly flow. There have 
been scattered light rain showers and snow flurries across the region.

For this evening, the cloud cover will prevent temperatures from
dropping. Overnight lows will be in the upper 20s to lower 30s. Winds
will be calm. Mist and localized fog can be expected across Iowa this
evening and into the morning hours which will reduce visibility. For
tomorrow, temperatures will be in the mid 40s for most of the state,
with a few locations near the Missouri border reaching the lower 50s.
Overall, conditions should be dry in terms of precipitation. Activity
will pick up toward the end of this week, with a few scattered rain
showers on Thursday, and more widespread precipitation on Friday
across Iowa. 

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

Precision Agriculture Weather Forecast For UNION County

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Regional Hourly Observations For UNION County
Issued at 300 AM CDT WED MAR 21 2018

ATLANTIC *     LGT SNOW  34  34 100 NE5       30.06S WCI  30          
AUDUBON *      CLOUDY    32  30  93 CALM      30.07R                  
CLARINDA *     CLOUDY    36  34  93 NW9       30.09S WCI  29          
COUNCIL BLFS * CLOUDY    34  34 100 NW7       30.08R WCI  28          
CRESTON *      CLOUDY    34  32  93 N7        30.06R WCI  28          
HARLAN  *      LGT RAIN  34  34 100 NW8       30.10R WCI  27          
LAMONI         CLOUDY    33  31  92 N5        30.04R WCI  29          
RED OAK *      CLOUDY    36  32  87 NW9       30.07S WCI  29          
SHENANDOAH *   CLOUDY    34  30  86 NW6       30.09S WCI  29          

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel

Current Agricultural Weather Conditions in Iowa
Based on observations at 300am CDT, Wednesday March 21, 2018

Across Iowa...temperatures are near 32 degrees west, near 32 degrees central, and near 28 degrees east. Current sky conditions are partly cloudy west, cloudy central, and fair east. In the west, relative humidity is near 96%, and the dew point is near 31 degrees. In the central part of the state, relative humidity is near 85%, and the dew point is near 28 degrees. In the east, relative humidity is near 66%, and the dew point is near 18 degrees. Winds are from the northwest at 7 mph west, where conditions are favorable for spraying. The wind chill is near 26 degrees west. Winds are from the north at 6 mph central, where conditions are favorable for spraying. The wind chill is near 26 degrees central. Winds are from the north at 10 mph east, where conditions are favorable for spraying. The wind chill is near 19 degrees east. Based on current available observations, the highest temperature is 36 degrees at Clarinda. The lowest temperature is 23 degrees at Waterloo and Mason City.

Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

US Radar, All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For UNION County,IA

353 PM CDT Tue Mar 20 2018

 DAY ONE  This afternoon and tonight

Precipitation will end this evening. Areas of fog may develop
overnight with the greatest potential west of Interstate 35.

 DAYS TWO THROUGH SEVEN  Wednesday through Monday

A storm system will impact the area late Friday through Saturday.
This system could produce moderate snowfall across portions of
northern Iowa and moderate rainfall elsewhere. This rainfall could
result in significant rises on area streams. 


Spotter activation will not be needed at this time, though reports
of any snow accumulations are appreciated.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For UNION County, IA
321 AM CDT Wed Mar 21 2018

Cloudy. North wind around 5 mph.

Cloudy in the morning then becoming mostly sunny. High in the upper 40s. Northwest wind around 5 mph.

Partly cloudy until early morning then becoming mostly cloudy. Low in the mid 30s. South wind around 5 mph.

Mostly cloudy. A 30 percent chance of light rain until late afternoon. High in the upper 50s. Southeast wind 5 to 10 mph.

Mostly cloudy. Low in the upper 30s. East wind 10 to 15 mph.

Cloudy with a 30 percent chance of light rain. Breezy. High in the lower 50s. East wind 10 to 20 mph with gusts to around 30 mph.

Cloudy. A chance of light rain through midnight, then light rain and a slight chance of thunderstorms after midnight. Breezy. Low in the upper 30s. Chance of precipitation 90 percent.

Light rain in the morning, then a chance of light rain in the afternoon. Breezy. High in the mid 40s. Chance of rain 90 percent.

Mostly cloudy. A 40 percent chance of light rain through midnight. Low in the lower 30s.

Mostly cloudy. A 20 percent chance of light rain in the afternoon. High in the upper 40s.

Mostly cloudy with a 30 percent chance of light rain. Low in the mid 30s.

Mostly cloudy. A chance of light rain possibly mixed with snow in the morning, then a chance of light rain in the afternoon. High around 50. Chance of precipitation 50 percent.

Mostly cloudy. A chance of light rain through midnight, then a chance of light rain possibly mixed with snow after midnight. Low in the mid 30s. Chance of precipitation 50 percent.

Partly sunny. A chance of light rain possibly mixed with snow in the morning, then a slight chance of light rain in the afternoon. High in the lower 50s. Chance of precipitation 30 percent.

12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2

Medium & Long Range Outlook For Iowa
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   MAR 26-30 MAR 28-APR 3    MAR       MAR-MAY                      
                 -----------  -----------  --------  ---------
   Temperature:     Normal        Below      Below     Normal                      
 Precipitation:      Above        Below     Normal      Above                      

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Almanac Information

Wednesday March 21, 2018 the 80th Day of Year

Declination 0.630000
Distance 0.999721 AU
Rise 07:15 EDT Set 19:28 EDT
Transit Meridian 13:20 EDT
Civil Twilight Begins 06:48 EDT Ends 19:55 EDT

Calculations made for central point in the state.
Time in ET -- and will vary due to location and
elevation -- Priddy

Historical Weather And Climate Facts For Today

A tornado swarm occurred in the Deep South. Between late afternoon and
early the next morning severe thunderstorms spawned 31 tornadoes in
Alabama, Mississippi, Georgia and Tennessee. The tornadoes killed 334
persons and injured 1784 others. Northern Alabama was hardest hit.
Tornadoes in Alabama killed 286 persons and caused five million dollars
damage. (David Ludlum)
Severe thunderstorms spawned thirty-one tornadoes across Arkansas,
Tennessee, Missouri, Mississippi, Alabama and Kentucky. The tornadoes
killed 343 persons and caused 15 million dollars damage. Arkansas and
Tennessee each reported thirteen tornadoes. The towns of Judsonia AR and
Henderson TN were nearly wiped off the map in what proved to be the worst
tornado outbreak of record for Arkansas. A tornado, one and a half miles
wide at times, left a church the only undamaged building at Judsonia.
(David Ludlum) (The Weather Channel)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky