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Union County, IA Weather and Climate Synopsis

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Weather Summary for Iowa
National Weather Service Des Moines IA
520 AM CDT Wed Jul 18 2018

Other than a few mid and high level clouds moving across the state
periodically, the sky was mostly clear across Iowa overnight. At 5 AM
temperatures ranged from the lower to mid 60s north and west with mid
to upper 60s south and east. The wind was southeast at speeds under 
10 mph. 

An upper level trough of low pressure will make its way across the
region today through Thursday bringing showers and thunderstorms back
into the forecast. Stronger storms will be capable of heavy rainfall
and the best chance for that will be across the northwest today and
the northeast on Thursday. Any severe potential will mainly reside
over Nebraska but there is at least a marginal risk for severe storms
across far western Iowa this afternoon and evening. This system will
exit to the east on Friday with far eastern Iowa still having a chance
for rain in the morning.  

High pressure will build into the region for the weekend bringing a
return to dry conditions with comfortable highs and humidity levels.
Highs today will be in the 80s. Highs will vary Thursday with mid 70s
northeast to near 90 southwest. Then Friday through the weekend highs
will be in the mid 70s north to the mid 80s south. Overnight lows
through the period will be in the 60s.   

The next chance for rain will come Monday and Tuesday when a strong
low moves across southern Canada dropping a cold front through the
region followed by a trough of low pressure setting up over the Great
Lakes and setting us up for a bit of cooler weather for the middle of
next week.

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 800 AM CDT WED JUL 18 2018

   SOUTHWEST IOWA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ATLANTIC *     SUNNY     68  66  94 N3        30.08S                  
AUDUBON *      MOSUNNY   66  63  88 CALM      30.10S                  
CLARINDA *     CLOUDY    70  68  94 CALM      30.08S                  
COUNCIL BLFS * MOSUNNY   70  64  83 SE5       30.07S                  
CRESTON *      SUNNY     72  66  83 E6        30.10R                  
HARLAN  *        N/A     68  64  88 CALM      30.09S                  
LAMONI         CLOUDY    72  64  76 E5        30.08R                  
RED OAK *      PTSUNNY   72  66  83 CALM      30.07S                  
SHENANDOAH *   CLOUDY    68  68 100 NE5       30.06S                  

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


Current Agricultural Weather Conditions in Iowa
Based on observations at 800am CDT, Wednesday July 18, 2018

Across Iowa...temperatures are near 67 degrees west, near 72 degrees central, and near 68 degrees east. Current sky conditions are mostly sunny west, mostly sunny central, and fair east. In the west, relative humidity is near 90%, and the dew point is near 64 degrees. In the central part of the state, relative humidity is near 81%, and the dew point is near 66 degrees. In the east, relative humidity is near 73%, and the dew point is near 59 degrees. The livestock heat stress category is no stress west, no stress central, and no stress east. Winds are from the east at 3 mph west, where conditions are favorable for spraying. Winds are from the east at 6 mph central, where conditions are favorable for spraying. Winds are from the southeast at 9 mph east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 72 degrees at Lamoni and Des Moines. The lowest temperature is 65 degrees at Waterloo and Estherville.


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

443 AM CDT Wed Jul 18 2018

 DAY ONE  Today and tonight

Thunderstorm chances return to the region this evening and tonight.
A few strong storms are possible. Locally heavy rainfall is also 
possible.


 DAYS TWO THROUGH SEVEN  Thursday through Tuesday

Periodic thunderstorm chances continue through early Friday. A 
marginal threat for severe storms with large hail and damaging 
thunderstorm winds Thursday morning across the northeast two 
thirds of the outlooked area. Locally heavy rainfall is also 
possible.


Additional non-severe thunderstorm chances return again Monday.

 SPOTTER INFORMATION STATEMENT  

Limited spotter activation will be possible Thursday 
afternoon/evening over the northeast.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For UNION County, IA
736 AM CDT Wed Jul 18 2018

TODAY
Mostly sunny. A 40 percent chance of thunderstorms in the afternoon. High in the lower 80s. Southeast wind 5 to 10 mph.

TONIGHT
Mostly cloudy. A chance of thunderstorms through midnight, then thunderstorms likely after midnight. Low in the upper 60s. Southeast wind 5 to 10 mph. Chance of thunderstorms 60 percent.

THURSDAY
Mostly cloudy with thunderstorms likely through mid morning, then mostly sunny with a chance of thunderstorms in the late morning and afternoon. High in the upper 80s. South wind around 10 mph shifting to the southwest with gusts to around 25 mph in the afternoon. Chance of thunderstorms 60 percent.

THURSDAY NIGHT
Partly cloudy with a 30 percent chance of thunderstorms. Low in the mid 60s. West wind 5 to 10 mph.

FRIDAY
Mostly sunny. High in the mid 80s. West wind 5 to 10 mph.

FRIDAY NIGHT
Partly cloudy. Low in the mid 60s.

SATURDAY
Sunny. High in the lower 80s.

SATURDAY NIGHT
Mostly clear. Low in the lower 60s.

SUNDAY
Mostly sunny. High in the mid 80s.

SUNDAY NIGHT
Partly cloudy. Low in the mid 60s.

MONDAY
Partly sunny. A 20 percent chance of thunderstorms in the afternoon. High in the lower 80s.

MONDAY NIGHT
Mostly cloudy. Low in the lower 60s.

TUESDAY
Mostly sunny. High around 80.

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
                                 IOWA                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   JUL 23-27 JUL 25-JUL 31    JUL       JUL-SEP                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below      Above     Normal                      
 Precipitation:      Below       Normal     Normal     Normal                      

....  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 July 18, 2018 the 199th Day of Year

---------------------------------------------------
SUN
Declination 20.840000
Distance 0.999716 AU
Rise 06:55 EDT Set 21:45 EDT
Transit Meridian 14:20 EDT
Civil Twilight Begins 06:23 EDT Ends 22:17 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

//////////////////////////
JULY 18TH...HISTORIC WEATHER EVENTS
...1889...
A cloudburst in West Virginia along the small creeks in Wirt County,
Jackson County and Wood County claimed twenty lives. Rockport WV reported
nineteen inches of rain in two hours and ten minutes that Thursday evening.
Tygart Creek rose 22 feet in one hour, and villages were swept away on
Tygart, Slate, Tucker, and Sandy Creeks. (The Weather Channel)
...1942...
A record deluge occurred at Smethport in northern Pennsylvania, with 30.7
inches in just six hours. The downpours and resultant flooding in
Pennsylvania were devastating. (David Ludlum)
...1986...
One of the most "photo-genic" tornadoes touched down in the northern
suburbs of Minneapolis MN during the late afternoon. The very slow moving
tornado actually appeared live on the evening news by way of an aerial
video taken by the KARE-TV helicopter crew. The tornado, unlike most, was
quite the prima donna, staying visible to tens of thousands of persons for
thirty minutes. It was moderate in intensity, with winds of 113-157 mph,
and caused 650 thousand dollars damage. (Storm Data)
...1987...
Cool weather prevailed in the western U.S. Seven cities reported record low
temperatures for the date, including Alamosa CO with a reading of 38
degrees. The low of 52 degrees at Bakersfield CA was a record for July. Up
to eight inches of snow covered the Northern Sierra Nevada Range of
California from a storm the previous day. During that storm, winds gusting
to 52 mph at Slide Mountain NV produced a wind chill reading of 20 degrees
below zero. Susanville CA reached 17 degrees that previous day, Blue Canyon
CA dipped to a July record of 36 degrees, and the high of 44 degrees at
Klamath Falls OR smashed their previous record for July by ten degrees.
(The National Weather Summary)
...1988...
Sweltering heat continued in California, with record highs of 111 degrees
at Redding and 112 degrees at Sacramento. Death Valley CA hit 127 degrees.
Late afternoon and evening thunderstorms in the Central Plains Region
produced baseball size hail at Kimball NE, wind gusts to 79 mph at Colby
KS, and six inches of rain near Lexington NE. (The National Weather
Summary) (Storm Data)
...1989...
Thunderstorms produced severe weather in Oklahoma, northern Texas and
Arkansas during the afternoon, and into the night. Thunderstorms produced
baseball size hail at Stamford TX, and wind gusts to 92 mph near
Throckmorton TX. Record heat continued in the southwestern U.S. Phoenix AZ
reported a record high of 115 degrees, and a 111 degree reading at Midland
TX was second only to their all-time record high of 112 degrees established
sixteen days earlier. (The National Weather Summary)


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