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Shelby County, IA Weather and Climate Synopsis

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Weather Summary for Iowa
National Weather Service Des Moines IA
1255 AM CDT Fri Apr 26 2024

Today: 

Clouds had spread over the state early this morning and winds from 
the southeast were averaging 10 to 20 mph with gusts to near 30 mph in
some places. Over western Iowa, showers and storms were just crossing
the Missouri River into western Iowa after midnight this morning. 
Temperatures in most locations were in the 50s.

The showers and embedded thunderstorms will move into central Iowa by
sunrise today and spread across eastern Iowa this morning. As this 
wave of precipitation moves out later this morning and afternoon, 
clouds will remain over northern into central Iowa with some breaks of
sunshine over southern Iowa, particularly southwest. Strong to severe
storms are expected to develop near the Missouri River late this 
afternoon and push into western and central Iowa this evening and 
eastern Iowa late evening and after midnight. Large hail, a few 
tornadoes, and strong wind gusts will be possible with this activity. 

In addition to the stormy weather, it will be breezy with wind speeds
averaging 15 to 25 mph and gusts of 25 to 35 mph much of the time 
today and through this weekend as well.

Tonight and beyond: 

There should be a break in widespread activity after the storms exit
tonight until later Saturday afternoon when strong to severe storms 
are once again expected. In addition, storms moving over the same area
with little break between rounds may result in ponding in low lying 
and poor drainage areas and perhaps localized flooding as storms
continue into Saturday night. There may be some lingering showers or 
storms on Sunday, but another round of strong to severe storms will 
be possible later in the day into the evening. Anyone with outdoor 
plans should have ways to receive weather warnings and know where 
nearby shelter is located in case threatening weather nears their 
location.

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

Precision Agriculture Weather Forecast For SHELBY County


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Regional Hourly Observations For SHELBY County
Issued at 500 PM CDT FRI APR 26 2024

   SOUTHWEST IOWA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ATLANTIC *     PTSUNNY   68  61  77 SE21G35   29.37F TC  20           
AUDUBON *      CLOUDY    64  61  88 SE15      29.42F TC  18           
CLARINDA *     MOSUNNY   72 N/A N/A S16G29    29.42F TC  22           
COUNCIL BLFS * PTSUNNY   68  66  94 SE22G37   29.28F TC  20           
CRESTON *      CLOUDY    66  63  88 SE24G39   29.46F TC  19           
HARLAN  *      CLOUDY    66  61  82 SE15G26   29.39F TC  19           
LAMONI         CLOUDY    66  60  81 SE16G35   29.51F TC  19           
RED OAK *      PTSUNNY   73  63  68 SE28G43   29.36F TC  23           
SHENANDOAH *   PTSUNNY   72  64  78 S29G37    29.33F TC  22           

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


Current Agricultural Weather Conditions in Iowa
Based on observations at 500pm CDT, Friday April 26, 2024

Across Iowa...temperatures are near 64 degrees west, near 61 degrees central, and near 55 degrees east. Current sky conditions are cloudy west, cloudy central, and cloudy east. In the west, relative humidity is near 87%, and the dew point is near 60 degrees. In the central part of the state, relative humidity is near 83%, and the dew point is near 56 degrees. In the east, relative humidity is near 86%, and the dew point is near 51 degrees. Winds are from the southeast at 18 mph with gusts at 33 mph west, where conditions are not favorable for spraying due to strong winds. Winds are from the east at 16 mph with gusts at 28 mph central, where conditions are not favorable for spraying due to strong winds. Winds are from the southeast at 21 mph with gusts at 30 mph east, where conditions are not favorable for spraying due to strong winds. Based on current available observations, the highest temperature is 72 degrees at Clarinda. The lowest temperature is 49 degrees at Dubuque.


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 SHELBY County,IA

122 PM CDT Fri Apr 26 2024

 DAY ONE  This Afternoon and Tonight

Severe weather is likely across much of eastern Nebraska and
southwest Iowa this afternoon and evening. All hazards are
possible, including large hail up to three inches in diameter, a
few strong tornadoes, and thunderstorm winds up to 70 mph. Much 
of eastern Nebraska and southwest Iowa are in an enhanced risk of
severe weather. The best timeframe for severe storms should be 
from 2 pm through 8 pm. Be prepared to implement severe weather 
safety plans this afternoon and evening. 

 DAYS TWO THROUGH SEVEN  Saturday through Thursday

Another round of severe weather is likely late Saturday afternoon
into Saturday night, especially along and south of I-80. Again, 
all severe hazards are possible, including hail up to three inches
in diameter, a few strong tornadoes, and thunderstorm winds up to
70 mph. 

Severe weather is again possible Sunday afternoon into evening in
parts of southeast Nebraska and southwest Iowa. Hail up to 
quarter size and thunderstorm winds up to 60 mph are the main 
hazards, but an isolated weak tornado couldn't be ruled out as 
well.

 SPOTTER INFORMATION STATEMENT  

Spotter activation will likely be required on both this afternoon
and evening and Saturday evening.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For SHELBY County, IA
245 PM CDT Fri Apr 26 2024


TORNADO WATCH 140 IN EFFECT UNTIL 7 PM CDT THIS EVENING

REST OF TODAY
Showers with thunderstorms likely. Some thunderstorms may be severe with damaging winds, large hail, and tornadoes. Breezy with highs in the upper 60s. Southeast winds 20 to 25 mph with gusts up to 35 mph. Chance of rain 90 percent.

TONIGHT
Showers with thunderstorms likely in the evening. Some thunderstorms may be severe with damaging winds, large hail, and tornadoes. Lows in the upper 40s. South winds 15 to 20 mph, becoming southwest after midnight. Gusts up to 35 mph. Chance of rain near 100 percent.

SATURDAY
Partly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Southwest winds 5 to 10 mph. Chance of rain 40 percent.

SATURDAY NIGHT
Showers. A chance of thunderstorms in the evening, then thunderstorms likely after midnight. Lows in the mid 50s. East winds 10 to 15 mph. Chance of rain near 100 percent.

SUNDAY
A chance of thunderstorms. Showers. Highs around 70. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent.

SUNDAY NIGHT
Showers and thunderstorms likely in the evening. Cooler with lows in the lower 40s. Chance of rain 60 percent.

MONDAY
Mostly sunny. Highs in the mid 60s.

MONDAY NIGHT
Mostly clear. Lows in the upper 40s.

TUESDAY
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Warmer with highs in the mid 70s. Chance of rain 40 percent.

TUESDAY NIGHT
Mostly clear with a chance of showers. Lows in the upper 40s. Chance of rain 50 percent.

WEDNESDAY
Mostly sunny with a chance of showers and thunderstorms. Highs around 70. Chance of rain 50 percent.

WEDNESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 40s. Chance of rain 50 percent.

THURSDAY
Mostly sunny. Highs in the mid 60s.

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 
                 MAY 2-MAY 6 MAY 4-MAY 10    JUN       JUN-AUG                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above                                            
 Precipitation:      Above        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

Friday April 26, 2024 the 117th Day of Year

---------------------------------------------------
SUN
Declination 14.010000
Distance 0.999718 AU
Rise 07:15 EDT Set 21:09 EDT
Transit Meridian 14:11 EDT
Civil Twilight Begins 06:46 EDT Ends 21:38 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

APRIL 26TH
HISTORIC WEATHER EVENTS
...1834...
Killer frosts were reported in the Deep South. The frost was quite severe
around Huntsville AL, and highlighted a backward spring in the South that
year. (David Ludlum)
...1978...
An unusually strong occluded front swept out of the Gulf of Alaska and
produced the first April thunderstorm of record at Fairbanks. Pea size hail
fell northeast of Fairbanks from thunderstorms whose tops were less than
8000 feet. (The Weather Channel)
...1984...
Severe thunderstorms associated with an intense cyclone spawned a total of
forty-seven tornadoes in two days from Louisiana to Upper Michigan. The
tornadoes killed 16 persons and injured 259 others. (Storm Data)


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