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Osceola County, IA Weather and Climate Synopsis

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Weather Summary for Iowa
National Weather Service Des Moines IA
537 AM CST Sun Dec 17 2017

Mostly cloudy conditions were present across much of the state
throughout the overnight hours. Some fog was reported in portions of
northern Iowa reducing visibilities to below one mile at times through
the night. Early morning temperatures range from the mid 20s to the
mid 30s across Iowa. Winds are generally out of the north to northeast
at around 10 mph. 

A weak upper level disturbance will push through the state today
bringing a chance for some light rain to portions of southern central
and southern Iowa. Otherwise mainly dry and mild conditions are
expected through Wednesday. A stronger weather system has potential 
to impact the region Thursday into early Friday. This will bring the
chance for widespread precipitation to much of Iowa, with a chance for
accumulating snowfall to portions of the state. The storm track,
timing and any precipitation amounts are still to be determined. Stay
tuned for forecast updates over the next few days. 

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

Precision Agriculture Weather Forecast For OSCEOLA County


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Regional Hourly Observations For OSCEOLA County
Issued at 500 AM CST SUN DEC 17 2017

   NORTHWEST IOWA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARROLL *      PTCLDY    25  23  93 N9        30.00R WCI  15          
CHEROKEE *     CLOUDY    27  27 100 NE6       30.02S FOG     WCI  20  
LE MARS *      CLOUDY    27  25  93 NE7       30.02R WCI  19          
ORANGE CITY *  CLOUDY    27  27 100 NE5       30.00S FOG     WCI  21  
SHELDON *      FOG       25  25 100 NE12      30.00S VSB 1/2 WCI  14  
SIOUX CITY     PTCLDY    24  22  91 CALM      30.04R                  
SPENCER        FOG       27  26  96 NE14      30.02F VSB 1   WCI  16  
STORM LAKE *   FOG       27  27 100 NE20      30.00R VSB 1/4 WCI  13  

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


Current Agricultural Weather Conditions in Iowa
Based on observations at 500am CST, Sunday December 17, 2017

Across Iowa...temperatures are near 24 degrees west, near 31 degrees central, and near 30 degrees east. Current sky conditions are partly cloudy west, cloudy central, and cloudy east. In the west, relative humidity is near 91%, and the dew point is near 22 degrees. In the central part of the state, relative humidity is near 75%, and the dew point is near 24 degrees. In the east, relative humidity is near 85%, and the dew point is near 26 degrees. Winds are calm west, where conditions are favorable for spraying. Winds are from the northeast at 5 mph central, where conditions are favorable for spraying. The wind chill is near 26 degrees central. Winds are from the east at 8 mph east, where conditions are favorable for spraying. The wind chill is near 22 degrees east. The livestock cold stress index is in the no stress category west, no stress category central, and no stress category east. Based on current available observations, the highest temperature is 40 degrees at Lamoni. The lowest temperature is 22 degrees at Fort Dodge.


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 OSCEOLA County,IA

404 AM CST Sat Dec 16 2017

 DAY ONE  Today and Tonight

No hazardous weather is expected at this time.

 DAYS TWO THROUGH SEVEN  Sunday through Friday

Accumulating snow is possible next Thursday. At this point, snow
fall amounts and impacts remain uncertain. 

 SPOTTER INFORMATION STATEMENT  

Spotter activation will not be needed.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For OSCEOLA County, IA
457 AM CST Sun Dec 17 2017


DENSE FOG ADVISORY IN EFFECT UNTIL NOON CST TODAY

TODAY
Cloudy. Widespread dense fog in the morning. Highs around 35. North winds 5 to 10 mph.

TONIGHT
Mostly cloudy in the evening then becoming partly cloudy. Lows around 24. Southwest winds 5 to 10 mph.

MONDAY
Partly cloudy. Highs around 44. Southwest winds 10 to 15 mph with gusts to around 25 mph.

MONDAY NIGHT
Mostly cloudy in the evening then becoming partly cloudy. Lows around 27. Southwest winds 10 to 15 mph becoming west 5 to 10 mph after midnight.

TUESDAY
Sunny. Highs around 41. Northwest winds 10 to 15 mph.

TUESDAY NIGHT
Partly cloudy in the evening then becoming mostly cloudy. Lows around 21.

WEDNESDAY
Partly sunny. Highs around 41.

WEDNESDAY NIGHT
Mostly cloudy. Lows around 23.

THURSDAY
Cloudy with snow. Highs around 28. Chance of snow 80 percent.

THURSDAY NIGHT
Mostly cloudy. Snow likely in the evening, then chance of snow after midnight. Lows around 9 above. Chance of snow 70 percent.

FRIDAY
Partly sunny. Highs around 19.

FRIDAY NIGHT
Mostly cloudy. Lows around 11.

SATURDAY
Partly sunny. Highs around 19.

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 
                   DEC 22-26    DEC 24-30    DEC       DEC-FEB                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below     Normal      Below                      
 Precipitation:     Normal       Normal     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

Sunday December 17, 2017 the 351th Day of Year

---------------------------------------------------
SUN
Declination -23.380000
Distance 0.999725 AU
Rise 08:37 EST Set 17:44 EST
Transit Meridian 13:10 EST
Civil Twilight Begins 08:06 EST Ends 18:15 EST

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

DECEMBER 17TH
HISTORIC WEATHER EVENTS
...1884...
A three week blockade of snow began at Portland OR. A record December total
of 34 inches was received. (David Ludlum)
...1924...
A severe icestorm struck central Illinois. It coated the ground with nearly
two inches of glaze at Springfield. The storm caused 21 million dollars
damage along with much hardship. Ice was on the trees until the 4th of
January, and electricity was not restored until January 10th. (David
Ludlum)
...1929...
An icestorm in western New York State resulted in much damage and hardship.
A Buffalo report stated, "one was kept awake by the breaking limbs, which
snapped off with a report much louder than a rifle shot." (17th-18th) (The
Weather Channel)
...1987...
A storm in the southwestern U.S. brought heavy rain and heavy snow to parts
of California, Nevada, Arizona, Utah and New Mexico. Charleston NV was
blanketed with 12 inches of snow. Lake Havasu City AZ was drenched with
2.26 inches of rain. (Storm Data) (The National Weather Summary)
...1988...
Squalls brought locally heavy snow to the southeastern shores of Lake
Michigan. Totals in Michigan ranged up to 14 inches at Harvey. Totals in
Ohio ranged up to 16 inches at Chardon. (The National Weather Summary)
(Storm Data)
...1989...
Twenty-one cities from Kentucky to Pennsylvania reported record low
temperatures for the date, including Columbus OH with a reading of 12
degrees below zero. Heavy snow continued in the Colorado Rockies. Vail
received 65 inches of snow between the 14th and the 18th of December.
Steamboat Springs was buried under 74 inches, and reported a total of 108
inches of snow between the 10th and the 18th of the month. (The National
Weather Summary) (Storm Data)

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