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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
452 PM CST Fri Dec 15 2017

With winds out of the southwest across Iowa today, temperatures 
climbed a bit higher. Highs were anywhere from the upper 30s to mid 
40s. It was still breezy in some areas with winds anywhere from 10 to 
20 miles per hour. Other than some flurries and freezing drizzle early
this morning, the weather has been quiet. The cloud cover broke this 
morning as well bringing lots of sunshine across the state. 
Temperatures tonight will drop into the mid 20s to lower 30s.

Temperatures will be much higher tomorrow with warm air being ushered
in from the southwest. Highs in southern Iowa will reach the mid 50s.
In northern Iowa highs will be in the mid to upper 40s. The sky will
be mostly clear for much of the day, but clouds will begin to move in
tomorrow night. Lows overnight Saturday will again drop into the mid
20s to lower 30s. Early Sunday morning brings a chance for a snow and
rain mix. However, temperatures will quickly warm above freezing by 
mid day into the uper 30s to lower 40s so little snow accumulation is
expected. Into next week, not much excitement is expected weather 
wise until Thursday when an active system makes its way east. With it 
comes the potential for colder air and a greater chance for snow 
across Iowa.

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 200 AM CST SAT DEC 16 2017

   SOUTHWEST IOWA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ATLANTIC *     CLEAR     34  25  69 S12       29.73S WCI  25          
AUDUBON *      CLEAR     36  25  64 SW12      29.71S WCI  27          
CLARINDA *       N/A     34  25  69 S3          N/A                   
COUNCIL BLFS * PTCLDY    41  23  48 SW14G20   29.72S                  
CRESTON *      CLEAR     37  25  60 SW16      29.76S WCI  28          
HARLAN  *      PTCLDY    32  23  69 S9        29.74S WCI  24          
LAMONI         CLEAR     35  24  64 S13       29.79S WCI  26          
RED OAK *      PTCLDY    36  25  64 S10       29.76S WCI  28          
SHENANDOAH *   CLEAR     37  25  60 SW14      29.77F WCI  29          

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


Current Agricultural Weather Conditions in Iowa
Based on observations at 200am CST, Saturday December 16, 2017

Across Iowa...temperatures are near 26 degrees west, near 36 degrees central, and near 34 degrees east. Current sky conditions are cloudy west, clear central, and cloudy east. In the west, relative humidity is near 81%, and the dew point is near 21 degrees. In the central part of the state, relative humidity is near 62%, and the dew point is near 24 degrees. In the east, relative humidity is near 61%, and the dew point is near 22 degrees. Winds are from the east at 6 mph west, where conditions are favorable for spraying. The wind chill is near 19 degrees west. Winds are from the south at 10 mph central, where conditions are favorable for spraying. The wind chill is near 28 degrees central. Winds are from the south at 12 mph east, where conditions are favorable for spraying. The wind chill is near 25 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 39 degrees at Ottumwa. The lowest temperature is 26 degrees at Sioux 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 SHELBY County,IA

338 PM CST Fri Dec 15 2017

 DAY ONE  Tonight and Saturday

No hazardous weather is expected at this time.

 DAYS TWO THROUGH SEVEN  Saturday night through Friday

There is a chance of a mixture of light rain and light snow
late Saturday night into Sunday morning over parts of southeast
Nebraska and southwest Iowa. No accumulation is expected but it
could cause some slick spots on roads. 

There is a chance for light snow over much of eastern Nebraska 
and southwest Iowa Thursday into Thursday night, as an upper 
level disturbance and a strong cold front move through the area. 

 SPOTTER INFORMATION STATEMENT  

Spotter activation will not be needed tonight or Saturday.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For SHELBY County, IA
258 AM CST Sat Dec 16 2017

REST OF TONIGHT
Mostly clear. Lows in the upper 20s. Southwest winds 5 to 10 mph.

SATURDAY
Sunny. Highs in the lower 50s. West winds around 5 mph, becoming north in the afternoon.

SATURDAY NIGHT
Partly cloudy. Lows in the mid 20s. Northeast winds 5 to 10 mph.

SUNDAY
Colder. Mostly cloudy. Highs in the upper 30s. North winds 5 to 10 mph.

SUNDAY NIGHT
Mostly cloudy. Lows in the mid 20s. North winds up to 5 mph, becoming southwest after midnight.

MONDAY
Mostly sunny. Highs in the upper 40s.

MONDAY NIGHT
Mostly clear. Lows in the upper 20s.

TUESDAY
Sunny. Highs in the mid 40s.

TUESDAY NIGHT
Mostly clear. Lows in the mid 20s.

WEDNESDAY
Mostly sunny. Highs around 50.

WEDNESDAY NIGHT
Mostly cloudy. Lows around 30.

THURSDAY
Colder. Mostly cloudy with a 50 percent chance of snow, possibly mixed with rain. Highs in the mid 30s.

THURSDAY NIGHT
Colder. Mostly cloudy. A 50 percent chance of snow through midnight. Lows around 12.

FRIDAY
Mostly sunny. Highs in the upper 20s.

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 21-25    DEC 23-29    DEC       DEC-FEB                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below     Normal      Below                      
 Precipitation:      Above        Above     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

Saturday December 16, 2017 the 350th Day of Year

---------------------------------------------------
SUN
Declination -23.350000
Distance 0.999725 AU
Rise 08:36 EST Set 17:44 EST
Transit Meridian 13:10 EST
Civil Twilight Begins 08:05 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 16TH
HISTORIC WEATHER EVENTS
...1835...
New England experienced one of their coldest days of record. At noon on
that bitterly cold Wednesday the mercury stood at four degrees below at
Boston, 15 degrees below at Norfolk CT, and 17 degrees below at Hanover NH.
The temperature at Boston was 12 degrees below zero by sunset. Gale force
winds accompanied the severe cold, and that night a great New York City
fire destroyed much of the financial district. (David Ludlum)
...1869...
A bill was introduced in the House of Representatives, 41st Congress, 
calling for the taking [of] meteorological observations at the military 
stations in the interior of the continent, and for giving notice on the 
northern lakes and Atlantic seaboard of the approach and force of storms. 
This would be signed in to law February 9, 1870, by President Grant, 
establishing what would come to be called the National Weather Service. You 
can see the actual bill on-line at: 
 here.
...1917...
An ice jam closed the Ohio River between Warsaw KY and Rising Sun IN. The
thirty foot high ice jam held for 58 days, and backed up the river a
distance of 100 miles. (David Ludlum)
...1987...
A Pacific storm battered the coast of California with rain and high winds,
and dumped heavy snow on the mountains of California. Winds along the coast
gusted to 70 mph at Point Arguello, and winds in the Tehachapi Mountains of
southern California gusted to 100 mph at Wheeler Ridge. Snowfall totals
ranged up to 24 inches at Mammoth Mountain. Snow fell for two minutes at
Malibu Beach, and Disneyland was closed due to the weather for only the
second time in twenty-four years. A winter storm which began in the
Southern Rockies four days earlier finished its course producing snow and
high winds in New England. Snowfall totals ranged up to 19 inches at
Blanchard ME. (The National Weather Summary) (Storm Data)
...1988...
Fairbanks AK reported freezing rain and record warm temperatures. The
afternoon high of 41 degrees was 43 degrees above normal. Snow and high
winds continued to plague the mountains of southern California. Mount
Wilson CA reported two inches of rain in six hours during the early
morning, and a storm total of more than 3.50 inches of rain. (The National
Weather Summary)
...1989...
Fifty-seven cities from the Southern and Central Plains to the Appalachians
reported record low temperatures for the date, including North Platte NE
with a reading of 17 degrees below zero. Squalls in the Great Lakes Region
produced 18 inches of snow at Syracuse NY, and 30 inches at Carlisle IND.
Low pressure brought heavy snow to northern New England, with 18 inches
reported at Derby VT and Saint Johnsbury VT. (The National Weather Summary)
(Storm Data)

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