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Polk County, IA Weather and Climate Synopsis

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Weather Summary Hourly Observations Nowcast Precision Ag., Lawn & Garden Guidance
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts

US Weekly Rainfall Departure

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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
1039 AM CDT Sat Oct 20 2018

Strong winds will be the theme of the morning and afternoon as a
potent cold front drops south through the state. Already this morning
several substantial gusts have been observed, including a 59 mile per
hour gust recorded at the Mason City Airport. The strongest wind gusts
of 40 to 50 mph can be expected generally over the eastern half of the
state before winds relax this evening as high pressure moves in. The
light winds and clear skies will allow for temperatures to fall off
into the 20s.  

Dry forecast rolls right into next week with no precipitation expected
through at least Wednesday. Temperatures during that period will be
near to just below normal as a few more fronts cross the region.
Rainfall chances return of the latter half of next week as the weather
pattern begins to shift. Still a lot of uncertainty as to when and who
may see rainfall, but the good news is that the threat for heavy
rainfall will be low which will give local waterways more time to dry
out after a very wet start to the fall. 

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

Precision Agriculture Weather Forecast For POLK County

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Regional Hourly Observations For POLK County
Issued at 500 PM CDT SAT OCT 20 2018

TOPEKA         SUNNY     64  28  25 NW13      30.30R                  
MANHATTAN      SUNNY     65  28  24 N9        30.32R                  
EMPORIA        SUNNY     66  31  27 N14G24    30.30R                  
CHANUTE        SUNNY     68  36  30 N12G22    30.29R                  
WICHITA        SUNNY     69  36  29 N14       30.30F                  
OMAHA          SUNNY     55  20  25 N18       30.35R                  
LINCOLN        SUNNY     57  22  25 N18G29    30.34S                  
FALLS CITY     SUNNY     58  28  32 N15G26    30.31R                  
LAMONI         SUNNY     51  25  36 N15G26    30.31R                  
DES MOINES     SUNNY     47  20  34 N15G28    30.33R                  

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

Current Agricultural Weather Conditions in Iowa
Based on observations at 500pm CDT, Saturday October 20, 2018

Across Iowa...temperatures are near 51 degrees west, near 47 degrees central, and near 44 degrees east. Current sky conditions are sunny west, sunny central, and fair east. In the west, relative humidity is near 36%, and the dew point is near 25 degrees. In the central part of the state, relative humidity is near 34%, and the dew point is near 20 degrees. In the east, relative humidity is near 31%, and the dew point is near 15 degrees. Winds are from the northwest at 14 mph west, where conditions are not favorable for spraying due to strong winds. Winds are from the north at 15 mph with gusts at 28 mph central, where conditions are not favorable for spraying due to strong winds. Winds are from the northwest at 16 mph with gusts at 28 mph east, where conditions are not favorable for spraying due to strong winds. Based on current available observations, the highest temperature is 55 degrees at Clarinda. The lowest temperature is 41 degrees at Mason City, Estherville, and 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 POLK County,IA

332 PM CDT Sat Oct 20 2018

 DAY ONE  This afternoon and tonight

No hazardous weather is expected at this time.

 DAYS TWO THROUGH SEVEN  Sunday through Friday

No hazardous weather is expected at this time.


Spotter activation will not be needed.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For POLK County, IA
350 PM CDT Sat Oct 20 2018

Sunny, breezy. Northwest wind 15 to 25 mph with gusts to around 40 mph.

Clear, colder. Low in the upper 20s. North wind near 10 mph with gusts to around 20 mph shifting to the southwest after midnight.

Sunny. High in the mid 50s. South wind 5 to 15 mph with gusts to around 25 mph.

Mostly clear. Not as cool. Low in the upper 30s. Southwest wind 5 to 10 mph.

Sunny. High around 60. Northwest wind 5 to 10 mph.

Clear. Low in the mid 30s. Northwest wind around 5 mph.

Sunny. High in the lower 50s.

Mostly clear. Low in the lower 30s.

Mostly sunny. High in the lower 50s.

Mostly cloudy. A 20 percent chance of light showers after midnight. Low in the upper 30s.

Mostly cloudy. A 40 percent chance of light showers in the afternoon. High in the lower 50s.

Cloudy with a 50 percent chance of light showers. Low in the upper 30s.

Mostly cloudy. A 20 percent chance of light showers in the morning. High in the lower 50s.

Mostly cloudy with a 20 percent chance of light showers. Low in the lower 40s.

Light showers likely in the morning, then a chance of light showers in the afternoon. High in the mid 50s. Chance of showers 60 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 
                   OCT 26-30 OCT 28-NOV 3    OCT       OCT-DEC                      
                 -----------  -----------  --------  ---------
   Temperature:     Normal       Normal                                            
 Precipitation:     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 October 20, 2018 the 293th Day of Year

Declination -10.680000
Distance 0.999721 AU
Rise 08:33 EDT Set 19:24 EDT
Transit Meridian 13:58 EDT
Civil Twilight Begins 08:06 EDT Ends 19:51 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

An exceedingly great storm struck eastern New England causing extensive
coastal damage from Massachusetts to Maine, and the highest tide in 47
years. (David Ludlum)
Remnants of Pacific Hurricane Tico caused extensive flooding in central and
south central Oklahoma. Oklahoma City set daily rainfall records with 1.45
inch on the 19th, and 6.28 inches on the 20th. (17th-21st) (The Weather
Cold arctic air invaded the Upper Midwest, and squalls in the Lake Superior
snowbelt produced heavy snow in eastern Ashland County and northern Iron
County of Wisconsin. Totals ranged up to 18 inches at Mellen. In the
western U.S., the record high of 69 degrees at Seattle WA was their
twenty-fifth of the year, their highest number of record highs for any
given year. Bakersfield CA reported a record 146 days in a row with daily
highs 80 degrees or above. (The National Weather Summary) (Storm Data)
Unseasonably warm weather continued in the western U.S. In California,
afternoon highs of 96 degrees at Redding and Red Bluff were records for the
date. (The National Weather Summary)
Forty-nine cities reported record low temperatures for the date as readings
dipped into the 20s and 30s across much of the south central and
southeastern U.S. Lows of 32 degrees at Lake Charles LA and 42 degrees at
Lakeland FL were records for October, and Little Rock AR reported their
earliest freeze of record. Snow blanketed the higher elevations of Georgia
and the Carolinas. Melbourne FL dipped to 47 degrees shortly before
midnight to surpass the record low established that morning. Showers and
thunderstorms brought heavy rain to parts of the northeastern U.S. Autumn
leaves on the ground clogged drains and ditches causing flooding. Up to
4.10 inches of rain soaked southern Vermont in three days. Flood waters
washed 600 feet of railroad track, resulting in a train derailment. (The
National Weather Summary)(Storm Data)

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