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Clay County, IL Weather and Climate Synopsis

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36 Hr. Forecast Map
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Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts

US Weekly Rainfall Departure

US Weekly Temperature Departure
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A joint service of the UK Ag Weather Center and the National Weather Service.

Weather Summary For Central And Southeast Illinois
National Weather Service Lincoln IL
720 PM CST Mon Feb 19 2018

A warm front brought scattered showers and thunderstorms to
central and southeast Illinois on Monday, along with unseasonably
warm temperatures. Highs ranged from around 60 degrees near I-74,
to 70 degrees south of I-70.

Low pressure will track into the lower Great Lakes tonight, as a 
cold front slowly approaches from the Plains. Several waves of 
showers and thunderstorms are expected across the Midwest, for
tonight through Tuesday. Periods of heavy rain are possible, with
total rainfall amounts of 2 to 4 inches expected by midweek. This
could cause significant rises on area streams and rivers. Southerly
wind flow will produce spring-like temperatures across the 
region, through Tuesday. As the cold front pushes through on 
Tuesday night, lingering rain could change to light freezing rain,
primarily northwest of I-55.

Low temperatures tonight will range from the upper 20s in northern
Iowa, to the mid 60s in southern Illinois. Highs on Tuesday will
range from the upper 20s in northern Iowa, to near 80 degrees in
southern Indiana.

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

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Regional Hourly Observations For CLAY County
Issued at 900 PM CST MON FEB 19 2018

CARBONDALE     FAIR      67  59  75 S18G29    29.95F                  
CAIRO*         FAIR      65  56  72 SE7       30.01S                  
EFFINGHAM*     CLOUDY    66  59  77 SE15G23   29.95S                  
MARION         FAIR      66  57  73 S18       29.98S                  
MT. VERNON     CLOUDY    66  59  78 S14       29.97R                  
CENTRALIA*     CLOUDY    68  61  77 S21       29.94R                  
SALEM*         MOCLDY    68  59  73 S14G20    29.94R                  
METROPOLIS*    FAIR      67  57  69 S6        30.03S                  

Current Temperatures, Dewpoint Map, RH, Wind, Regional Obs, Surface 4-Panel
Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford

Current Agricultural Weather Conditions in Illinois
Based on observations at 900pm CST, Monday February 19, 2018

Across Illinois...temperatures are near 48 degrees north, near 64 degrees central, and near 66 degrees south. Current sky conditions are light rain north, cloudy central, and cloudy south. In the north, relative humidity is near 96%, and the dew point is near 47 degrees. In the central part of the state, relative humidity is near 80%, and the dew point is near 58 degrees. In the south, relative humidity is near 78%, and the dew point is near 59 degrees. Visibility is less than one mile north. Winds are from the south at 12 mph north, where conditions are not favorable for spraying due to light rain. Winds are from the south at 20 mph with gusts at 28 mph central, where conditions are not favorable for spraying due to strong winds. Winds are from the south at 14 mph south, where conditions are not favorable for spraying due to strong winds. The livestock cold stress index is in the no stress category north, no stress category central, and no stress category south. Based on current available observations, the highest temperature is 68 degrees at Salem, Harrisburg, and Centralia. The lowest temperature is 46 degrees at Rochelle.

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),Livestock Heat Stress Index (LSI), Wind Chill Map
Hazardous Weather Outlook For CLAY County,IL

340 PM CST Mon Feb 19 2018


Periods of showers and thunderstorms can be expected tonight. No 
severe weather is expected, however, some of the thunderstorms 
will be capable of producing heavy rainfall amounts.
With the heavy rainfall totals forecast across east central and
southeast Illinois, minor flooding is forecast along the Wabash
and Little Wabash basins in the next several days with river
levels approaching flood stage along the Embarras basin. 


Showers will be likely with a chance for thunderstorms Tuesday 
into early Wednesday. Any thunderstorms that develop during this 
time frame are not expected to be severe. The heaviest rainfall 
should fall Tuesday into Tuesday night. Current indications 
suggest 2 to 3 inches of rainfall is likely (locally higher 
amounts possible), although this is subject to change. 

Flooding is expected to continue along the Wabash, Little Wabash
and possibly the Embarras basins. 

As a cold front moves through the area early Wednesday, the rain 
may briefly change to a wintry mix west of I-57. East of I-57, the
precipitation should remain rain.

Another round of moderate to heavy rainfall is possible by Friday
and Saturday.


Spotter activation will not be needed through tonight.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For CLAY County, IL
341 PM CST Mon Feb 19 2018

Warmer, cloudy. Chance of showers and slight chance of thunderstorms in the evening, then showers likely and slight chance of thunderstorms after midnight. Near steady temperature in the mid 60s. South winds 15 to 20 mph with gusts to around 30 mph. Chance of precipitation 70 percent.

Showers and chance of thunderstorms. Highs in the lower 70s. South winds 15 to 20 mph with gusts to around 40 mph. Chance of precipitation 90 percent.

Much colder. Rain showers and chance of thunderstorms. Locally heavy rainfall possible after midnight. Lows in the upper 30s. Southwest winds 10 to 15 mph shifting to the northwest after midnight. Gusts up to 30 mph. Chance of precipitation near 100 percent.

Much colder. Cloudy. Rain showers in the morning, then chance of rain showers in the afternoon. Highs in the lower 40s. North winds 10 to 15 mph. Chance of showers 90 percent.

Rain showers likely. Lows in the mid 30s. Northeast winds around 10 mph. Chance of showers 60 percent.

Mostly cloudy with a 30 percent chance of rain showers. Highs in the lower 50s.

Not as cool. Rain showers likely. Lows in the mid 40s. Chance of showers 60 percent.

Rain showers. Highs in the upper 50s. Chance of showers 90 percent.

Rain showers. Lows in the mid 40s. Highs in the upper 50s. Chance of showers 80 percent.

Rain showers likely. Lows in the mid 40s. Chance of showers 70 percent.

Mostly sunny. Highs in the mid 50s.

Mostly clear. Lows in the mid 30s. Highs in the mid 50s.

12-48 Hr Surface, 12-48 Hr ETA 500mb/Sfc, TWC Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip
NGM 60 Hr Forecast Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford , Severe Weather Pot.-Day 1, Day 2

Medium & Long Range Outlook For Illinois
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                FEB 25-MAR 1 FEB 27-MAR 5    MAR       MAR-MAY                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above      Below     Normal                      
 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
MRF 10-Day Forecast Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford

Almanac Information

Monday February 19, 2018 the 50th Day of Year

Declination -10.910000
Distance 0.999723 AU
Rise 07:46 EST Set 18:40 EST
Transit Meridian 13:12 EST
Civil Twilight Begins 07:19 EST Ends 19:07 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

A. Lapham, in Cincinnati, wrote the first public weather forecast.
Severe thunderstorms spawned sixty tornadoes in the southeastern U.S.,
killing more than 420 persons and causing three million dollars damage.
Georgia and the Carolinas hardest were hit in the tornado outbreak. (David
A tornado struck Mount Vernon IL. The tornado killed sixteen persons along
its 62 mile path. (David Ludlum)
High winds across the southern half of the Great Plains, gusting to 85 mph,
caused the worst duststorms since the 1930s. Graders were needed in places
to clear fence high dirt drifts. (The Weather Channel)

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