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McDonough County, IL Weather and Climate Synopsis

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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
946 AM CDT Thu Sep 20 2018

Mostly sunny skies and warm and humid conditions prevailed over 
central and southeast Illinois, this morning. Overnight lows were 
in the upper 60s to lower 70s.

Mostly sunny skies and brisk southwest flow will bring another day
of well above normal, to near record high temperatures, today. While
isolated thunderstorms are possible today, better rain chances 
will remain farther north over the upper Midwest, near a slow 
moving front. As the front pushes south into the region tonight 
and Friday, scattered storms are possible. The front will stall 
near the Ohio Valley this weekend, keeping unsettled weather in 
that region. Farther north, high pressure will bring in cooler 
and less humid air.

High temperatures today will reach the mid 80s to mid 90s across
the Midwest. Lows tonight will range from the upper 50s in
northern Iowa, to the lower 70s in central Illinois.

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

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Regional Hourly Observations For MCDONOUGH County
Issued at 1200 PM CDT THU SEP 20 2018

WEST-CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

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 1200pm CDT, Thursday September 20, 2018

Across Illinois...temperatures are near 88 south. Current sky condition is sunny south. In the south, relative humidity is near 62%, and the dew point is near 73 degrees. The heat index is near 96 degrees south. The livestock heat stress category is unavailable north, unavailable central, and danger south. Winds are unavailable north. Winds are unavailable central. Winds are from the south at 12 mph south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 100/ degrees at Northerly Island. The lowest temperature is 72 degrees at Waukegan.


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 MCDONOUGH County,IL

351 AM CDT Thu Sep 20 2018

 DAY ONE  TODAY AND TONIGHT

Isolated thunderstorms can be expected this morning north of
Interstate 80. The main risk will be lightning.

Hot and humid conditions will occur this afternoon with heat 
index values of around 100, south of Highway 30.

South winds will be gusting to 35 mph this afternoon so high
profile vehicles should use caution.

Tonight, a strong cold front will sweep across the outlook area,
accompanied by a line of thunderstorms. Some of the storms may be
strong to severe this evening, but the storms should weaken
overnight. The main risk will be damaging winds. The Storm
Prediction Center has a slight risk of severe storms in northeast
Iowa, northwest of a Greeley to Dysart line. There is a marginal
risk northwest of an Orangeville, Illinois to Ottumwa, Iowa line.

Area rivers are experiencing flooding. Please see the           
latest Flood Statements and Flood Warnings for details.

 DAYS TWO THROUGH SEVEN  FRIDAY THROUGH WEDNESDAY

There is a chance of thunderstorms Monday night and Tuesday.
However, the severe weather risk appears low at this time.

 SPOTTER INFORMATION STATEMENT  

Spotter activation may be needed this evening.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For MCDONOUGH County, IL
1128 AM CDT Thu Sep 20 2018

REST OF TODAY
Sunny. High in the lower 90s. South wind 10 to 20 mph with gusts to around 30 mph. Heat index readings to 103.

TONIGHT
Mostly clear in the evening, then mostly cloudy with a 40 percent chance of showers and thunderstorms after midnight. Low in the upper 60s. Southwest wind 10 to 20 mph with gusts to around 25 mph. Heat index readings to 96.

FRIDAY
Cooler. Partly sunny. A 20 percent chance of showers and thunderstorms in the morning. High in the lower 70s. Northwest wind 10 to 15 mph with gusts to around 25 mph.

FRIDAY NIGHT
Much cooler. Partly cloudy. Low in the upper 40s. North wind 10 to 15 mph.

SATURDAY
Sunny. High around 70. Northeast wind 5 to 10 mph.

SATURDAY NIGHT
Mostly clear. Low in the upper 40s.

SUNDAY
Sunny. High in the mid 70s.

SUNDAY NIGHT
Mostly clear. Low in the mid 50s.

MONDAY
Mostly sunny. High in the mid 70s.

MONDAY NIGHT AND TUESDAY
Mostly cloudy with a 50 percent chance of showers and thunderstorms. Low in the lower 60s. High in the mid 70s.

TUESDAY NIGHT
Cooler. Mostly cloudy. Low around 50.

WEDNESDAY
Mostly sunny. High in the upper 60s.

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
                             ILLINOIS                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   SEP 25-29 SEP 27-OCT 3    SEP       SEP-NOV                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below                                            
 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
MRF 10-Day Forecast Meteograms : Springfield , Peoria , Quad City , Chicago (O'Hare) , Rockford

Almanac Information

Thursday September 20, 2018 the 263th Day of Year

---------------------------------------------------
SUN
Declination 0.710000
Distance 0.999719 AU
Rise 07:45 EDT Set 19:59 EDT
Transit Meridian 13:52 EDT
Civil Twilight Begins 07:19 EDT Ends 20:24 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

SEPTEMBER 20TH
HISTORIC WEATHER EVENTS
...1845...
A tornado traveled 275 miles across Lake Ontario, New York and Lake
Champlain. (Sandra and TI Richard Sanders - 1987)
...1926...
A hurricane which hit Miami FL on the 18th, pounded Pensacola with wind
gusts to 152 mph. Winds raged in excess of 100 mph for four hours, and
above 75 mph for 20 hours. (The Weather Channel)
...1967...
Hurricane Beulah moved into South Texas, and torrential rains from the
hurricane turned the rich agricultural areas of South Texas into a large
lake. Hurricane Beulah also spawned a record 115 tornadoes. (David Ludlum)
...1983...
The temperature at West Yellowstone MT plunged to six degrees below zero,
while the temperature at San Francisco CA soared to 94 degrees. (The
Weather Channel)
...1987...
Afternoon and evening thunderstorms produced severe weather in Oklahoma and
west Texas. In Oklahoma, a thunderstorm at Seiling produced three inches of
rain in one hour, golf ball size hail, and wind gusts to 60 mph which
collapsed a tent at the state fair injuring nine persons. (The National
Weather Summary) (Storm Data)
...1988...
Showers and thunderstorms produced locally heavy rains in central Wyoming,
and snow in some of the higher elevations. Casper WY reported 1.75 inches
of rain in 24 hours, and a thunder- storm north of the Wild Horse Reservoir
produced 1.90 inches of rain in just forty minutes.
...1989...
Hugo jilted Iris. Hurricane Hugo churned toward the South Atlantic Coast,
gradually regaining strength along the way. Tropical Storm Iris got too
close to Hugo, and began to weaken. A cold front brought strong and gusty
winds to the Great Basin and the Southern Plateau Region, with wind gusts
to 44 mph reported at Kingman AZ. (The National Weather Summary)
...2000...
Thunderstorm winds gusting to 115 mph snapped telephone poles in Brandenburg 
(Meade County), Kentucky. (NWS Louisville)

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