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Brown County, IL Weather and Climate Synopsis

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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
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 BROWN 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 BROWN County,IL

316 AM CDT Thu Sep 20 2018

 DAY ONE  Today and tonight.

Isolated thunderstorms are possible between 1pm and 7pm. 

 DAYS TWO THROUGH SEVEN  Friday through Wednesday.

Thunderstorms are possible on Friday, with a marginal risk for 
severe thunderstorms in far southern Illinois between 12pm and 5pm.

Thunderstorm chances will continue in southern Missouri and Illinois
through the weekend, expanding to the rest of the area early next
week.

 SPOTTER INFORMATION STATEMENT  

Spotter activation is not anticipated through tonight.

NWS Severe Weather Map , Convective Outlook


7-Day Forecast For BROWN County, IL
1006 AM CDT Thu Sep 20 2018

REST OF TODAY
Hot and humid. Mostly sunny. Chance of showers and slight chance of thunderstorms in the afternoon. High in the lower 90s. Heat index readings of around 100. South wind 10 to 15 mph. Chance of rain 30 percent.

TONIGHT
Mostly clear until early morning then becoming mostly cloudy. Chance of showers and slight chance of thunderstorms after midnight. Low around 70. Southwest wind 10 to 15 mph. Chance of rain 30 percent.

FRIDAY
Cooler. Mostly cloudy with a 20 percent chance of showers and thunderstorms in the morning, then partly sunny in the afternoon. High in the mid 70s. Temperature falling into the 60s in the afternoon. Northwest wind 10 to 15 mph.

FRIDAY NIGHT
Cooler. Partly cloudy. Low in the lower 50s. North wind around 10 mph in the evening becoming light after midnight.

SATURDAY
Mostly sunny. High in the lower 70s. Light wind.

SATURDAY NIGHT
Clear. Low around 50.

SUNDAY
Sunny. High in the mid 70s.

SUNDAY NIGHT
Mostly clear with a 20 percent chance of showers and thunderstorms. Low in the mid 50s.

MONDAY
Partly sunny with a 30 percent chance of showers and thunderstorms. High in the upper 70s.

MONDAY NIGHT
Partly cloudy with chance of showers and slight chance of thunderstorms. Low in the lower 60s. Chance of rain 40 percent.

TUESDAY
Mostly cloudy with a 50 percent chance of showers and thunderstorms. High in the mid 70s. Temperature steady or slowly falling in the afternoon.

TUESDAY NIGHT
Mostly cloudy with chance of showers and slight chance of thunderstorms. Low in the lower 50s. Chance of rain 30 percent.

WEDNESDAY
Partly cloudy. High around 70.

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