Alert archive / Illinois / Red Flag Warnings in 2012
Red Flag Warning 4, NWS Chicago, IL
NWS Chicago, IL issued this red flag warning at Apr 8, 2012, 4:47 AM CDT for 4 counties in Indiana; 15 counties in Illinois. It took effect at Apr 8, 2012, 11:00 AM CDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 8, 2012, 4:47 AM CDT (09:47 UTC)
- In effect from
- Apr 8, 2012, 11:00 AM CDT
- Expired
- Apr 8, 2012, 7:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Chicago, IL
Counties Boone County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Will County, IL, Winnebago County, IL, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN
The radar
The Chicago radar (KLOT), 17 km from the middle of the area, began a volume at 09:46 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 9.8 hours before the alert went out and 176 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 0 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 189 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
325 WWUS83 KLOT 080947 RFWLOT URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO IL 447 AM CDT SUN APR 8 2012 ILZ003>006-008-011>014-081630- /O.UPG.KLOT.FW.A.0003.120408T1600Z-120409T0000Z/ /O.NEW.KLOT.FW.W.0004.120408T1600Z-120409T0000Z/ WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-DE KALB-KANE-DUPAGE-COOK- 447 AM CDT SUN APR 8 2012 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT THIS EVENING FOR LOW RELATIVE HUMIDITY AND STRONG WINDS FOR FAR NORTHERN AND NORTHEAST ILLINOIS... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A RED FLAG WARNING FOR LOW RELATIVE HUMIDITY AND STRONG WINDS...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FAR NORTHERN AND NORTHEAST ILLINOIS...INCLUDING MUCH OF CHICAGOLAND AND THE ROCKFORD AREA. * WINDS...WEST 15 TO 20 MPH WITH GUSTS UP TO 30 MPH. * TIMING...FROM LATE THIS MORNING THROUGH LATE THIS AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 20 TO 25 PERCENT. * IMPACTS...CONDITIONS MAY BECOME FAVORABLE FOR RAPID GROWTH OF WILDFIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ INZ001-002-081630- /O.UPG.KLOT.FW.A.0003.120408T1600Z-120409T0000Z/ /O.NEW.KLOT.FW.W.0004.120408T1600Z-120409T0000Z/ LAKE IN-PORTER- 447 AM CDT SUN APR 8 2012 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT THIS EVENING FOR FOR LOW RELATIVE HUMIDITY AND STRONG WINDS FOR FAR NORTHWEST INDIANA... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A RED FLAG WARNING FOR LOW RELATIVE HUMIDITY AND STRONG WINDS...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FAR NORTHWEST INDIANA...INCLUDING THE INDIANA DUNES AREA. * WINDS...NORTHWEST 15 TO 20 MPH LATE THIS MORNING AND EARLY AFTERNOON...THEN NORTHWEST TO NORTH 15 TO 20 MPH DURING THE MID TO LATE AFTERNOON. GUSTS UP TO 30 MPH THROUGH THE ENTIRE AFTERNOON. * TIMING...FROM LATE THIS MORNING THROUGH LATE THIS AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 20 TO 25 PERCENT EARLY THIS AFTERNOON. * IMPACTS...CONDITIONS MAY BECOME FAVORABLE FOR RAPID GROWTH OF WILD FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ ILZ010-019>023-032-033-039-INZ010-011-019-081630- /O.CON.KLOT.FW.A.0003.120408T1600Z-120409T0000Z/ LEE-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS- FORD-NEWTON-JASPER-BENTON- 447 AM CDT SUN APR 8 2012 /547 AM EDT SUN APR 8 2012/ ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM 11 AM CDT /NOON EDT/ THIS MORNING THROUGH THIS EVENING FOR PORTIONS OF THE NORTHERN ILLINOIS AND NORTHWEST INDIANA... * AFFECTED AREA...PORTIONS OF NORTHERN ILLINOIS AND NORTHWEST INDIANA GENERALLY SOUTH OF U.S. HIGHWAY 30...INCLUDING THE MIDEWIN NATIONAL TALLGRASS PRAIRIE. * WINDS...NORTHWEST 10 TO 15 MPH WITH GUSTS POSSIBLY UP TO 30 MPH. * TIMING...FROM LATE THIS MORNING THROUGH LATE THIS AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 15 TO 20 PERCENT. * IMPACTS...CONDITIONS MAY BECOME FAVORABLE FOR RAPID GROWTH OF WILD FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$
3 follow-up statements
288 WWUS83 KLOT 081519 RFWLOT URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO IL 1019 AM CDT SUN APR 8 2012 ILZ032-033-039-INZ019-081630- /O.CAN.KLOT.FW.A.0003.120408T1600Z-120409T0000Z/ LIVINGSTON-IROQUOIS-FORD-BENTON- 1019 AM CDT SUN APR 8 2012 /1119 AM EDT SUN APR 8 2012/ ...FIRE WEATHER WATCH IS CANCELLED FOR PORTIONS OF THE NORTHERN ILLINOIS AND NORTHWEST INDIANA... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE FIRE WEATHER WATCH. WHILE DRY CONDITIONS ARE ANTICIPATED ACROSS THE AFFECTED AREA... AND FIRE DANGER WILL REMAIN HIGHER THAN NORMAL...WINDS ARE EXPECTED TO REMAIN BELOW RED FLAG WARNING CRITERIA. $$ ILZ010-019>023-082330- /O.UPG.KLOT.FW.A.0003.120408T1600Z-120409T0000Z/ /O.EXA.KLOT.FW.W.0004.120408T1600Z-120409T0000Z/ LEE-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE- 1019 AM CDT SUN APR 8 2012 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR LOW RELATIVE HUMIDITY AND STRONG WINDS FOR FAR NORTHERN AND NORTHEAST ILLINOIS... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A RED FLAG WARNING FOR LOW RELATIVE HUMIDITY AND STRONG WINDS...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...NORTHERN AND NORTHEASTERN ILLINOIS. * WINDS...NORTHWEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * TIMING...FROM LATE THIS MORNING THROUGH LATE THIS AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 15 TO 20 PERCENT. * IMPACTS...CONDITIONS WILL BECOME FAVORABLE FOR RAPID GROWTH OF WILD FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ INZ010-011-082330- /O.UPG.KLOT.FW.A.0003.120408T1600Z-120409T0000Z/ /O.EXA.KLOT.FW.W.0004.120408T1600Z-120409T0000Z/ NEWTON-JASPER- 1019 AM CDT SUN APR 8 2012 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR LOW RELATIVE HUMIDITY AND STRONG WINDS FOR FAR NORTHWEST INDIANA... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A RED FLAG WARNING FOR LOW RELATIVE HUMIDITY AND STRONG WINDS...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...NORTHWESTERN INDIANA. * WINDS...NORTHWEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * TIMING...FROM LATE THIS MORNING THROUGH LATE THIS AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 15 TO 20 PERCENT. * IMPACTS...CONDITIONS WILL BECOME FAVORABLE FOR RAPID GROWTH OF WILD FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ ILZ003>006-008-011>014-082330- /O.CON.KLOT.FW.W.0004.120408T1600Z-120409T0000Z/ WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-DE KALB-KANE-DUPAGE-COOK- 1019 AM CDT SUN APR 8 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR LOW RELATIVE HUMIDITY AND STRONG WINDS FOR FAR NORTHERN AND NORTHEAST ILLINOIS... * AFFECTED AREA...FAR NORTHERN AND NORTHEAST ILLINOIS...INCLUDING MUCH OF CHICAGOLAND AND THE ROCKFORD AREA. * WINDS...WEST 15 TO 20 MPH WITH GUSTS UP TO 30 MPH. * TIMING...FROM LATE THIS MORNING THROUGH LATE THIS AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 20 PERCENT. * IMPACTS...CONDITIONS WILL BECOME FAVORABLE FOR RAPID GROWTH OF WILDFIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ INZ001-002-082330- /O.CON.KLOT.FW.W.0004.120408T1600Z-120409T0000Z/ LAKE IN-PORTER- 1019 AM CDT SUN APR 8 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR FOR LOW RELATIVE HUMIDITY AND STRONG WINDS FOR FAR NORTHWEST INDIANA... * AFFECTED AREA...FAR NORTHWEST INDIANA...INCLUDING THE INDIANA DUNES AREA. * WINDS...NORTHWEST 15 TO 20 MPH WITH GUSTS UP TO 30 MPH. * TIMING...FROM LATE THIS MORNING THROUGH LATE THIS AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 15 TO 20 PERCENT. * IMPACTS...CONDITIONS WILL BECOME FAVORABLE FOR RAPID GROWTH OF WILD FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$
465 WWUS83 KLOT 082142 RFWLOT URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO IL 442 PM CDT SUN APR 8 2012 ILZ003>006-008-010>014-019>023-INZ001-002-010-011-090545- /O.NEW.KLOT.FW.A.0004.120409T1700Z-120410T0000Z/ /O.CON.KLOT.FW.W.0004.000000T0000Z-120409T0000Z/ WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK- LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LAKE IN-PORTER-NEWTON- JASPER- 442 PM CDT SUN APR 8 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...FIRE WEATHER WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A FIRE WEATHER WATCH FOR LOW RELATIVE HUMIDITY AND STRONG WINDS...WHICH IS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING. * AFFECTED AREA...PORTIONS OF NORTH CENTRAL ILLINOIS AND NORTHEAST ILLINOIS ALONG WITH NORTHWEST INDIANA. * WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * TIMING...THROUGH LATE THIS AFTERNOON AND ONCE AGAIN FROM LATE MONDAY MORNING THROUGH LATE MONDAY AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 20 PERCENT. * IMPACTS...CONDITIONS WILL BECOME FAVORABLE FOR RAPID GROWTH OF WILDFIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ ILZ032-033-039-INZ019-090545- /O.NEW.KLOT.FW.A.0004.120409T1700Z-120410T0000Z/ LIVINGSTON-IROQUOIS-FORD-BENTON- 442 PM CDT SUN APR 8 2012 /542 PM EDT SUN APR 8 2012/ ...FIRE WEATHER WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A FIRE WEATHER WATCH FOR LOW RELATIVE HUMIDITY AND STRONG WINDS...WHICH IS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING. * AFFECTED AREA...PORTIONS OF NORTH CENTRAL ILLINOIS AND NORTHEAST ILLINOIS ALONG WITH NORTHWEST INDIANA. * WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * TIMING...FROM LATE MONDAY MORNING THROUGH LATE MONDAY AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 20 PERCENT. * IMPACTS...CONDITIONS MAY BECOME FAVORABLE FOR RAPID GROWTH OF WILD FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ RODRIGUEZ
761 WWUS83 KLOT 090003 RFWLOT URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO IL 703 PM CDT SUN APR 8 2012 ILZ003>006-008-010>014-019>023-INZ001-002-010-011-090815- /O.EXP.KLOT.FW.W.0004.000000T0000Z-120409T0000Z/ /O.CON.KLOT.FW.A.0004.120409T1700Z-120410T0000Z/ WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK- LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LAKE IN-PORTER-NEWTON- JASPER- 703 PM CDT SUN APR 8 2012 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... ...RED FLAG WARNING HAS EXPIRED... * AFFECTED AREA...PORTIONS OF NORTH CENTRAL ILLINOIS AND NORTHEAST ILLINOIS ALONG WITH NORTHWEST INDIANA. * WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * TIMING...FROM LATE MONDAY MORNING THROUGH LATE MONDAY AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 20 PERCENT. * IMPACTS...CONDITIONS WILL BECOME FAVORABLE FOR RAPID GROWTH OF WILDFIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ ILZ032-033-039-INZ019-090815- /O.CON.KLOT.FW.A.0004.120409T1700Z-120410T0000Z/ LIVINGSTON-IROQUOIS-FORD-BENTON- 703 PM CDT SUN APR 8 2012 /803 PM EDT SUN APR 8 2012/ ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING... * AFFECTED AREA...PORTIONS OF NORTH CENTRAL ILLINOIS AND NORTHEAST ILLINOIS ALONG WITH NORTHWEST INDIANA. * WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * TIMING...FROM LATE MONDAY MORNING THROUGH LATE MONDAY AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 20 PERCENT. * IMPACTS...CONDITIONS MAY BECOME FAVORABLE FOR RAPID GROWTH OF WILD FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ RODRIGUEZ
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 4:42 PM CDT | Fire Weather Watch | LOT | Benton, Jasper, Lake, Newton, Porter | 12 hr |
Nearby
Red Flag Warnings in Illinois, 2012Red Flag Warnings in Indiana, 2012Every red flag warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.