Alert archive / Illinois / Flash Flood Warnings in 1990
Flash Flood Warning 3, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Nov 27, 1990, 7:33 PM CST for Cook County, Will County, Illinois. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Nov 27, 1990, 7:33 PM CST (01:33 UTC)
- Expired
- Nov 28, 1990, 3:30 AM CST
- In force
- 8 hr
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
Counties Cook County, IL, Will County, IL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.6 hours before the alert went out and 313 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
- 569 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KCHI 280142
FFWCHI
ILC031-197-280930-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHICAGO IL
733 PM CST TUE NOV 27 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 330 AM CST FOR PEOPLE IN THE FOLLOWING COUNTIES
IN THE NORTHEAST PART OF ILLINOIS
SOUTH COOK AND EAST WILL
AT 7 30 PM SECTIONS OF COOK AND WILL COUNTIES IN SOUTH CHICAGO
SUBURBS HAVE REPORTED MORE THAN 3 INCHES OF RAINFALL SINCE LATE
NIGHT. LOCAL FLOODING HAS ALREADY BEEN REPORTED WITH SOME ROADS AND
STREETS FLOODED.
A FLASH FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.
TO ESCAPE RISING WATER MOVE TO HIGHER GROUND.
HEAVY RAINFALL CONTINUES ACROSS NORTHEAST ILLINOIS INT:O NORTHWEST
INDIANA WILL BEGIN ABATE LATER TONIGHT.
ATTN:ISP DIST 4..5
WILLIAMSWhat forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Nov 27, 3:36 PM CST, 3 hours 57 minutes before
ILZ001-002-272230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCKFORD IL 328 PM CST TUE NOV 22 1990 ...TORNADO WATCH FOR MUCH OF NORTHERN ILLINOIS UNTIL 9 PM... AT 3 25 PM CST...RADAR WAS INDICATING THAT SHOWERS AND THUNDERSTORMS WAS COVERING MUCH OF THE AREA. THE STRONGEST THUNDERSTORMS WERE LOCATED ALONG A LINE FROM JUST SOUTH OF ROCHELLE TO LA SALLE ILLINOIS...OR ABOUT 20 TO 35 MILES SOUTH OF ROCKFORD. THE STORMS WERE MOVING TO THE NORTHEAST AT 35 MPH. SEVERE THUNDERSTORMS AND TORNADOES COULD DEVELOP AT ANY TIME... ESPECIALLY NEAR TO AND EAST OF A LINE FROM ROCKFORD TO DIXON. EVERYONE IN AND CLOSE TO THE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THEATENING WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. ATTN ISP DIST: 1...2...16. SANDERS ...RESEND...NO CHANGES...
Special weather statement, Nov 27, 4:13 PM CST, 3 hours 20 minutes before
ILZALL-280000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 4 10 PM CST TUE NOV 27 1990 AT 4 00 PM CST A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM NEAR AURORA TO ABOUT 10 MILES WEST OF MORRIS TO ABOUT 10 MILES WEST OF PONTIAC. THIS LINE OF THUNDERSTORMS WAS LOCATED ABOUT 40 MILES WEST AND SOUTHWEST OF DOWNTOWN CHICAGO. THIS LINE OF THUNDERSTORMS WAS MOVING EAST AROUND 30 MPH. STRONG AND GUSTY WINDS AND VISIBILITIES BRIEFLY NEAR ZERO IS LIKELY WITH THIS LINE OF THUNDERSTORMS AS IT MOVES THROUGH THE CHICAGO METROPOLITAN AREA BY 6 PM THIS EVENING. MORRISON
Special weather statement, Nov 27, 4:17 PM CST, 3 hours 16 minutes before
ILZ001-002-272330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCKFORD IL 416 PM CST TUE NOV 22 1990 ...TORNADO WATCH CONTINUES FOR MUCH OF NORTHERN ILLINOIS UNTIL 9 PM... AT 4 15 PM CST...RADAR CONTINUES TO INDICATE SHOWERS AND THUNDERSTORMS COVING JUST ABOUT ALL OF NORTHERN ILLINOIS. THE SHOWERS AND THUNDERSORMS CONTINUED TO MOVE TO THE NORTHEAST AT 35 MPH. NO SEVERE WEATHER WAS REPORTED SO FAR AS OF 4 15 PM. CONDITIONS REMAIN FAVORABLE FOR SEVERE WEATHER TO DEVELOP AT ANY TIME HOWEVER...ESPECIALLY NEAR TO AND EAST OF A LINE FROM ROCKFORD TO DIXON. EVERYONE IN AND CLOSE TO THE WATCH AREA THEREFORE...SHOULD BE ON THE LOOKOUT FOR THEATENING WEATHER AND SHOULD LISTEN FOR LATER S!TATEMENTS AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. ATTN ISP DIST: 1...2...16. SANDERS
Special weather statement, Nov 27, 4:44 PM CST, 2 hours 49 minutes before
ILZ001-002-272330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCKFORD IL 444 PM CST TUE NOV 27 1990 ...TORNADO WATCH CONTINUES FOR MUCH OF NORTHERN ILLINOIS UNTIL 9 PM... AT 4 43 PM CST...RADAR CONTINUES TO INDICATE HEAVY RAINSHOWERS AND A FEW THUNDERSTORMS COVERING MOST OF NORTHERN ILLINOIS. THE SHOWERS AND THUNDERSTORMS CONTINUE TO MOVE TO THE NORTHEAST AT 35 MPH. SO FAR... NO SEVERE WEATHER WAS REPORTED AS OF 4 43 PM. CONDITIONS REMAIN FAVORABLE FOR SEVERE WEATHER TO DEVELOP AT ANY TIME HOWEVER...ESPECIALLY NEAR TO AND EAST OF A LINE FROM ROCKFORD TO DIXON. EVERYONE IN AND CLOSE TO THE WATCH AREA THEREFORE...SHOULD BE ON THE LOOKOUT FOR THEATENING WEATHER AND SHOULD LISTEN FOOR LATER STATEMENTS AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. ATTN ISP DIST: 1...2...16. SANDERS
Special weather statement, Nov 27, 5:51 PM CST, 1 hour 42 minutes before
ILZ001-002-280015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCKFORD IL 550 PM CST TUE NOV 27 1990 ...TORNADO WATCH FOR MUCH OF NORTHERN ILLINOIS HAS BEEN CANCELED... AT 5 45 PM CST...RADAR CONTINUES TO SHOW SHOWERS AND THUNDERSTORMS ACROSS OGLE...LEE...BOONE AND DE KALB COUNTIES. THE SHOWERS AND THUNDERSTORMS WILL CONTINUE TO MOVE EASTWARD OUT OF THE AREA DURING THE NEXT SEVEREAL HOURS. NO SEVERE WEATHER HAS BEEN REPORTED DURING THE LAST SEVARL HOURS AND NO FURTHER THREAT OF SEVERE WEATHER CAN BE EXPECTED FOR THE REST OF THE NIGHT. ATTN ISP DIST: 1...2...16. SANDERS
Special weather statement, Nov 27, 6:52 PM CST, 41 minutes before
ILZALL-280000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 6 40 PM CST TUE NOV 27 1990 EFFECTIVE IMMEDIATELY THE CHICAGO AREA PORTION OF THE TORNADO WATCH HAS BEEN CANCELLED. THE THUNDERSTORMS PRODUCING THE REPORTS OF SEVERE WEATHER HAVE MOVED EAST AND WEAKENED...AND NO SEVERE WEATHER IS ANTICIPATED FOR THE METRO AREA. HOWEVER THE WATCH DOES CONTINUE FOR PORTIONS OF EAST CENTRAL AND SOUTHERN ILLINOIS. PURPURA
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 28, 12:00 AM CST | Flash Flood Warning | LOT | Cook, DuPage, Will | 6 hr |
Nearby
Flash Flood Warnings in Illinois, 1990Every flash flood warning in 1990
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.