Alert archive / Illinois / Flash Flood Warnings in 1990
Flash Flood Warning 4, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Nov 28, 1990, 12:00 AM CST for Cook County, DuPage County, Will County, Illinois. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Nov 28, 1990, 12:00 AM CST (06:00 UTC)
- Expired
- Nov 28, 1990, 6:00 AM CST
- In force
- 6 hr
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
Counties Cook County, IL, DuPage 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, 6.0 hours before the alert went out and 306 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
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What 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, 6:52 PM CST, 5 hours 8 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
Local storm report, Nov 27, 9:35 PM CST, 2 hours 25 minutes before
STORM REPORT ...REFERENCE WT 775...
NATIONAL WEATHER SERVICE CHICAGO IL
9 35 PM CST TUE NOV 27 1990
COUNTY TIME (CST) EVENT
LASALLE CO 1606CST LASALLE ESDA REPORTED DAMAGE TO A HOME AND
TSTM WIND OUTBUILDINGS AT LAKE HOLIDAY...NE LASALLE CO.
DU PAGE CO. 1610CST DUPAGE AIRPORT (OMNI WX) REPORTED WIND GUSTS
TSTM WIND TO 55 MPH.
KANE CO. 1613CST UNCONFIRMED TORNADOS AT GENEVA AND BATAVIA.
DU PAGE CO. 1618CST AN INJURY TO A WOMAN WHEN DEBRIS FROM A ROOF
TSTM WIND BROKE THE WINDSHIELD OF HER CAR. SHE SUFFERED
LACERATIONS TO HER FACE AND HEAD. OTHER CARS
WERE TURNED OVER AND ROOFS DAMAGED.
WILL CO. 1636CST OHARE TOWER REPORTED A GUST TO 44 KNOTS.
SIMPSONSpecial weather statement, Nov 27, 11:16 PM CST, 44 minutes before
ILZ003-005-008-281000- OVERNIGHT/S WEATHER FOR THE CHICAGO AREA AND NORTHEAST ILLINOIS NATIONAL WEATHER SERVICE CHICAGO IL 11 25 PM CST TUE NOV 27 1990 ...FLASH FLOOD WARNING TONIGHT FOR SOUTH COOK AND EAST WILL COUNTIES AND LAKE AND PORTER COUNTIES IN NORTHWEST INDIANA... HEAVY RAINFALL...WHICH HAS BEEN PRODUCING FLOODING OVER THE SOUTHEAST SECTIONS OF METROPOLITAN CHICAGO...IS DIMINISHING FROM THE WEST AND SHOULD BECOME OCCASIONAL LIGHT RAIN AOND DRIZZLE SOON AFTER MIDNIGHT. WINDY AND MUCH COOLER CONDITIONS ARE ON TAP OVERNIGHT WITH WEST WINDS 20 TO 40 MPH BECOMING NORTHWESTERLY AND TEMPERATURES DROPPING INTO THE 30S. WILLIAMS
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 27, 7:33 PM CST | Flash Flood Warning | LOT | Cook, Will | 8 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.