Alert archive / Illinois / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 13, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at Jun 22, 1990, 6:36 PM CDT for Ford County, Illinois. It was in force for 39 min.
The area
The counties it named.
The facts
- Issued
- Jun 22, 1990, 6:36 PM CDT (23:36 UTC)
- Expired
- Jun 22, 1990, 7:15 PM CDT
- In force
- 39 min
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
County Ford 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
Dayton/James M C, OH (KDAY), launched 12:00Z, 11.6 hours before the alert went out and 350 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
- 8 J/kg
- Mixed-layer CIN
- -322 J/kg
- Mixed-layer LCL
- 1723 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 80 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 222336
SVRCHI
ILC053-075-230045-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHICAGO IL
636 PM CDT FRI JUN 22 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 745 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE EAST CENTRAL PART OF ILLINOIS
NORTHERN FORD...IROQUOIS
AT 6 30 PM CDT STATE POLICE REPORTED WIND DAMAGE FROM A SEVERE
THUNDERSTORM 3 MILES EAST OF CHEBANSE ILLINOIS IN NORTH IROQUOIS
COUNTY... ABOUT 10 SOUTHWEST OF KANKAKEE.
THE STORM WAS MOVING TO THE SOUTHEAST AT 30 MPH. TOWNS IN THE
PATH OF THIS STORM INCLUDE PIPER CITY... GILMAN... WATSEKA...
ONARGA AND WELLINGTON.
IF YOU ARE IN AN AREA THREATENED BY THIS STORM...GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL..VERY HEAVY RAIN
AND LIGHTNING.
KAHN
ATTN ISP 21What forecasters said that day
The local office's own words before this severe thunderstorm 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, Jun 22, 12:57 PM CDT, 5 hours 39 minutes before
ILZ003-221900- SPECIAL WEATHER AND MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 1 00 PM CDT FRI JUN 22 1990 AT 1255 PM CDT HEAVY SHOWERS AND A FEW THUNDERSTORMS WERE PUSHING THROUGH THE GREATER CHICAGO METRO AREA. THE HEVIEST SHOWERS AND THUNDERSTORMS WERE LOCATED ALONG A NARROW BAND THAT STRECTHCED FROM NEAR OHARE INTERNATIONAL SOUTHWARD THROUGH CHICAGO TO EAST OF KANKAKEE. BRIEF HEAVY RAIN AND GUSTY WINDS ARE LIKELY WITH THIS 4LINE AS WELL AS THE POSSIBILITY OF HAIL BETWEEN 1 00 PM CDT AND 1 30 PM CDT THIS AFTERNOON. THE THUNDERSTORMS WILL BE MOVING OUT OVER LAKE MICHIGAN DURING THE BY 2 00 PM CDT AND BOATERS SHOULD MOVE TO SAFE HARBOR. LEBDA
Special weather statement, Jun 22, 1:39 PM CDT, 4 hours 57 minutes before
ILZ003-221900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 1 40 PM CDT FRI JUN 22 1990 A TORNADO WATCH REMAINS IN EFFECT FOR THE CHICAGO AREA UNTIL 7PM THIS EVENING. AT 1 40 PM CDT SHOWERS AND THUNDERSTORMS WERE LOCATED IN A LINE FROM THE ILLINOIS WISCONSIN BORDER AT LAKE MICHGAN...ABOUT 45 MILES MORTH OF DOWNTOWN CHICAGO...TO SOUTH OF VALPARAISO INDIANA...ABOUT 50 MILES SOUTHEAST OF CHICAGO. ALL THESE STORMS WERE EAST OF THEu CHICAGO AREA AND NO LONGER POSE A THREAT TO THE AREA. SOMREK
Special weather statement, Jun 22, 2:24 PM CDT, 4 hours 12 minutes before
ILZ003-222100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 2 20 PM CDT FRI JUN 22 1990 A TORNADO WATCH REMAINS IN EFFECT FOR THE CHICAGO AREA UNTIL 7PM CDT. AT 2 15 PM CDT SATELLITE AND RADAR SHOWERD NUMEROUS SHOWERS AND THUNDERSTORMS FROM MINNESOTA ACROSS ILLINOIS TO INDIANA...THEY WERE GENERALLY MOVING EAST ABOUT 30 MPH. LOW PRESSURE CENTERED OVER SOUTH LAKE MICHIGAN WAS THE CAUSE OF THIS WEATHER. THE COMBINATION OF WARM MOIST AIR AT GROUND LEVEL AND COOLER FAST FLOWING AIR ALOFT MAKES UNSTABLE CONDITIONS THAT ARE RIPE FOR THUNDERSTORMS. IT IS POSSIBLE THESE THUNDERSTORMS MAY PRODUCE TORNADOS. IT IS LIKELY THEY WILL PRODUCE DANGEROUS LIGHTNING...GUSTY WINDS AND SMALL HAIL. SIMPSON
Special weather statement, Jun 22, 3:59 PM CDT, 2 hours 37 minutes before
ILZ003-008-010-222300- SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 4 00 PM CDT FRI JUN 22 1990 THE TORNADO WATCH HAS BEEN CANCELLED FOR ALL OF ILLINOIS THE REMAINDER OF THIS AFTERNOON. WHILE SHOWERS AND THUNDERSTORMS WILL LINGER INTO EARLY TONIGHT... IT APPEARS THAT THESE STORMS NO LONGER HAVE THE POTENTIAL FOR SEVERE WEATHER. HOWEVER...SOME LOCALLY HEAVY RAIN AND GUSTY WINDS ARE STILL POSSIBLE EARLY THIS EVENING WITH A FEW THUNDERSTORMS. PURPURA
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 6:36 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 69 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1990Every severe thunderstorm 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.