Alert archive / Illinois / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 39, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jun 17, 1990, 3:53 AM CDT for Lee County, Ogle County, Illinois. It was in force for 52 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 17, 1990, 3:53 AM CDT (08:53 UTC)
- Expired
- Jun 17, 1990, 4:45 AM CDT
- In force
- 52 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Lee County, IL, Ogle County, IL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 17, 4:23 AM CDT | Thunderstorm Wind 0 | Ogle, IL | |
| Jun 17, 4:31 AM CDT | Thunderstorm Wind 0 | Lee, IL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 8.9 hours before the alert went out and 304 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
- 62 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 875 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 258 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KRFD 170852 RRA
SVRRFD
ILC103-141-171000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCKFORD IL
353 AM CDT SUN JUN 17 1990
THE NATIONAL WEATHER SERVICE IN ROCKFORD HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTH CENTRAL ILLINOIS
...LEE...OGLE
AT 350 AM CDT LINE OF THUNDERSTORMS WAS SITUATED FROM WESTERN OGLE
COUNTY...THROUGH WESTERN LEE COUNTY. THESE THUNDERSTORMS WERE MOVING
TO THE EAST AT 40 MPH. COUTNY SHERIFF IN OGLE REPORTED DAMAGE TO
HOUSES IN POLO...35 MILES SW OF ROCKFORD.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH..
LARGE DESTRUCTIVE HAIL.. KDEADLY LIGHTNING AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS AND LOW LYING AREAS
QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 4:31 AM CDT | Severe Thunderstorm Warning | ILX | DeKalb | 29 min |
| Jun 17, 5:12 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt | 63 min |
| Jun 17, 6:07 PM CDT | Tornado Warning | ILX | DeWitt, Piatt | 38 min |
| Jun 17, 6:13 PM CDT | Severe Thunderstorm Warning | ILX | Macon | 62 min |
| Jun 17, 6:13 PM CDT | Severe Thunderstorm Warning | ILX | Macoupin, Montgomery | 62 min |
| Jun 17, 6:21 PM CDT | Severe Thunderstorm Warning | ILX | Christian | 69 min |
| Jun 17, 6:47 PM CDT | Tornado Warning | ILX | Champaign, Piatt | 58 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.