Alert archive / Illinois / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 18, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at May 12, 1990, 7:56 PM CDT for Clark County, Coles County, Cumberland County, Illinois. It was in force for 34 min. 1 report 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
- May 12, 1990, 7:56 PM CDT (00:56 UTC)
- Expired
- May 12, 1990, 8:30 PM CDT
- In force
- 34 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Clark County, IL, Coles County, IL, Cumberland 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 |
|---|---|---|---|
| May 12, 8:05 PM CDT | Thunderstorm Wind 72 | Cumberland, 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
Paducah/Barkley, KY (KPAH), launched 00:00Z, 0.9 hours before the alert went out and 262 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
- 240 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 642 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 292 m²/s²
- 0-3 km storm-relative helicity
- 395 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
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 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, May 12, 7:29 PM CDT, 27 minutes before
ILZ009-010-130022- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 725 PM CDT SAT MAY 12 1989 ...SEVERE THUNDERSTORM WATCH 222 CANCELLED FOR CHRISTIAN...MACOUPIN ....SHELBY AND MONTGOMERY COUNTIES... AT 725 PM CDT THE LINE OF SEVERE THUNDERSTORMS THAT WAS IN CENTRAL ILLINOIS HAS WEAKENED AND MOVED INTO EASTCENTRAL ILLINOIS. THEREFORE ...THE PORTION OF THE WATCH EFFECTING CHRISTION...MACOUPIN...SHELBY AND MONTGOMERY COUNTIES HAS BEEN CANCELLED. THE WATCH REMAINS IN EFFECT FOR OTHER COUNTIES IN EASTCENTRAL ILLINOIS. THE WATCH IS IN EFFECT FOR MOULTRIE... COLES...CUMBERLAND AND CLARK COUNTIES AND OTHER COUNTIES TO THE SOUTH. PERSONS IN THOSE COUNTIES SHOULD REMAIN ON THE AkLERT. FS
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 7:56 PM CDT | Severe Thunderstorm Warning | ILX | Edgar | 34 min |
| May 12, 8:19 PM CDT | Tornado Warning | ILX | Clark, Cumberland | 41 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.