Alert archive / Illinois / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 99, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Dec 8, 1991, 2:36 PM CST for Logan County, Illinois. It was in force for 39 min.
The area
The counties it named.
The facts
- Issued
- Dec 8, 1991, 2:36 PM CST (20:36 UTC)
- Expired
- Dec 8, 1991, 3:15 PM CST
- In force
- 39 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County Logan County, IL
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 8.6 hours before the alert went out and 345 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
- 0 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 294 m²/s²
- 0-3 km storm-relative helicity
- 278 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 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, Dec 8, 1:53 PM CST, 43 minutes before
ILZ010-082100- SHORT RANGE FORECAST FOR CENTRAL AND EASTCENTRAL ILLINOIS NATIONAL WEATHER SERVICE SPRINGFIELD IL 1 52 PM CST SUN DEC 8 1991 ...SEVERE THUNDERSTORM WATCH FOR CENTRAL ILLINOIS UNTIL 6 00 PM CST... AT 1 45 PM...A LINE OF STRONG THUNDERSTORMS WAS OVER NORTH CENTRAL AND WEST CENTRAL ILLINOIS FROM PEORIA TO 35 MILES NORTHWEST OF SPRINGFIELD NEAR HAVANA TO 20 MILES SOUTHEAST OF QUINCY. THE LINE OF STORMS WAS MOVING TO THE EAST SOUTHEAST AT 30 MPH AND WILL BE FROM BETWEEN PEORIA AND BLOOMINGTON TO THE WEST EDGE OF SPRINGFIELD TO NORTHWEST OF ST. LOUIS BY AROUND 3 PM. THESE THUNDERSTORMS MAY PRODUCE BRIEF DAMAGING WINDS...HAIL...DEADLY LIGHTNING AND A BRIEF HEAVY DOWNPOUR OF RAIN. YOU SHOULD TAKE SHELTER IN A SUBSTANTIAL BUILDING AS THESE STORMS APPROACH. DO NOT USE THE TELEPHONE OR ELECTRICAL APPLIANCES WHEN LIGHTNING IS NEAR. WAIT A FEW MINUTES UNTIL THE STORMS HAVE PASSED. PALMER
Special weather statement, Dec 8, 1:54 PM CST, 42 minutes before
ILZ010-082100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 1 52 PM CST SUN DEC 8 1991 ...SEVERE THUNDERSTORM WATCH FOR CENTRAL ILLINOIS UNTIL 6 00 PM CST... AT 1 45 PM...A LINE OF STRONG THUNDERSTORMS WAS OVER NORTH CENTRAL AND WEST CENTRAL ILLINOIS FROM PEORIA TO 35 MILES NORTHWEST OF SPRINGFIELD NEAR HAVANA TO 20 MILES SOUTHEAST OF QUINCY. THE LINE OF STORMS WAS MOVING TO THE EAST SOUTHEAST AT 30 MPH AND WILL BE FROM BETWEEN PEORIA AND BLOOMINGTON TO THE WEST EDGE OF SPRINGFIELD TO NORTHWEST OF ST. LOUIS BY AROUND 3 PM. THESE THUNDERSTORMS MAY PRODUCE BRIEF DAMAGING WINDS...HAIL...DEADLY LIGHTNING AND A BRIEF HEAVY DOWNPOUR OF RAIN. YOU SHOULD TAKE SHELTER IN A SUBSTANTIAL BUILDING AS THESE STORMS APPROACH. DO NOT USE THE TELEPHONE OR ELECTRICAL APPLIANCES WHEN LIGHTNING IS NEAR. WAIT A FEW MINUTES UNTIL THE STORMS HAVE PASSED. PALMER
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 8, 1:48 PM CST | Severe Thunderstorm Warning | ILX | Fulton, Mason | 42 min |
| Dec 8, 2:14 PM CST | Severe Thunderstorm Warning | ILX | Cass, Menard | 46 min |
| Dec 8, 2:20 PM CST | Severe Thunderstorm Warning | ILX | McLean, Tazewell, Woodford | 40 min |
| Dec 8, 3:23 PM CST | Severe Thunderstorm Warning | ILX | DeWitt, Logan, Macon | 67 min |
| Dec 8, 3:23 PM CST | Tornado Warning | ILX | McLean | 37 min |
| Dec 8, 4:38 PM CST | Tornado Warning | ILX | Champaign, Piatt | 27 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1991Every severe thunderstorm warning in 1991
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.