Alert archive / Illinois / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 26, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Apr 29, 1991, 7:40 PM CDT for Christian County, Macon County, Illinois. It was in force for 65 min.
The area
The counties it named.
The facts
- Issued
- Apr 29, 1991, 7:40 PM CDT (00:40 UTC)
- Expired
- Apr 29, 1991, 8:45 PM CDT
- In force
- 65 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Christian County, IL, Macon County, IL
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 00:00Z, 0.7 hours before the alert went out and 295 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
- 7 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 847 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 176 m²/s²
- 0-3 km storm-relative helicity
- 135 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, Apr 29, 7:13 PM CDT, 27 minutes before
ILZ009-010-300115- SHORT TERM WEATHER FOR CENTRAL AND EASTCENTRAL ILLINOIS NATIONAL WEATHER SERVICE SPRINGFIELD IL 705 PM CDT MON APR 29 1991 A LINE OF STRONG THUNDERSTORMS HAVE DEVELOPED OVER CENTRAL ILLINOIS. THE LINE EXTENDED FROM JUST EAST OF SPRINGFIELD NORTH TO 30 MILES NORTHEAST OF PEORIA. THE STORMS WERE MOVING TO THE NORTH AT 30 MPH WHILE THE LINE WAS MOVING TO THE EAST AT 30 MPH. THE STRONGEST STORMS WERE LOCATED IN LOGAN COUNTY JUST EAST OF LINCOLN AND 10 MILES NORTHWEST AND 10 MILES SOUTHWEST OF MT PULASKI. THE STORMS WILL MOVE INTO DEWITT AND NORTHERN MACON COUNTIES BY 730 PM. DAMAGING WINDS...HAIL...VERY HEAVY RAIN AND DANGEROUS LIGHTNING MAY ACCOMPANY THESE STORMS. B E ALERT TO THE RAPIDLY CHANGING WEATHER CONDITIONS AND LISTEN FOR FURTHER UPDATES OR POSSIBLE WARNINGS. MUNDY ATTN ISP DIST...9...6...10
Special weather statement, Apr 29, 7:14 PM CDT, 26 minutes before
ILZ009-010-300115- SPECIAL WEATHER STATEMENT...CORRECTION... NATIONAL WEATHER SERVICE SPRINGFIELD IL 710 PM CDT MON APR 29 1991 A LINE OF STRONG THUNDERSTORMS HAVE DEVELOPED OVER CENTRAL ILLINOIS. THE LINE EXTENDED FROM JUST EAST OF SPRINGFIELD NORTH TO 30 MILES NORTHEAST OF PEORIA. THE STORMS WERE MOVING TO THE NORTH AT 30 MPH WHILE THE LINE WAS MOVING TO THE EAST AT 30 MPH. THE STRONGEST STORMS WERE LOCATED IN LOGAN COUNTY JUST EAST OF LINCOLN AND 10 MILES NORTHWEST AND 10 MILES SOUTHWEST OF MT PULASKI. THE STORMS WILL MOVE INTO DEWITT AND NORTHERN MACON COUNTIES BY 730 PM. DAMAGING WINDS...HAIL...VERY HEAVY RAIN AND DANGEROUS LIGHTNING MAY ACCOMPANY THESE STORMS. BE ALERT TO THE RAPIDLY CHANGING WEATHER CONDITIONS AND LISTEN FOR FURTHER UPDATES OR POSSIBLE WARNINGS. MUNDY ATTN ISP DIST...9...6...10
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 7:04 PM CDT | Tornado Warning | ILX | McLean, Woodford | 26 min |
| Apr 29, 7:33 PM CDT | Tornado Warning | ILX | McLean, Woodford | 27 min |
| Apr 29, 7:40 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt | 65 min |
| Apr 29, 7:41 PM CDT | Tornado Warning | ILX | DeKalb, Lee | 34 min |
| Apr 29, 7:58 PM CDT | Tornado Warning | ILX | Boone | 32 min |
| Apr 29, 8:02 PM CDT | Tornado Warning | ILX | McLean | 58 min |
| Apr 29, 8:31 PM CDT | Tornado Warning | ILX | DeWitt, Piatt | 44 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.