Alert archive / Illinois / Tornado Warnings in 1991
Tornado Warning 26, NWS Lincoln, IL
NWS Lincoln, IL issued this tornado warning at May 31, 1991, 7:44 PM CDT for McLean County, Illinois. It was in force for 31 min.
The area
The counties it named.
The facts
- Issued
- May 31, 1991, 7:44 PM CDT (00:44 UTC)
- Expired
- May 31, 1991, 8:15 PM CDT
- In force
- 31 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County McLean County, IL
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 00:00Z, 0.7 hours before the alert went out and 381 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
- 1539 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 1196 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 27 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 KPIA 010044
TORPIA
ILC113-010115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PEORIA IL
744 PM CDT FRI MAY 31 1991
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE CENTRAL PART OF ILLINOIS
MCLEAN
AT 742 PM...A TORNADO WAS REPORTED ON THE GROUND NEAR MINIER
25 MILES SOUTHEAST OF PEORIA. THE TORNADO WAS MOVING SOUTHEAST
AROUND 30 MPH.
TOWNS IN THE PATH OF THIS STORM INCLUDE STANFORD...COVELL...AND
BLOOMINGTON/NORMAL.
IF YOU ARE IN THE PATH OF THIS TORNADO...GO TO A BASEMENT SHELTER
IF AVAILABLE...OTHERWISE TO A CENTRAL INTERIOR ROOM ON THE LOWEST
FLOOR. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING.
ATTN ISP DIST...6
MILLERWhat forecasters said that day
The local office's own words before this tornado 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 31, 2:36 PM CDT, 5 hours 8 minutes before
ILZ005-312030-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
235 PM CDT FRI MAY 31 1991
...STRONG THUNDERTORMS APPROACHING NORTHWEST ILLINOIS...
AT 230 PM...RADAR INDICATED NO THUNDERSTORMS IN BUREAU COUNTY. HOWEVER...
STRONG THUNDERSTORMS WERE MOVING TOWARD NORTHWEST PARTS OF THE STATE
ABOUT 25 MILES WEST OF THE QUAD CITIES. THE STORMS WERE MOVING EAST
AROUND 30 MPH. THESE STORMS WILL APPROACH WESTERN PARTS OF BUREAU COUNTY
AROUND 430 PM...IF THEY KEEP MOVING AT THE SAME SPEED AND INTENSITY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHWEST AND NORTHERN
ILLINOIS...INCLUDING BUREAU COUNTY...UNTIL 500 PM CDT. HAIL...DAMAGING
WINDS AND DEADLY LIGHTNING ARE POSSIBLE WITH THE THUNDERSTORMS IN THIS
AREA. A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR THESE AREAS THIS AFTERNOON
AND TONIGHT FOR THE POSSIBILITY OF FLASH FLOOD PRODUCING HEAVY RAIN IN
ALREADY SATURATED LOCATIONS.
MILLERSpecial weather statement, May 31, 3:40 PM CDT, 4 hours 4 minutes before
ILZ005-312135- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 335 PM CDT FRI MAY 31 1991 ...STRONG THUNDERTORMS IN NORTHWEST ILLINOIS... AT 330 PM...RADAR INDICATED A LINE OF THUNDERSTORMS THAT HAS DEVELOPED FROM 45 MILES NORTHEAST TO 20 MILES SOUTH OF MOLINE. THIS LINE WAS JUST ENTERING EXTREME NORTHWEST BUREAU COUNTY. OTHER STRONG THUNDERSTORMS EXTENDED FROM NEAR MOLINE TO ROCKFORD. THE STORMS WERE MOVING EAST ABOUT 35 MPH. THE FIRST LINE OF THUNDERSTORMS IS EXPECTED TO MOVE ACROSS NORTHERN BUREAU COUNTY DURING THE NEXT HOUR. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHWEST AND NORTHERN ILLINOIS...INCLUDING BUREAU COUNTY...UNTIL 500 PM CDT. HAIL...DAMAGING WINDS AND DEADLY LIGHTNING ARE POSSIBLE WITH THE THUNDERSTORMS IN THIS AREA. A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR THESE AREAS THIS AFTERNOON AND TONIGHT FOR THE POSSIBILITY OF FLASH FLOOD PRODUCING HEAVY RAIN IN ALREADY SATURATED LOCATIONS. B MILLER
Special weather statement, May 31, 6:12 PM CDT, 1 hour 32 minutes before
ILZ005-006-007-010015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 610 PM CDT FRI MAY 31 1991 ...STRONG THUNDERSTORMS IN WEST CENTRAL ILLINOIS... AT 605 PM...RADAR INDICATED SCATTERED SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...IN WESTERN ILLINOIS. THE STRONGEST STORMS WERE 10 MILES NORTH OF GALESBURG...NEAR MONMOUTH...AND 15 MILES NORTHWEST OF MACOMB. HEAVY RAIN...WIND GUSTS TO 30 MPH AND MARBLE SIZED HAIL HAVE BEEN REPORTED WITH THESE STORMS. THE STORMS WERE MOVING EAST AROUND 35 MPH AND ARE EXPECTED TO EXTEND FROM NEAR BRADFORD TO 20 MILES WEST OF PEORIA TO NEAR CANTON BY 700 PM. THE VERY HEAVY RAIN ASSOCIATED WITH THESE STORMS...ALONG WITH THE FACT THAT THEY COULD MOVE OVER THE SAME AREAS REPEATEDLY...MAY CAUSE SOME FLOODING IN PARTS OF WEST CENTRAL ILLINOIS THIS EVENING AND TONIGHT. DO NOT ATTEMPT TO CROSS A FLOODED ROADWAY IN YOUR VEHICLE OR BY FOOT. ANOTHER AREA OF SHOWERS AND THUNDERSTORMS HAS RECENTLY DEVELOPED IN PARTS OF NORTHEAST WOODFORD COUNTY NEAR MINONK...35 MILES NORTHEAST OF PEORIA. THESE STORMS WERE MOVING EAST AROUND 35 MPH AND ARE ALSO CAPABLE OF PRODUCING HEAVY RAIN...HAIL AND DEADLY LIGHTNING. THESE STORMS ARE EXPECTED TO MOVE INTO LIVINGSTON COUNTY BY 700 PM. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF WEST CENTRAL ILLINOIS UNTIL 1000 PM. IN ADDITION...A FLASH FLOOD WATCH IS IN EFFECT FOR BUREAU AND PUTNAM COUNTIES THIS EVENING AND TONIGHT. q MILLER
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 7:54 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Menard | 66 min |
| May 31, 7:54 PM CDT | Severe Thunderstorm Warning | ILX | Logan | 66 min |
Nearby
Tornado Warnings in Illinois, 1991Every tornado warning in 1991Tornadoes 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.