Alert archive / Illinois / Tornado Warnings in 1991

Tornado Warning 22, NWS Lincoln, IL

May 17, 1991Fulton County, Knox County, Peoria County, Illinois

NWS Lincoln, IL issued this tornado warning at May 17, 1991, 8:11 PM CDT for Fulton County, Knox County, Peoria County, Illinois. It was in force for 64 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
May 17, 1991, 8:11 PM CDT (01:11 UTC)
Expired
May 17, 1991, 9:15 PM CDT
In force
64 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Fulton County, IL, Knox County, IL, Peoria County, IL

What was reported inside it

TimeReportWhereRemark
May 17, 8:20 PM CDTThunderstorm Wind 0Fulton, IL
May 17, 8:30 PM CDTThunderstorm Wind 0Peoria, 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, 1.2 hours before the alert went out and 424 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.

Skew-T log-pSkew-T log-p diagram, Paducah/Barkley, KY at 00:00Z on 1991-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1491 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Paducah/Barkley, KY at 00:00Z on 1991-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 145 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1491 J/kg
Mixed-layer CIN
-208 J/kg
Mixed-layer LCL
1263 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
145 m²/s²
0-3 km storm-relative helicity
192 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KPIA 180111
TORPIA
ILC095-057-143-180215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE PEORIA IL
811 PM CDT FRI MAY 17 1991

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE WEST CENTRAL PART OF ILLINOIS
      KNOX...NORTHWEST FULTON...

   IN THE CENTRAL PART OF ILLINOIS
      WESTERN PEORIA...

AT 8:07 PM CST... A TORNADO WAS REPORTED AT BUSHNELL IN NORTHEAST
MCDONOUGH COUNTY MOVING EAST AT 25 MPH.

TOWNS IN THE PATH INCLUDE MANLEY... CANTON... FARMINGTON AND
YATES CITY.

THE TORNADO WAS REPORTED 45 MILES WEST OF THE CITY OF PEORIA.

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.

IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN AND LIGHTNING.

 MCDONOUGH COUNTY IS UNDER A SEVERE THUNDERSTORM WARNING UNTIL
 8:45 PM AND MCLEAN COUNTY IS UNDE5 A SEVERE THUNDERSTORM WARNING
 UNTIL 8:30 PM.  PUTNAM COUNTY? IS ALSO UNDER A SEVERE THUNDERSTORM
 WARNING UNTIL 8:30 PM.

ATTN ISP 7...14...8

JACOBS

What 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 17, 4:03 PM CDT, 4 hours 8 minutes before
ILZ009-010-172200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
4 00 PM CDT FRI MAY 17 1991

...TORNADO WATCH UNTIL 9 PM CDT FOR PORTIONS OF CENTRAL AND EASTERN
   ILLINOIS...

AT 355 PM CDT WEATHER RADARS INDICATES SHOWERS AND THUNDERSTORMS
CONTINUE TO DEVELOP IN CHAMPAIGN AND VERMILION COUNTIES IN EAST
CENTRAL ILLINOIS. THE STORM WAS MOVING EAST NORTHEAST AT 25 MPH.

OTHER SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP OVER WEST CENTRAL
AND NORTHWEST ILLINOIS.
NO SEVERE WEATHER HAS BEEN REPORTED TO THE NATIONAL WEATHER SERVICE
IN SPRINGFIELD DURING THE PAST HOUR.
HILLIARD
Special weather statement, May 17, 4:20 PM CDT, 3 hours 51 minutes before
ILZ005>007-009-172215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
415 PM CDT FRI MAY 17 1991

...TORNADO WATCH IN EFFECT FOR MUCH OF WEST CENTRAL ILLINOIS TILL 9 PM CDT...

AT 410 PM...RADAR INDICATED A STRONG THUNDERSTORM IN NORTHERN WARREN COUNTY
ABOUT 5 MILES NORTH OF MONMOUTH. THIS STORM WAS MOVING NORTHEAST AT 30 MPH
AND WILL MOVE OUT OF WARREN AND AFFECT THE NORTHWESTERN PORTIONS OF KNOX
COUNTY. TOWNS IN THE VICINITY OF THIS STORM ARE RIO AND ONTARIO.

TORNADOES...LARGE HAIL AND HEAVY RAINS ARE POSSIBLE WITH THIS STORM.

MOGGED
Special weather statement, May 17, 4:57 PM CDT, 3 hours 14 minutes before
ILZ009-010-172300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
4 55 PM CDT FRI MAY 17 1991

...TORNADO WATCH UNTIL 9 PM CDT FOR PORTIONS OF CENTRAL AND EASTERN
   ILLINOIS...

AT 455 PM CDT WEATHER RADAR INDICATED SHOWERS AND THUNDERSTORMS OVER
CENTRAL VERMILION COUNTY.  THUNDERSTORMS CONTINUED TO DEVELOP WEST OF
DANVILLE...NEAR OAKWOOD AND MOVE EAST NORTHEAST AT 25 MPH TOWARD DANVILLE.

AT 450 PM...DANVILLE FIRE DEPARTMENT REPORTED HEAVY RAINS AND STREET
FLOODING.  HEAVY RAINS WILL CONTINUE OVER CENTRAL VERMILION COUNTY
THROUGH 6 PM AS THESE STORMS CONTINUE TO DEVELOP.

OTHERWISE...NO THUNDERSTORMS OR SEVERE WEATHER HAVE BEEN OBSERVED OVER
CENTRAL OR EAST CENTRAL ILLINOIS SINCE 4 PM.

DB
Special weather statement, May 17, 5:19 PM CDT, 2 hours 52 minutes before
ILZ005>007-009-172315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
515 PM CDT FRI MAY 17 1991

...TORNADO WATCH IN EFFECT FOR MUCH OF WEST CENTRAL ILLINOIS TILL 9 PM CDT...

AT 510 PM...RADAR INDICATED A STRONG THUNDERSTORM IN SOUTHERN HENRY COUNTY
NEAR THE TOWN OF ALPHA. THIS STORM IS MOVING EAST NORTHEAST AT AROUND
30 MPH. THIS WILL AFFECT THE NORTHWEST PORTIONS OF BUREAU COUNTY BY 6 PM. TOWNS
THAT WILL BE AFFECTED BY THIS STORM ARE THOMAS...NEW BEDFORD AND MANLIUS.

ANOTHER STORM LOCATED 30 MILES SOUTHWEST OF BURLINGTON WILL CROSS THE
MISSISSIPPI RIVER AROUND 6 PM AFFECTING NORTHERN HENDERSON AND WARREN
COUNTIES.

THESE ARE STRONG STORMS WITH HEAVY RAIN FALL...LARGE HADIL AND POSSIBLE
TORNADOES.

MOGGED
Special weather statement, May 17, 6:05 PM CDT, 2 hours 6 minutes before
ILZ009-010-180000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
6 00 PM CDT FRI MAY 17 1991

...TORNADO WATCH UNTIL 9 PM CDT FOR PORTIONS OF CENTRAL AND EASTERN
   ILLINOIS...

AT 600 PM CDT WEATHER RADAR INDICATED SHOWERS AND THUNDERSTORMS
EXTENDING FROM NORTHEASTERN DOUGLAS COUNTY NEAR NEWMAN...EASTWARD ALONG
THE VERMILION...EDGAR COUNTY LINES.  THE CELLS CONTINUED TO DEVELOP IN
THESE AREAS AND MOVE EASTWARD AT 25 MPH.

THUNDERSTORMS WERE ALSO OVER NORTHWESTERN AND SOUTHWESTERN ILLINOIS.
OTHERWISE...NO THUNDERSTORMS WERE OVER CENTRAL OR EAST CENTRAL ILLINOIS.

TEMPERATURES WILL REMAIN IN THE 80S THIS EVENING...WINDS WILL BE SOUTH
10 TO 20 MPH EXCEPT OVER PORTIONS OuF EAST CENTRAL ILLINOIS...THEY WILL
BE EAST TO NORTHEAST 10 TO 20 MPH...AND TEMPERATURES WILL BE IN THE 70S.
DB
Special weather statement, May 17, 8:01 PM CDT, 10 minutes before
ILZ009-010-180200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
8 00 PM CDT FRI MAY 17 1991

...TORNADO WATCH UNTIL 9 PM CDT FOR PORTIONS OF EAST CENTRAL ILLINOIS...
...TORNADO WATCH UNTIL MIDNIGHT FOR MOST OF CENTRAL ILLINOIS...

AT 800 PM CDT NO PRECIPITATION WAS FALLING ACROSS CENTRAL OR EAST
CENTRAL ILLINOIS.

THUNDERSTORMS HAVE BEEN MOVING ACROSS WEST CENTRAL AND NORTHWESTERN
ILLINOIS.  IT IS EXPECTED THESE STORMS WILL 3MOVE OVER PORTIONS OF
CENTRAL ILLINOIS BY MIDNIGHT.

DB

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 17, 7:26 PM CDTSevere Thunderstorm WarningILXPutnam64 min
May 17, 7:38 PM CDTSevere Thunderstorm WarningILXMcDonough, Warren67 min
May 17, 7:56 PM CDTSevere Thunderstorm WarningILXMcLean34 min
May 17, 8:50 PM CDTTornado WarningILXFulton, Peoria55 min
May 17, 9:24 PM CDTSevere Thunderstorm WarningILXMcLean, Mason, Tazewell, Woodford66 min
May 17, 9:28 PM CDTSevere Thunderstorm WarningILXCass, Menard47 min
May 17, 9:56 PM CDTSevere Thunderstorm WarningILXLogan, Sangamon49 min
May 17, 10:41 PM CDTSevere Thunderstorm WarningILXDeWitt, Macon, Piatt49 min
May 17, 10:48 PM CDTTornado WarningILXMacon42 min
May 17, 11:09 PM CDTTornado WarningILXMason66 min
May 17, 11:11 PM CDTSevere Thunderstorm WarningILXChampaign, Douglas49 min
May 17, 11:11 PM CDTSevere Thunderstorm WarningILXColes, Moultrie49 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.