Alert archive / Illinois / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 65, NWS Lincoln, IL

July 20, 1994McDonough County, Warren County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 20, 1994, 2:48 PM CDT for McDonough County, Warren County, Illinois. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Jul 20, 1994, 2:48 PM CDT (19:48 UTC)
Expired
Jul 20, 1994, 3:30 PM CDT
In force
42 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties McDonough County, IL, Warren County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 7.8 hours before the alert went out and 433 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 12:00Z on 1994-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2213 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 12:00Z on 1994-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 square meters per square second.1939Sfc1 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
2213 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
918 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
-21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPIA 201950 RRA
SVRPIA
ILC109-187-202030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEORIA IL
248 PM CDT WED JUL 20 1994
 
THE NATIONAL WEATHER SERVICE IN PEORIA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL ILLINOIS
 
   ...NORTHERN MCDONOUGH COUNTY...SOUTHERN WARREN COUNTY
 
AT 345 PM... RADAR INDICATED A SEVERE THUNDERSTORM NEAR LA HARPE...20
MILES SOUTHEAST OF BURLINGTON. THIS STORM WAS MOVING NORTHEAST AT 30 TO
35 MPH. THIS STORM WILL MOVE ACROSS NORTHERN MCDONOUGH AND SOUTHERN
WARREN COUNTIES.
 
TOWNS IN THE PATH OF THE STORM ARE BLANDINSVILLE...SCIOTA...SWAN CREEK
ANDF YOUNGSTOWN.
 
 
 
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES.
 
 
MOGGED

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, Jul 20, 1:29 PM CDT, 1 hour 19 minutes before
ILZ057-201850-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
1 25 PM CDT WED JUL 20 1994

...STRONG THUNDRSTORMS IN EAST CENTRAL ILLINOIS...WEST OF TERRE HAUTE
   INDIANA...

AT 1 20 PM CDT...RADAR SHOWED A LINE OF STRONG THUNDERSTORMS IN CALRK
COUNTY IN EAST CENTRAL ILLINOIS...ABOUT 25 TO 30 MILES WEST NORTHWEST
OF TERRE HAUTE INDIANA.  THE THUNDERSTORMS WERE FROM THE NORTHEAST
EDGE OF WESTFIELD TO ABOUT 7 MILES NORTHWEST OF PARIS.

THE STORMS SHOWED LITTLE MOVMENT.

HEAVY RAINS WITH DEADLY LIGHTING...BRIEF GUSTY WINDS TO 45 MPH AND
SMALL HAIL CAN BE EXPECTED FROM THESE STORMS THROUGH 2 PM OVER CLARK
COUNTY.

PALMER
PALMER
Special weather statement, Jul 20, 2:32 PM CDT, 16 minutes before
ILZ017-018-025>031-034>038-040-041-202035-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
232 PM CDT WED JUL 20 1994

...STRONG STORMS DEVELOPING ACROSS WESTERN ILLINOIS...

AT 225 PM...RADAR INDICATED STRONG STORMS DEVELOPING ALONG THE
MISSISSIPPI RIVER BETWEEN BURLINGTON AND QUINCY. THE STRONGEST STORM
WAS MOVING NORTHEAST TOWARDS LA HARPE IN NORTHEASTERN HANCOCK COUNTY.
THESE STORMS WERE MOVING AT 30 TO 35 MPH. ANOTHER STORMS WAS NEAR
QUINCY. QUINCY.

EXPECT THE LA HARPE STORM TO MOVE INTO SOUTHERN HENDERSON AND WARREN
COUNTIES IN THE NEXT HALF HOUR. THE STORM NEAR QUINCY WILL MOVE INTO
THE WESTERN PORTIONS OF SCHUYLER AND MCDONOUGH COUNTIES THROUGH 330 PM.

CONDITIONS ACROSS THE AREA ARE FAVORABLE FOR THUNDERSTORM DEVELOPMENT.
 IF YOU PLAN TO BE OUTDOORS...CHECK THE LATEST WEATHER INFORMATION.

MOGGED
Special weather statement, Jul 20, 2:34 PM CDT, 14 minutes before
ILZ017-018-025>031-034>038-040-041-202035-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
232 PM CDT WED JUL 20 1994

...STRONG STORMS DEVELOPING ACROSS WESTERN ILLINOIS...

AT 225 PM...RADAR INDICATED STRONG STORMS DEVELOPING ALONG THE
MISSISSIPPI RIVER BETWEEN BURLINGTON AND QUINCY. THE STRONGEST STORM
WAS MOVING NORTHEAST TOWARDS LA HARPE IN NORTHEASTERN HANCOCK COUNTY.
THESE STORMS WERE MOVING AT 30 TO 35 MPH. ANOTHER STORMS WAS NEAR
QUINCY. QUINCY.

EXPECT THE LA HARPE STORM TO MOVE INTO SOUTHERN HENDERSON AND WARREN
COUNTIES IN THE NEXT HALF HOUR. THE STORM NEAR QUINCY WILL MOVE INTO
THE WESTERN PORTIONS OF SCHUYLER AND MCDONOUGH COUNTIES THROUGH 330 PM.

CONDITIONS A&CROSS THE AREA ARE FAVORABLE FOR THUNDERSTORM DEVELOPMENT.
 IF YOU PLAN TO BE OUTDOORS...CHECK THE LATEST WEATHER INFORMATION.

MOGGED
Special weather statement, Jul 20, 2:34 PM CDT, 14 minutes before
ILZ017-018-025>031-034>038-040-041-202035-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE PEORIA IL
234 PM CDT WED JUL 20 1994

...STRONG STORMS DEVELOPING ACROSS WESTERN ILLINOIS...

AT 225 PM...RADAR INDICATED STRONG STORMS DEVELOPING ALONG THE
MISSISSIPPI RIVER BETWEEN BURLINGTON AND QUINCY. THE STRONGEST STORM
WAS MOVING NORTHEAST TOWARDS LA HARPE IN NORTHEASTERN HANCOCK COUNTY.
THESE STORMS WERE MOVING AT 30 TO 35 MPH. ANOTHER STORM WAS NEAR
QUINCY.

EXPECT THE LA HARPE STORM TO MOVE INTO SOUTHERN HENDERSON AND
WARREN COUNTIES IN THE NEXT HALF HOUR. THE STORM NEAR QUINCY WILL MOVE
INTO THE WESTERN PORTIONS OF SCHUYLER AND MCDONOUGH COUNTIES THROUGH
330 PM.

CONDITIONS ACROSS THE AREA ARE FAVORABLE FOR THUNDERSTORM DEVELOPMENT.

 IF YOU PLAN TO BE OUTDOORS...CHECK THE LATEST WEATHER INFORMATION.

MOGGED
Special weather statement, Jul 20, 2:36 PM CDT, 12 minutes before
ILZ017-018-025>031-034>038-040-041-202035-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE PEORIA IL
234 PM CDT WED JUL 20 1994

...STRONG STORMS DEVELOPING ACROSS WESTERN ILLINOIS...

AT 225 PM...RADAR INDICATED STRONG STORMS DEVELOPING ALONG THE
MISSISSIPPI RIVER BETWEEN BURLINGTON AND QUINCY. THE STRONGEST STORM
WAS MOVING NORTHEAST TOWARDS LA HARPE IN NORTHEASTERN HANCOCK COUNTY.
THESE STORMS WERE MOVING AT 30 TO 35 MPH. ANOTHER STORM WAS NEAR
QUINCY.

EXPECT THE LA HARPE STORM TO MOVE INTO SOUTHERN HENDERSON AND
WARREN COUNTIES IN THE NEXT HALF HOUR. THE STORM NEAR QUINCY WILL MOVE
INTO THE WESTERN PORTIONS OF SCHUYLER AND MCDONOUGH COUNTIES THROUGH
330 PM.

CON.DITIONS ACROSS THE AREA ARE FAVORABLE FOR THUNDERSTORM DEVELOPMENT.

 IF YOU PLAN TO BE OUTDOORS...CHECK THE LATEST WEATHER INFORMATION.

MOGGED

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 4:38 PM CDTSevere Thunderstorm WarningILXFulton67 min
Jul 20, 4:57 PM CDTSevere Thunderstorm WarningILXMason48 min
Jul 20, 5:15 PM CDTTornado WarningILXPeoria, Tazewell45 min
Jul 20, 5:17 PM CDTSevere Thunderstorm WarningILXCass29 min
Jul 20, 5:17 PM CDTSevere Thunderstorm WarningILXMenard43 min
Jul 20, 5:17 PM CDTSevere Thunderstorm WarningILXMorgan43 min
Jul 20, 5:29 PM CDTSevere Thunderstorm WarningILXMenard, Sangamon46 min
Jul 20, 5:47 PM CDTTornado WarningILXWoodford58 min
Jul 20, 6:13 PM CDTSevere Thunderstorm WarningILXLogan, Sangamon32 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1994Every severe thunderstorm warning in 1994

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.