Alert archive / Illinois / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 78, NWS Lincoln, IL

August 8, 1994Piatt County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Aug 8, 1994, 5:25 PM CDT for Piatt County, Illinois. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
Aug 8, 1994, 5:25 PM CDT (22:25 UTC)
Expired
Aug 8, 1994, 6:15 PM CDT
In force
50 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Piatt County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.4 hours before the alert went out and 327 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 1994-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1994-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1136 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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, Aug 8, 3:15 PM CDT, 2 hours 10 minutes before
ILZ043>046-053>057-082100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
315 PM CDT MON AUG 8 1994

...THUNDERSTORMS DEVELOPING RAPIDLY OVER EAST CENTRAL ILLINOIS...

AT 310 PM CDT...RADAR INDICATED RAPID DEVELOPMENT OF THUNDERSTORMS
AND SHOWERS FROM JUST SOUTH OF BLOOMINGTON TO JUST NORTH OF CHAMPAIGN
...URBANA TO DANVILLE.

THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 20 MPH.

THE STRONGEST STORM WAS LOCATED 13 MILES NORTHWEST OF CHAMPAIGN...
BETWEEN MAHOMET AND BELLFLOWER.  THIS STORM WILL BE MOVING INTO
THE CHAMPAIGN...URBANA AREA AROUND 330 PM.

BRIEF GUSTY WINDS TO 45 MPH...HAIL...VERY HEAVY RAIN AND DEADLY
LIGHTNING WILL ACCOMPANY THIS STRONG STORM.  IF THREATENING WEATHER
APPROACHES GO TO A PLACE OF SHELTER UNTIL THE STORM HAS PASSED.

PALMER
Special weather statement, Aug 8, 3:17 PM CDT, 2 hours 8 minutes before
ILZ038-082220-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
317 PM CDT MON AUG 8 1994

...THUNDERSTORMS DEVELOPING OVER MCLEAN COUNTY...

RADAR INDICATES THUNDERSTORM DEVELOPMENT HAS BEGUN IN MCLEAN COUNTY...IN
THE VICINITY OF RANDOLPH...7 MILES SOUTH OF BLOOMINGTON..AND JUST
SOUTHEAST OF BELLFLOWER...27 MILES EAST SOUTHEAST OF BLOOMINGTON.
THESE STORMS ARE MOVING TO THE SOUTHEAST AT 30 MPH.

LOCALLY HEAVY RAINFALL...GUSTING WINDS...LIGHTNING...AND SMALL HAIL
COULD BE ASSOCIATED WITH THESE STORMS.

BUCKINGHAM
Special weather statement, Aug 8, 4:21 PM CDT, 1 hour 4 minutes before
ILZ042>048-050>057-059>063-082225-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
421 PM CDT MON AUG 8 1994

...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR CENTRAL AND EAST
CENTRAL ILLINOIS UNTIL 10 PM CDT...

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR ALL OF CENTRAL AND EAST
CENTRAL ILLINOIS.  THIS WATCH IS IN EFFECT UNTIL 10 PM THIS EVENING AND
INCLUDES THE SPRINGFIELD...DECATUR...CHAMPAIGN/URBANA...DANVILLE...AND
CHARLESTON AREAS.

AT 410 PM CDT...RADAR INDICATED STRONG THUNDERSTORMS ACROSS THE
NORTHERN HALF OF EAST CENTRAL ILLINOIS...NORTH OF A LINE FROM 30 MILES
SOUTHWEST OF CHAMPAIGN TO 25 MILES OF DANVILLE.

THESE STORMS WERE MOVING TO THE EAST SOUTHEAST AT 10 MPH.

NO THUNDERSTORMS HAD DEVELOPED ACROSS CENTRAL ILLINOIS AT THIS TIME.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

STAY TUNED TO NOAA WEATHER RADIO...RADIO OR TELEVISION FOR THE
LATEST UPDATES CONCERNING THIS DEVELOPING WEATHER SITUATION.

AUTEN
Special weather statement, Aug 8, 4:22 PM CDT, 1 hour 3 minutes before
ILZ042>048-050>057-059>063-082225-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
421 PM CDT MON AUG 8 1994

...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR CENTRAL AND EAST
CENTRAL ILLINOIS UNTIL 10 PM CDT...

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR ALL OF CENTRAL AND EAST
CENTRAL ILLINOIS.  THIS WATCH IS IN EFFECT UNTIL 10 PM THIS EVENING AND
INCLUDES THE SPRINGFIELD...DECATUR...CHAMPAIGN/URBANA...DANVILLE...AND
CHARLESTON AREAS.

AT 410 PM CDT...RADAR INDICATED STRONG THUNDERSTORMS ACROSS THE
NORTHERN HALF OF EAST CENTRAL ILLINOIS...NORTH OF A LINE FROM 30 MILES
SOUTHWEST OF CHAMPAIGN TO 25 MILES OF DANVILLE.

THESE STORMS WERE MOVING TO THE EAST SOUTHEAST AT 10 MPH.

NO THUNDERSTORMS HAD DEVELOPED ACROSS CENTRAL ILLINOIS AT THIS TIME.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAtIN.  STREETS MAY FLOOD QUICKLY.

STAY TUNED TO NOAA WEATHER RADIO...RADIO OR TELEVISION FOR THE
LATEST UPDATES CONCERNING THIS DEVELOPING WEATHER SITUATION.

AUTEN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 3:56 PM CDTSevere Thunderstorm WarningILXChampaign49 min
Aug 8, 4:38 PM CDTTornado WarningILXVermilion22 min
Aug 8, 6:10 PM CDTSevere Thunderstorm WarningILXEdgar50 min
Aug 8, 6:14 PM CDTSevere Thunderstorm WarningILXChampaign, Piatt30 min
Aug 8, 6:29 PM CDTTornado WarningILXEdgar31 min
Aug 8, 6:37 PM CDTSevere Thunderstorm WarningILXMacon, Piatt53 min
Aug 8, 6:50 PM CDTSevere Thunderstorm WarningILXClark40 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.