Alert archive / Illinois / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 21, NWS Lincoln, IL

April 26, 1994Christian County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 26, 1994, 7:45 PM CDT for Christian County, Illinois. It was in force for 30 min.

The area

The counties it named.

The facts

Issued: Apr 26, 1994, 7:45 PM CDT (00:45 UTC)
Expired: Apr 26, 1994, 8:15 PM CDT
In force: 30 min
Issued by: NWS Lincoln, IL
Area: Whole counties

County Christian County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 0.8 hours before the alert went out and 280 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2999 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1036 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 10.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSPI 270048
SVRSPI
ILC021-270115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD IL
745 PM CDT TUE APR 26 1994
 
THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  815 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL ILLINOIS
 
   ...CHRISTIAN COUNTY
 
AT 743 PM CDT...RADAR INDICATED AN AREA OF SEVERE THUNDERSTORMS WHICH
EXTENDED FROM 30 MILES SOUTH OF SPRINGFIELD...NEAR FARMERSVILLE TO
EDINBURG...17 MILES SOUTHEAST OF SPRINGFIELD.
 
THE STORMS WERE MOVING TO THE EAST NORTHEAST AT 30 MPH AND SHOULD MOVE
THROUGH THE FOLLOWING TOWNS ...MORRISONVILLE...TAYLORVILLE...KINCAID
...EDINBURG AND STONINGTON.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING...SO BE ON THE LOOKOUT.
 
 
BYRD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 7:01 PM CDT	Severe Thunderstorm Warning	ILX	Christian	44 min
Apr 26, 7:18 PM CDT	Severe Thunderstorm Warning	ILX	McLean, Tazewell, Woodford	42 min
Apr 26, 7:21 PM CDT	Severe Thunderstorm Warning	ILX	Macon	54 min
Apr 26, 7:52 PM CDT	Tornado Warning	ILX	Macon, Shelby	38 min
Apr 26, 8:28 PM CDT	Tornado Warning	ILX	Christian	19 min
Apr 26, 8:28 PM CDT	Tornado Warning	ILX	Macon, Moultrie, Shelby	47 min
Apr 26, 8:51 PM CDT	Severe Thunderstorm Warning	ILX	Macoupin, Montgomery	61 min
Apr 26, 9:04 PM CDT	Tornado Warning	ILX	McLean	41 min
Apr 26, 9:08 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Douglas, Moultrie	52 min
Apr 26, 9:34 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Macon, Sangamon	41 min
Apr 26, 9:37 PM CDT	Tornado Warning	ILX	Douglas	38 min
Apr 26, 10:11 PM CDT	Tornado Warning	ILX	Champaign, Piatt	44 min
Apr 26, 10:11 PM CDT	Tornado Warning	ILX	DeWitt	44 min
Apr 26, 10:11 PM CDT	Tornado Warning	ILX	Montgomery	34 min
Apr 26, 10:25 PM CDT	Severe Thunderstorm Warning	ILX	Edgar, Vermilion	30 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1994 Every 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.