Alert archive / Illinois / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 9, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Apr 15, 1994, 4:39 AM CDT for Champaign County, Illinois. It was in force for 46 min.
The area
The counties it named.
The facts
- Issued
- Apr 15, 1994, 4:39 AM CDT (09:39 UTC)
- Expired
- Apr 15, 1994, 5:25 AM CDT
- In force
- 46 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County Champaign County, IL
The nearest sounding before it
Dayton/James M C, OH (KDAY), launched 00:00Z, 9.7 hours before the alert went out and 342 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
- 332 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 2007 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSPI 150941 SVRSPI ILC147-019-151045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SPRINGFIELD IL 439 AM CDT FRI APR 15 1994 THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL ILLINOIS ...PIATT COUNTY IN EAST CENTRAL ILLINOIS ...WESTERN CHAMPAIGN COUNTY AT 438 AM CDT RADAR INDICATED SEVERE THUNDERSTORMS IN PIATT COUNTY...ABOUT 10 MILES NORTHEAST OF DECATUR NEAR CERRO GORDO. THE STORMS WERE MOVING TO THE EAST-NORTHEAST AT 40 MPH. THE STORMS WILL MOVE THROUGH THE TOWNS OF MONTICELLO...MAHOMET... RANTOUL... AND CHAMPAIGN/URBANA BY 530 AM CDT. 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. GEELHART
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, Apr 15, 3:06 AM CDT, 1 hour 33 minutes before
ILZ042-047-048-050-051-059-150905- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 306 AM CDT FRI APR 15 1994 ...A TORNADO WATCH IS IN EFFECT UNTIL 9 AM CDT FOR PORTIONS OF CENTRAL ILLINOIS... AT 3 AM CDT...WEATHER RADAR FROM SPRINGFIELD SHOWED A LINE OF STRONG TO SEVERE THUNDERSTORMS EXTENDING FROM JUST EAST OF THE QUAD CITIES...TO SOUTH OF QUINCY...AND WESTWARD TOWARD COLUMBIA MISSOURI. THE STORMS ARE MOVING TO THE EAST AT 45 MPH. THE LINE OF THUNDERSTORMS SHOULD MOVE INTO CASS AND MORGAN COUNTIES BY 4 PM...AND REACH THE SPRINGFIELD AREA AROUND 5 AM. THIS LINE OF THUNDERSTORMS HAS A HISTORY OF PRODUCING SEVERE WEATHER WHILE TRAVELLING ACROSS IOWA...MISSOURI...AND FAR WESTERN ILLINOIS. PEOPLE IN CENTRAL ILLINOIS SHOULD BE AWARE OF THE POTENTIAL OF DANGEROUS WEATHER THIS MORNING. MOVE TO THE BASEMENT OR AN INTERIOR ROOM IF SEVERE WEATHER APPROACHES. GEELHART
Special weather statement, Apr 15, 3:41 AM CDT, 58 minutes before
ILZ043-044-051>053-150945- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 341 AM CDT FRI APR 15 1994 ...THUNDERSTORMS WERE QUICKLY DEVELOPING NORTHEAST OF SPRINGFIELD... AT 330 AM CDT...SPRINGFIELD RADAR SHOWED THUNDERSTORMS HAD DEVELOPED IN DE WITT COUNTY NEAR CLINTON...AND JUST NORTHEAST OF SPRINGFIELD. THESE STORMS WERE MOVING TO THE EAST AT 45 MPH. THE STORMS SHOULD MOVE THROUGH THE TOWNS OF FARMER CITY... DECATUR... A$ND ILLIOPOLIS BY 445 AM CDT. SOME OF THESE STORMS MAY CONTAIN SMALL HAIL...GUSTY WINDS...DEADLY LIGHTNING AND VERY HEAVY DOWNPOURS OF RAIN. GEELHART
Special weather statement, Apr 15, 3:48 AM CDT, 51 minutes before
ILZ017-018-025>031-034>038-040-041-150950- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 347 AM CDT FRI APR 15 1994 ...TORNADO WATCH FOR ALL OF WEST CENTRAL ILLINOIS UNTIL 9 AM CDT... AT 350 AM CDT...A LINE OF THUNDERSTORMS AND SHOWERS WAS FROM 10 MILES EAST OF MOLINE EXTENDING SOUTHWEST TO JUST NORTH OF ST LOUIS. THE STRONGER STORMS WITHIN THE LINE WERE IN FULTON AND KNOX COUNTY. ANOTHER ISOLATED STRONG THUNDERSTORM WAS 15 MILES SOUTHEAST OF BLOOMINGTON NEAR LEROY. MOVEMENT OF THE STORMS WERE NORTHEAST AT 45 MPH. SEVERAL REPORTS OF PEA SIZE HAIL HAVE BEEN REPORTED WITH SOME OF THESE STORMS ALONG WITH BRIEF PERIODS OF GUSTY WINDS...HEAVY RAINFALL AND FREQUENT LIGHTNING. REMENBER...TORNADOES AND SEVERE THUNDERSTORMS ARE POSSIBLE IN AND CLOSE TO THE WATCH AREA. PERSONS IN THE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. STUMETZ
Special weather statement, Apr 15, 4:25 AM CDT, 14 minutes before
ILZ042-047-048-050-051-052-059-060-151030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 424 AM CDT FRI APR 15 1994 ...STRONG THUNDERSTORMS MOVING THROUGH SPRINGFIELD... AT 423 AM CDT...STRONG THUNDERSTORMS HAD REACHED THE SPRINGFIELD AREA...AND WERE PRODUCING PEA-SIZE HAIL AT CAPITAL AIRPORT. THIS WAS PART OF A LARGER AREA OF SHOWERS AND THUNDERSTORMS EXTENDING FROM LA SALLE TO NORTHWEST OF ST LOUIS. THE STORMS WERE MOVING TO THE EAST-NORTHEAST AT 40 MPH. RESIDENTS OF LOGAN...EASTERN SANGAMON...MACOUPIN...CHRISTIAN... AND MONTGOMERY COUNTIES SHOULD PREPARE FOR DANGEROUS LIGHTNING...GUSTY WINDS...AND POSSIBLE HAIL. GEELHART &
Special weather statement, Apr 15, 4:33 AM CDT, 6 minutes before
ILZ017-018-025>031-034>038-040-041-151035- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 432 AM CDT FRI APR 15 1994 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 AM CDT FOR ALL OF WEST CENTRAL ILLINOIS... AT 330 AM CDT...NUMEROUS THUNDERSTORMS WERE MOVING THROUGH MAINLY EAST OF THE ILLINOIS RIVER. NUMEROUS REPORTS OF PEA SIZE HAIL ALONG WITH BRIEF PERIODS OF GUSTY WINDS...HEAVY AINFALL AND FREQUENT LIGHTNING HAVE BEEN REPORTED WITH THE STRONGER STORMS. MOVEMENT WAS NORTHEAST AT 45 MPH. WIND GUST OF 38 MPH WAS OBSERVED AS ONE OF THESE STORMS PASSED OVER THE WEATHER OFFICE. A LARGE AREA OF RAIN AND SHOWERS EXTENDED ALL THE WAY WEST TO THE MISSISSIPPI RIVER. SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER MUCH OF WEST CENTRAL ILLINOIS THROUGH 6 AM. REMENBER...TORNADOES AND SEVERE THUNDERSTORMS ARE POSSIBLE IN AND CLOSE TO THE WATCH AREA. PERSONS IN AND CLOSE TO THE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THREATENINGX WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. STUMETZ
Special weather statement, Apr 15, 4:35 AM CDT, 4 minutes before
ILZ017-018-025>031-034>038-040-041-151035- SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE PEORIA IL 432 AM CDT FRI APR 15 1994 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 AM CDT FOR ALL OF WEST CENTRAL ILLINOIS... AT 430 AM CDT...NUMEROUS THUNDERSTORMS WERE MOVING THROUGH MAINLY EAST OF THE ILLINOIS RIVER. NUMEROUS REPORTS OF PEA SIZE HAIL ALONG WITH BRIEF PERIODS OF GUSTY WINDS...HEAVY AINFALL AND FREQUENT LIGHTNING HAVE BEEN REPORTED WITH THE STRONGER STORMS. MOVEMENT WAS NORTHEAST AT 45 MPH. WIND GUST OF 38 MPH WAS OBSERVED AS ONE OF THESE STORMS PASSED OVER THE WEATHER OFFICE. A LARGE AREA OF RAIN AND SHOWERS EXTENDED ALL THE WAY WEST TO THE MISSISSIPPI RIVER. SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER MUCH OF WEST CENTRAL ILLINOIS THROUGH 6 AM. REMENBER...TORNADOES AND SEVERE THUNDERSTORMS ARE POSSIBLE IN AND CLOSE TO THE WATCH AREA. PERSONS IN AND CLOSE TO THE WATCH AREA SHOULD BE ON THE LOOKOU^T FOR THREATENING WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. STUMETZ /TYPO/
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 11:34 PM CDT | Severe Thunderstorm Warning | ILX | Carroll, Stephenson | 41 min |
| Apr 15, 12:05 AM CDT | Severe Thunderstorm Warning | ILX | Winnebago | 27 min |
| Apr 15, 3:13 AM CDT | Severe Thunderstorm Warning | ILX | Carroll | 32 min |
| Apr 15, 3:37 AM CDT | Severe Thunderstorm Warning | ILX | Lee, Ogle | 53 min |
| Apr 15, 4:01 AM CDT | Severe Thunderstorm Warning | ILX | Winnebago | 34 min |
| Apr 15, 4:06 AM CDT | Severe Thunderstorm Warning | ILX | Menard | 39 min |
| Apr 15, 4:39 AM CDT | Severe Thunderstorm Warning | ILX | Piatt | 45 min |
| Apr 15, 4:59 AM CDT | Severe Thunderstorm Warning | ILX | McLean | 61 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.