Alert archive / Illinois / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 51, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 27, 1994, 6:58 PM CDT for Madison County, Saint Clair County, Illinois. It was in force for 47 min.
The area
The counties it named.
The facts
- Issued
- Apr 27, 1994, 6:58 PM CDT (23:58 UTC)
- Expired
- Apr 27, 1994, 7:45 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Madison County, IL, Saint Clair County, IL
The radar
The St Louis radar (KLSX), 67 km from the middle of the area, began a volume at 00:03 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 12.0 hours before the alert went out and 206 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
- 1797 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 618 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 4.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 280000 SVRSTL ILC119-163-280045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 658 PM CDT WED APR 27 1994 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 745 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ILLINOIS ...EASTERN MADISON COUNTY...NORTHERN ST CLAIR COUNTY AT 655 PM...A SEVERE THUNDERSTORM WAS LOCATED JUST NORTH OF BELLEVILLE MOVING TO THE NORTHEAST AT 35 MPH. IF YOU LIVE IN LEBANON...COLLINSVILLE...AND HIGHLAND TAKE COVER NOW. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAI8N... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. FG/ST
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 27, 5:45 PM CDT, 1 hour 13 minutes before
MOZ052-027-036-035-ILZ095-096-097-272340- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 544 PM CDT WED APR 27 1994 ...SEVERE THUNDERSTORM WATCH UNTIL 9 PM FOR PORTIONS OF WEST CENTRAL MISSOURI AND EAST CENTRAL KANSAS HAS BEEN CANCELLED... THE SEVERE THUNDERSTORM WATCH FOR THE COUNTIES OF CLAY...JACKSON... PLATTE...RAY IN MISSOURI...AND JOHNSON...LEAVENWORTH...AND WYANDOTTE IN KANSAS HAS BEEN CANCELLED. SHOWERS AND THUNDERSTORMS RHAVE DECREASED IN INTENSITY...AND SHOULD NO LONGER HAVE A SEVERE WEATHER POTENTIAL. METZE
Special weather statement, Apr 27, 5:47 PM CDT, 1 hour 11 minutes before
MOZ028-029-030-037-038-KSZ103-104-105-272340- SPECIAL WEATHER STATEMENT...CORRECTION FOR CODING NATIONAL WEATHER SERVICE ST LOUIS MO 544 PM CDT WED APR 27 1994 ...SEVERE THUNDERSTORM WATCH UNTIL 9 PM FOR PORTIONS OF WEST CENTRAL MISSOURI AND EAST CENTRAL KANSAS HAS BEEN CANCELLED... THE SEVERE THUNDERSTORM WATCH FOR THE COUNTIES OF CLAY...JACKSON... PLATTE...RAY IN MISSOURI...AND JOHNSON...LEAVENWORTH...AND WYANDOTTE IN KANSAS HAS BEEN CANCE^LLED. SHOWERS AND THUNDERSTORMS HAVE DECREASED IN INTENSITY...AND SHOULD NO LONGER HAVE A SEVERE WEATHER POTENTIAL. METZE
Special weather statement, Apr 27, 5:48 PM CDT, 1 hour 10 minutes before
MOZ024-025-032-033-039>042-045>051-055>059-068>070-280050- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MISSOURI 546 PM CDT WED APR 27 1994 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF CENTRAL MISSOURI UNTIL 900 PM TONIGHT... AT 540 PM...WEATHER RADAR INDICATED WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS OVER A LARGE PORTION OF MID MISSOURI. A BROAD BAND OF HEAVY SHOWERS AND STRONG THUNDERSTORMS COVERED MOST OF WEST AND NORTH CENTRAL MISSOURI...WEST AND NORTH OF A LINE THAT EXTENDED FROM 50 MILES SOUTHWEST OF SEDALIA...TO 20 MILES NORTH OF COLUMBIA...TO 40 MILES EAST OF COLUMBIA. OTHER STORMS WERE CLUSTERED SOUTHEAST OF THE LAKE OF THE OZARKS...OVER PULASKI COUNTY. THE AREA OF SHOWERS AS A WHOLE WAS SLOWLY DRIFTING EASTWARD...WHILE INDIVIDUAL STORMS WERE MOVING NORTHEAST AT 35 MPH. HAIL AND STRONG GUSTY WINDS WILL ACCOMPANY THE THUNDERSTORMS AND THE WIDESPREAD AND OCCASIONALLY HEAVY RAIN MAY CAUSE SOME LOCALIZED FLOODING. THE STORMS WILL SPREAD ACROSS ALL OF MISSOURI DURING THE NEXT SEVERAL HOURS AND RESIDENTS ARE URGED TO KEEP ABREAST OF CHANGING WEATHER CONDITIONS BY LISTENING TO WEATHER RADIO FOR LATER STATEMENTS OR POSSIBLE WARNING`S. IF YOU EXPERIENCE SEVERE WEATHER IN YOUR AREA...REPORT OCCURRENCES TO YOUR NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. PERLOW
Special weather statement, Apr 27, 5:51 PM CDT, 1 hour 7 minutes before
MOZ052-061-063-064-060-272345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 549 PM CDT WED APR 27 1994 ...SEVERE THUNDERSTORM WATCH UNTIL 1000 PM... AT 545 PM...RADAR SHOWED STRONG THUNDERSTORMS FROM EASTERN LINCOLN COUNTY THROUGH WESTERN ST CHARLES AND EASTERN WARREN COUNTIES. THESE STORMS WERE MOVING TO THE NORTHEAST AT 35 MPH. THESE STORMS WILL EFFEECT THE NORTHERN PORTION OF THE ST LOUIS AREA THROUGH 700 PM THIS EVENlING. YOU CAN EXPECT DEADLY LIGHTNING... HEAVY RAIN...GUSTY WINDS...AND SMALL HAIL. MOTORISTS SHOULD BE CAREFUL OF WATER PONDING OF ROADWAYS. FG/DF
Special weather statement, Apr 27, 6:44 PM CDT, 14 minutes before
MOZ093-101-102-103-095-104-096-105-280045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 644 PM CDT WED APR 27 1994 ...TORNADO WATCH 153 FOR PORTIONS OF SOUTHWEST MISSOURI HAS BEEN CANCELLED... ...FLASH FLOOD WATCH CONTINUES FOR PORTIONS OF SOUTHWEST MISSOURI TONIGHT AND THURSDAY MORNING... THE TORNADO WATCH...# 153...UNTIL 9 PM CDT FOR BARRY...CHRISTIAN...DOUGLAS... MCDONALD...NEWTON...OZARK...STONE...AND TANEY COUTNIES IN MISSOURI HAS BEEN CANCELLED. SHOWERS AND THUNDERSTORMS HAVE MOVED OUT OF THE AREA...AND ARE NOT EXPECTED TO BE SEVERE. HOWEVER...SHOWERS AND THUNDERSTORMS WERE QUICKLY DEVELOPING THROUGHOUT CENTRAL KANSAS AND CENTRAL OKLAHOMA THIS EVENING. THESE STORMS WILL CONTINUE TO DEVELOP AND MOVE TO THE NORTHEAST... AND SHOULD MOVE INTO THE AREA LATER ON TONIGHT. THESE STORMS WILL HAVE THE CAPABILITY OF PRODUCING HAIL...STRONG GUSTY WINDS...AND HEAVY RAINFALL. SOME OF THE HEAVY RAINFALL MAY PRODUCE FLASH FL OODING OVERNIGHT INTO THURSDAY MORNING. STAY TUNED TO LOCAL MEDIA FOR FURTHER WATCHES AND WARNINGS. METZE
Special weather statement, Apr 27, 6:46 PM CDT, 12 minutes before
MOZ062-061-063-064-ILZ100-101-280045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 645 PM CDT WED APR 27 1994 ...THUNDERSTORMS WERE MOVING ACROSS THE ST LOUIS METRO AREA... AT 640 PM CDT...NATIONAL WEATHER SERVICE RADAR INIDCATED A LINE OF THUNDERSTORMS FROM NORTHERN MONROE COUNTY ILLINOIS THROUGH DOWNTOWN ST LOUIS TO EASTERN ST CHARLES COUNTY. THE STORMS WERE MOVING TO THE NORTHEAST AT 35 MPH. THE STORMS WILL BE MOVING THROUGH THE ILLINOIS COUNTIES OF ST CLAIR AND MADISON BY 730 PM. PEOPLE IN CENTERVILLE...GRANITE CITY...EDWARDSVILLE AND ALTON CAN EXPECT A BRIEF PERIOD OF VERY HEAVY RAIN...WINDS GUSTING TO 35 MPH AND SOME HAIL AS THESE STORMS MOVE THROUGH. ALSO A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE ST LOUIS METRO AREA UNTIL 10 PM. FERRY
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 8:07 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 68 min |
| Apr 26, 8:55 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 65 min |
| Apr 26, 9:12 PM CDT | Tornado Warning | LSX | Macoupin, Montgomery | 33 min |
| Apr 26, 9:27 PM CDT | Tornado Warning | LSX | Monroe | 48 min |
| Apr 26, 9:43 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 47 min |
| Apr 26, 9:54 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 66 min |
| Apr 26, 10:14 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 61 min |
| Apr 26, 10:30 PM CDT | Severe Thunderstorm Warning | LSX | Bond | 45 min |
| Apr 26, 10:39 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 51 min |
| Apr 26, 10:47 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Marion | 58 min |
| Apr 27, 12:33 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 42 min |
| Apr 27, 1:12 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair | 48 min |
| Apr 27, 2:40 AM CDT | Severe Thunderstorm Warning | LSX | Randolph | 50 min |
| Apr 27, 3:02 AM CDT | Severe Thunderstorm Warning | LSX | Perry | 43 min |
| Apr 27, 3:20 AM CDT | Tornado Warning | LSX | Perry | 27 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; radar from the NEXRAD Level II archive.