Alert archive / Illinois / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 33, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 6, 1993, 7:15 PM CDT for Monroe County, Saint Clair County, Illinois; Saint Louis County, Missouri. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- May 6, 1993, 7:15 PM CDT (00:15 UTC)
- Expired
- May 6, 1993, 8:00 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Monroe County, IL, Saint Clair County, IL, Saint Louis County, MO
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 00:00Z, 0.3 hours before the alert went out and 202 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
- 495 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1641 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- -14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 070016 SVRSTL ILC133-163-MOC189-070100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 715 PM CDT THU MAY 6 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 800 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ILLINOIS ...NORTHERN MONROE COUNTY...WESTERN ST CLAIR COUNTY IN EAST CENTRAL MISSOURI ...SOUTHEASTERN ST LOUIS COUNTY AT 714 PM...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER SOUTHEAST ST LOUIS COUNTY...ABOUT 5 MILES EAST OF FENTON...MOVING EAST AT 10 MILES AN HOUR. CITIES IN THE PATH OF THIS STORM INCLUDE...COLUMBIA... CENTERVILLE...DUPO...AND KAHOKIA. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...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. TRUETT/GLASS
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, May 6, 4:30 PM CDT, 2 hours 45 minutes before
MOZ006-009-010-011-013-014-062300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 430 PM CDT THU MAY 6 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF EASTERN MISSOURI UNTIL 10 PM... AT 430 PM...SCATTERED STRONG THUNDERSTORMS WERE LOCATED IN A LINE THAT EXTENDED FROM JUST EAST OF KIRKSVILLE...TO 30 MILES SOUTHWEST OF ST LOUIS. OVER THE REMAINDER OF THE REGION...THE THUNDERSTORMS WERE ISOLATED AND DID NOT APPEAR TO BE A SEVERE WEATHER THREAT. THE STORMS WERE MOVING NORTHEAST AT 30 MPH. RESIDENTS IN CENTRAL MISSOURI...PRIMARILY IN THE EASTERN PART...SHOULD REMAIN ON THE ALERT FOR POSSIBLE SEVERE WEATHER...INCLUDING HAIL... DAMAGING WINDS...DANGEROUS LIGHTNING...AND BRIEF BUT HEAVY DOWNPOURS. THE THREAT OF THUNDERSTORMS WILL DIMINISH LATE THIS EVENING...BUT A FEW STORMS MAY PERSIST INTO THE NIGHT. PERLOW
Special weather statement, May 6, 4:33 PM CDT, 2 hours 42 minutes before
MOZ006-009-010-011-013-014-062300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 430 PM CDT THU MAY 6 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF EASTERN MISSOURI UNTIL 10 PM... AT 430 PM...SCATTERED STRONG THUNDERSTORMS WERE LOCATED IN A LINE THAT EXTENDED FROM JUST EAST OF KIRKSVILLE...TO 30 MILES SOUTHWEST OF ST LOUIS. OVER THE REMAINDER OF THE REGION...THE THUNDERSTORMS WERE ISOLATED AND DID NOT APPEAR TO BE A SEVERE WEATHER THREAT. THE STORMS WERE MOVING NORTHEAST AT 30 MPH. RESIDENTS IN CENTRAL MISSOURI...PRIMARILY IN THE EASTERN PART...SHOULD REMAIN ON THE ALERT FOR POSSIBLE SEVERE WEATHER...INCLUDING HAIL... DAMAGING WINDS...DANGEROUS LIGHTNRING...AND BRIEF BUT HEAVY DOWNPOURS. THE THREAT OF THUNDERSTORMS WILL DIMINISH LATE THIS EVENING...BUT A FEW STORMS MAY PERSIST INTO THE NIGHT. PERLOW
Special weather statement, May 6, 5:22 PM CDT, 1 hour 53 minutes before
ILZ011-012-062330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 522 PM CDT THU MAY 6 1993 ...STRONG THUNDERSTORMS OCCURRING OVER PARTS OF SOUTH CENTRAL ILLINOIS... AT 520 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS OCCURRING OVER SOUTH CENTRAL ILLINOIS...ABOUT 25 MILES WEST OF EFFINGHAM. THESE STORMS HAVE BEEN DRIFTING SOUTH AT 5 TO 10 MILES AN HOUR. WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS AS OF 515 PM...THEY WERE PRODUCING SMALL HAIL AND EXTREMELY HEAVY RAINS. THESE CONDITIONS CAN BE EXPECTED IN AREAS BETWEEN EFFINGHAM AND VANDALIA BETWEEN 520 AND 6 PM THIS EVENING. FURTHER INTENSIFICATION OF THESE STORMS IS ALSO POSSIBLE...AND A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF SOUTHWEST AND PARTS OF SOUTH CENTRAL ILLINOIS UNTIL 10 PM. TRUETT &
Special weather statement, May 6, 5:22 PM CDT, 1 hour 53 minutes before
ILZ011-012-062330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 522 PM CDT THU MAY 6 1993 ...STRONG THUNDERSTORMS OCCURRING OVER PARTS OF SOUTH CENTRAL ILLINOIS... AT 520 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS OCCURRING OVER SOUTH CENTRAL ILLINOIS...ABOUT 25 MILES WEST OF EFFINGHAM. THESE STORMS HAVE BEEN DRIFTING SOUTH AT 5 TO 10 MILES AN HOUR. WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS AS OF 515 PM...THEY WERE PRODUCING SMALL HAIL AND EXTREMELY HEAVY RAINS. THESE CONDITIONS CAN BE EXPECTED IN AREAS BETWEEN EFFINGHAM AND VANDALIA BETWEEN 520 AND 6 PM THIS EVENING. FURTHER INTENSIFICATION OF THESE STORMS IS ALSO POSSIBLE...AND A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF SOUTHWEST AND PARTS OF SOUTH CENTRAL ILLINOIS UNTIL 10 PM. TRUETT &
Special weather statement, May 6, 6:15 PM CDT, 1 hour before
ILZ011-012-070015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 615 PM CDT THU MAY 6 1993 ...STRONG THUNDERSTORMS CONTINUE OVER SOUTH CENTRAL ILLINOIS... STRONG THUNDERSTORMS CONTINUED OVER PARTS OF SOUTH CENTRAL ILLINOIS THIS EVENING. AT 615 PM...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE STRONGEST STORMS WERE ALONG THE CLAY...MARION COUNTY LINE...OR ABOUT 10 TO 30 MILES SOUTH OF EFFINGHAM. ALTHOUGH NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS...EXTREMELY HEAVY RAINS AND SOME SMALL HAIL CAN BE EXPECTED AS THE STORMS DRIFT SOUTHEAST AT 10 TO 20 MILES AN HOUR. FROM 615 TO 7 PM...IT APPEARS THAT THE STRONGEST STORMS WILL REMAIN SOUTH OF EFFINGHAM.|..AND EAST OF SALEM. TRUETT/GLASS
Special weather statement, May 6, 6:15 PM CDT, 1 hour before
ILZ011-012-070015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 615 PM CDT THU MAY 6 1993 ...STRONG THUNDERSTORMS CONTINUE OVER SOUTH CENTRAL ILLINOIS... STRONG THUNDERSTORMS CONTINUED OVER PARTS OF SOUTH CENTRAL ILLINOIS THIS EVENING. AT 615 PM...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE STRONGEST STORMS WERE ALONG THE CLAY...MARION COUNTY LINE...OR ABOUT 10 TO 30 MILES SOUTH OF EFFINGHAM. ALTHOUGH NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS...EXTREMELY HEAVY RAINS AND SOME SMALL HAIL CAN BE EXPECTED AS THE STORMS DRIFT SOUTHEAST AT 10 TO 20 MILES AN HOUR. FROM 615 TO 7 PM...IT APPEARS THAT THE STRONGEST STORMS WILL REMAIN SOUTH OF EFFINGHAM.|..AND EAST OF SALEM. TRUETT/GLASS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 7:59 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 61 min |
| May 6, 8:52 PM CDT | Flash Flood Warning | LSX | Monroe, Saint Clair | 3 hr |
| May 6, 9:00 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 60 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1993Severe Thunderstorm Warnings in Missouri, 1993Every severe thunderstorm warning in 1993
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.