Alert archive / Illinois / Tornado Warnings in 1993
Tornado Warning 11, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Jul 31, 1993, 5:56 PM CDT for Madison County, Saint Clair County, Illinois. It was in force for 34 min.
The area
The counties it named.
The facts
- Issued
- Jul 31, 1993, 5:56 PM CDT (22:56 UTC)
- Expired
- Jul 31, 1993, 6:30 PM CDT
- In force
- 34 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Madison County, IL, Saint Clair County, IL
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.9 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1134 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 131 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 312257 TORSTL ILC119-163-312330- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 556 PM CDT SAT JUL 31 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 630 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ILLINOIS ...MADISON COUNTY...ST CLAIR COUNTY AT 550 PM THE PUBLIC REPORTED BRIEF TORNADO TOUCHDOWNS NEAR COLLINSVILLE AND DUPO ILLINOIS. THESE BRIEF TOUCHDOWNS ARE ALONG THE LEADING EDGE OF THE STORMS AND ARE NOT EXPECTED TO LAST LONG OR PRODUCE WIDE SPREAD DAMAGE. TAKE SHELTER THOUGH WHEN STORMS MOVE THROUGH YOUR AREA. THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF AVAILABLE. OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT. SHEA &
What forecasters said that day
The local office's own words before this tornado 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, Jul 31, 3:13 PM CDT, 2 hours 43 minutes before
MOZ006-312100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 305 PM CDT SAT JUL 31 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF CENTRAL MISSOURI UNTIL 800 PM... AT 305 PM...STRONG THUNDERSTORMS WERE MOVING TO THE SOUTHEAST ACROSS NORTHERN PARTS OF CENTRAL MISSOURI. THE LEADING EDGE OF THE STORMS WAS FROM 20 MILES NORTH OF MARHALL...NEAR BRUNSWICK...TO 20 MILES NORTHEAST OF MOBERLY. THE STRONGEST STORMS WERE IN A LINE FROM 5 MILES NORTH OF SALISBURY TO 20 MILES NORTHEAST OF MOBERLY...NEAR SHELBINA. THESE STORMS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR. THE TOWNS OF HIGBEE...HARRISBURG...CLARK AND CENTRALIA ARE IN THE PATH OF THESE STORMS BEFORE 400 PM. THESE STORMS COULD BECOME SEVERE AT ANY MOMENT...SO BE PREPARED FOR LARGE HAIL AND DAMAGING WINDS...ALONG WITH HEAVY RAINS AND DEADLY LIGHTNING. STAY INDOORS AND AWAY FROM WINDOWS. BE ALERT FOR FLOODED STREETS AND SMALL STREAMS. NEVER CROSS A FLOODED ROADWAY. IF YOU SPOT SEVERE WEATHER...CALL THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY OF THE INFORMATION TO THE NATIONAL WEATHER SERVICE. STANLEY
Special weather statement, Jul 31, 3:15 PM CDT, 2 hours 41 minutes before
MOZ001-002-004-005-008-009-312300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 315 PM CDT SAT JUL 31 1993 ...A NEW SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR PARTS OF NORTHWEST MISSOURI... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PARTS OF NORTHWEST MISSOURI UNTIL 1000 PM. THIS NEW WATCH AREA INCLUDES THE KANSAS CITY METRO AREA AND ST JOSEPH. CONDITIONS REMAIN FAVORABLE ACROSS THIS AREA FOR SEVERE THUNDERSTORMS AND VERY HEAVY RAIN. IF YOU LIVE IN OR CLOSE TO THE WATCH AREA... REMAIN ALERT FOR SEVERE THUNDERSTORMS WHICH PRODUCE LARGE HAIL... DAMAGING WIND AND FREQUENT LIGHTNING. IF STORMS APPROACH...MOVE TO A PLACE OF SHELTER AND LISTEN FOR LATER UPDATES. SHEA
Special weather statement, Jul 31, 4:15 PM CDT, 1 hour 41 minutes before
MOZ012-312330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 415 PM CDT SAT JUL 31 1993 ...STRONG WINDS ARE HEADING TOWARDS ST LOUIS... A LINE OF STRONG TO SEVERE THUNDERSTORMS WAS MOVING OUT OF NORTHEAST MISSOURI AND TOWARDS ST LOUIS THIS AFTERNOON. THESE STORMS HAVE PRODUCED WIND DAMAGE AND GUSTS TO 60 MILES AN HOUR OVER AREAS NORTHWEST OF ST LOUIS. AS THESE STORMS MOVE SOUTHEAST...PEOPLE IN THE ST LOUIS AREA AND ESPECIALLY PEOPLE WORKING AROUND THE RIVER FLOODING SHOULD PREPARE FOR POSSIBLE SEVERE WEATHER AND STRONG WIND. THESE STORMS SHOULD ARRIVE IN THE AT LOUIS METRO AREA BETWEEN 530 AND 630 PM. ALL PEOPLE ON BOATS OR LEVEES HELPING WITH FLOOD PROBLEMS SHOULD BE ADVISED OF THESE APPROACHING STORMS AND BE READY TO FIND SHELTER. SHEA
Special weather statement, Jul 31, 4:17 PM CDT, 1 hour 39 minutes before
MOZ012-312330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 415 PM CDT SAT JUL 31 1993 ...STRONG WINDS ARE HEADING TOWARDS ST LOUIS... A LINE OF STRONG TO SEVERE THUNDERSTORMS WAS MOVING OUT OF NORTHEAST MISSOURI AND TOWARDS ST LOUIS THIS AFTERNOON. THESE STORMS HAVE PRODUCED WIND DAMAGE AND GUSTS TO 60 MILES AN HOUR OVER AREAS NORTHWEST OF ST LOUIS. AS THESE STORMS MOVE SOUTHEAST...PEOPLE IN THE ST LOUIS AREA AND ESPECIALLY PEOPLE WORKING AROUND THE RIVER FLOODING SHOULD PREPARE FOR POSSIBLE SEVERE WEATHER AND STRONG WIND. THESE STORMS SHOULD ARRIVE IN THE AT LOUIS METRO AREA BETWEEN 530 AND 630 PM. ALL PEOPLE ON BOATS OR LEVEES HELPING WITH FLOOD PROBLEMS SHOULD BE ADVISED OF THESE APPROACHING STORMS AND BE READY TO FIND SHELTER. SHEA
Special weather statement, Jul 31, 5:43 PM CDT, 13 minutes before
MOZ012-010500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 543 PM CDT SAT JUL 31 1993 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MOST OF SOUTHEAST MISSOURI... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM FOR PARTS OF NORTHWEST MISSOURI... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM FOR MUCH OF NORTHEST AND CENTRAL MISSOURI... A LINE OF SEVERE THUNDERSTORMS THAT HAS MOVED INTO EAST CENTRAL MISSOURI IS EXPECTED TO CONTINUE MOVING SOUTHEAST AND SEVERE THUNDERSTORMS WILL BE POSSIBLE OVER MUCH OF SOUTHEAST MISSOURI THIS EVENING. TUCKER
Special weather statement, Jul 31, 5:51 PM CDT, 5 minutes before
MOZ012-010500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 543 PM CDT SAT JUL 31 1993 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MOST OF SOUTHEAST MISSOURI... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM FOR PARTS OF NORTHWEST MISSOURI... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM FOR MUCH OF NORTHEST AND CENTRAL MISSOURI... A LINE OF SEVERE THUNDERSTORMS THAT HAS MOVED INTO EAST CENTRAL MISSOURI IS EXPECTED TO CONTINUE MOVING SOUTHEAST AND SEVERE THUNDERSTORMS WILL BE POSSIBLE OVER MUCH OF SOUTHEAST MISSOURI THIS EVENING. TUCKER
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 4:02 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 43 min |
| Jul 31, 4:31 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 44 min |
| Jul 31, 4:47 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 43 min |
| Jul 31, 5:02 PM CDT | Severe Thunderstorm Warning | LSX | Jersey | 43 min |
| Jul 31, 5:15 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 45 min |
| Jul 31, 5:40 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Saint Clair | 50 min |
| Jul 31, 6:04 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Washington | 41 min |
| Jul 31, 6:13 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 47 min |
| Jul 31, 6:46 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Perry | 44 min |
Nearby
Tornado Warnings in Illinois, 1993Every tornado warning in 1993Tornadoes 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.