Alert archive / Missouri / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 142, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 31, 1993, 5:53 PM CDT for Jefferson County, Missouri. It was in force for 52 min.
The area
The counties it named.
The facts
- Issued
- Jul 31, 1993, 5:53 PM CDT (22:53 UTC)
- Expired
- Jul 31, 1993, 6:45 PM CDT
- In force
- 52 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Jefferson County, MO
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.9 hours before the alert went out and 209 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 312254 SVRSTL MOC099-312345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 553 PM CDT SAT JUL 31 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 645 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL MISSOURI ...JEFFERSON COUNTY AT 550 PM...RADAR CONTINUED TO INDICATE A LINE OF SEVERE THUNDERSTORMS OVER EAST CENTRAL MISSOURI. THE LEADING EDGE OF THESE STORMS WAS STARTING TO MOVE INTO NORTHERN JEFFERSON COUNTY. THESE STORMS HAVE A HISTORY OF PRODUCING DAMAGING WIND GUSTS...TORRENTIAL RAINS AND BRIEF TORNADO TOUCHDOWNS. MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR. THE CITIES OF ARNOLD...IMPERIAL AND HOUSE SPRINGS ARE IN THE PATH OF THESE STORMS. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. 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. SHEA/RP
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, Jul 31, 3:13 PM CDT, 2 hours 40 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 38 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 38 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 36 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, 10 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, 2 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 30, 10:41 PM CDT | Flash Flood Warning | LSX | Saint Louis | 3 hr |
| Jul 31, 3:06 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Shelby | 54 min |
| Jul 31, 4:02 PM CDT | Severe Thunderstorm Warning | LSX | Ralls | 43 min |
| Jul 31, 4:08 PM CDT | Severe Thunderstorm Warning | LSX | Audrain | 37 min |
| Jul 31, 4:14 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 46 min |
| Jul 31, 4:31 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 44 min |
| Jul 31, 5:02 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Warren | 43 min |
| Jul 31, 5:15 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 45 min |
| Jul 31, 5:15 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 45 min |
| Jul 31, 5:20 PM CDT | Tornado Warning | LSX | Saint Charles, Saint Louis | 40 min |
| Jul 31, 5:32 PM CDT | Tornado Warning | LSX | City of Saint Louis | 28 min |
| Jul 31, 5:37 PM CDT | Flash Flood Warning | LSX | Saint Louis, City of Saint Louis | 2 hr |
| Jul 31, 6:30 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 45 min |
Nearby
Severe 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.