Alert archive / Missouri / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 99, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 6, 1993, 4:07 PM CDT for Washington County, Missouri. It was in force for 53 min.
The area
The counties it named.
The facts
- Issued
- Jul 6, 1993, 4:07 PM CDT (21:07 UTC)
- Expired
- Jul 6, 1993, 5:00 PM CDT
- In force
- 53 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Washington County, MO
The radar
The St Louis radar (KLSX), 84 km from the middle of the area, began a volume at 21:10 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, 9.1 hours before the alert went out and 216 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
- 0 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 92 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 062108 SVRSTL MOC055-221-062200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 407 PM CDT TUE JUL 6 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MISSOURI ...SOUTHEASTERN CRAWFORD COUNTY...SOUTHERN WASHINGTON COUNTY AT 408 PM...RADAR INDICATED A CLUSTER OF SEVERE THUNDERSTORMS OVER SOUTHERN CRAWFORD COUNTY...ABOUT 25 MILES EAST OF ROLLA. THIS STORM WAS MOVING EAST AT 30 MILES AN HOUR AND WILL MOVE INTO SOUTHERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI BY 430 PM. AT 405 PM...NUMEROUS TREES WERE KNOCKED DOWN IN SOUTHERN CRAWFORD COUNTY DUE TO THUNDERSTORM WIND GUSTS. THESE WINDS WILL LIKELY CAUSE MORE DAMAGE AS THEY MOVE EAST. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVYq 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
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 6, 2:35 PM CDT, 1 hour 32 minutes before
MOZ003-007-011-062030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 235 PM CDT TUE JUL 6 1993 ...STRONG WINDS WERE MOVING THROUGH PARTS OF NORTHEAST MISSOURI... AT 230 PM...RADAR INDICATED A LARGE AREA OF RAIN SHOWERS FROM NORTHEAST MISSOURI EXTENDING INTO CENTRAL MISSOURI...WITH SOME STRONGER THUNDERSTORMS SOUTHWEST OF ST LOUIS. ALL OF THIS RAIN WAS MOVING EAST AT 35 MILES AN HOUR. THERE HAVE BEEN SEVERAL REPORTS OF STRONG WIND IN PARTS OF NORTHEAST AND NORTH CENTRAL MISSOURI THIS AFTERNOON. THIS WIND WAS BEING PRODUCED FROM THESE SHOWERS AS THEY MOVE THROUGH THE AREA...ALTHOUGH GUSTS ARE NOT EXPECTED TO BE SEVERE. ALONG WITH HIGH WIND GUSTS...PERIODS OF HEAVY RAIN AND POSSIBLE LIGHTNING ARE EXPECTED. PEOPLE WITH OUTDOOR PLANS THIS AFTERNOON SHOULD BE ALERT FOR STRONG WIND GUSTS. MOVE INDOORS IF THREATENING WEATHER APPROACHES. PEOPLE OUTDOORS WORKING IN FLOOD AREAS SHOULD ALSO BE ALERT FOR WIND GUSTS AND STAY AWAY FROM THE RIVER BANKS. LISTEN TO NOAA WEATHER RADIO FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS. SHEA
Special weather statement, Jul 6, 2:37 PM CDT, 1 hour 30 minutes before
MOZ003-007-011-062030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 235 PM CDT TUE JUL 6 1993 ...STRONG WINDS WERE MOVING THROUGH PARTS OF NORTHEAST MISSOURI... AT 230 PM...RADAR INDICATED A LARGE AREA OF RAIN SHOWERS FROM NORTHEAST MISSOURI EXTENDING INTO CENTRAL MISSOURI...WITH SOME STRONGER THUNDERSTORMS SOUTHWEST OF ST LOUIS. ALL OF THIS RAIN WAS MOVING EAST AT 35 MILES AN HOUR. THERE HAVE BEEN SEVERAL REPORTS OF STRONG WIND IN PARTS OF NORTHEAST AND NORTH CENTRAL MISSOURI THIS AFTERNOON. THIS WIND WAS BEING PRODUCED FROM THESE SHOWERS AS THEY MOVE THROUGH THE AREA...ALTHOUGH GUSTS ARE NOT EXPECTED TO BE SEVERE. ALONG WITH HIGH WIND GUSTS...PERIODS OF HEAVY RAIN AND POSSIBLE LIGHTNING ARE EXPECTED. PEOPLE WITH OUTDOOR PLANS THIS AFTERNOON SHOULD BE ALERT FOR STRONG WIND GUSTS. MOVE INDOORS IF THREATENING WEATHER APPROACHES. PEOPLE OUTDOORS WORKING IN FLOOD AREAS SHOULD ALSO BE ALERT FOR WIND GUSTS AND STAY AWAY FROM THE RIVER BANKS. LISTEN TO NOAA WEATHER RADIO FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS. SHEA
Special weather statement, Jul 6, 3:07 PM CDT, 1 hour before
MOZ017-062115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 307 PM CDT TUE JUL 6 1993 ...THUNDERSTORMS WERE MOVING THROUGH THE ROLLA AREA... AT 300 PM...AN AREA OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM 30 MILES WEST OF ST LOUIS TO NEAR ROLLA IN EAST CENTRAL MISSOURI. THESE STORMS WERE MOVING EAST AT 35 MILES AN HOUR WITH THE HEAVIEST RAIN JUST SOUTHWEST OF ROLLA. IF YOU LIVE IN PHELPS COUNTY YOU CAN EXPECT STRONG THUNDERSTORMS THROUGH 400 PM WITH LOCALLY HEAVY RAIN AND FREQUENT LIGHTNING. GUSTY WINDS OF 35 TO 40 MILES AN HOUR HAVE BEEN REPORTED IN THE ROLLA AREA FROM THE MISSOURI STATE HIGHWAY PATROL. IF A SEVERE THUNDERSTORM WARNING IS ISSUED...STAY INDOORS AND AWAY FROM WINDOWS. HEAVY RAIN CAN CAUSE FLASH FLOODING AS WELL SO MOTORISTS SHOULD USE CAUTION WHEN CROSSING LOW WATER BRIDGES. LISTEN TO NOAA WEATHER RADIO FOR FURTHER DETAILS AND POSSIBLE WARNINGS. SHEA
Special weather statement, Jul 6, 3:09 PM CDT, 58 minutes before
MOZ017-062115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 307 PM CDT TUE JUL 6 1993 ...THUNDERSTORMS WERE MOVING THROUGH THE ROLLA AREA... AT 300 PM...AN AREA OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM 30 MILES WEST OF ST LOUIS TO NEAR ROLLA IN EAST CENTRAL MISSOURI. THESE STORMS WERE MOVING EAST AT 35 MILES AN HOUR WITH THE HEAVIEST RAIN JUST SOUTHWEST OF ROLLA. IF YOU LIVE IN PHELPS COUNTY YOU CAN EXPECT STRONG THUNDERSTORMS THROUGH 400 PM WITH LOCALLY HEAVY RAIN AND FREQUENT LIGHTNING. GUSTY WINDS OF 35 TO 40 MILES AN HOUR HAVE BEEN REPORTED IN THE ROLLA AREA FROM THE MISSOURI STATE HIGHWAY PATROL. IF A SEVERE THUNDERSTORM WARNING IS ISSUED...STAY INDOORS AND AWAY FROM WINDOWS. HEAVY RAIN CAN CAUSE FLASH FLOODING AS WELL SO MOTORISTS SHOULD USE CAUTION WHEN CROSSING LOW WATER BRIDGES. LISTEN TO NOAA WEATHER RADIO FOR FURTHER DETAILS AND POSSIBLE WARNINGS. SHEA
Special weather statement, Jul 6, 3:59 PM CDT, 8 minutes before
MOZALL-062200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 359 PM CDT TUE JUL 6 1993 ...SEVERE THUNDERSTORM WATCH NUMBER 602 HAS BEEN ISSUED FOR PORTIONS OF EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 9 PM... AT 350 PM...NWS DOPPLER RADAR SHOWED AN AREA OF STRONG THUNDERSTORMS EXTENDING FROM THE ST. LOUIS AREA SOUTHWEST TO 25 MILES EAST OF ROLLA. STORM MOVEMENT WAS TO THE EAST AT 25 MPH. A SEVERE THUNDERSTORM WATCH WAS NOW IN EFFECT FOR PORTIONS OF EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 9 PM. IF ANY OF THESE STORMS MOVE INTO YOUR AREA...MOVE TO SHELTER. STAY TUNED TO NOAA WEATHER RADOR OR LOCAL TV BROADCASTS FOR THE LATEST STATEMENTS. GOETSCH
Special weather statement, Jul 6, 4:01 PM CDT, 6 minutes before
MOZALL-062200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 359 PM CDT TUE JUL 6 1993 ...SEVERE THUNDERSTORM WATCH NUMBER 602 HAS BEEN ISSUED FOR PORTIONS OF EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 9 PM... AT 350 PM...NWS DOPPLER RADAR SHOWED AN AREA OF STRONG THUNDERSTORMS EXTENDING FROM THE ST. LOUIS AREA SOUTHWEST TO 25 MILES EAST OF ROLLA. STORM MOVEMENT WAS TO THE EAST AT 25 MPH. A SEVERE THUNDERSTORM WATCH WAS NOWW IN EFFECT FOR PORTIONS OF EAST CENTRAL AND SOUTHEAST MISSOURI UNTIL 9 PM. IF ANY OF THESE STORMS MOVE INTO YOUR AREA...MOVE TO SHELTER. STAY TUNED TO NOAA WEATHER RADOR OR LOCAL TV BROADCASTS FOR THE LATEST STATEMENTS. GOETSCH
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 3:18 PM CDT | Severe Thunderstorm Warning | LSX | Phelps | 25 min |
| Jul 6, 4:07 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 30 min |
| Jul 6, 4:42 PM CDT | Severe Thunderstorm Warning | LSX | Saint Francois | 48 min |
| Jul 6, 5:05 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 40 min |
| Jul 6, 6:47 PM CDT | Flash Flood Warning | LSX | Franklin | 4 hr |
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; radar from the NEXRAD Level II archive.