Alert archive / Missouri / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 89, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 30, 1993, 8:27 PM CDT for Shelby County, Missouri. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Jun 30, 1993, 8:27 PM CDT (01:27 UTC)
- Expired
- Jun 30, 1993, 9:30 PM CDT
- In force
- 63 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Shelby County, MO
The radar
The St Louis radar (KLSX), 171 km from the middle of the area, began a volume at 01:31 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
Topeka, KS (KTOP), launched 00:00Z, 1.5 hours before the alert went out and 319 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
- 3169 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1127 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 128 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 010129 SVRSTL MOC205-010230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 827 PM CDT WED JUN 30 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 930 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST MISSOURI ...SHELBY COUNTY AT 825 PM...NWS DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR CLARENCE...OR ABOUT 35 MILES SOUTHEAST OF KIRKSVILLE. THIS STORM WAS MOVING TO THE EAST AT 20 MPH. CLARENCE...LENTNER AND SHELBINA ARE IN THE PATH OF THIS STORM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. 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. 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, Jun 30, 6:00 PM CDT, 2 hours 27 minutes before
MOZ003-006-007-011-012-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 600 PM CDT WED JUN 30 1993 ...A TORNADO WATCH REMAINS IN EFFECT FOR WEST CENTRAL MISSOURI UNTIL 8 PM CDT... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHERN AND EAST CENTRAL MISSOURI UNTIL 10 PM CDT... A CLUSTER OF STORNG THUNDERSTORMS WAS OVER EAST CENTRAL MISSOURI... JUST NORTH OF THE ST LOUIS METRO AREA AT 6 PM. OTHER STRONG STORMS WERE OCCURING OVER NORTHWEST MISSOURI...NORTH OF ST JOSEPH AND EXTENDED INTO SOUTHWEST IOWA. THUNDERSTORMS WILL CONTINUE OVER NORTHERN MISSOURI THROUGH THE EVENING HOURS. THE ATMOSPHERE IS VERY UNSTABLE OVER NORTHERN MISSOURI...SO SOME OF THESE STORMS WILL BE SEVERE...PRODUCING DAMAGING WIND...HAIL... AND TORRENTIAL RAINS. ALSO...SEVERE THUNDERSTORMS ARE CAPABLE OF POSSIBLE OF SPAWNING TORNADOES. IN ADDITION TO THE SEVERE WEATHER THREAT...THE HEAVY RAIN FALL FROM THESE STORMS MAY CAUSE FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHERN MISSOURI FOR TONIGHT. PEOPLE ACROSS THE NORTHERN HALF OF THE STATE SHOULD CONTINUE TO MONITOR THE WEATHER SITUATION CLOSELY TONIGHT. BE READY TO MOVE TO A SAFE PLACE IF SEVERE WEATHER THREATENS YOUR AREA. FERRY
Special weather statement, Jun 30, 6:19 PM CDT, 2 hours 8 minutes before
MOZ003-006-007-011-012-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 600 PM CDT WED JUN 30 1993 ...A TORNADO WATCH REMAINS IN EFFECT FOR WEST CENTRAL MISSOURI UNTIL 8 PM CDT... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHERN AND EAST CENTRAL MISSOURI UNTIL 10 PM CDT... A CLUSTER OF STORNG THUNDERSTORMS WAS OVER EAST CENTRAL MISSOURI... JUST NORTH OF THE ST LOUIS METRO AREA AT 6 PM. OTHER STRONG STORMS WERE OCCURING OVER NORTHWEST MISSOURI...NORTH OF ST JOSEPH AND EXTENDED INTO SOUTHWEST IOWA. THUNDERSTORMS WILL CONTINUE OVER NORTHERN MISSOURI THROUGH THE EVENING HOURS. THE ATMOSPHERE IS VERY UNSTABLE OVER NORTHERN MISSOURI...SO SOME OF THESE STORMS WILL BE SEVERE...PRODUCING DAMAGING WIND...HAIL... AND TORRENTIAL RAINS. ALSO...SEVERE THUNDERSTORMS ARE CAPABLE OF POSSIBLE OF SPAWNING TORNADOES. IN ADDITION TO THE SEVERE WEATHER THREAT...THE HEAVY RAIN FALL FROM THESE STORMS MAY CAUSE FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHERN MISSOURI FOR TONIGHT. PEOPLE ACROSS THE NORTHERN HALF OF THE STATE SHOULD CONTINUE TO MONITOR THE WEATHER SITUATION CLOSELY TONIGHT. BE READY TO MOVE TO A SAFE PLACE IF SEVERE WEATHER THREATENS YOUR AREA. FERRY
Special weather statement, Jun 30, 6:45 PM CDT, 1 hour 42 minutes before
MOZ001-002-004-005-008-009-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 645 PM CDT WED JUN 30 1993 ...A TORNADO WATCH HAS BEEN ISSUED FOR WEST CENTRAL AND NORTHWEST MISSOUR EFFECTIVE UNTIL MIDNIGHT... THE NATIONAL WEATHER SEVICE HAS ISSUED A TORNADO WATCH FOR WEST CENTRAL AND NORTHWEST MISSOURI UNTIL MIDNIGHT. THIS WATCH REPLACES TORNADO WATCH 551 THAT COVERED WEST CENTRAL MISSOURI. ALSO THIS TORNADO WATCH RELPACES THAT PART OF SEVERE THUNDERSTORM WATCH 554 THAT COVERED NORTHWEST MISSOURI. SOME OF THE CITIES IN THIS TORNADO WATCH ARE ST JOSEPH...KANSAS CITY... CHILLICOTHE...MARYVILLE AND SEDALIA. STRONG THUNDERSTORMS WERE OCCURRING OVER NORTHWEST MISSOURI AND SOUTHWEST IOWA. THUNDERSTORMS WERE ALSO DEVELOPING OVER NORTHEAST KANSAS. STRONG THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS NORTHWEST THE REST OF THIS EVENING. SOME OF THESE STORMS WILL BE SEVERE AND MAY PRODUCE TORNADOES. A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR THE NORTHERN HALF OF MISSOURI. PEOPLE IN NORTHWEST MISSOURI SHOULD CONTINUE TO MONITOR THE LOCAL WEATHER CONDITIONS CLOSELY TONIGHT. BE READY TO MOVE TO A SAFE PLACE IF SEVERE WEATHER DEVELOPS IN YOUR AREA. FERRY
Special weather statement, Jun 30, 6:46 PM CDT, 1 hour 41 minutes before
MOZ001-002-004-005-008-009-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 645 PM CDT WED JUN 30 1993 ...A TORNADO WATCH HAS BEEN ISSUED FOR WEST CENTRAL AND NORTHWEST MISSOUR EFFECTIVE UNTIL MIDNIGHT... THE NATIONAL WEATHER SEVICE HAS ISSUED A TORNADO WATCH FOR WEST CENTRAL AND NORTHWEST MISSOURI UNTIL MIDNIGHT. THIS WATCH REPLACES TORNADO WATCH 551 THAT COVERED WEST CENTRAL MISSOURI. ALSO THIS TORNADO WATCH RELPACES THAT PART OF SEVERE THUNDERSTORM WATCH 554 THAT COVERED NORTHWEST MISSOURI. SOME OF THE CITIES IN THIS TORNADO WATCH ARE ST JOSEPH...KANSAS CITY... CHILLICOTHE...MARYVILLE AND SEDALIA. STRONG THUNDERSTORMS WERE OCCURRING OVER NORTHWEST MISSOURI AND SOUTHWEST IOWA. THUNDERSTORMS WERE ALSO DEVELOPING OVER NORTHEAST KANSAS. STRONG THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS NORTHWEST THE REST OF THIS EVENING. SOME OF THESE STORMS WILL BE SEVERE AND MAY PRODUCE TORNADOES. A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR THE NORTHERN HALF OF MISSOURI. PEOPLE IN NORTHWEST MISSOURI SHOULD CONTINUE TO MONITOR THE LOCAL WEATHER CONDITIONS CLOSELY TONIGHT. BE READY TO MOVE TO A SAFE PLACE IF SEVERE WEATHER DEVELOPS IN YOUR AREA. FERRY
Special weather statement, Jun 30, 7:10 PM CDT, 1 hour 17 minutes before
MOZ006-009-010-011-013-014-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 710 PM CDT WED JUN 30 1993 ...STRONG THUNDERSTORMS WERE DEVELOPING OVER NORTH CENTRAL MISSOURI... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF CENTRAL MISSOURI UNTIL 10 PM... AT 710 PM...A BROAD BAND OF QUICKLY DEVELOPING THUNDERSTORMS EXTENDED FROM 30 MILES WEST OF KIRKSVILLE...TO 20 MILES EAST OF ST LOUIS. THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER THUS FAR...BUT THESE STORMS WERE DEVELOPING VERY FAST AND WILL INTENSIFY OVER THE NEXT FEW HOURS. THE STORMS WERE MOVING EAST AT 25 MPH. LARGE HAIL...DAMAGING WINDS...BRIEF HEAVY RAINS...AND DANGEROUS LIGHTNING CAN BE EXPECTED WITH SOME OF THESE STORMS AS THEY MOVE ACROSS CENTRAL MISSOURI THIS EVENING. STAY TUNED TO WEATHER RADIO FOR FURTHER UPDATES OR POSSIBLE WARNINGS. REPORT SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. . PERLOW
Special weather statement, Jun 30, 7:16 PM CDT, 1 hour 11 minutes before
MOZ006-009-010-011-013-014-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 710 PM CDT WED JUN 30 1993 ...STRONG THUNDERSTORMS WERE DEVELOPING OVER NORTH CENTRAL MISSOURI... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF CENTRAL MISSOURI UNTIL 10 PM... AT 710 PM...A BROAD BAND OF QUICKLY DEVELOPING THUNDERSTORMS EXTENDED FROM 30 MILES WEST OF KIRKSVILLE...TO 20 MILES EAST OF ST LOUIS. THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER THUS FAR...BUT THESE STORMS WERE DEVELOPING VERY FAST AND WILL INTENSIFY OVER THE NEXT FEW HOURS. THE STORMS WERE MOVING EAST AT 25 MPH. LARGE HAIL...DAMAGING WINDS...BRIEF HEAVY RAINS...AND DANGEROUS LIGHTNING CAN BE EXPECTED WITH SOME OF THESE STORMS AS THEY MOVE ACROSS CENTRAL MISSOURI THIS EVENING. STAY TUNED TO WEATHER RADIO FOR FURTHER UPDATES OR POSSIBLE WARNINGS. REPORT SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER S$ERVICE. . PERLOW
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 7:20 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 34 min |
| Jun 30, 7:36 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 35 min |
| Jun 30, 7:46 PM CDT | Severe Thunderstorm Warning | LSX | Adair | 44 min |
| Jun 30, 8:17 PM CDT | Tornado Warning | LSX | Adair | 58 min |
| Jun 30, 8:37 PM CDT | Severe Thunderstorm Warning | LSX | Knox | 68 min |
| Jun 30, 9:07 PM CDT | Flash Flood Warning | LSX | Knox | 3 hr |
| Jun 30, 9:18 PM CDT | Severe Thunderstorm Warning | LSX | Adair | 57 min |
| Jun 30, 9:34 PM CDT | Flash Flood Warning | LSX | Shelby | 3 hr |
| Jun 30, 9:34 PM CDT | Severe Thunderstorm Warning | LSX | Shelby | 56 min |
| Jun 30, 10:00 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 60 min |
| Jun 30, 10:10 PM CDT | Tornado Warning | LSX | Marion, Ralls | 65 min |
| Jun 30, 10:39 PM CDT | Flash Flood Warning | LSX | Adair | 3 hr |
| Jun 30, 11:15 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 32 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; radar from the NEXRAD Level II archive.