Alert archive / Missouri / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 92, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 30, 1993, 9:34 PM CDT for Shelby County, Missouri. It was in force for 56 min.
The area
The counties it named.
The facts
- Issued
- Jun 30, 1993, 9:34 PM CDT (02:34 UTC)
- Expired
- Jun 30, 1993, 10:30 PM CDT
- In force
- 56 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 02:34 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, 2.6 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
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, 6:45 PM CDT, 2 hours 49 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, 2 hours 48 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, 2 hours 24 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, 2 hours 18 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
Special weather statement, Jun 30, 9:10 PM CDT, 24 minutes before
MOZ006-009-010-011-013-014-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 910 PM CDT WED JUN 30 1993 ...SEVERE THUNDERSTORMS CONTINUE TO PLAGUE NORTH CENTRAL MISSOURI... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF CENTRAL MISSOURI UNTIL 10 PM... AT 910 PM...A BROAD BAND OF SCATTERED SHOWERS AND THUNDERSTORMS...SOME CARRYING LARGE HAIL...FUNNEL CLOUDS...AND DAMAGING WINDS CONTINUED TO RUMBLE ACROSS NORTH CENTRAL MISSOURI. THE STORMS WERE LOCATED NORTH OF A LINE THAT EXTENDED FROM JUST NORTH OF KANSAS CITY... TO NEAR MOBERLY... TO 30 MILES SOUTH OF THE QUINCY/HANNIBAL AREA. MOVEMENT OF THE STORMS WAS TO THE EAST AT 25 MPH. HEAVY DOWNPOURS ACOMMPANIED THESE STORMS AND WITH ADDITIONAL HEAVY RAINS ON THE WAY...LOCALIZED FLOODING WILL ALSO BECOME A PROBLEM. THE AREA OF SHOWERS WILL SLOWLY DRIFT SOUTHWARD...SO MOST OF THE NORTHERN THIRD OF THE STATE WILL BE AT RISK. THE AREA ALONG AND SOUTH OF INTERSTATE 70 REMAINED FREE OF RAIN AND WERE ENJOYING MOSTLY FAIR SKIES ALONG WITH WARM AND HUMID CONDITIONS. PERLOW
Special weather statement, Jun 30, 9:14 PM CDT, 20 minutes before
MOZ006-009-010-011-013-014-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 910 PM CDT WED JUN 30 1993 ...SEVERE THUNDERSTORMS CONTINUE TO PLAGUE NORTH CENTRAL MISSOURI... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF CENTRAL MISSOURI UNTIL 10 PM... AT 910 PM...A BROAD BAND OF SCATTERED SHOWERS AND THUNDERSTORMS...SOME CARRYING LARGE HAIL...FUNNEL CLOUDS...AND DAMAGING WINDS CONTINUED TO RUMBLE ACROSS NORTH CENTRAL MISSOURI. THE STORMS WERE LOCATED NORTH OF A LINE THAT EXTENDED FROM JUST NORTH OF KANSAS CITY... TO NEAR MOBERLY... TO 30 MILES SOUTH OF THE QUINCY/HANNIBAL AREA. MOVEMENT OF THE STORMS WAS TO THE EAST AT 25 MPH. HEAVY DOWNPOURS ACOMMPANIED THESE STORMS AND WITH ADDITIONAL HEAVY RAINS ON THE WAY...LOCALIZED FLOODING WILL ALSO BECOME A PROBLEM. THE AREA OF SHOWERS WILL SLOWLY DRIFT SOUTHWARD...SO MOST OF THE NORTHERN THIRD OF THE STATE WILL BE AT RISK. THE AREA ALONG AND SOUTH OF INTERSTATE 70 REMAINED FREE OF RAIN AND WERE ENJOYING MOSTLY FAIR SKIES ALONG WITH WARM AND HUMID CONDITIONS. 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, 8:27 PM CDT | Severe Thunderstorm Warning | LSX | Shelby | 63 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, 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.