Alert archive / Missouri / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 13, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 21, 1991, 2:57 PM CST for Saint Louis County, City of Saint Louis, Missouri. It was in force for 33 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 21, 1991, 2:57 PM CST (20:57 UTC)
- Expired
- Mar 21, 1991, 3:30 PM CST
- In force
- 33 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 21, 3:03 PM CST | Hail 1.75 | St. Louis, MO | |
| Mar 21, 3:15 PM CST | Hail 1.75 | St. Louis, MO |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 9.0 hours before the alert went out and 225 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
- 978 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 362 m²/s²
- 0-3 km storm-relative helicity
- 384 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 212055 SVRSTL MOC189-510-212130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 257 PM CST THU MAR 21 1991 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 330 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MISSOURI ...ST LOUIS COUNTY AND THE INDEPENDENT CITY OF ...ST LOUIS CITY AT 255 PM...RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES SOUTHWEST OF ST LOUIS...OR ABOUT 5 MILES SOUTHEAST OF PACIFIC. THE STORM WAS MOVING NORTHEAST AT 45 MPH. TUCKER WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
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, Mar 21, 2:09 PM CST, 48 minutes before
MOZALL-222210- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 205 PM CST THU MAR 21 1991 ...TORNADO WATCH IN EFFECT UNTIL 7 PM FOR MOST OF SOUTHWEST MISSOURI... SEVERE THUNDERSTORMS DEVELOPED OVER PORTIONS OF SOUTHWEST MISSOURI DURING THE EARLY AFTERNOON ON THURSDAY. A NUMBER OF SEVERE THUNDERSTORM WARNINGS WERE ISSUED FOR THAT AREA. AT 2 PM ON WEATHER RADAR...STRONG THUNDERSTORMS WERE ALSO LOCATED 20 MILES SOUTHEAST OF ROLLA...NEAR COOK STATION...IN SOUTHWEST CRAWFORD COUNTY. THIS STORM WAS MOVING TO THE NORTHEAST AT 40 MPH AND WILL MOVE INTO THE KEYSVILLE AND CHERRYVILLE AREAS BY 220 PM. DURING THE REST OF THE AFTERNOON...SEVERE THUNDERSTORMS WILL REMAIN POSSIBLE OVER ALL OF THE SOUTHERN HALF OF MISSOURI. A TORNADO WATCH CONTINUES FOR SOUTHWEST MISSOURI UNTIL 7 PM. TORNADOES CAN OFTEN OCCUR WITH NO ADVANCED WARNING. REMAIN ALERT TO RAPIDLY CHANGING WEATHER SITUATIONS AND STAY TUNED TO NOAA WEATHER RADIO OR LOCAL TV BROADCASTS FOR LATER STATEMENTS OR WARNINGS. GOETSCH
Special weather statement, Mar 21, 2:35 PM CST, 22 minutes before
MOZ013-014-212130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 230 PM CDT THU APR 21 1991 ...A TORNADO WATCH IS IN EFFECT FOR SOUTHERN AND EASTERN MISSOURI UNTIL 800 PM... AT 230 PM THE COLUMBIA WEATHER RADAR INDICATED A DANGEROUS STORM MOVING ACROSS THE LAKE OF THE OZARK...40 SOUTHWEST OF JEFFERSON CITY. THE STORM WAS MOVING NORTHEAST AT 40 MILES AN HOUR. OTHER THUNDERSTORMS WERE LOCATED 30 MILES SOUTH OF SEDALIA AND 50 EAST OF ROLLA. PERSONS IN WESTERN MORGAN AND NORTHERN MILLER COUNTY SHOULD BE ON THE ALERT FOR CHANGING WEATHER CONDITIONS. HAIL...BRIEF HEAVY SHOWERS... STRONG GUSTY WINDS...AND DANGEROUS LIGHTNING WILL ACCOMPANY THESE STORMS AS THEY MOVE THROUGH CENTRAL MISSOURI. A LAKE WIND ADVISORY IS ALSO IN EFFECT. PERLOW
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 2:23 PM CST | Severe Thunderstorm Warning | LSX | Washington | 52 min |
| Mar 21, 2:43 PM CST | Severe Thunderstorm Warning | LSX | Saint Francois | 47 min |
| Mar 21, 2:51 PM CST | Severe Thunderstorm Warning | LSX | Franklin, Jefferson | 54 min |
| Mar 21, 3:08 PM CST | Severe Thunderstorm Warning | LSX | Sainte Genevieve, Saint Francois | 52 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1991Every severe thunderstorm warning in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.