Alert archive / Missouri / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 7, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 17, 1991, 2:55 PM CST for Franklin County, Saint Charles County, Saint Louis County, Missouri. It was in force for 50 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 17, 1991, 2:55 PM CST (20:55 UTC)
- Expired
- Mar 17, 1991, 3:45 PM CST
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Franklin County, MO, Saint Charles County, MO, Saint Louis County, MO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 17, 3:00 PM CST | Thunderstorm Wind 0 | Franklin, MO | |
| Mar 17, 3:20 PM CST | Thunderstorm Wind 52 | 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, 8.9 hours before the alert went out and 247 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
- 1176 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 251 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 172054 SVRSTL MOC071-183-189-172145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 255 PM CST SUN MAR 17 1991 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 345 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MISSOURI ...NORTHEASTERN FRANKLIN COUNTY...SOUTHERN ST CHARLES COUNTY ...ST LOUIS COUNTY AT 245 PM CST RADAR INDICATED A SEVERE THUNDERSTORM IN EXTREME NORTHERN FRANKLIN COUNTY NEAR WASHINGTON MISSOURI. THIS STORM WAS MOVING TO THE EAST NORTHEAST AT 30 MPH. COMMUNITIES OF CHESTERFIELD MISSOURI AND BABLER STATE PARK WILL BE IN CLOSE PROXIMITY TO THIS STORM. 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.
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 17, 12:22 PM CST, 2 hours 33 minutes before
MOZ010-171915- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 1220 PM CST SUN MAR 17 1991 ...A NARROW BAND OF STRONG THUNDERSTORMS MOVING ACROSS CENTRAL MISSOURI... AT 1220 PM A NARROW BAND OF STRONG THUNDERSTORMS 5 MILES WIDE EXTENDED FROM 5 MILES NORTHEAST OF THE CITY OF COLUMBIA TO JEFFERSON CITY MOVING NORTHEAST AT 35 MILES AN HOUR. THESE THUNDERSTORMS PRODUCED PEA SIZED HAIL JUST WEST OF COLUMBIA AT NOON...AND BRIEF GUSTY WINDS OF 40 TO 45 MILES AN HOUR. A SHORT PERIOD OF VERY HEAVY RAIN ALSO ACCOMPANIED THESE THUNDERSTORM AS THEY MOVED NORTHEAST. THE THUNDERSTORMS WILL MOVE THROUGH CALLAWAY AND AUDRAIN COUNTIES BETWEEN 1220 AND 100 PM THIS AFTERNOON. LA GREE ]
Local storm report, Mar 17, 2:20 PM CST, 35 minutes before
MO010-172030-
PRELIMINARY STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA MO
215 PM CST SUN MAR 17 1991
TIME COUNTY REPORT
1150 AM BOONE PEA SIZED HAIL 5 MILES WEST OF COLUMBIA.
1250 PM CALLAWAY GOLF BALL SIZED HAIL REPORTED AT GASPERS TRUCK
PLAZA IN KINGDOM CITY.
100 PM AUDRAIN PEA TO MARBLE SIZED HAIL NEAR MEXICO.
120 PM MONTGOMERY 1/2 TO 3/4 INCH HAIL COMPLETELY COVERED THE
GROUND IN AND AROUND MONTGOMERY CITY.
147 PM MONTGOMERY 3/4 INCH HAIL PELTING HIGH HILL. POWER LINES
DOWN.
LA GREESpecial weather statement, Mar 17, 2:34 PM CST, 21 minutes before
MOZ010-011-012-013-014-017-018-171000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 225 PM CST SUN MAR 17 1991 ...THUNDERSTORMS ARE DEVELOPING JUST WEST OF ST LOUIS... THUNDERSTORMS HAVE BEEN DEVELOPING SINCE 130 PM TO THE WEST OF ST LOUIS IN WESTERN WARREN AND NORTHWEST FRANKLIN COUNTIES. AT 225 PM THE HEAVIEST STORMS WERE JUST WEET OF WARRENTON AND ABOUT 10 MILES WEST OF WASHINGTON MISSOURI. SIMILAR STORMS FURTHER NORTH AND WEST SPEWED SMALL HAIL WHICH COVERED THE GROUND. THESE STORMS WILL BE MOVING TO THE EAST NORTHEAST AT 30 MPH. PERSONS IN THE COMMUNITIES OF WENTZVILLE AND LAKE ST LOUIS ALONG INTERSTATE 70 WILL BE IN THE PATH OF THE NORTHERN STORM...WHILE THE COMMUNITIES OF WASHINGTON AND AUGUSTA..AS WELL AS POSSIBLY BABLER STATE PARK WILL BE NEAREST THE SOUTHERN STORM. KEEP ABREAST OF LATEST WEATHER DEVELOPMENTS IN YOUR AREA AND STAY TUNED FOR LATER STATEMENTS OR POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. PEDIGO
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 1:42 PM CST | Severe Thunderstorm Warning | LSX | Lincoln | 63 min |
| Mar 17, 4:20 PM CST | Severe Thunderstorm Warning | LSX | Jefferson | 25 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.