Alert archive / Missouri / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 5, NWS St. Louis, MO

March 12, 1991Saint Charles County, Saint Louis County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Mar 12, 1991, 6:39 PM CST for Saint Charles County, Saint Louis County, Missouri. It was in force for 51 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 12, 1991, 6:39 PM CST (00:39 UTC)
Expired
Mar 12, 1991, 7:30 PM CST
In force
51 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Saint Charles County, MO, Saint Louis County, MO

What was reported inside it

TimeReportWhereRemark
Mar 12, 6:55 PM CSTHail 1.75St. Charles, MO
Mar 12, 7:15 PM CSTThunderstorm Wind 52St. 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 00:00Z, 0.7 hours before the alert went out and 245 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.

Skew-T log-pSkew-T log-p diagram, Paducah/Barkley, KY at 00:00Z on 1991-03-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Paducah/Barkley, KY at 00:00Z on 1991-03-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 288 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
13 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
573 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
288 m²/s²
0-3 km storm-relative helicity
321 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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, Mar 12, 1:14 PM CST, 5 hours 25 minutes before
MOZALL-122010-

SPECIAL WEATHER STATEMENT...CORRECTION
NATIONAL WEATHER SERVICE ST LOUIS MO
105 PM CST TUE MAR 12 1991

...STRONG THUNDERSTORMS MOVING OVER CENTRAL MISSOURI...

A TORNADO WATCH HAS BEEN ISSUED UNTIL 4 PM FOR A LARGE PART OF CENTRAL
MISSOURI INCLUDING THE CITIES OF ROLLA... COLUMBIA... SPRINGFIELD...
JEFFERSON CITY AND SEDALIA.

AT 1 PM...SEVERE THUNDERSTORMS HAD MOVED INTO CENTRAL MISSOURI.
THE LINE OF STORMS EXTENDED ROUGHLY FROM 30 MILES SOUTHWEST OF
KIRKSVILLE TO NEAR COLUMBIA TO JUST EAST OF LAKE OF THE OZARKS.
STORM MOVEMENT WAS NORTHEAST AT 40 MPH.

DURING THE PAST HOUR...SPOTTY REPORTS OF SMALL HAIL AND STRONG WINDS
HAVE BEEN RECEIVED.

...OUTLOOK FOR EAST MISSOURI INCLUDING ST. LOUIS...

THE CENTRAL MISSOURI THUNDERSTORMS WILL BECOME LIKELY ACROSS EAST
SECTIONS OF MISSOURI THIS AFTERNOON...GENERALLY AFTER 3 PM.  SEVERE
WEATHER WATCHES COULD BE EXTENDED EAST AT THAT TIME.

PEOPLE ACROSS MUCH OF MISSOURI SHOULD KEEP ALERT TO THIS RAPIDLY
CHANGING WEATHER SITUATION.  LISTEN FOR NATIONAL WEATHER SERVICE
EMERGENCY WEATHER INFORMATION...AND BE PREPARED TO SEEK SHELTER IF
CONDITIONS WARRENT.

GOETSCH
Special weather statement, Mar 12, 2:48 PM CST, 3 hours 51 minutes before
MOZALL-122200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
245 PM CST TUE MAR 12 1991

...STRONG THUNDERSTORMS ARE MOVING ACROSS CENTRAL MISSOURI...

A TORNADO WATCH IS IN EFFECT UNTIL 4 PM FOR A LARGE PART OF CENTRAL
MISSOURI INCLUDING THE CITIES OF ROLLA... COLUMBIA... AND JEFFERSON
CITY.

THE LINE OF THUNDERSTORMS EXTENDED FROM MARION COUNTY MISSOURI CLOSE
TO QUINCY...TO EAST OF COLUMBIA AND JEFFERSON CITY.  INDIVIDUAL
THUNDERSTORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR WHILE THE
ENTIRE LINE WAS SLOWLY MOVING EAST.

STRONG THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS NORTHEAST MISSOURI
BETWEEN 3 AND 5 PM.

...ST. LOUIS AREA...
THESE STORMS ARE STILL ABOUT 70 MILES WEST OF THE ST LOUIS METRO
AREA.  THIS WOULD BRING THEM CLOSE TO THE ST. LOUIS AREA DURING THE
EVENING RUSH HOUR.  CURRENT INDICATIONS SUGGEST THAT A SEVERE WEATHER
WATCH COULD BE ISSUED FOR FAR EAST MISSOURI..INCLUDING THE ST LOUIS
AREA BEFORE( 4 PM.

FELDT
Special weather statement, Mar 12, 3:40 PM CST, 2 hours 59 minutes before
MOZALL-122300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
350 PM CST TUE MAR 12 1991

...A TORNADO WATCH HAS BEEN POSTED FOR EAST MISSOURI...

A TORNADO WATCH NOW COVERS EAST CENTRAL AND SOUTHEAST
MISSOURI..INCLUDING ST. LOUIS AND CAPE GIRARDEAU.

TWO STRONG THUNDERSTORMS WERE LOCATED OVER EAST MISSOURI AS OF 345 PM.
ONE STORM WAS IN MONTGOMERY COUNTY...AND WILL MOVE INTO PIKE COUNTY
BEFORE 430 PM.  ANOTHER STRONG STORM WAS LOCATED NORTH OF THE COLUMBIA
AIRPORT.

BETWEEN 345 AND 445 PM...STRONG THUNDERSTORMS CAN BE EXPECTED ACROSS
PARTS OF NORTHEAST MISSOURI...INCLUDING PIKE COUNTY...PERHAPS CLOSE TO
BOWLING GREEN.

...OUTLOOK FOR ST. LOUIS...

NO SEVERE STORMS ARE EXPECTED IN THE ST LOUIS AREA BEFORE ABOUT 5
PM...CHANCE FOR SEVERE WEATHER SHOULD INCREASE AFTER 5 PM.

PEOPLE ACROSS THE EAST HALF OF MISSOURI SHOULD KEEP ALERT TO THIS
RAPIDLY CHANGING WEATHER SITUATION.  LISTEN FOR NATIONAL WEATHER
SERVICtE EMERGENCY WEATHER INFORMATION...AND BE PREPARED TO SEEK
SHELTER IF CONDITIONS WARRANT.

FELDT
Special weather statement, Mar 12, 4:37 PM CST, 2 hours 2 minutes before
MOZ007-010-011-012-018-130200-

SPECIAL WEATHER STATEMENT...CORRECTION...
NATIONAL WEATHER SERVICE ST LOUIS MO
435 PM CST TUE MAR 12 1991

...STRONG STORMS WERE MOVING ACROSS PIKE COUNTY MISSOURI...

AT 430 PM SEVERAL STRONG THUNDERSTORMS WERE MOVING ACROSS PARTS OF
PIKE...AND FAR NORTH LINCOLN COUNTIES IN MISSOURI.  THIS WAS THE AREA
NORTH OF ST. LOUIS AND SOUTH OF QUINCY.

THESE STORMS CONTAIN VERY HEAVY RAINFALL...STRONG GUSTY WINDS AND
PERHAPS HAIL.

BETWEEN 435 AND 515 PM...STRONG STORMS WILL CONTINUE IN PIKE COUNTY
CLOSE TO THE CITIES OF BOWLING GREEN AND LOUISIANA...AND MOVE INTO
PIKE COUNTY ILLINOIS.

...ST. LOUIS AREA...
THUNDERSTORMS REMAIN ABOUT 40 MILES WEST OF ST. LOUIS.  SHOWERS AND
THUNDERSTORMS SHOULD INCREASE ACROSS THE AREA AROUND 5 30PM.

FELDT
Special weather statement, Mar 12, 5:38 PM CST, 1 hour 1 minute before
MOZ010-010-130030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
530 PM CST TUE MAR 12 1991

...A TORNADO WATCH IS IN EFFECT FOR EAST CENTRAL MISSOURI UNTIL 9PM...

SCATTERED SHOWERS AND THUNDERSTORMS PERSISTED OVER A LARGE PORTION OF
CENTRAL AND EAST CENTRAL MISSOURI THIS AFTERNOON.  AT 530 PM THE
COLUMBIA WEATHER RADAR INDICATED THE HEAVIEST STORMS IN GASCONADE
COUNTY...30 MILES WEST OF JEFFERSON CITY.  THE STORMS WERE MOVING
EAST AT 25 MILES AN HOUR.

PEA AND MARBLE SIZED HAIL...DANGEROUS LIGHTNING...AND HEAVY
RAINSHOWERS HAVE BEEN REPORTED WITH THESE STORMS OVER EAST CENTRAL
MISSOURI.  PERSONS IN THAT REGION...ESPECIALLY IN THE COUNTIES OF
MONTGOMERY...GASCONADE...WAR REN AND FRANKLIN SHOULD BE ALERT TO
CHANGING WEATHER CONDITIONS AND STAY TUNED TO WEATHER RADIO FOR
FURTHER STATEMENTS.
PERLOW
Local storm report, Mar 12, 6:10 PM CST, 29 minutes before
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The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 12, 6:01 PM CSTSevere Thunderstorm WarningLSXLincoln, Saint Charles44 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.