Alert archive / Missouri / Flash Flood Warnings in 1991

Flash Flood Warning 12, NWS St. Louis, MO

July 10, 1991Franklin County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 10, 1991, 4:43 AM CDT for Franklin County, Missouri. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 10, 1991, 4:43 AM CDT (09:43 UTC)
Expired: Jul 10, 1991, 7:45 AM CDT
In force: 3 hr
Issued by: NWS St. Louis, MO
Area: Whole counties

County Franklin County, MO

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 9.7 hours before the alert went out and 257 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2067 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 959 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSTL 100954 COR
FFWSTL
MOC071-101245-

BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED TIME
NATIONAL WEATHER SERVICE ST LOUIS MO
443 AM CDT WED JUL 10 1991

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  745 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN EAST CENTRAL MISSOURI

   ...FRANKLIN COUNTY

AT 437 AM CDT...THUNDERSTORMS WITH VERY HEAVY RAINS WERE LOCATED 30
MILES SOUTHWEST OF ST LOUIS OVER SOUTHERN FRANKLIN COUNTY. THESE STORMS
WERE MOVING SOUTHEAST AT 30 MILES AN HOUR.

THUNDERSTORMS WITH HEAVY RAINS HAVE BEEN MOVING OVER FRANKLIN COUNTY FOR
THE PAST SEVERAL HOURS.   AS MUCH AS 3 INCHES OF RAIN MAY HAVE ALREADY
FALLEN OVER PARTS OF FRANKLIN COUNTY.  MORE THUNDERSTORMS WERE
DEVELOPING TO THE NORTHWEST AND WILL BE MOVING THROUGH DURING THE NEXT
SEVERAL HOURS.  ADDITIONAL HEAVY RAINFALL WILL CAUSE RAPID RISES IN
STREAMS...ALSO PONDING OF WATER IN LOW LYING AREAS WILL OCCUR.

PEOPLE IN MERAMAC STATE PARK IN SOUTHERN FRANKLIN COUNTY SHOULD REMAIN
ALERT AND BE PREPARED TO ACT QUICKLY IN THE EVENT OF FLOODING.


A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

FERRY/TUCKER

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jul 9, 10:50 PM CDT, 5 hours 53 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1050 PM CDT TUE JUL 9 1991

...STORM REPORT FOR FRIDAY AFTERNOON AND EVENING...JULY 9TH...

TIME (CDT)     COUNTY       EVENT

435 PM         RALLS CO     COUNTY SHERIFF ESTIMATED 60 MPH WINDS.
               MISSOURI

445 PM         RALLS CO     TREES DOWN NEAR NEW LONDON.
               MISSOURI

455 PM         RALLS CO     COUNTY SHERIFF REPORTED TREES 24 INCHES
               MISSOURI     IN DIAMETER BLOWN DOWN.  WATER 1 FOOT
                            DEEP ON SOME ROADS.

520 PM         PIKE CO      SHERIFF REPORTED DAMAGING WINDS...HAIL
               MISSOURI     AND HEAVY RAINS.  TREES AND POWER LINES
                            DOWN.

UNKNOWN        PIKE CO      MISSOURI STATE POLICE TROOP C REPORTED
               MISSOURI     WINDS OVER 55 MPH AND LOTS OF POWER LINES
                            DOWN NEAR HIGHWARY 54.

600 PM         PIKE CO      SHERIFF REPORTED SIGNIFICANT WIND WEST OF
               MISSOURI     BOWLING GREEN.  SOME MOBILE HOMES WERE
                            OVERTURNED AND WINDOWS WERE BLOWN OUT.
625 PM         LINCOLN CO   SHERIFF REPORTED A POSSIBLE FUNNEL CLOUD
               MISSOURI     SOUTHEAST OF NEW FLORENCE.

850 PM         ST LOUIS CO  HAM OPERATOR REPORTED 40-50 MPH WIND NEAR
               MISSOURI     GRAND AND MERIMAC IN SOUTH ST LOUIS COUNTY.

900 PM         ST LOUIS CO  LOCAL STREET FLOODING AT HANLEY AND BRENT-
               MISSOURI     WOOD AND AT MANCHESTER AND HANLEY REPORTED
                            BY HAM RADIO OPERATOR.

905 PM         ST LOUIS CO  HAM RADIO OPERATOR REPORTED SEVERAL POWER
               MISSOURI     LINES NEAR RICHMOND5 HEIGHTS AND MAPLEWOOD.

UNKNOWN        ST LOUIS CO  HAM RADIO OPERATOR REPORTED SEVERAL TREES
                            DOWN IN CHESTERFIELD

FERRY

Special weather statement, Jul 9, 11:43 PM CDT, 5 hours before

MOZ006-010-011-100530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
1140 PM CDT TUE JUL 10 1991

...STRONG THUNDERSTORMS CONTINUE OVER EASTERN AND NORTHERN CENTRAL
MISSOURI...

AT 1115 PM A LINE OF STORNG THUNDERSTORMS WAS IN CENTRAL MISSOURI FROM
30 MILES NORTHWEST OF COLUMBIA TO 35 MILES NORTHEAST OF COLUMBIA.  OTHER
STORMS WERE SCATTERED ALONG A LINE FROM 15 MILES EAST OF COLMBIA TO 50
MILES SOUTHEAST OF COLUMBIA...JUST NORTHEAST OF HERMANN.  ALL OF THE
THUNDERSTORMS WERE MOVING TO THE SOUTHEAST AT 25 MILES AN HOUR.

THE THUNDERSTORMS WILL PRODUCE STRONG GUSTY WINDS AND EXTREMELY HEAVY
RAIN AS THEY MOVE ACROSS MOBERLY...FULTON...KINGDOM CITY AND MONTGOMERY
CITY BY MID@NIGHT.  TAKE SHELTER INSIDE AND STAY AWAY FROM WINDOWS.
FLASH FLODDING IS ALSO POSSIBLE DUE TO THE STORMS MOVING OVER SATURATED
GROUND.  IF FLOODING IS OBSERVED MOVE QUICKLY TO HIGHER GROUND.
MORSE

Local storm report, Jul 10, 12:16 AM CDT, 4 hours 27 minutes before

LOCAL STORM REPORT...CORRECTED 6 PM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1050 PM CDT TUE JUL 9 1991

...STORM REPORT FOR FRIDAY AFTERNOON AND EVENING...JULY 9TH...

TIME (CDT)     COUNTY       EVENT

435 PM         RALLS CO     COUNTY SHERIFF ESTIMATED 60 MPH WINDS.
               MISSOURI

445 PM         RALLS CO     TREES DOWN NEAR NEW LONDON.
               MISSOURI

455 PM         RALLS CO     COUNTY SHERIFF REPORTED TREES 24 INCHES
               MISSOURI     IN DIAMETER BLOWN DOWN.  WATER 1 FOOT
                            DEEP ON SOME ROADS.

520 PM         PIKE CO      SHERIFF REPORTED DAMAGING WINDS...HAIL
               MISSOURI     AND HEAVY RAINS.  TREES AND POWER LINES
                            DOWN.

UNKNOWN        PIKE CO      MISSOURI STATE POLICE TROOP C REPORTED
               MISSOURI     WINDS OVER 55 MPH AND LOTS OF POWER LINES
                            DOWN NEAR HIGHWARY 54.

600 PM         PIKE CO      SHERIFF REPORTED SIGNIFICANT WIND DAMAGE
WEST           MISSOURI     WEST OF BOWLING GREEN.  SOME MOBILE HOMES
                            WERE OVERTURNED AND WINDOWS WERE BLOWN OUT.

625 PM         LINCOLN CO   SHERIFF REPORTED A POSSIBLE FUNNEL CLOUD
               MISSOURI     SOUTHEAST OF NEW FLORENCE.

850 PM         ST LOUIS CO  HAM OPERATOR REPORTED 40-50 MPH WIND NEAR
               MISSOURI     GRAND AND MERIMAC IN SOUTH ST LOUIS COUNTY.

900 PM         ST LOUIS CO  LOCAL STREET FLOODING AT HANLEY AND BRENT-
               MISSOURI     WOOD AND AT MANCHESTER AND HANLEY REPORTED
                            BY HAM RADIO OPERATOR.

905 PM         ST LOUIS CO  HAM RADIO OPERATOR REPORTED SEVERAL POWER
              c MISSOURI     LINES NEAR RICHMOND HEIGHTS AND MAPLEWOOD.

UNKNOWN        ST LOUIS CO  HAM RADIO OPERATOR REPORTED SEVERAL TREES
                            DOWN IN CHESTERFIELD

FERRY

Special weather statement, Jul 10, 12:34 AM CDT, 4 hours 9 minutes before

MOZ006-010-011-100615-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
1235 AM CDT WED JUL 10 1991

...STRONG THUNDERSTORMS CONTINUED IN CENTRAL MISSOURI...

AT 1215 AM A LINE OF STRONG THUNDERSTORMS WAS IN CENTRAL MISSOURI FROM
COLUMBIA TO 30 MILES NORTHEAST OF COLUMBIA...JUST NORTHEAST OF MEXICO.
THESE STORMS WERE MOVING TO THE SOUTHEAST AT 30 MILES AN HOUR.  SCATTERED
THUNDERSTORMS WERE IN EASTERN CENTRAL MISSOURI 25 MILES EAST OF COLUMBIA
AND 30 MILES SOUTHEAST OF JEFFESON CITY. THESE STORMS WERE MOVING
SOUTHEAST AT 25 MILES AN HOUR.

THE THUNDERSTORMS WILL PRODUCE STRONG GUSTY WINDS...EXTREMELY HEAVY
RAIN AND DANGEROUS LIGHTNING.  TAKE SHELTER INSIDE AND STAY AWAY FROMv
WINDOWS.  FLASH FLODDING IS ALSO POSSIBLE IN EASTER SECTIONS OF MID
MISSOURI.   IF FLOODING IS OBSERVED MOVE QUICKLY TO HIGHER GROUND.

MORSE

Special weather statement, Jul 10, 1:32 AM CDT, 3 hours 11 minutes before

MOZ006-010-011-100615-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
130 AM CDT WED JUL 10 1991

...STRONG THUNDERSTORMS CONTINUED IN CENTRAL MISSOURI...

AT 115 AM STRONG THUNDERSTORMS WERE SCATTERD FROM 25 MILES SOUTH OF
KIRKSVILLE TO ABOUT 30 MILES EAST OF COLUMBIA TO JUST NORTH OF JEFFERSON
CITY.  THE STORMS WERE MOVING TO THE SOUTHEAST AT 25 MILES AN HOUR.

EXPECT TORRENTIAL RAIN...STRONG GUSTY WINDS...AND DANGEROUS LIGHTNING
WITH THE STORMS.  TAKE SHELTER INSIDE AND AWAY FROM WINDOWS.  FLASH
FLOODING IS ALSO POSSIBLE IN THE NORTHERN AND EASTERN PARTS OF MID
MISSOURI AS THE THNDERSTORMS ARE MOVING OVER ALREADY SATURATED GROUND.
IF YOU LIVE IN A LOW LYING AREA OR AN AREA PRONE TO FLOODING BE ALERT TO
RAPIDLY CHANGING WEATHER COMDITIONS.  IF FLOODING IS OBSERVED MOVE QUICKLY
TO HIGHER GROUND.

MORSE

Special weather statement, Jul 10, 1:40 AM CDT, 3 hours 3 minutes before

MOZ006-010-011-100715-

SPECIAL WEATHER STATEMENT...CORRECTED FOR EXPIRATION TIME
NATIONAL WEATHER SERVICE COLUMBIA MO
130 AM CDT WED JUL 10 1991

...STRONG THUNDERSTORMS CONTINUED IN CENTRAL MISSOURI...

AT 115 AM STRONG THUNDERSTORMS WERE SCATTERD FROM 25 MILES SOUTH OF
KIRKSVILLE TO ABOUT 30 MILES EAST OF COLUMBIA TO JUST NORTH OF JEFFERSON
CITY.  THE STORMS WERE MOVING TO THE SOUTHEAST AT 25 MILES AN HOUR.

EXPECT TORRENTIAL RAIN...STRONG GUSTY WINDS...AND DANGEROUS LIGHTNING
WITH THE STORMS.  TAKE SHELTER INSIDE AND AWAY FROM WINDOWS.  FLASH
FLOODING IS ALSO POSSIBLE IN THE NORTHERN AND EASTERN PARTS OF MID
MISSOURI AS THE THNDERSTORMS ARE MOVING OVER ALREADY SATURATED GROUND.
IF YOU LIVE IN A LOW LYING AREA OR AN AREA PRONE TO FLOODING BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.  IF FLOODING IS OBSERVED MOVE QUICKLY
TO HIGHER GROUND.

MORSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 7:10 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles	35 min
Jul 9, 8:34 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	41 min
Jul 10, 12:58 AM CDT	Flash Flood Warning	LSX	Warren	3 hr
Jul 10, 1:03 AM CDT	Flash Flood Warning	LSX	Lincoln, Pike	3 hr
Jul 10, 1:41 AM CDT	Flash Flood Warning	LSX	City of Saint Louis	3 hr
Jul 10, 1:41 AM CDT	Flash Flood Warning	LSX	Saint Charles	3 hr
Jul 10, 1:41 AM CDT	Flash Flood Warning	LSX	Franklin, Jefferson, Saint Louis	3 hr
Jul 10, 5:33 AM CDT	Flash Flood Warning	LSX	Jefferson, Saint Louis	3 hr
Jul 10, 5:33 AM CDT	Flash Flood Warning	LSX	City of Saint Louis	3 hr
Jul 10, 5:33 AM CDT	Flash Flood Warning	LSX	Saint Charles	3 hr
Jul 10, 6:41 AM CDT	Flash Flood Warning	LSX	Lincoln	3 hr

Nearby

Flash Flood Warnings in Missouri, 1991 Every flash flood 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; the sounding from the Mesonet's radiosonde archive.