Alert archive / Missouri / Flash Flood Warnings in 1991

Flash Flood Warning 7, NWS St. Louis, MO

July 10, 1991Warren County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 10, 1991, 12:58 AM CDT for Warren County, Missouri. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 10, 1991, 12:58 AM CDT (05:58 UTC)
Expired: Jul 10, 1991, 4:00 AM CDT
In force: 3 hr
Issued by: NWS St. Louis, MO
Area: Whole counties

County Warren County, MO

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 6.0 hours before the alert went out and 287 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 100559
FFWSTL
MOC219-100900-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1258 AM CDT WED JUL 10 1991
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  400 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...WARREN COUNTY
 
THUNDERSTORMS WITH VERY HEAVY RAINS HAVE BEEN MOVING ACROSS WARREN
COUNTY DURING THE PAST SEVERAL HOURS. RAINFALL IN WARREN COUNTY HAS BEEN
ESTIMATED BETWEEN 2 AND 3 INCHES. THE WARREN COUNTY SHERIFFS OFFICE
REPORTED THAT SOME SMALL STREAMS WERE AT OR JUST OVER BANKFULL.
 
AT 1250 RADAR INDICATED THUNDERSTORMS CONTAINING VERY HEAVY RAINS
NORTHWEST OF WARREN COUNTY.  THESE STORMS WERE MOVING SOUTHEAST AT 25
MILES AN HOUR AND WILL BE MOVING THROUGH WARREN COUNTY BY 3 AM.  THE
RAINFALL FROM THESE STORMS WILL CAUSE ADDITIONAL FLOODING.
 
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
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

Special weather statement, Jul 9, 10:18 PM CDT, 2 hours 40 minutes before

MOZALL-100400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1005 PM CDT TUE JUL 9 1991

...SEVERE THUNDERSTORM WATCH HAS EXPIRED FOR ALL OF MISSOURI...
...A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHEAST MISSOURI UNTIL
   5 AM CDT...

AT 1010 PM CDT...NUMEROUS THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL
EXTENDED IN A NORTHWEST TO SOUTHEAST LINE FROM 40 MILES NORTH OF
COLUMBIA TO 35 MILES NORTHWEST OF ST LOUIS.  MOVEMENT OF THESE STORMS
WAS TO THE EAST SOUTHEAST AT 25 MPH.

WHILE THE THREAT OF SEVERE WEATHER HAS DIMINISHED ACROSS THE STATE...
THE THREAT OF HEAVY RAINFALL CONTINUES.  THUNDERSTORMS CAN OFTEN PRODUCE
HEAVY RAINFALL OVER A SHORT PERIOD OF TIME WHICH CAN RESULT IN RAPID
RISES OF STREAMS AND CREEKS AND FLOODING OF ROADWAYS AND LOW-LYING AREAS.
IF YOU OBSERVE FLOODING MOVE TO HIGHER GROUND IMMEDIATELY AND REPORT IT
TO YOUR LOCAL LAW ENFORCEMENT OFFICIAL FOR RELAY TO THE NATIONAL
WEATHER SERVICE.

GLASS

Special weather statement, Jul 9, 10:33 PM CDT, 2 hours 25 minutes before

MOZ006-010-100200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
1030 PM CDT TUE JUL 10 1991

...SCATTERED VERY STRONG THUNDERSTORMS CONTINUE OVER EAST AND NORTH
CENTRAL SECTIONS OF CENTRAL MISSOURI...

AT 1025 PM SHOWERS AND THUNDERSTORMS PERSISTED OVER NORTH AND EAST
CENTRAL MISSOURI NORTH OF A LINE FROM CHILLICOTHE TO MOBERLY TO ABOUT
20 MILES EAST OF COLUMBIA NEAR KINGDOM CITY TO OWENSVILLE WHICH IS
ABOUT 30 MILES NORTHEAST OF ROLLA. THE STRONGEST THUNDERSTORMS WERE
35 MILES SOUTHWEST OF KIRKSVILLE NEAR BROOKFIELD...AND ABOUT 20 TO 25
MILES NORTH OF COLUMBIA BETWEEN CENTRALIA AND CLARK. THESE STRONGER
THUNDERSTORMS WILL DROP HEAVY AMOUNTS OF RAIN...GUSTY WINDS AND
DANGEROUS LIGHTNING AS THEY MOVE SOUTHEAST AT 25 MILES AN HOUR.

THE BIGGER THREAT OVER NORTH AND EAST CENTRAL SECTIONS OF THE AREA
WILL BE FROM FLASH FLOODING RESULTING FROM HEAVY RAIN FALLING OVER
ALREADY SATURATED GROUND. PERSONS IN LOW LYING AREAS !OR IN AREAS
PRONE TO RAPIDLY RISING WATERS SHOULD BE ON THE LOOKOUT
FOR FLASH FLOODING...ESPECIALLY AT NIGHT WHEN IT IS HARDER
TO RECOGNIZE THE DANGERS OF FLASH FLOODS.

LA GREE

Local storm report, Jul 9, 10:50 PM CDT, 2 hours 8 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, 1 hour 15 minutes 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, 42 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, 24 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

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, 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, 4:43 AM CDT	Flash Flood Warning	LSX	Franklin	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.