Alert archive / Missouri / Flash Flood Warnings in 1991
Flash Flood Warning 22, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 11, 1991, 7:31 PM CDT for 4 counties in Missouri. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 11, 1991, 7:31 PM CDT (00:31 UTC)
- Expired
- Jul 11, 1991, 10:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Marion County, MO, Monroe County, MO, Ralls County, MO, Shelby County, MO
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 0.5 hours before the alert went out and 338 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
- 1644 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1349 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 68 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 120035 FFWSTL MOC127-137-173-205-120330- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 731 PM CDT THU JUL 11 1991 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1030 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST MISSOURI ...MARION COUNTY...MONROE COUNTY...RALLS COUNTY ...SHELBY COUNTY AT 730 PM CDT...STRONG THUNDERSTORMS EXTENDED FROM HANNIABAL MISSOURI TO NEAR MACON MISSOURI...ABOUT 30 MILES SOUTH OF KIRKSVILLE. THESE STORMS HAVE A HISTORY OF PRODUCING TORRENTIAL RAINFALL AND ARE MOVING INTO AREAS WHICH RECIEVED BETWEEN 2 AND 5 INCHES OF RAINFALL FROM LAST NIGHTS STORMS. MOVEMENT OF THE STORMS WAS TO THE EAST AT 25 MPH. PEOPLE NEAR STREAMS SHOULD BE ESPECIALLY CAUTIOUS. IF YOU OBSERVE RAPIDLY RISING WATER MOVE TO HIGHER GROUND IMMEDIATELY. 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. GLASS
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 11, 7:12 PM CDT, 19 minutes before
MOZ011-012-120115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 708 PM CDT THU JUL 11 1991 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR NORTHEAST AND EAST CENTRAL MISSOURI. AT 700 PM CDT..A LINE OF VERY STRONG THUNDERSTORMS EXTENDED FROM HERMANN...ABOUT 50 MILES WEST OF ST. LOUIS TO 10 MILES NORTHWEST OF SULLIVAN...ABOUT 50 MILES SOUTHWEST OF ST. LOUIS. AT 705 PM CDT...A SPOTTER REPORTED 40 MILE AN HOUR WIND IN THE TOWN OF ROSEBUD IN EASTERN GASCONADE COUNTY. THIS AREA OF THUNDERSTORMS WILL MOVING OVER THE TOWNS OF MARTHAVILLE ...WASHINGTON AND UNION IN SOUTHERN WARREN AND FRANKLIN COUNTIES BETWEEN 720 AND 740 PM CDT. THESE STORMS WILL PRODUCE STRONG GUSTY SURFACE WINDS...HEAVY RAINFALL...AND DANGEROUS LIGHTNING. THE THUNDERSTORMS WERE MOVING TO THE EAST AT 30 MILES AN HOUR. PERSONS IN THE WATCH AREA SHOULD BE ALERT FOR FURTHER UPDATES AND POSSIBLE WARNINGS. PRZYBYLINSKI
Nearby
Flash Flood Warnings in Missouri, 1991Every 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.