Alert archive / Missouri / Flash Flood Warnings in 1991
Flash Flood Warning 13, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 10, 1991, 5:33 AM CDT for Jefferson County, Saint Louis County, Missouri. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 10, 1991, 5:33 AM CDT (10:33 UTC)
- Expired
- Jul 10, 1991, 8:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Jefferson County, MO, Saint Louis County, MO
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 00:00Z, 10.6 hours before the alert went out and 220 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 101038 FFWSTL MOC099-183-189-510-101330- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 533 AM CDT WED JUL 10 1991 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 830 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MISSOURI ...JEFFERSON COUNTY...ST CHARLES COUNTY...ST LOUIS COUNTY AND THE INDEPENDENT CITY OF ...ST LOUIS CITY TWO TO FIVE INCHES OF RAIN HAS FALLEN AND SOME ROADS ARE WATER COVERED. IN WEST ST LOUIS COUNTY...A SMALL STREAM IS 10 FEET OUT OF ITS BANK AND HAS FLOODED ROADS. SOME CARS HAVE BEEN REPORTED STOCK AND REQUIRED TOWING. FLOODING WAS ALSO REPORTED IN PORTIONS OF SOUTH ST LOUIS AND JEFFERSON COUNTY. THE ENTIRE AREA HAS RECEIVED HEAVY RAIN WITH WELL OVER 4 INCHES IN SOME LOCATIONS. IN ADDITION...A NEW BATCH OF THUNDERSTORMS WAS MOVING TOWARD THE AREA FROM THE NORTHWEST. 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. TUCKER
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, 4:43 AM CDT | Flash Flood Warning | LSX | Franklin | 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, 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.