Alert archive / Missouri / Flash Flood Warnings in 1993
Flash Flood Warning 57, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Aug 11, 1993, 11:05 PM CDT for Franklin County, Missouri. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Aug 11, 1993, 11:05 PM CDT (04:05 UTC)
- Expired
- Aug 12, 1993, 3:00 AM CDT
- In force
- 4 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, 4.1 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 42 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 120410 FFWSTL MOC071-120800- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1105 PM CDT WED AUG 11 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 300 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL MISSOURI ...SOUTHERN FRANKLIN COUNTY AT 1100 PM...RADAR WAS DETECTING AN EAST TO WEST BAND OF THUNDERSTORMS OVER FRANKLIN COUNTY ABOUT 45 MILES SOUTHWEST OF ST. LOUIS. THIS BAND OF STORMS WAS MOVING SOUTHEAST INTO SOUTHERN FRANKLIN COUNTY. RAINFALL ESTIMATES INDICATE OVER TWO AND ONE HALF INCHES OF RAIN HAVE OCCURRED ACROSS PORTIONS OF WESTERN FRANKLIN COUNTY BETWEEN GERALD AND STRAIN BETWEEN 830 AND 1100 PM. THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER SOUTHERN PORTIONS OF THE COUNTY PRODUCING LOCALLY HEAVY RAINS AND FLOODING. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FL`OODS. 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. GKS
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, Aug 11, 10:05 PM CDT, 1 hour before
MOZ010-011-120400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 1005 PM CDT WED AUG 11 1993 ...A FLASH FLOOD WATCH IS IN EFFECT FOR A LARGE PART OF CENTRAL MISSOURI TONIGHT... AT 1000 PM CDT WEATHER RADAR IN COLUMBIA SHOWED A BAND OF STRONG THUNDERSTORMS PRODUCING VERY HEAVY SHOWERS...ABOUT 15 MILES WIDE AND SOUTH OF A LINE FROM HIGH POINT... 20 MILES SOUTHWEST OF JEFFERSON CITY TO 10 MILES NORTH OF JEFFERSON CITY TO 10 MILES WEST OF HERMANN. THESE THUNDERSTORMS WERE MOVING TO THE EAST AROUND 25 MILES AN HOUR AND WILL PRODUCE BRIEF DOWNPOURS ALONG WITH DANGEROUS CLOUD TO GROUND LIGHTNING AS THEY MOVE INTO GASCONADE AND SOUTHERN MONTGOMERY COUNTIES OF CENTRAL MISSOURI BY 1115 PM CDT. IF YOU OBSERVE SEVERE WEATHER...TAKE SHELTER IMMEDIATELY...THEN CALL THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. DO NOT ATTEMPT TO WALK OR DRIVE THROUGH WATER OVER ROADWAYS...IF YOU SEE RISING WATER...TAKE SHELTER ON HIGHER GROUND IMMEDIATELY. LB
Special weather statement, Aug 11, 10:17 PM CDT, 48 minutes before
MOZ010-011-120400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 1005 PM CDT WED AUG 11 1993 ...A FLASH FLOOD WATCH IS IN EFFECT FOR A LARGE PART OF CENTRAL MISSOURI TONIGHT... AT 1000 PM CDT WEATHER RADAR IN COLUMBIA SHOWED A BAND OF STRONG THUNDERSTORMS PRODUCING VERY HEAVY SHOWERS...ABOUT 15 MILES WIDE AND SOUTH OF A LINE FROM HIGH POINT... 20 MILES SOUTHWEST OF JEFFERSON CITY TO 10 MILES NORTH OF JEFFERSON CITY TO 10 MILES WEST OF HERMANN. THESE THUNDERSTORMS WERE MOVING TO THE EAST AROUND 25 MILES AN HOUR AND WILL PRODUCE BRIEF DOWNPOURS ALONG WITH DANGEROUS CLOUD TO GROUND LIGHTNING AS THEY MOVE INTO GASCONADE AND SOUTHERN MONTGOMERY COUNTIES OF CENTRAL MISSOURI BY 1115 PM CDT. IF YOU OBSERVE SEVERE WEATHER...TAKE SHELTER IMMEDIATELY...THEN CALL THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. DO NOT ATTEMPT TO WALK OR DRIVE THROUGH WATER OVER ROADWAYS...IF YOU SEE RISING WATER...TAKE SHELTER ON HIGHER GROUND IMMEDIATELY. LB
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 11:25 PM CDT | Flash Flood Warning | LSX | Saint Charles | 97 min |
| Aug 12, 4:40 AM CDT | Flash Flood Warning | LSX | Franklin | 4 hr |
| Aug 12, 6:33 AM CDT | Flash Flood Warning | LSX | Crawford | 3 hr |
| Aug 12, 6:48 AM CDT | Flash Flood Warning | LSX | Jefferson, Saint Louis | 2 hr |
Nearby
Flash Flood Warnings in Missouri, 1993Every flash flood warning in 1993
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.