Alert archive / Missouri / Flash Flood Warnings in 1993
Flash Flood Warning 37, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 9, 1993, 7:38 AM CDT for Saint Louis County, Missouri. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 9, 1993, 7:38 AM CDT (12:38 UTC)
- Expired
- Jul 9, 1993, 10:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Saint Louis County, MO
The radar
The St Louis radar (KLSX), 22 km from the middle of the area, began a volume at 12:37 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 0.6 hours before the alert went out and 232 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
- 1152 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1138 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -79 m²/s²
- 0-3 km storm-relative helicity
- -49 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 091240 FFWSTL MOC189-091545- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 738 AM CDT FRI JUL 9 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1045 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL MISSOURI ...SOUTHERN ST LOUIS COUNTY AT 725AM...THE ST. LOUIS COUNTY STATE EMERGENCY MANAGMENT AGENCY (SEMA) REPORTED THE SANDBAG LEVEE ALONG KEISER CREEK WAS SEEPING. COLLAPSE OF THIS LEVEE WOULD RESULT IN FLOODING FOR MILITARY ROAD AND LEMAY FERRY ROAD AND ALSO ALONG MILITARY ROAD TO RIVER DES PERES. NO FLOODING HAS OCCURRED YET...HOWEVER RESIDENTS IN THIS AREA HAVE BEEN EVACUATED. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. 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...OVN FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. MORSE
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, 1:45 AM CDT, 5 hours 53 minutes before
MOZ003-090845- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 145 AM CDT FRI JUL 9 1993 ...A TORNADO WATCH REMAINS IN EFFECT FOR A SMALL PART OF NORTHEAST MISSOURI UNTIL 400 AM... AT 135 AM...A LINE OF STRONG THUNDERSTORMS WAS MOVING ACROSS SOUTHERN IOWA AND NORTHERN MISSOURI. THE LEADING EDGE OF THIS LINE WAS ABOUT 40 MILES NORTHWEST OF KIRKSVILLE...MOVING EAST AT 40 MILES AN HOUR. THIS WOULD BRING THESE STORMS INTO THE KIRKSVILLE AND LANCASTER AREAS BETWEEN 230 AND 300 AM. THIS LINE OF STORMS HAS PRODUCED WIND DAMAGE AND GUSTS TO 60 MILES AN HOUR ACROSS PARTS OF IOWA BUT HAS WEAKENED ACROSS MISSOURI. WIND GUSTS OF 30 TO 40 MILES AN HOUR ARE STILL POSSIBLE...ALONG WITH VERY HEAVY RAIN AND LIGHTNING. IF YOU LIVE IN NORTHEAST MISSOURI...YOU CAN EXPECT THESE STRONG STORMS EARLY THIS MORNING. REMAIN INDOORS AND AWAY FROM WINDOWS WHEN STORMS APPROACH. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. SHEA
Special weather statement, Jul 9, 1:47 AM CDT, 5 hours 51 minutes before
MOZ003-090845- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 145 AM CDT FRI JUL 9 1993 ...A TORNADO WATCH REMAINS IN EFFECT FOR A SMALL PART OF NORTHEAST MISSOURI UNTIL 400 AM... AT 135 AM...A LINE OF STRONG THUNDERSTORMS WAS MOVING ACROSS SOUTHERN IOWA AND NORTHERN MISSOURI. THE LEADING EDGE OF THIS LINE WAS ABOUT 40 MILES NORTHWEST OF KIRKSVILLE...MOVING EAST AT 40 MILES AN HOUR. THIS WOULD BRING THESE STORMS INTO THE KIRKSVILLE AND LANCASTER AREAS BETWEEN 230 AND 300 AM. THIS LINE OF STORMS HAS PRODUCED WIND DAMAGE AND GUSTS TO 60 MILES AN HOUR ACROSS PARTS OF IOWA BUT HAS WEAKENED ACROSS MISSOURI. WIND GUSTS OF 30 TO 40 MILES AN HOUR ARE STILL POSSIBLE...ALONG WITH VERY HEAVY RAIN AND LIGHTNING. IF YOU LIVE IN NORTHEAST MISSOURI...YOU CAN EXPECT THESE STRONG STORMS EARLY THIS MORNING. REMAIN INDOORS AND AWAY FROM WINDOWS WHEN STORMS APPROACH. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. JSHEA
Special weather statement, Jul 9, 2:56 AM CDT, 4 hours 42 minutes before
MOZ001-002-003-090900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 256 AM CDT FRI JUL 9 1993 ...THE TORNADO WATCH FOR NORTHERN MISSOURI HAS BEEN CANCELLED... THE NATIONAL WEATHER SERVICE HAS CANCELLED THE TORNADO WATCH THAT WAS IN EFFECT FOR PARTS OF NORTHERN MISSOURI. A LINE OF THUNDERSTORMS THAT MOVED INTO THE STATE HAS WEAKENED CONSIDERABLY SO THERE IS NO LONGER AN IMMEDIATE THREAT FOR SEVERE WEATHER. LOCALLY HEAVY RAIN AND LIGHTNING IS POSSIBLE THOUGH. A FLASH FLOOD WATCREMAINS IN EFFECT FOR THE REMAINDER OF TONIGHT. SHEA
Special weather statement, Jul 9, 2:56 AM CDT, 4 hours 42 minutes before
MOZ001-002-003-090900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 256 AM CDT FRI JUL 9 1993 ...THE TORNADO WATCH FOR NORTHERN MISSOURI HAS BEEN CANCELLED... THE NATIONAL WEATHER SERVICE HAS CANCELLED THE TORNADO WATCH THAT WAS IN EFFECT FOR PARTS OF NORTHERN MISSOURI. A LINE OF THUNDERSTORMS THAT MOVED INTO THE STATE HAS WEAKENED CONSIDERABLY SO THERE IS NO LONGER AN IMMEDIATE THREAT FOR SEVERE WEATHER. LOCALLY HEAVY RAIN AND LIGHTNING IS POSSIBLE THOUGH. A FLASH FLOOD WATCREMAINS IN EFFECT FOR THE REMAINDER OF TONIGHT. SHEA
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; radar from the NEXRAD Level II archive.