Alert archive / Missouri / Flash Flood Warnings in 1993

Flash Flood Warning 45, NWS St. Louis, MO

July 18, 1993City of Saint Louis, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 18, 1993, 12:43 PM CDT for City of Saint Louis, Missouri. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 18, 1993, 12:43 PM CDT (17:43 UTC)
Expired
Jul 18, 1993, 3:45 PM CDT
In force
3 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

County City of Saint Louis, MO

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 5.7 hours before the alert went out and 217 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-pSkew-T log-p diagram, Paducah/Barkley, KY at 12:00Z on 1993-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3775 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Paducah/Barkley, KY at 12:00Z on 1993-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
3775 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
971 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSTL 181745
FFWSTL
MOC510-182045-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1243 PM CDT SUN JUL 18 1993
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  345 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI THE INDEPENDENT CITY OF
 
   ...SOUTHERN ST LOUIS CITY
 
AT 1230 PM...ST. LOUIS CITY EMERGENCY MANAGEMENT OFFICIALS INDICATED
THAT A LEVEE HAS BROKEN ALONG THE RIVER DES PERES...IN THE ALABAMA AND
MARCEAU ROAD AREA. OFFICIALS INDICATED THAT THE AFFECTED AREA WAS ALONG
GERMAINIA FROM MORGANFORD TO ALABAMA...ALONG MARCEAU FROM ALABAMA TO
WEBER ROAD...ALONG CARONDELET FROM I-55 TO WEBER ROAD...AND IN THE
COMSTOCK/WADDELL AREA.
 
EMERGENCY MANAGEMENT OFFICIALS ADVISE THAT RESIDENTS SHOULD LEAVE THIS
AREA IMMEDIATELY. WATER IS CONTINUING TO RISE IN THESE AREAS...AND
PEDESTRIAN AND VEHICULAR TRAFFIC IS PROHIBITED.
 
GOETSCH

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.