Alert archive / Missouri / Flash Flood Warnings in 1996

Flash Flood Warning 8, NWS St. Louis, MO

April 28, 1996Saint Charles County, Missouri

NWS St. Louis, MO issued this flash flood warning at Apr 28, 1996, 5:50 PM CDT for Saint Charles County, Missouri. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 28, 1996, 5:50 PM CDT (22:50 UTC)
Expired
Apr 28, 1996, 10:45 PM CDT
In force
5 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

County Saint Charles County, MO

The radar

The St Louis radar (KLSX), 9 km from the middle of the area, began a volume at 22:54 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

Lincoln, IL (KILX), launched 12:00Z, 10.8 hours before the alert went out and 234 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, Lincoln, IL at 12:00Z on 1996-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 1996-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
898 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
313 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 282252
FFWSTL
MOC073-071-099-183-189-510-290345-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
550 PM CDT SUN APR 28 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MISSOURI
 
   ...GASCONADE COUNTY
 
IN EAST CENTRAL MISSOURI
 
   ...FRANKLIN COUNTY...JEFFERSON COUNTY...ST. CHARLES COUNTY
   ...ST. LOUIS COUNTY
 
  AND THE INDEPENDENT CITY OF
 
   ...ST. LOUIS CITY
 
AT 545 PM WEATHER RADAR ESTIMATES THAT MORE THAN ONE INCH OF RAIN HAS
FALLEN IN THE LAST HOUR BETWEEN OWENSVILLE AND MT STERLING EXTENDING
NORTHEAST TO BETWEEN NEW HAVEN AND UNION MISSOURI IN GASCONADE AND
FRANKLIN COUNTIES. THE STORM THAT PRODUCED THIS HEAVY RAIN HAS MOVED
INTO ST CHARLES...ST LOUIS...AND JEFFERSON COUNTIES.
 
THE GROUND HAS BEEN SATURATED FROM PREVIOUS RAINS...AND EMERGENCY
MANAGEMENT AGENCY IN UNION REPORTS AS MUCH AS TWO FEET OF WATER COVERING
SOME ROADS IN THE TOWN OF UNION.
 
CREEKS AND STREAMS WILL BE RISING RAPIDLY FROM THIS STORM AND FLOOD
PRONE AREAS MAY EXPERIENCE IMMINENT FLOODING.
 
IF FLASH FLOODING IS OBSERVED OR IMMINENT...MOVE QUICKLY TO
HIGHER GROUND. NEVER DRIVE INTO AN AREA WHERE WATER COVERS THE
ROAD...ESPECIALLY LOW-WATER BRIDGES.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODING. NEVER DRIVE OR WALK INTO FLOOD WATER.
0 
WDB
&

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 28, 4:40 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis50 min
Apr 28, 5:13 PM CDTSevere Thunderstorm WarningLSXFranklin32 min
Apr 28, 5:32 PM CDTSevere Thunderstorm WarningLSXJefferson, Saint Louis28 min
Apr 28, 5:32 PM CDTSevere Thunderstorm WarningLSXCity of Saint Louis28 min
Apr 28, 5:50 PM CDTFlash Flood WarningLSXGasconade5 hr
Apr 28, 5:50 PM CDTFlash Flood WarningLSXFranklin, Jefferson, Saint Louis5 hr
Apr 28, 5:50 PM CDTFlash Flood WarningLSXCity of Saint Louis5 hr

Nearby

Flash Flood Warnings in Missouri, 1996Every flash flood warning in 1996

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.