Alert archive / Illinois / Flash Flood Warnings in 1992

Flash Flood Warning 5, NWS St. Louis, MO

July 4, 1992Saint Clair County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jul 4, 1992, 8:10 PM CDT for Saint Clair County, Illinois. It was in force for 117 min.

The area

The counties it named.

The facts

Issued
Jul 4, 1992, 8:10 PM CDT (01:10 UTC)
Expired
Jul 4, 1992, 10:07 PM CDT
In force
117 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Saint Clair County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 1.2 hours before the alert went out and 189 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 00:00Z on 1992-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 742 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 00:00Z on 1992-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 square meters per square second.193958Sfc1 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
742 J/kg
Mixed-layer CIN
-94 J/kg
Mixed-layer LCL
1248 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
188 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 050112
FFWSTL
ILC163-050400-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
810 PM CDT SAT JUL 4 1992
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 11 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST ILLINOIS
 
   ...SOUTHERN ST CLAIR COUNTY
 
AT 810 PM...WATER WAS 4 TO 5 FEET DEEP AND SOME CARS WERE FLOODED IN THE
WEST END OF FREEBURG ILLINOIS. SEVERAL BASEMENTS WERE ALSO FLOODED. THIS
TORNADIC THUNDERSTORMS WAS MOVING SOUTHEAST AT 5 TO 10 MPH AND WAS ALSO
PRODUCING VERY HEAVY RAIN.
 
THE STORM SHOULD REMAIN IN SOUTHERN ST CLAIR COUNTY UNTIL ROUGHLY 830 PM
BUT FLASH FLOODING IS LIKELY TO CONTINUE THROUGH 10 OR 11 PM.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  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.
 
TUCKER

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 4, 2:43 PM CDT, 5 hours 27 minutes before
MOZ017-042045-

SPECIAL WEATHER STATEMENT...CORRECTED FOR HEADLINE...
NATIONAL WEATHER SERVICE ST LOUIS MO
239 PM CDT SAT JUL 4 1992

...A STRONG THUNDERSTORM WAS INDICATED IN DENT COUNTY...MISSOURI.

AT 227 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
THUNDERSTORM 25 MILES SOUTH OF ROLLA.  THIS STORM WAS MOVING EAST AT 20
MPH.  RADAR INDICATED THAT THIS STORM CONTAINED HAIL AND VERY HEAVY
RAIN.  THE STORM WILL MOVE THROUGH DENT COUNTY AND WILL PASS BETWEEN
SALEM AND GLADDEN BETWEEN 245 AND 315 PM.

STRONG GUSTY WIND...BRIEF HEAVY RAIN...INTENSE LIGHTNING AND SMALL HAIL
ARE LIKELY WITH THIS STORM.  IF YOU ARE OUTSIDE...YOU SHOULD SEEK
SHELTER INSIDE.  DO NOT SEEK SHELTER NEAR A SINGLE TREE OR OTHER TALL
OBJECTS.  REPORT ANY SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT
OFFICE TO BE RELAYED TO THE NATIONAL WEATHER SERVICE.

MUCH OF SOUTHERN AND WESTERN MISSOURI REMAINS IN A SEVERE THUNDERSTORM
WATCH UNTIL 8 PM.2

TUCKER
Special weather statement, Jul 4, 3:27 PM CDT, 4 hours 43 minutes before
MOZ013-014-042100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
325 PM CDT SAT JUL 4 1992

...STRONG THUNDERSTORMS ENTERING WESTERN CAMDEN COUNTY...
...SEVERE THUNDERSTORM WATCH FOR SOUTH CENTRAL MISSOURI UNTIL
800PM CDT...

AT 320 PM AN INTENSE THUNDERSTORM WAS OVER WESTERN CAMDEN COUNTY MOVING
NORTHEAST AT 20 MILES AN HOUR. EXPECT HEAVY RAIN...DEADLY LIGHTNING
GUSTY WINDS...AND POSSIBLY SMALL HAIL FROM THIS THUNDERSTORM.

PERSONS IN CAMDEN COUNTY AND ALL ACROSS SOUTH CENTRAL SECTIONS OF THE
AREA SHOULD BE ALERT TO RAPIDLY CHANGING...THREATENING WEATHER CONDITIONS
THE REST OF THIS AFTERNOON AND THIS EVENING. LISTEN TO NOAA WEATHER RADIO
FOR THE LATEST STATEMENTS OR POSSkIBLE WARNINGS.

LA GREE
Local storm report, Jul 4, 4:44 PM CDT, 3 hours 26 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
440 PM  CDT SAT JUL 4 1992

...PRELIMINARY REPORT....

TIME (CDT)      COUNTY      EVENT

330 PM          DENT       DELAYED REPORT OF GOLF BALL pSIZE HAIL
                           AT JADWIN.

TUCKER
Special weather statement, Jul 4, 6:26 PM CDT, 1 hour 44 minutes before
MOZ011-012-050030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
625 PM CDT SAT JUL 4 1992

...STRONG THUNDERSTORMS HAVE DEVELOPED NEAR DOWNTOWN ST LOUIS...

AT 620 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A STRONG
THUNDERSTORM FROM JUST SOUTH OF DOWNTOWN ST LOUIS TO SOUTHWEST PORTIONS
OF ST LOUIS COUNTY.  THESE STORMS WERE MOVING EAST AT 20 MPH AND ARE
EXPECTED TO PRODUCE GUSTY WIND...DEADLY LIGHTNING AND POSSIBLY SMALL
HAIL DURING THE LATE AFTERNOON AND EARLY EVENING HOURS.

PERSONS IN THE DOWNTOWN AREA AND VP FAIR PARTICIPANTS SHOULD KEEP AN EYE
ON THE SKY AND BE PREPARED TO TAKE SHELTER IMMEDIATELY.

TUCKER
Special weather statement, Jul 4, 6:38 PM CDT, 1 hour 32 minutes before
MOZALL-050030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
625 PM CDT SAT JUL 4 1992

...SOUTH CENTRAL MISSOURI REMAINS IN A SEVERE THUNDERSTORM WATCH UNTIL 8
PM CDT...

ALTHOUGH NO SEVERE WEATHER WAS OCCURRING IN CENTRAL MISSOURI AT 620 PM
...STRONG THUNDERSTORMS WERE LOCATED IN THE SOUTHEAST PART OF THE
REGION. THE STRONGEST STORMS WERE LOCATED FROM 30 MILES NORTH OF ROLLA
TO THE ST. LOUIS VICINITY. ADDITIONAL STRONG THUNDERSTORMS...SOME OF
THEM SEVERE AND POSSIBLY SPAWNING TORNADOES...WERE LOCATED WITHIN A WIDE
BAND OF SHOWER ACTIVITY IN SOUTHWEST MISSOURI. THESE INTENSE STORMS WERE
LOCATED BETWEEN SPRINGFIELD AND KANSAS CITY. ALL OF THE STORM ACTIVITY
WAS MOVING TO TcHE EAST NORTHEAST AT 25 MPH. RESIDENTS OF SOUTH CENTRAL
MISSOURI SHOULD REMAIN ALERT FOR THREATENING WEATHER CONDITIONS AND
STAY TUNED TO RADIO AND TV FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

STANLEY
Special weather statement, Jul 4, 6:41 PM CDT, 1 hour 29 minutes before
MOZ011-012-050045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
641 PM CDT SAT JUL 4 1992

...HAIL AND HEAVY RAIN WAS REPORTED JUST EAST OF DOWNTOWN ST LOUIS...

AT 630 PM...HAIL TO MARBLE SIZE WAS REPORTED AT CENTREVILLE...ILLINOIS
WHICH IS ABOUT 5 MILES EAST OF DOWNTOWN ST LOUIS.  RADAR INDICATED THIS
STORM WAS MOVING EAST AT 20 MPH.  RADAR ALSO INDICATED A STRONG
THUNDERSTORM IN JEFFERSON COUNTY MISSOURI.

THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP IN THE ST LOUIS
METROPOLITAN AREA LATE THIS AFTERNOON AND EARLY EVENING.  SOME OF THESE
STORMS WILL PRODUCE BRIEF VERY HEAVY RAIN...SMALL HAIL...GUSTY WIND AND
DEADLY LIGHTNING.  VP FAIR PARTICIPANTS SHOULD WATCH ATHE SKY CLOSELY AND
BE PREPARED TO SEEK SHELTER IMMEDIATELY.

TUCKER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 7:37 PM CDTTornado WarningLSXSaint Clair23 min
Jul 4, 8:03 PM CDTTornado WarningLSXRandolph, Saint Clair, Washington37 min

Nearby

Flash Flood Warnings in Illinois, 1992Every flash flood warning in 1992

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.