Alert archive / Illinois / Flash Flood Warnings in 1996
Flash Flood Warning 18, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Apr 29, 1996, 3:01 AM CDT for Clinton County, Madison County, Illinois. It was in force for 3 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 29, 1996, 3:01 AM CDT (08:01 UTC)
- Expired
- Apr 29, 1996, 6:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Clinton County, IL, Madison County, IL
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 8.0 hours before the alert went out and 184 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 477 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 404 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 290804 FFWSTL ILC027-189-119-133-163-291100- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 301 AM CDT MON APR 29 1996 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 600 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL ILLINOIS ...CLINTON COUNTY...WASHINGTON COUNTY IN SOUTHWEST ILLINOIS ...MADISON COUNTY...MONROE COUNTY...ST. CLAIR COUNTY THE FLASH FLOOD WARNING FOR MONROE...ST CLAIR...MADISON...CLINTON AND WASHINGTON COUNTIES IN ILLINOIS IS BEING EXTENDED UNTIL 6 AM. THE HEAVY RAIN THAT FELL ACROSS THE AREA HAS CAUSED CONSIDERABLE FLOODING OVER PARTS OF WESTERN ILLINOIS. REPORTS INDICATE THAT RAINFALL APPROACHING 7 INCHES OCCURRED DURING THE LAST 24 HOURS. THE ST CLAIR AND MADISON COUNTY SHERIFFS REPORTED THE TOWN OF STATE PARK WAS BEING EVACUATED AND THE HARDING CREEK LEVY HAD BROKEN. NUMEROUS ROADS ACROSS THE AREA WERE UNDER WATER. THE MONROE COUNTY SHERIFF REPORTED THAT MOST ROADS IN THE COUNTY HAD WATER OVER THEM. ANOTHER BAND OF THUNDERSTORMS WITH HEAVY RAIN WAS MOVING INTO MONROE ...ST CLAIR AND MADISON COUNTIES AT 300 AM. THESE THUNDERSTORMS WILL BRING ADDITIONAL HEAVY RAIN WHICH WILL ADD TO THE FLOODING PROBLEMS AS THEY MOVE EAST INTO CLINTON AND WASHINGTON COUNTIES. IF FLASH FLOODING IS OBSERVED OR IMMINENT...MOVE QUICKLY TO HIGHER GROUND. NEVER DRIVE INTO AN AREA WHERE WATER COVERS T*HE 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. & DLF
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, Apr 28, 10:45 PM CDT, 4 hours 16 minutes before
ILZ095>102-MOZ018-019-026-027-034>036-041-042-047>052-056>065-069- 079-080-089>091-094-095-102>104-290430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1042 PM CDT SUN APR 28 1996 ...SEVERE THUNDERSTORM WATCHES HAVE BEEN CANCELLED FOR SOUTHWEST AND EAST CENTRAL MISSOURI... THE SEVERE THUNDERSTORM WATCH THAT WAS VALID UNTIL 11PM FOR SOUTHWEST MISSOURI HAS BEEN CANCELLED. THE SEVERE THUNDERSTORMS WATCH THAT WAS VALID UNTIL MIDNIGHT FOR MUCH OF EAST CENTRAL MISSOURI HAS BEEN CANCELLED. THE POTENTIAL FOR SEVERE WEATHER HAS ENDED IN THESE AREAS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1 AM MONDAY MORNING FOR MUCH OF SOUTH CENTRAL AND SOUTHEAST MISSOURI. AMS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 7:03 PM CDT | Flash Flood Warning | LSX | Clinton, Madison, Saint Clair | 4 hr |
| Apr 28, 8:20 PM CDT | Flash Flood Warning | LSX | Monroe | 3 hr |
| Apr 28, 10:55 PM CDT | Flash Flood Warning | LSX | Clinton, Madison, Monroe, Saint Clair, Washington | 4 hr |
| Apr 29, 3:01 AM CDT | Flash Flood Warning | LSX | Monroe, Saint Clair | 3 hr |
| Apr 29, 3:01 AM CDT | Flash Flood Warning | LSX | Washington | 3 hr |
Nearby
Flash Flood Warnings in Illinois, 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.