Alert archive / Illinois / Flash Flood Warnings in 2001
Flash Flood Warning 14, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Aug 22, 2001, 11:50 PM CDT for Lewis County, Missouri; Adams County, Brown County, Illinois. It was in force for 6 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
- Aug 22, 2001, 11:50 PM CDT (04:50 UTC)
- Expired
- Aug 23, 2001, 5:45 AM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Adams County, IL, Brown County, IL, Lewis County, MO
The radar
The St Louis radar (KLSX), 154 km from the middle of the area, began a volume at 04:50 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
Davenport, (KDVN), launched 00:00Z, 4.8 hours before the alert went out and 188 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
- 494 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 1507 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KLSX 230508 FFWSTL ILC001-009-MOC111-231045- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1150 PM CDT WED AUG 22 2001 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * FLASH FLOOD WARNING FOR... LEWIS COUNTY IN NORTHEAST MISSOURI ADAMS COUNTY IN WEST CENTRAL ILLINOIS BROWN COUNTY IN WEST CENTRAL ILLINOIS * UNTIL 545 AM CDT * AT 1150 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS INCREASING IN INTENSITY AND COVERAGE OVER EXTREME NORTHEAST MISSOURI INTO WEST CENTRAL ILLINOIS. DOPPLER RAINFALL ESTIMATES INDICATE 3 TO 5 INCHES OF RAIN HAVE ALREADY FALLEN NORTH OF U.S. HIGHWAY 24 IN NORTHERN ADAMS AND BROWN COUNTIES WITH LESSER AMOUNTS FURTHER SOUTH. THIS STORM COMPLEX HAS BECOME RATHER COMPLICATED AND BACKBUILDING HAS TAKEN PLACE WITH STORMS REFORMING SLIGHTLY FURTHER WEST IN EXTREME NORTHEAST MISSOURI. THE COMPLEX IS ALSO SLIDING SLOWLY SOUTH AND WILL INTENSIFY BACK INTO THESE THREE COUNTIES. COPIOUS AMOUNTS OF RAIN WILL LIKELY FALL IN A SHORT PERIOD OF TIME WITH RAINFALL TOTALS POSSIBLY REACHING 6 TO 10 INCHES BEFORE MORNING. THIS IS A VERY UNUSUAL SITUATION AND PLACES THAT NORMALLY DO NOT FLOOD WILL BE SUSCEPTIBLE. RIVERS INCLUDING BEAR CREEK...SOUTH FORK...AND THE LA MOINE RIVERS ALONG WITH ALL SMALLER STREAMS AND TRIBUTARIES WILL EXPERIENCE MAJOR RISES OVERNIGHT AND DURING THE DAY THURSDAY. * FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE AFFECTING ALL COMMUNITIES ALONG AND NORTH OF ROUTE 24 INCLUDING QUINCY AND MT. STERLING IN ILLINOIS AND CANTON...LA GRANGE AND MONTICELLO IN MISSOURI. IF FLASH FLOODING IS OBSERVED OR IMMINENT...MOVE QUICKLY TO HIGHER GROUND. NEVER DRIVE INTO AN AREA WHERE WATER COVERS THE ROAD. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. ACT QUICKLY IF FLASH FLOODING IS OBSERVED. MOVE TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. $$ PEDIGO
Nearby
Flash Flood Warnings in Illinois, 2001Flash Flood Warnings in Missouri, 2001Every flash flood warning in 2001
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.