Alert archive / Illinois / Flash Flood Warnings in 1993
Flash Flood Warning 41, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood warning at Jul 31, 1993, 9:08 AM CDT for Hancock County, Illinois. It was in force for 37 min.
The area
The counties it named.
The facts
- Issued
- Jul 31, 1993, 9:08 AM CDT (14:08 UTC)
- Expired
- Jul 31, 1993, 9:45 AM CDT
- In force
- 37 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County Hancock County, IL
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 2.1 hours before the alert went out and 413 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
- 2799 J/kg
- Mixed-layer CIN
- -188 J/kg
- Mixed-layer LCL
- 1576 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPIA 311408 FFWPIA ILC067-311515- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PEORIA IL 908 AM CDT SAT JUL 31 1993 THE NATIONAL WEATHER SERVICE IN PEORIA HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 1015 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN WEST CENTRAL ILLINOIS ...HANCOCK COUNTY AT 905 AM CDT...A SEVERE THUNDERSTORM WAS DETECTED OVER SOUTHWESTERN LEE COUNTY OF IOWA. THIS STORM WILL PRODUCE HAIL...INTENSE LIGHTNING AND VERY HEAVY RAINFALL OVER HANCOCK COUNTY DURING THE NEXT 45 MINUTES. MOVEMENT OF THE STORM WAS TO THE SOUTH SOUTHEAST AT 15 TO 20 MPH AND IT WILL THREATEN THE TOWNS OF DALLAS CITY...NAUVOO...PNTOOSAC...DURHAM... COLUSA AND ADRIAN DURING THE NEXT 45 MINUTES. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. BREESER
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 31, 7:23 AM CDT, 1 hour 45 minutes before
ILZ006-311330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 725 AM CDT WED JUL 28 1993 ...THUNDERSTORMS DEVELOPING OVER WESTERN ILLINOIS... AT 720 AM CDT...THUNDERSTORMS WERE DETECTED OVER EXTREME WESTERN ILLINOIS OVER HANCOCK COUNTY. THE STRONGEST STORM WAS NEAR CARTHAGE... 28 MILES SOUTH OF BURLINGTON IOWA...WHERE HEAVY RAIN AND SMALL HAIL WAS REPORTED. MOVEMENT OF THE STORMS WAS TO THE SOUTH SOUTHEAST AT 30 MPH. MORE SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER EXTREME SOUTHEASTERN IOWA AND NORTHEASTERN MISSOURI AND THESE WILL LIKELY BE MOVING ACROSS THE MISSISSIPPI RIVER INTO WESTERN ILLINOIS DURING THE NEXT HOUR. SOME OF THE STORMS ARE CAPABLE OF PRODUCING HEAVY RAXIN...SMALL HAIL...GUSTY WINDS AND INTENSE LIGHTNING. BREESER
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 7:56 AM CDT | Severe Thunderstorm Warning | ILX | Hancock, Henderson | 64 min |
| Jul 31, 9:08 AM CDT | Severe Thunderstorm Warning | ILX | Hancock | 37 min |
Nearby
Flash Flood Warnings in Illinois, 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.