Alert archive / Illinois / Flash Flood Warnings in 1993
Flash Flood Warning 39, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Aug 16, 1993, 7:17 AM CDT for Mercer County, Illinois. It was in force for 118 min.
The area
The counties it named.
The facts
- Issued
- Aug 16, 1993, 7:17 AM CDT (12:17 UTC)
- Expired
- Aug 16, 1993, 9:15 AM CDT
- In force
- 118 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Mercer County, IL
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 0.3 hours before the alert went out and 423 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 855 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -56 m²/s²
- 0-3 km storm-relative helicity
- -119 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 KMLI 161217
FFWMLI
IAC115-ILC131-161415-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOLINE IL
717 AM CDT MON AUG 16 1993
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 915 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE EXTREME EAST PART OF IOWA
LOUISA...
IN THE NORTHWEST PART OF ILLINOIS
MERCER...
AT 710 AM CDT...LOUISA COUNTY POLICE REPORTED THAT MOST STREETS
WERE FLOODED IN WAPELLO AND THAT NUMEROUS ROADS WERE FLOODED IN
THE NORTHEAST SECTION OF LOUISA COUNTY. MERCER COUNTY POLICE ALSO
REPORTED THAT NUMEROUS ROADS WERE FLOODED IN WESTERN MERCER COUNTY.
THE SLOW MOVING THUNDERSTORMS THAT HAVE PRODUCED THIS FLOODING
WILL PERSIST OVER THESE COUNTY FOR THE NEXT SEVERAL HOURS.
FLASH FLOOD WARNING MEANS FLASH FLOODING IS OCCURRING OR IS
IMMINENT IN THE SPECIFIED AREA.
PERSONS ALONG OR NEAR STREAMS SUBJECT TO FLASH FLOODING OR SHARP
RISES SHOULD BE PREPARED TO MOVE TO A PLACE OF SAFETY IMMEDIATELY.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOtWING STREAM...EVEN A SMALL ONE...ON FOOT.
IF TIME PERMITS...ASK THE NEAREST LAW ENFORECMENT AGENCY TO RELAY
YOUR REPORT OF FLOODING TO THE NATIONAL WEATHER SERVICE.
BELL 1217ZWhat 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, Aug 16, 4:24 AM CDT, 2 hours 53 minutes before
ILZ004-IAZ078-088-089-099-161130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 424 AM CDT MON AUG 16 1993 ...FLASH FLOOD WARNING FOR DES MOINES COUNTY DROPPED... ...THUNDERSTORMS CONTINUE OVER BISTATE AREA... AT 420 AM CDT...THE FLASH FLOOD WAS DROPPED SINCE THE THUNDERSTORMS WHICH CAUSED THE FLASH FLOOD WARNING TO BE ISSUED HAD MOVED EAST INTO ROCK ISLAND COUNTY OF ILLINOIS. THE LINE OF THUNDERSTORMS EXTENDS FROM WATERLOO IOWA SOUTHEAST THROUGH THE QUAD CITIES AND FURTHER INTO CENTRAL ILLINOIS. THESE THUNDERSTORMS WILL CONTINUE ACROSS THE AREA INTO THE MID MORNING HOURS. THESE STORMS ARE CAPABLE OF PRODUCING HEAVY RAIN DOWNPOUR...STRONG WIND GUSTS AND DANGEROUS LIGHTNING. IF THESE STORMS APPROACH YOUR AREA...GO INSIDE TO A PLACE OF SAFETY. BELL /
Special weather statement, Aug 16, 4:24 AM CDT, 2 hours 53 minutes before
ILZ004-IAZ078-088-089-099-161130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 424 AM CDT MON AUG 16 1993 ...FLASH FLOOD WARNING FOR DES MOINES COUNTY DROPPED... ...THUNDERSTORMS CONTINUE OVER BISTATE AREA... AT 420 AM CDT...THE FLASH FLOOD WAS DROPPED SINCE THE THUNDERSTORMS WHICH CAUSED THE FLASH FLOOD WARNING TO BE ISSUED HAD MOVED EAST INTO ROCK ISLAND COUNTY OF ILLINOIS. THE LINE OF THUNDERSTORMS EXTENDS FROM WATERLOO IOWA SOUTHEAST THROUGH THE QUAD CITIES AND FURTHER INTO CENTRAL ILLINOIS. THESE THUNDERSTORMS WILL CONTINUE ACROSS THE AREA INTO THE MID MORNING HOURS. THESE STORMS ARE CAPABLE OF PRODUCING HEAVY RAIN DOWNPOUR...STRONG WIND GUSTS AND DANGEROUS LIGHTNING. IF THESE STORMS APPROACH YOUR AREA...GO INSIDE TO A PLACE OF SAFETY. BELL /
Special weather statement, Aug 16, 4:56 AM CDT, 2 hours 21 minutes before
ILZ004-IAZ078-088-089-099-161130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 456 AM CDT MON AUG 16 1993 ...THUNDERSTORMS CONTINUE OVER BISTATE AREA... AT 455 AM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER NORTH CENTRAL MERCER COUNTY ILLINOIS...APPROXIMIATELY 15 MILES SOUTHWEST OF THE QUAD CITIES AND MOVING TO THE EAST AT 25 MPH. THIS STORM WILL BE OVER THE MERCER/HENRY COUNTY ILLINOIS LINE BY 530 AM CDT. THIS STORM HAS A HISTORY OF PRODUCING SMALL HAIL...HEAVY DOWNPOURS AND GUSTY WINDS. IF THIS STORM APPROACHES YOUR LOCATION...GO TO AN INTERIOR ROOM UNTIL THE STORM PASSES. BELL
Special weather statement, Aug 16, 5:00 AM CDT, 2 hours 17 minutes before
ILZ004-IAZ078-088-089-099-161130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 456 AM CDT MON AUG 16 1993 ...THUNDERSTORMS CONTINUE OVER BISTATE AREA... AT 455 AM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER NORTH CENTRAL MERCER COUNTY ILLINOIS...APPROXIMIATELY 15 MILES SOUTHWEST OF THE QUAD CITIES AND MOVING TO THE EAST AT 25 MPH. THIS STORM WILL BE OVER THE MERCER/HENRY COUNTY ILLINOIS LINE BY 530 AM CDT. THIS STORM HAS A HISTJORY OF PRODUCING SMALL HAIL...HEAVY DOWNPOURS AND GUSTY WINDS. IF THIS STORM APPROACHES YOUR LOCATION...GO TO AN INTERIOR ROOM UNTIL THE STORM PASSES. BELL
Special weather statement, Aug 16, 6:35 AM CDT, 42 minutes before
ILZ004-IAZ078-088-089-099-161230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 635 AM CDT MON AUG 16 1993 ...THUNDERSTORMS RUMBLING THROUGH THE QUAD CITIES... THUNDERSTORMS CONTINUED TO MOVE EAST ACROSS THE TWO STATE REGION AT 30 MILES AN HOUR. AT 630 AM...THE STRONGEST THUNDERSTORMS WERE OVER THE QUAD CITIES METRO AREA. A LINE OF SCATTERED THUNDERSTORMS WAS PUSHING THORUGH EASTERN MUSCATINE COUNTY IOWA AND CENTRAL LOUISA COUNTY IOWA. ANOTHERN SMALL AREA OF THUNDERSTORMS WAS MOVING THROUGH SOUTHEASTERN MERCER COUNTY ILLINOIS. MORE THUNDERSTORMS WERE NOW ENTERING THE NORTHWESTERN PARTS OF HENRY COUNTY IOWA. THE STORMS OVER THE QUAD CITIES WILL MOVE OVER NORTHERN HENRY COUNTY THROUGH 730 AM. STORMS WILL BE ENTERING SOUTHWEST WHITESIDE COUNTY AROUND 700 AM. AS THESE STORMS PROGRESS EAST AT 30 MILES AN HOUR...THEY WILL PRODUCE VERY HEAVY RAIN...FREQUENT LIGHTNING...STRONG GUSTY WINDS...AND POSSIBLY SOME HAIL. PEOPLE IN THE PATH OF THESE STORMS SHOULD TAKE SHELTER AND WAIT OUT THE STORMS. KEEP AN EYE TO RISING CREEKS AND STREAMS AND MOVE TO HIGHER GROUND IF THE WATER THREATENS YOU. GOEHRING
Special weather statement, Aug 16, 6:36 AM CDT, 41 minutes before
ILZ004-IAZ078-088-089-099-161230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 635 AM CDT MON AUG 16 1993 ...THUNDERSTORMS RUMBLING THROUGH THE QUAD CITIES... THUNDERSTORMS CONTINUED TO MOVE EAST ACROSS THE TWO STATE REGION AT 30 MILES AN HOUR. AT 630 AM...THE STRONGEST THUNDERSTORMS WERE OVER THE QUAD CITIES METRO AREA. A LINE OF SCATTERED THUNDERSTORMS WAS PUSHING THORUGH EASTERN MUSCATINE COUNTY IOWA AND CENTRAL LOUISA COUNTY IOWA. ANOTHERN SMALL AREA OF THUNDERSTORMS WAS MOVING THROUGH SOUTHEASTERN MERCER COUNTY ILLINOIS. MORE THUNDERSTORMS WERE NOW ENTERING THE NORTHWESTERN PARTS OF HENRY COUNTY IOWA. THE STORMS OVER THE QUAD CITIES WILL MOVE OVER NORTHERN HENRY COUNTY THROUGH 730 AM. STORMS WILL BE ENTERING SOUTHWEST WHITESIDE COUNTY AROUND 700 AM. AS THESE STORMS PROGRESS EAST AT 30 MILES AN HOUR...THEY WILL PRODUCE VERY HEAVY RAIN...FREQUENT LIGHTNING...STRONG GUSTY WINDS...AND POSSIBLY SOME HAIL. PEOPLE IN THE PATH OF THESE STORMS SHOULD TAKE SHELTER AND WAIT OUT THE STORMS. KEEP AN EYE TO RISING CREEKS AND STREAMS AND MOVE TO HIGHER GROUND IF THE WATER THREATENS YOU. GOEHRING
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 9:08 AM CDT | Flash Flood Warning | DVN | Mercer | 3 hr |
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.