Alert archive / Illinois / Flash Flood Warnings in 1993

Flash Flood Warning 32, NWS Lincoln, IL

July 24, 1993Knox County, Warren County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 24, 1993, 2:08 AM CDT for Knox County, Warren County, Illinois. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 24, 1993, 2:08 AM CDT (07:08 UTC)
Expired
Jul 24, 1993, 5:15 AM CDT
In force
3 hr
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Knox County, IL, Warren County, IL

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 7.1 hours before the alert went out and 442 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, Green Bay/Straub, WI at 00:00Z on 1993-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Green Bay/Straub, WI at 00:00Z on 1993-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1390 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPIA 240708
FFWPIA
ILC095-187-241015-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEORIA IL
208 AM CDT SAT JUL 24 1993
 
THE NATIONAL WEATHER SERVICE IN PEORIA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  515 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL ILLINOIS
 
   ...NORTHERN KNOX COUNTY...NORTHERN WARREN COUNTY
 
HEAVY RAIN EXTENDED FROM ABOUT OQUAWKA...15 MILES NORTHEAST OF
BURLINGTON TO EASTERN KNOX COUNTY...30 MILES NORTHWEST OF PEORIA AT
200 AM. RAINFALL RATES OF 1 TO 1 1/2 INCHES PER HOUR HAVE BEEN COMMON
IN THESE AREAS...WITH MORE HEAVY RAINFALL EXPECTED THE NEXT SEVERAL
HOURS. MANY CREEKS AND STREAMS WERE OVER THEIR BANKS...HIGHWAYS AND
STREETS HAD STANDING WATER...AND BASEMENTS WERE FLOODED DUE TO A
COMBINATION OF HEAVY RAIN THAT OCCURRED RECENTLY AND EARLIER ON FRIDAY.
 
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.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS O6CCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
 
MILLER

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 23, 11:17 PM CDT, 2 hours 51 minutes before
ILZ005>007-240530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
1115 PM CDT FRI JUL 23 1993

...FLASH FLOOD WATCH TONIGHT...

AT 1110 PM CDT...RADAR INDICATED LIGHT SHOWERS WERE OCCURRING OVER WESTERN
ILLINOIS NEAR THE MISSISSIPPI RIVER IN HANCOCK...HENDERSON AND WARREN
COUNTIES.  SOME HEAVIER SHOWERS AND THUNDERTORMS WERE OVER EASTERN IOWA
IOWA...WEST AND NORTHWEST OF DAVENPORT.  THESE SHOWERS AND STORMS WERE
MOVING TO THE EAST AT 20 MILES PER HOUR.  ELSEWHERE IN WESTERN AND
CENTRAL ILLINOIS...MOSTLY CLOUDY CONDITIONS WERE REPORTED WITH AREAS OF
PATCHY DENSE FOG.

A FLASH FLOOD WATCH REMAINS IN EFFECT ACROSS THE REGION THIS EVENING.  SOME
AREAS HAVE RECEIVED LARGE AMOUNTS OF PRECIPITATION TODAY AND ANY ADDITIONAL
RAINFALL COULD CAUSE A FLOODING HAZARD.  PERSONS IN THE PATH OF THESE SHOWERS
AND STORMS SHOULD MONITOR THE WEATHER SITUATION CLOSELY THROUGH LOCAL MEDIA
OUTLETS AND NOAA WEATHER RADIO.  SEEK HIGHER GROUND 4IF ROADWAYS AND LOW
LYING AREAS BECOME INUNDATED.

OUSLEY
Special weather statement, Jul 24, 12:40 AM CDT, 1 hour 28 minutes before
ILZ005>007-240700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
1240 AM CDT SAT JUL 24 1993

...THUNDERSTORMS AND SHOWERS PRODUCING HEAVY RAIN OVER WESTERN ILLINOIS...

AT 1235 AM CDT...RADAR INDICATED A LARGE AREA OF SHOWERS AND THUNDERSTORMS
OVER WESTERN ILLINOIS.  THESE STORMS HAVE PRODUCED RAINFALL AMOUNTS IN
EXCESS OF IN AN HOUR AND WERE MOVING TO THE EAST AT 20 MILES.

THE STRONGEST STORMS WERE OVER CENTRAL WARREN COUNTY... NEAR MONMOUTH...AND
IN NORTHEASTERN KNOX COUNTY...WEST OF GALESBURG.  STORMS WILL CONTINUE TO
MOVE INTO THE WESTERN ILLINOIS AREA FROM IOWA OVER THE NEXT FEW HOURS.

A FLASH FLOOD WATCH REMAINS IN EFFECT ACROSS THE REGION THIS EVENING.  SOME
AREAS HAVE RECEIVED LARGE AMOUNTS OF PRECIPITATION TODAY AND ANY ADDITIONAL
RAINFALL COULD CAUSE A FLOODING HAZARD.  PERSONS IN THE PATH OF THESE SHOWERS
AND STORMS SHOULD MONITOR THE WEATHER SITUATION CLOSELY THROUGH LOCAL MEDIA
OUTLETS AND NOAA WEATHER RADIO.  SEEK HIGHER GROUND IF ROADWAYS AND LOW
LYING AREAS BECOME INUNDATED.

OUSLEY
Special weather statement, Jul 24, 12:45 AM CDT, 1 hour 23 minutes before
ILZ005>007-240700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
1240 AM CDT SAT JUL 24 1993

...THUNDERSTORMS AND SHOWERS PRODUCING HEAVY RAIN OVER WESTERN ILLINOIS...

AT 1235 AM CDT...RADAR INDICATED A LARGE AREA OF SHOWERS AND THUNDERSTORMS
OVER WESTERN ILLINOIS.  THESE STORMS HAVE PRODUCED RAINFALL AMOUNTS IN
EXCESS OF IN AN HOUR AND WERE MOVING TO THE EAST AT 20 MILES.

THE STRONGEST STORMS WERE OVER CENTRAL WARREN COUNTY... NEAR MONMOUTH...AND
IN NORTHEASTERN KNOX COUNTY...WEST OF GALESBURG.  STORMS WILL CONTINUE TO
MOVE INTO THE WESTERN ILLINOIS AREA FROM IOWA OVER THE NEXT FEW HOURS.

A FLASH FLOOD WATCH REMAINS IN EFFECT ACROSS THE REGION THIS EVENING.  SOME
AREAS HAVE RECEIVED LARGE AMOUNTS OF PRECIPITATION TODAY AND ANY ADDITIONAL
RAINFALL COULD CAUSE A FLOODING HAZARD.  PERSONS IN THE PATH OF THESE SHOWERS
AND STORMS SHOULD MONITOR THE WEATHER SITUATION CLOSELY THROUGH LOCAL MEDIA
OUTLETS AND NOAA WEATHER RADIO.  SEEK HIGHER GROUND IF ROADWAYS AND LOW
LYING AREAS BECOME INUNDATED.

OUSLEY
Special weather statement, Jul 24, 12:45 AM CDT, 1 hour 23 minutes before
ILZ005>007-240700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
1245 AM CDT SAT JUL 24 1993

...THUNDERSTORMS AND SHOWERS PRODUCING HEAVY RAIN OVER WESTERN ILLINOIS...

AT 1235 AM CDT...RADAR INDICATED A LARGE AREA OF SHOWERS AND THUNDERSTORMS
OVER WESTERN ILLINOIS.  THESE STORMS HAVE PRODUCED RAINFALL AMOUNTS IN
EXCESS OF IN AN HOUR AND WERE MOVING TO THE EAST AT 20 MILES PER HOUR.

THE STRONGEST STORMS WERE OVER CENTRAL WARREN COUNTY... NEAR MONMOUTH...AND
IN NORTHEASTERN KNOX COUNTY...WEST OF GALESBURG.  STORMS WILL CONTINUE TO
MOVE INTO THE WESTERN ILLINOIS AREA FROM IOWA OVER THE NEXT FEW HOURS.

A FLASH FLOOD WATCH REMAINS IN EFFECT ACROSS THE REGION THIS EVENING.  SOME
AREAS HAVE RECEIVED LARGE AMOUNTS OF PRECIPITATION TODAY AND ANY ADDITIONAL
RAINFALL COULD CAUSE A FLOODING HAZARD.  PERSONS IN THE PATH OF THESE SHOWERS
AND STORMS SHOULD MONITOR THE WEATHER SITUATION CLOSELY THROUGH LOCAL MEDIA
OUTLETS AND NOAA WEATHER RADIO.  SEEK HIGHER GROUND IF ROADWAYS AND LOW
LYING AREAS BECOME INUNDATED.

OUSLEY
Special weather statement, Jul 24, 12:49 AM CDT, 1 hour 19 minutes before
ILZ005>007-240700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
1245 AM CDT SAT JUL 24 1993

...THUNDERSTORMS AND SHOWERS PRODUCING HEAVY RAIN OVER WESTERN ILLINOIS...

AT 1235 AM CDT...RADAR INDICATED A LARGE AREA OF SHOWERS AND THUNDERSTORMS
OVER WESTERN ILLINOIS.  THESE STORMS HAVE PRODUCED RAINFALL AMOUNTS IN
EXCESS OF IN AN HOUR AND WERE MOVING TO THE EAST AT 20 MILES PER HOUR.

THE STRONGEST STORMS WERE OVER CENTRAL WARREN COUNTY... NEAR MONMOUTH...AND
IN NORTHEASTERN KNOX COUNTY...WEST OF GALESBURG.  STORMS WILL CONTINUE TO
MOVE INTO THE WESTERN ILLINOIS AREA FROM IOWA OVER THE NEXT FEW HOURS.

A FLASH FLOOD WATCH REMAINS IN EFFECT ACROSS THE REGION THIS EVENING.  SOME
AREAS HAVE RECEIVED LARGE AMOUNTS OF PRECIPITATION TODAY AND ANY ADDITIONAL
RAINFALL COULD CAUSE A FLOODING HAZARD.  PERSONS IN THE PATH OF THESE SHOWERS
AND STORMS SHOULD MONITOR THE WEATHER SITUATION CLOSELY THROUGH LOCAL MEDIA
OUTLETS AND NOAA WEATHER RADIO.  SEEK HIGHER GROUND IF ROADWAYS AND LOW
LYING AREAS BECOME INUNDATED.

OUSLEY
Special weather statement, Jul 24, 1:47 AM CDT, 21 minutes before
ILZ009-240925-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
147 AM CDT SAT JUL 24 1993

...FLASH FLOOD WATCH REMAINS IN EFFECT FOR CENTRAL ILLINOIS OVERNIGHT...

AT 145 AM CDT...NO RAINFALL WAS DETECTED BY RADAR OVER CENTRAL
ILLINOIS.  HOWEVER...SHOWERS AND THUNDERSTORMS WERE WIDESPREAD OVER
NORTHWEST AND PARTS OF WEST CENTRAL ILLINOIS...ALONG AND WEST OF A
LINE FROM 65 MILES NORTHEAST OF PEORIA...TO 40 MILES SOUTHWEST OF
PEORIA.

SHOWERS AND A FEW THUNDERSTORMS WERE ALSO DETECTED OVER WEST CENTRAL
ILLINOIS AROUND QUINCY...AND A LARGE AREA OF HEAVIER STORMS WAS OVER
NORTHEAST MISSOURI AND SOUTHERN IOWA.  MOVEMENT WAS EAST AT 25 MPH.

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP BEFORE
SUNRISE OVER CENTRAL ILLINOIS.  ADDITIONAL HEAVY RAINFALL OVER THE
SATURATED GROUND COULD PRODUCE FLASH FLOODING OF SOME LOW LYING AREAS
NEAR STREAMS AND RIVERS.  IF YOU ARE IN AN AREA PRONE TO FLASH FLOODING
...PLAN AHEAD NOW FOR A QUICK EVACUATION IN CASE FLASH FLOODING
DEVELOPS.

STAY TUNED TO YOUR FAVORITE SOURCE FOR WEATHER INFORMATION FOR FURTHER
STATEMENTS.

MCCOY

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 24, 3:48 AM CDTFlash Flood WarningILXKnox, Stark4 hr
Jul 24, 3:48 AM CDTFlash Flood WarningILXHenderson, Warren4 hr
Jul 24, 4:41 AM CDTSevere Thunderstorm WarningILXFulton49 min
Jul 24, 4:54 AM CDTFlash Flood WarningILXFulton, Mason, Schuyler, Tazewell4 hr
Jul 24, 4:54 AM CDTFlash Flood WarningILXMcDonough4 hr
Jul 24, 4:54 AM CDTFlash Flood WarningILXPeoria, Woodford4 hr
Jul 24, 5:14 AM CDTFlash Flood WarningILXBureau, Marshall, Putnam4 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.