Alert archive / Illinois / Flash Flood Warnings in 1993

Flash Flood Warning 25, NWS Lincoln, IL

July 17, 1993Carroll County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 17, 1993, 10:34 PM CDT for Carroll County, Illinois. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 17, 1993, 10:34 PM CDT (03:34 UTC)
Expired
Jul 18, 1993, 1:30 AM CDT
In force
3 hr
Issued by
NWS Lincoln, IL
Area
Whole counties

County Carroll County, IL

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.6 hours before the alert went out and 306 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 1993-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 joules per kilogram.LCLLFCEL10008507005003002001001 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 1993-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 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
10 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
1117 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
8 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 KRFD 180334
FFWRFD
ILC015-180630-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE ROCKFORD IL
1034 PM CDT SAT JUL 17 1993

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 130 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE NORTHWEST PART OF ILLINOIS
      CARROLL

AT 1030 PM CDT...RADAR INDICATED STRONG THUNDERSTORMS OVER
SOUTHERN CARROLL COUNTY.  RAINFALL AMOUNTS HAVE BEEN ESTIMATED
TO BE OVER 2 INCHES IN THE PAST HOUR.  MORE THUNDERSTORMS ARE
LOCATED BACK IN IOWA AND WILL ALSO MOVE THROUGH THE COUNTY.

SOME COMMUNITIES THAT ARE IN OR NEAR THE FLASH FLOOD AREA...
THOMSON...MT CARROLL AND CHADWICK.

IF YOU ARE IN LOW LYING...FLOOD PRONE AREA...MOVE TO HIGHER GROUND!
IF CAMPING...WATCH FOR RAPIDLY RISING WATER THAT MAY ENDANGER YOUR
CAMPSITE!  DO NOT CROSS HIGHWAYS THAT ARE COVERED BY WATER...IT MAY
BE MUCH DEEPER THAN YOU THINK!  REMEMBER...FLASH FLOODS HAPPEN VERY
RAPIDLY...BE ALERT!

 THIS RAIN IS FALLING OVER ALREADY SATURATED GROUND WHICH WILL
 COMPLICATE THE FLOODING PROBLEM.  STAY TUNED TO NOAA WEATHER
 RADIO FOR FURTHER STATEMENTS.

BRONIARCZYK

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 17, 8:32 PM CDT, 2 hours 2 minutes before
ILZ005>007-009-180230

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
830 PM CDT SAT JUL 17 1993

...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF WESTERN
AND CENTRAL ILLINOIS UNTIL 1100 PM...

THE SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR HENDERSON...
WARRREN...KNOX...STARK...PEORIA...MARSHALL...WOODFORD...PUTNAM
AND BUREAU COUNTIES. THE WATCH HAS BEEN CANCELLED FOR MCDONOUGH...
FULTON...SCHUYLER...MASON AND TAZEWELL COUNTIES.

AT 825 PM...THERE WERE NO SHOWERS OR THUNDERSTORMS IN WESTERN OR
CENTRAL ILLINOIS. STRONG THUNDERSTORMS IN EASTERN IOWA ARE EXPECTED
TO MOVE INTO PARTS OF WESTERN AND CENTRAL ILLINOIS AFTER 1000 PM AND
HAVE THE POTENTIAL TO PRODUCE SEVERE WEATHER. STAY TUNED TO NOAA
WEATHER RADIO...TV...OR LOCAL RADIO FOR LATER UPDATES.

MILLER
Special weather statement, Jul 17, 8:43 PM CDT, 1 hour 51 minutes before
ILZ009-170215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
8 40 PM CDT SAT JUL 17 1993

...SEVERE THUNDERSTORM IN EFFECT UNTIL 11 PM CDT FOR CASS COUNTY HAS
BEEN CANCELLED...

THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT FOR CASS COUNTY UNTIL
11 PM CDT HAS BEEN CANCELLED.

AT 8 35 PM CDT...RADAR DID NOT INDICATE ANY SHOWERS OR THUNDERSTORMS
OVER CENTRAL ILLINOIS.  HOWEVER...AN ISOLATED THUDERSTORM WAS 30 MILES
EAST NORTHEAST OF ST LOUIS AND MOVING SLOWLY TO THE EAST.

STAY TUNED TO YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR FURTHER
UPDATES.

AUTEN
Special weather statement, Jul 17, 8:48 PM CDT, 1 hour 46 minutes before
ILZ009-170215-

SPECIAL WEATHER STATEMENT...CORRECTION...HEADLINE...
NATIONAL WEATHER SERVICE SPRINGFIELD IL
8 40 PM CDT SAT JUL 17 1993

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 11 PM CDT FOR CASS
COUNTY HAS BEEN CANCELLED...

THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT FOR CASS COUNTY UNTIL
11 PM CDT HAS BEEN CANCELLED.

AT 8 35 PM CDT...RADAR DID NOT INDICATE ANY SHOWERS OR THUNDERSTORMS
OVER CENTRAL ILLINOIS.  HOWEVER...AN ISOLATED THUDERSTORM WAS 30 MILES
EAST NORTHEAST OF ST LOUIS AND MOVING SLOWLY TO THE EAST.

STAY TUNED TO YOUR FAVORITE SOURCE OF WEATHER INFORMATION FOR FURTHER
UPDATES.

AUTEN
Special weather statement, Jul 17, 9:50 PM CDT, 44 minutes before
ILZ005>007-009-180430

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
950 PM CDT SAT JUL 17 1993

...SEVERE THUNDERSTORM WATCH CANCELLED FOR ALL OF WEST CENTRAL ILLINSOI...

WITH THE CANCELLATION OF THE SEVERE THUNDERSTORM WATCH...THE THREAT
OF SEVERE WEATHER HAS ENDED FOR THE EVENING ACROSS THE HEART OF ILLINOIS.

AT 945 PM...ONLY SHOWERS WERE DETECTED OVER WESTERN WOODFORD COUNTY...
15 MILES NORTHEAST OF PEORIA. ELSWHERE ACROSS THEl REGION ONLY PARTLY
CLOUDY COINDITIONS PERSISTED. THE CHANCE REMAINS FOR FURTHER DEVELOPMENT
OF SHOWERS AND THUNDERSTORMS OVERNIGHT AND SOME HEAVY RAIN MAY YET BE SEEN
...BUT THE LIKELYHOOD OF SEVERE WEATHER HAS BEEN GREATLY REDUCED.

BREESER
Special weather statement, Jul 17, 9:50 PM CDT, 44 minutes before
ILZ005>007-009-180430

SPECIAL WEATHER STATEMENT...CORRECTED...
NATIONAL WEATHER SERVICE PEORIA IL
950 PM CDT SAT JUL 17 1993

...SEVERE THUNDERSTORM WATCH CANCELLED FOR ALL OF WEST CENTRAL ILLINOIS...

WITH THE CANCELLATION OF THE SEVERE THUNDERSTORM WATCH...THE THREAT
OF SEVERE WEATHER HAS ENDED FOR THE EVENING ACROSS THE HEART OF ILLINOIS.

AT 945 PM...ONLY SHOWERS WERE DETECTED OVER WESTERN WOODFORD COUNTY...
15 MILES NORTHEAST OF PEORIA. ELSWHERE ACROSS THE REGION ONLY PARTLY
CLOUDY COINDITIONS PERSISTED. THE CHANCE REMAINS FOR FURTHER DEVELOPMENT
OF SHOWERS AND THUNDERSTORMS OVERNIGHT AND SOME HEAVY RAIN MAY YET BE SEEN
...BUT THE LIKELYHOOD OF SEVERE WEATHER HAS BEEN GREATLY REDUCED.

BREESER
/SPELLING/
Special weather statement, Jul 17, 9:54 PM CDT, 40 minutes before
ILZ005>007-009-180430

SPECIAL WEATHER STATEMENT...CORRECTED...
NATIONAL WEATHER SERVICE PEORIA IL
950 PM CDT SAT JUL 17 1993

...SEVERE THUNDERSTORM WATCH CANCELLED FOR ALL OF WEST CENTRAL ILLINOIS...

WITH THE CANCELLATION OF THE SEVERE THUNDERSTORM WATCH...THE THREAT
OF SEVERE WEATHER HAS ENDED FOR THE EVENING ACROSS THE HEART OF ILLINOIS.

AT 945 PM...ONLY SHOWERS WERE DETECTED OVER WESTERN WOODFORD COUNTY...
15 MILES NORTHEAST OF PEORIA. ELSWHERE ACROSS THE REGION ONLY PARTLY
CLOUDY COINDITIONS PERSISTED. THE CHANCE REMAINS FOR FURTHER DEVELOPMENT
OF SHOWERS AND THUNDERSTORMS OVERNIGHT AND SOME HEAVY RAIN MAY YET BE SEEN
...BUT THE LIKELYHOOD OF SEVERE WEATHER HAS BEEN GREATLY REDUCED.

BREESER
/SPELLING/

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 3:13 PM CDTSevere Thunderstorm WarningILXMarshall62 min
Jul 18, 4:39 PM CDTSevere Thunderstorm WarningILXMenard56 min
Jul 18, 4:52 PM CDTSevere Thunderstorm WarningILXEdgar38 min
Jul 18, 5:20 PM CDTFlash Flood WarningILXDeKalb2 hr
Jul 18, 6:32 PM CDTSevere Thunderstorm WarningILXShelby21 min
Jul 18, 6:32 PM CDTSevere Thunderstorm WarningILXColes28 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.