Alert archive / Illinois / Flash Flood Warnings in 1993

Flash Flood Warning 48, NWS Lincoln, IL

September 6, 1993Mason County, Illinois

NWS Lincoln, IL issued this flash flood warning at Sep 6, 1993, 1:48 AM CDT for Mason County, Illinois. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Sep 6, 1993, 1:48 AM CDT (06:48 UTC)
Expired
Sep 6, 1993, 5:45 AM CDT
In force
4 hr
Issued by
NWS Lincoln, IL
Area
Whole counties

County Mason County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 6.8 hours before the alert went out and 368 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, Paducah/Barkley, KY at 00:00Z on 1993-09-06Temperature 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, Paducah/Barkley, KY at 00:00Z on 1993-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 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
1698 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
-13 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 060651
FFWPIA
ILC125-061045-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEORIA IL
148 AM CDT MON SEP 6 1993
 
THE NATIONAL WEATHER SERVICE IN PEORIA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  545 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL ILLINOIS
 
   ...MASON COUNTY
 
AN AREA OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...WILL BE MOVING
INTO MUCH OF MASON COUNTY BETWEEN 200 AND 230 AM. THESE THUNDERSTORMS
ARE EXPECTED TO PRODUCE A LARGE AMOUNT OF RAINFALL IN A SHORT PERIOD OF
TIME. THIS WILL ONLY AGGRAVATE AN ALREADY DANGEROUS FLOODING SITUATION
IN MASON COUNTY CAUSED BY AN OVERFLOWING UNDERGROUND AQUIFER.
 
MANY ROADS IN MASON COUNTY WERE EITHER CLOSED OR HAD SIGNIFICANT AMOUNTS
OF WATER ON THEM INCLUDING HIGHWAY 136 EAST OF HAVANA...ROUTE 97 NORTH
OF KILBOURNE...ROUTE 10 BETWEEN EASTON AND TEHRAN...AND ROUTE 78 SOUTH
OF BATH.
 
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.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE 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, Sep 6, 12:45 AM CDT, 1 hour 3 minutes before
ILZ005>007-009-060700-

SPECIAL WEATHER STATEMENT...CORRECTION...
NATIONAL WEATHER SERVICE PEORIA IL
1245 AM CDT MON SEP 6 1993

...SHOWERS AND THUNDERSTORMS MOVING THROUGH WEST CENTRAL ILLINOIS...

AT 1235 AM CDT...RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS MOVING
THROUGH WESTERN AND CENTRAL ILLINOIS.  THIS BAND OF SHOWERS AND STORMS
EXTENDED FROM QUINCY TO MACOMB IN MCDONOUGH COUNTY...TO LEWISTOWN IN FULTON
COUNTY...TO PEORIA...THROUGH MCLEAN COUNTY AND INTO EASTERN ILLINOIS.  THOUGH
NONE OF THE STORMS WERE STRONG AT THIS TIME...THEY WERE PRODUCING BRIEF PERIODS
OF HEAVY RAIN WITH OCCASIONAL LIGHTNING.  MOVEMENT OF THE STORMS WAS TO THE
EAST NORTHEAST AT ABOUT 25 MPH.

DUE TO THE PREVIOUS HEAVY RAINFALL TOTALS ...ANY ADDITIONAL RAINS FALLING ON
GROUNDS ALREADY SATURATED WILL ONLY AGGRAVATE FLOODING SITUATIONS THAT SOME
AREAS ARE ALREADY FACING.   THIS IS PARTICULARLY TRUE IN MASON COUNTY WHERE
RECENT HEAVY RAINS HAVE CAUSED AND UNDERGROUND AQUIFER TO OVERFLOW AND FLOOD
PORTIONS OF THAT COUNTY AND CLOSE SOME ROADWAYS

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR ADDITIONAL
INFORMATION.

OUSLEY
Special weather statement, Sep 6, 12:46 AM CDT, 1 hour 2 minutes before
ILZ005>007-009-060700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
1245 AM CDT MON SEP 6 1993

...SHOWERS AND THUNDERSTORMS MOVING THROUGH WEST CENTRAL ILLINOIS...

AT 1235 AM CDT...RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS MOVING
THROUGH WESTERN AND CENTRAL ILLINOIS.  THIS BAND OF SHOWERS AND STORMS
EXTENDED FROM QUINCY TO MACOMB IN MCDONOUGH COUNTY...TO LEWISTOWN IN FULTON
COUNTY...TO PEORIA...THROUGH MCLEAN COUNTY AND INTO EASTERN ILLINOIS.  THOUGH
NONE OF THE STORMS WERE STRONG AT THIS TIME...THEY WERE PRODUCING BRIEF PERIODS
OF HEAVY RAIN WITH OCCASIONAL LIGHTNING.

DUE TO THE PREVIOUS HEAVY RAINFALL TOTALS ...ANY ADDITIONAL RAINS FALLING ON
GROUNDS ALREADY SATURATED WILL ONLY AGGRAVATE FLOODING SITUATIONS THAT SOME
AREAS ARE ALREADY FACING.   THIS IS PARTICULARLY TRUE IN MASON COUNTY WHERE
RECENT HEAVY RAINS HAVE CAUSED AND UNDERGROUND AQUIFER TO OVERFLOW AND FLOOD
PORTIONS OF THAT COUNTY AND CLOSE SOME ROADWAYS.
STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR ADDITIONAL
INFORMATION.

OUSLEY
Special weather statement, Sep 6, 12:51 AM CDT, 57 minutes before
ILZ005>007-009-060700-

SPECIAL WEATHER STATEMENT...CORRECTION...
NATIONAL WEATHER SERVICE PEORIA IL
1245 AM CDT MON SEP 6 1993

...SHOWERS AND THUNDERSTORMS MOVING THROUGH WEST CENTRAL ILLINOIS...

AT 1235 AM CDT...RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS MOVING
THROUGH WESTERN AND CENTRAL ILLINOIS.  THIS BAND OF SHOWERS AND STORMS
EXTENDED FROM QUINCY TO MACOMB IN MCDONOUGH COUNTY...TO LEWISTOWN IN FULTON
COUNTY...TO PEORIA...THROUGH MCLEAN COUNTY AND INTO EASTERN ILLINOIS.  THOUGH
NONE OF THE STORMS WERE STRONG AT THIS TIME...THEY WERE PRODUCING BRIEF PERIODS
OF HEAVY RAIN WITH OCCASIONAL LIGHTNING.  MOVEMENT OF THE STORMS WAS TO THE
EAST NORTHEAST AT ABOUT 25 MPH.

DUE TO THE PREVIOUS HEAVY RAINFALL TOTALS ...ANY ADDITIONAL RAINS FALLING ON
GROUNDS ALREADY SATURATED WILL ONLY AGGRAVATE FLOODING SITUATIONS THAT SOME
AREAS ARE ALREADY FACING.   THIS IS PARTICULARLY TRUE IN MASON COUNTY WHERE
RECENT HEAVY RAINS HAVE CAUSED AND UNDERGROUND AQUIFER TO OVERFLOW AND FLOOD
PORTIONS OF THAT COUNTY AND CLOSE SOME ROADWAYS

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR ADDITIONAL
INFORMATION.

OUSLEY

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.