Alert archive / Illinois / Flash Flood Warnings in 1990

Flash Flood Warning 22, NWS Lincoln, IL

June 20, 1990Macoupin County, Morgan County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 20, 1990, 8:05 AM CDT for Macoupin County, Morgan County, Illinois. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 20, 1990, 8:05 AM CDT (13:05 UTC)
Expired
Jun 20, 1990, 11:30 AM CDT
In force
3 hr
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Macoupin County, IL, Morgan County, IL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 1.1 hours before the alert went out and 294 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 12:00Z on 1990-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3475 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Paducah/Barkley, KY at 12:00Z on 1990-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 298 square meters per square second.19395878Sfc1 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
3475 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
778 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
298 m²/s²
0-3 km storm-relative helicity
311 m²/s²
Significant tornado parameter
0.0
Supercell composite
9.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSPI 201308
FFWSPI
ILC017-137-117-129-167-021-135-201630-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD IL
805 AM CDT WED JUN 20 1990

THE NATIONAL WEATHER SERVICE HAS EXTENDED THE FLASH FLOOD WARNING
EFFECTIVE UNTIL 1130 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES

   IN THE CENTRAL PART OF ILLINOIS
      CASS...MORGAN...MACOUPIN...MENARD...SANGAMON...
      CHRISTIAN...MONTGOMERY

RAINFALL IN EXCESS OF THREE INCHES HAS BEEN REPORTED SINCE MIDNIGHT.
SHOWERS AND THUNDERSTORMS ARE CONTINUING OVER THE WEST CENTRAL POR/
TIONS OF ILLINOIS

MORGAN COUNTY SHERIFF REPORTS SEVERAL ROADS REMAIN CLOSED WITH SOUTH
JACKSONVILLE AND FRANKLIN REPORTING SIGNIFICANT FLOODING PROBLEMS.
THIS AREA IS 30  TO 35 MILES WEST TO SOUTHWEST OF SPRINGFIELD.

SEVERAL ROADS REMAINED CLOSED IN SPRINGFIELD THIS MORNING.


STAY OUT OF DRY CREEK BEDS AND LOW LYING AREAS.  FLASH FLOODS CAN
OCCUR WITH LgITTLE OR NO ADVANCE WARNING.

DO NOT ATTEMPT TO DRIVE OVER ROADS COVERED BY FLOOD WATERS.

 ATTN ISP DIST...9AND 18
 FENLEY

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, Jun 20, 4:26 AM CDT, 3 hours 39 minutes before
ILZ005-006-007-009-200335-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
420 AM CST WED JUN 20 1990

...SEVERE THUNDERSTORM WATCH NUMBER 508 HAS BEEN CANCELLED FOR PUTNAM...
MARSHALL...WOODFORD AND MCLEAN COUNTIES.  THUNDERSTORMS ARE STILL
OCCURRING IN THESE AREAS BUT HAVE WEAKENED.
...SEVERE THUNDERSTORM WATCH 509  REMAINS IN EFFECT FOR TAZEWELL...
PEORIA...MASON...FULTON...SCHUYLER...MCDONOGH...HENDERSON AND WARREN
COUNTIES.  THE HEAVIEST STORMS CURRENTLY IN THE THOSE COUNTIES WAS IN
SOUTHERN SCHUYLER.

...THE FLASH FLOOD WARNING FOR FULTON AND TAZEWELL COUNTIES EXPIRES
AT 430AM.
...THE FLASH FLOOD WARNING FOR WOODFORD COUNTY CONTINUES IN EFFECT
UNTIL 500AM.
...THE FLASH FLOOD WARNING FOR SCHUYLER COUNTY CONTINUES IN EFFECT
UNTIL 515AM.
.
AT 420AM THE HEAVIEST THUNDERSTORMS IN CENTRAL ILLINOIS WERE GENERALLY
SOUTH OF A LINE FROM PONTIAC TO PEORIA TO BURLINGTON.  THEY WERE
MOVING SOUTHEAST AT ABOUT 40 MPH.

ARMBRUST
Special weather statement, Jun 20, 4:43 AM CDT, 3 hours 22 minutes before
ILZ005-006-007-009-201100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
440AM CDT WED JUN 20 1990

...SEVERE THUNDERSTORM WATCHES 508 AND 509 HAVE BEEN CANCELED FOR
CENTRAL ILLINOIS.
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500AM FOR WOODFORD
COUNTY.
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515AM FOR SCHUYLER
AND MCDONOUGH COUNTIES.

THE  THUNDERSTORMS IN CENTRAL ILLINOIS HAVE DECREASED IN INTENSITY
AS FAR AS THE THREAT OF HIGH WINDS OR HAIL...HOWEVER DANGEROUS
LIGHTNING AND HEAVY RAINS ARE STILL BEING REPORTED.

PERSONS SHOULD STILL BE ON THE LOOKOUT FOR THE POSSIBILITY OF
FLOODING OF SMALL STREAMS...STREETS AND HIGHWAYS.

ARMBRUST
Special weather statement, Jun 20, 5:39 AM CDT, 2 hours 26 minutes before
ILZ009-010-201130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
535 AM CDT WED JUN 20 1990

...FLASH FLOODING WARNING REMAINS IN EFFECT FOR MUCH OF CENTRAL
   ILLINOIS UNTIL 815 AM CDT...

AT 530 AM CDT WEATHER RADARS CONTINUE TO SHOW A LARGE AREA OF SHOWERS
AND THUNDERSTORMS SOUTH OF A LINE FROM BURLINGTON IOWA TO PEORIA TO
NEAR TERRE HAUTE INDIANA. THE STRONGEST STORMS WERE SOUTHWEST OF
SPRINGFIELD IN MACOUPIN AND MONTGOMERY COUNTIES. HEAVY RAINFALL AMOUNTS
CONTINUE OVER MUCH OF THE AREA WITH 2 TO 4 INCHES OF RAINFALL IN MANY
AREAS.

THE STORMS WERE MOVING EAST AND SOUTHEAST AT 30 MPH.
HILLIARD
ATTN ISP DIST..9..10..6..12..18
Special weather statement, Jun 20, 7:48 AM CDT, 17 minutes before
ILZ006-007-201500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
745 AM CDT WED JUN 20 1990

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR MCDONOUGH...MASON...
SCHUYLER AND SOUTHERN FULTON COUNTIES IN CENTRAL AND WEST CENTRAL
ILLINOIS.  IT IS IN EFFECT UNTIL 830AM.

RAIN SHOWERS...NOW MOSTLY LIGHT...AND A FEW THUNDERSTORMS CONTINUE OVER
CENTRAL ILLINOIS.   THE RAIN AREA WAS GENERALLY SOUTH OF LINE FROM
BURLINGTON IOWA TO 40 MILES NORTHWEST OF PEORIA TO LAFAYETTE INDIANA.
IT WAS MOVING EAST AT AROUND 30 MPH.

IN EASTERN SCHUYLER COUNTY THE TOWN OF BLUFF CITY WAS EVACUATED EARLIER
THIS MORNING.  A LEVEE THERE WAS THREATENED BY FLOOD WATERS.  THAT
LEVEE IS REPORTED AS HOLDING.

ALSO MOST ROADS IN SCHUYLER COUNTY ARE REPORTED AS PARTIALLY CLOSED
DUE TO STANDING WATER.
.
PERSONS SHOULD NOT RETURN TO ANY AREA THAT HAS BEEN EVACUATED UNTIL
THEY ARE INFORMED THAT IT IS SAFE TO DO SO.

SOME EARLY RAINFALL AMOUNTS AROUND XTHE AREA OF CENTRAL ILLINOIS...
AT CHENOA 2.07...AT CHILLICOTHE 3.80...AT LAHARPE 4.10 AND AT
MACOMB 3.70.  AT PEORIA WE HAVE HAD 1.79.

ARMBRUST

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 9:55 PM CDTSevere Thunderstorm WarningILXKnox, Peoria, Stark65 min
Jun 19, 10:05 PM CDTSevere Thunderstorm WarningILXBureau55 min
Jun 19, 10:17 PM CDTSevere Thunderstorm WarningILXLee43 min
Jun 19, 10:48 PM CDTTornado WarningILXPeoria, Woodford27 min
Jun 19, 10:56 PM CDTSevere Thunderstorm WarningILXDeKalb49 min
Jun 19, 11:08 PM CDTTornado WarningILXKnox37 min
Jun 19, 11:41 PM CDTSevere Thunderstorm WarningILXFulton, McDonough, Warren64 min
Jun 19, 11:50 PM CDTFlash Flood WarningILXKnox, Peoria, Warren4 hr
Jun 20, 12:47 AM CDTSevere Thunderstorm WarningILXMcLean, Tazewell58 min
Jun 20, 1:06 AM CDTTornado WarningILXSchuyler39 min
Jun 20, 1:10 AM CDTSevere Thunderstorm WarningILXLogan, Menard65 min
Jun 20, 1:39 AM CDTFlash Flood WarningILXFulton, Tazewell3 hr
Jun 20, 1:40 AM CDTSevere Thunderstorm WarningILXMacon65 min
Jun 20, 2:00 AM CDTFlash Flood WarningILXWoodford3 hr
Jun 20, 2:01 AM CDTSevere Thunderstorm WarningILXMoultrie, Shelby59 min
Jun 20, 2:06 AM CDTFlash Flood WarningILXSangamon3 hr
Jun 20, 2:18 AM CDTFlash Flood WarningILXMcDonough, Schuyler3 hr
Jun 20, 2:30 AM CDTSevere Thunderstorm WarningILXChristian60 min
Jun 20, 2:44 AM CDTSevere Thunderstorm WarningILXColes, Edgar61 min
Jun 20, 3:06 AM CDTSevere Thunderstorm WarningILXClark, Cumberland69 min
Jun 20, 3:31 AM CDTFlash Flood WarningILXClark, Coles, Cumberland3 hr
Jun 20, 3:31 AM CDTFlash Flood WarningILXEdgar3 hr
Jun 20, 5:09 AM CDTFlash Flood WarningILXCass, Menard, Sangamon3 hr
Jun 20, 5:09 AM CDTFlash Flood WarningILXMacoupin, Montgomery, Morgan3 hr
Jun 20, 5:09 AM CDTFlash Flood WarningILXChristian3 hr
Jun 20, 5:27 AM CDTFlash Flood WarningILXFulton, McDonough, Schuyler3 hr
Jun 20, 5:27 AM CDTFlash Flood WarningILXMason3 hr
Jun 20, 8:05 AM CDTFlash Flood WarningILXChristian, Montgomery, Sangamon3 hr
Jun 20, 8:05 AM CDTFlash Flood WarningILXCass, Menard3 hr
Jun 20, 8:30 AM CDTFlash Flood WarningILXFulton, McDonough, Mason, Schuyler110 min
Jun 20, 9:00 AM CDTFlash Flood WarningILXFulton, McDonough, Schuyler90 min
Jun 20, 9:00 AM CDTFlash Flood WarningILXMason90 min

Nearby

Flash Flood Warnings in Illinois, 1990Every flash flood warning in 1990

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.