Alert archive / Illinois / Flash Flood Warnings in 1990

Flash Flood Warning 4, NWS Lincoln, IL

March 10, 1990McLean County, Illinois

NWS Lincoln, IL issued this flash flood warning at Mar 10, 1990, 1:26 PM CST for McLean County, Illinois. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Mar 10, 1990, 1:26 PM CST (19:26 UTC)
Expired
Mar 10, 1990, 3:30 PM CST
In force
2 hr
Issued by
NWS Lincoln, IL
Area
Whole counties

County McLean 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, 7.4 hours before the alert went out and 381 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 1990-03-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 859 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, Paducah/Barkley, KY at 12:00Z on 1990-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 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
859 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPIA 101926
FFWPIA
ILC143-179-123-203-113-102130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE PEORIA IL
126 PM CST SAT MAR 10 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 330 PM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE CENTRAL PART OF ILLINOIS
      EASTERN AND NORTHEAST PEORIA...NORTHERN TAZEWELL...
      MARSHALL...WOODFORD...MCLEAN

AT 120 PM CST SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN
CONTINUED TO BRING STREAMS AND CREEKS TO FLOOD LEVEL THROUGHOUT
CENTRAL ILLINOIS.

THERE HAVE BEEN NUMEROUS REPORTS OF CREEKS OVER THEIR BANKS IN
NORTHEASTERN PEORIA...NORTHERN TAZEWELL AND THROUGHOUGHT MARSHALL
AND WOODFORD COUNTIES OF CENTRAL ILLINOIS.

IF YOU ARE IN THE WARNED COUNTY IN AN AREA SUBJECT TO FLOODING
MOVE TO HIGHER GROUND.

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

ATTN ISP DIST 6 AND 8

NADOLSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 10, 12:00 PM CSTSevere Thunderstorm WarningILXPeoria30 min
Mar 10, 12:11 PM CSTFlash Flood WarningILXPeoria64 min
Mar 10, 1:06 PM CSTFlash Flood WarningILXMarshall, Woodford2 hr
Mar 10, 1:26 PM CSTFlash Flood WarningILXMarshall, Peoria, Tazewell, Woodford2 hr
Mar 10, 4:54 PM CSTSevere Thunderstorm WarningILXHancock, McDonough, Schuyler51 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.