Alert archive / Illinois / Flash Flood Warnings in 1994

Flash Flood Warning 3, NWS Quad Cities, IA

July 14, 1994Henry County, Illinois

NWS Quad Cities, IA issued this flash flood warning at Jul 14, 1994, 4:31 AM CDT for Henry County, Illinois. It was in force for 119 min.

The area

The counties it named.

The facts

Issued
Jul 14, 1994, 4:31 AM CDT (09:31 UTC)
Expired
Jul 14, 1994, 6:30 AM CDT
In force
119 min
Issued by
NWS Quad Cities, IA
Area
Whole counties

County Henry County, IL

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 9.5 hours before the alert went out and 385 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 1994-07-14Temperature 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 1994-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 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
1222 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
25 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 KMLI 140931
FFWMLI
ILC073-141130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE MOLINE IL
431 AM CDT THU JUL 14 1994

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 630 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE NORTHWEST PART OF ILLINOIS
      CENTRAL HENRY

AT 425 AM...POLICE REPORTED FLOODING IN ORION...IN WEST CENTRAL
HENRY COUNTY ILLINOIS. THUNDERSTORMS PRODUCING THIS FLOODING ARE
MOVING TO THE NORTHEAST AT 20 MPH...AND WILL BE OVER EASTERN
HENRY COUNTY BY 5 AM.

FLASH FLOOD WARNING MEANS FLASH FLOODING IS OCCURRING OR IS
IMMINENT IN THE SPECIFIED AREA.

PERSONS ALONG OR NEAR STREAMS SUBJECT TO FLASH FLOODING OR SHARP
RISES SHOULD BE PREPARED TO MOVE TO A PLACE OF SAFETY IMMEDIATELY.

MOST FLASH FLOOD DEATHS OCCUR 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.

IF TIME PERMITS...ASK THE NEAREST LAW ENFORECMENT AGENCY TO RELAY
YOUR REPORT OF FLOODING TO THE NATIONAL WEATHER SERVICE.

BELL 0930Z

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 14, 3:00 AM CDT, 1 hour 31 minutes before
ILZ009-015-016-024-IAZ065>068-078-088-089-099-140900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOLINE IL
300 AM CDT THU JUL 14 1994

...THUNDERSTORMS WITH HEAVY RAIN WILL CONTINUE OVER ROCK ISLAND...HENRY
   COUNTY ILLINOIS AND WHITESIDE...

THUNDERSTORMS WITH HEAVY RAINFALL WILL CONTINUE OVER NORTHEAST ROCK
ISLANDAND ..NORTHWEST HENRY COUNTY ILLINOIS THROUGH 4 AM. THESE STORMS
ARE MOVING TO THE NORTHEAST AT 20 MPH AND ARE EXPECTED TO ENTER WHITESIDE
COUNTY ILLINOIS BY 4 AM.

THIS HEAVY RAINFALL WILL DRASTICALLY REDUCE VISIBILITY. DO NOT TRY DRIVING
ACROSS ANY FLOODED ROADS. PLEASE REPORT ANY FLOODING TO YOUR LOCAL LAW
ENFORCEMENT AGENCIES FOR RELAY TO THE NATIONAL WEATHER SERVICE.

BELL
Special weather statement, Jul 14, 3:05 AM CDT, 1 hour 26 minutes before
ILZ009-015-016-024-IAZ065>068-078-088-089-099-140900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOLINE IL
300 AM CDT THU JUL 14 1994

...THUNDERSTORMS WITH HEAVY RAIN WILL CONTINUE OVER ROCK ISLAND...HENRY
   COUNTY ILLINOIS AND WHITESIDE...

THUNDERSTORMS WITH HEAVY RAINFALL WILL CONTINUE OVER NORTHEAST ROCK
ISLANDAND ..NORTHWEST HENRY COUNTY ILLINOIS THROUGH 4 AM. THESE STORMS
ARE MOVING TO THE NORTHEAST AT 20 MPH AND ARE EXPECTED TO ENTER WHITESIDE
COUNTY ILLINOIS BY 4 AM.

THIS HEAVY RAINFALL WILL DRASTICALLY REDUCE VISIBILITY. DO NOT TRY DRIVING
ACROSS ANY FLOODED ROADS. PLEASE REPORT ANY FLOODING TO YOUR LOCAL LAW
ENFORCEMENT AGENCIES FOR RELAY TO THE NATIONAL WEATHER SERVICE.

BELL

Nearby

Flash Flood Warnings in Illinois, 1994Every flash flood warning in 1994

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.