Alert archive / Illinois / Flash Flood Warnings in 1990
Flash Flood Warning 21, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Jun 29, 1990, 11:02 AM CDT for Henry County, Rock Island County, Whiteside County, Illinois; Clinton County, Iowa. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 29, 1990, 11:02 AM CDT (16:02 UTC)
- Expired
- Jun 29, 1990, 2:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
Counties Clinton County, IA, Henry County, IL, Rock Island County, IL, Whiteside 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 4.0 hours before the alert went out and 364 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.
- Mixed-layer CAPE
- 249 J/kg
- Mixed-layer CIN
- -194 J/kg
- Mixed-layer LCL
- 597 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMLI 291602
FFWMLI
IAC163-045-ILC161-073-195-291900-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOLINE IL
1102 AM CDT FRI JUN 29 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 200 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE EXTREME EAST PART OF IOWA
SCOTT...CLINTON...
IN THE NORTHWEST PART OF ILLINOIS
ROCK-ISLAND...HENRY...WHITESIDE...
AT 11 AM CDT THUNDERSTORMS CONTINUE OVER EXTREME EASTERN IA AND
NORTHWEST ILLINOIS. ADDITIONAL RAINFALLS OF 1 TO 2 INCHES HAVE
FALLEN AT MID MORNING WITH MOST STREAMS AND CREEKS OUT OF THEIR
BANKS AND MANY RURAL ROADS CLOSED.
AT 11 AM DUCK CREEK HAS CRESTED AT DIVISION STREET IN DAVENPORT
BUT STILL RISING DOWN STREAM.
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 SM*ALL ONE...ON FOOT.
IF TIME PERMITS...ASK THE NEAREST LAW ENFORECMENT AGENCY TO RELAY
YOUR REPORT OF FLOODING TO THE NATIONAL WEATHER SERVICE.
ATTN ISP 7 AND 1
KRAEMER/MYERThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 1:31 AM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess, Stephenson | 59 min |
| Jun 29, 3:04 AM CDT | Severe Thunderstorm Warning | DVN | Henry | 41 min |
| Jun 29, 3:30 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Rock Island | 30 min |
| Jun 29, 4:23 AM CDT | Flash Flood Warning | DVN | Rock Island | 4 hr |
| Jun 29, 4:23 AM CDT | Flash Flood Warning | DVN | Henry | 4 hr |
| Jun 29, 8:03 AM CDT | Flash Flood Warning | DVN | Henry, Rock Island, Whiteside | 3 hr |
| Jun 29, 8:03 AM CDT | Flash Flood Warning | DVN | Clinton, Scott | 3 hr |
| Jun 29, 11:02 AM CDT | Flash Flood Warning | DVN | Scott | 3 hr |
Nearby
Flash Flood Warnings in Illinois, 1990Flash Flood Warnings in Iowa, 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.