Alert archive / Illinois / Flash Flood Warnings in 1990
Flash Flood Warning 27, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Aug 19, 1990, 6:13 PM CDT for Jo Daviess County, Illinois. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Aug 19, 1990, 6:13 PM CDT (23:13 UTC)
- Expired
- Aug 19, 1990, 8:15 PM CDT
- In force
- 2 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Jo Daviess 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, 11.2 hours before the alert went out and 290 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 531 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KRFD 192313
FFWRFD
ILC177-085-015-201-007-141-103-037-200115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ROCKFORD IL
613 PM CDT SUN AUG 19 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE NORTH CENTRAL PART OF ILLINOIS
STEPHENSON...WINNEBAGO...BOONE...OGLE...LEE...DEKALB...
IN THE NORTHWEST PART OF ILLINOIS
JO DAVIESS...CARROLL...
AT 605 PM CDT STATE POLICE REPORTED THE PECATONICA RIVER HAD
OVERFLOWED ITS BANK IN PECATONICA...15 MILES WEST OF ROCKFORD. WITH
THE HEAVY RAINFALL PRODUCED BY THUNDERSTORMS THIS EVENING...LOW
LYING AREAS...URBAN STREETS AND SWOLLEN STREAMS WILL FLOOD WITH
LITTLE OR NO WARNING.
THIS FLOOD WARNING MEANS THAT FLOODING IS AN IMMEDIATED THREAT!
PERSONS IN LOW LYING OR FLOOD PRONE AREAS MOVE TO HIGHER GROUND..
IF YOU ARE IN AREAS WHERE YOU ARE NOT FAMILIAR... BE EXTREMELY
CAUTIOUS AND CONSIDER HEADING FOR HIGHER GROUND. IF CAMPING OR
IN A CAR WATCH FOR RAPIDLY RISING WATER THAT MAY ENDANGER YOUR
CAMPSITE OR CUT OFF ESCAPE ROUTES. DO NOT CROSS ROADS COVERED
BY WATER... THE ROAD MAY BE WASHED OUT OR THE WATER MUCH DEEPER
THAN YOU THINK! REMEMBER THESE FLOODS HAPPEN RAPIDLY... BE ALERT!
ATTN: ISP DIST [1..2..16 PETROVICHWhat 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, Aug 19, 1:27 PM CDT, 4 hours 46 minutes before
ILZ004-IAZ015-191500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 855 AM CDT SUN AUG 19 1990 RADAR WAS SHOWING AN AREA OF SHOWERS AND THUNDERSTORMS MOVING FROM SOUTHCENTRAL IOWA INTO EAST-CENTRAL PORTIONS OF THE STATE. AT 845 AM CDT THE EASTERN EDGE OF THE RAIN EXTENDED FROM JUST WEST OF CEDAR RAPIDS AND IOWA CITY SOUTH TO MT. PLEASANT IN HENRY COUNTY OF IOWA. THE AREA WAS MOVING TO THE NORTHEAST AT 30 MPH AND MAY BRING BRIEF PERIODS OF HEAVY RAIN AND GUSTY WINDS AS IT MOVES THROUGH HENRY... DES MOINES...LOUISA...MUSCATINE...AND CEDAR COUNTIES OF IOWA OVER THE NEXT HOUR TO TWO HOURS. COOPER
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.