Alert archive / Wisconsin / Flash Flood Warnings in 1990
Flash Flood Warning 11, NWS Green Bay, WI
NWS Green Bay, WI issued this flash flood warning at Aug 18, 1990, 8:43 PM CDT for Iowa County, Wisconsin. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 18, 1990, 8:43 PM CDT (01:43 UTC)
- Expired
- Aug 18, 1990, 11:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Green Bay, WI
- Area
- Whole counties
County Iowa County, WI
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 00:00Z, 1.7 hours before the alert went out and 232 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 552 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 300 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSN 190143
FFWMSN
WIC049-190445-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MADISON WI
843 PM CDT SAT AUG 18 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 1145 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE SOUTH CENTRAL PART OF WISCONSIN
WESTERN IOWA
AT 834PM CDT AN IOWA COUNTY SHERIFFS OFFICER NEAR BLANCHARDVILLE
REPORTED THE PECATONICA NEAR ITS BANKS. WITH THE HEAVY RAINS AND
STORMS UP RIVER...MORE HEAVY RAINFALLS SHOULD ADD TO THE ALREADY
HEAVY LADEN RIVER.
SHOULD WATERS REACH FLOOD LEVEL...SEEK HIGH GROUND AND MOTORIST
SHOULD AVOID ANY ROADS CROSSING THE PECATONICA RIVER TONIGHT.
A FLASH FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT.
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.
TO ESCAPE RISING WATER MOVE TO HIGHER GROUND.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOOD WATERS. IF FLASH FLOODING IS OBSERVED...
ACT QUICKLY. MOVE TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
STIMACHWhat 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 18, 4:31 PM CDT, 4 hours 12 minutes before
WIZ005-008-012-013-190000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 430 PM CDT SAT AUG 18 1990 ...FLASH FLOOD WATCH FOR NORTHEAST AND EAST CENTRAL WISCONSIN THIS EVENING AND TONIGHT SOUTHWEST OF A LINE FROM GREEN BAY TO SHAWANO TO NEOPIT... AT 430 PM RADAR INDICATED SHOWERS AND THUNDERSTORMS OVER NORTHERN AND NORTHEAST WISCONSIN. THE RAIN AREA EXTENDED FROM KEWAUNEE COUNTY THROUGH THE GREEN BAY AREA TO SHAWANO AND PORTAGE COUNTIES. THE STRONGEST STORMS WERE IN MARINETTE COUNTY BETWEEN PESHTIGO AND POUND...AND A LINE OF STRONG THUNDERSTORMS IN LANGLADE...MARATHON AND INTO CLARK COUNTIES. THE ENTIRE RAIN AREA IS MOVING TO THE EAST-SOUTHEAST AT 30 MILES AN HOUR. THE^SE THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE VERY HEAVY RAINFALLS. THE FLASH FLOOD WATCH INCLUDES THE NORTHEAST WISCONSIN COUNTIES OF: MENOMINEE...SHAWANO...WAUPACA...OUTAGAMIE...BROWN...WINNEBAGO AND CALUMET.
Special weather statement, Aug 18, 5:32 PM CDT, 3 hours 11 minutes before
WIZ008-012-013-182345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 520 PM CDT SAT AUG 18 1990 ...HEAVY THUNDERSTORMS MOVING INTO WINNEBAGO...WAUPACA AND OUTAGAMIE COUNTIES... AT 510 PM RADAR INDICATED A CLUSTER OF HEAVY THUNDERSTORMS OVER WAUSHARA AND GREEN LAKE COUNTIES NEAR THE TOWNS OF BERLIN AND REDGRANITE EXTENDING TO AMHERST JUNCTION IN PORTAGE COUNTY. THIS IS ABOUT 25 TO 35 MILES SOUTH- EAST OF GREEN BAY. THE STORMS WERE MOVING SOUTHWEST AT 30 MPH AND WILL BE MOVING INTO WINNEBAGO...WAUPACA AND OUTAGAMIE COUNTIES BY 6 PM. THE MAIN THREAT WITH THESE STORMS WILL BE FROM HEAVY RAINFALL...ALTHOUGH DANGEROUS LIGHTNING AND STRONG GUSTY WINDS WILL ALSO BE LIKELY WITH SOME OF THE STRONGER STORMS. PEOPLE IN THE PATH OF THESE STORMS SHOULD BE ALERT FOR THREATENING WEATHER CONDITIONS. MECIKALSKI
Special weather statement, Aug 18, 5:35 PM CDT, 3 hours 8 minutes before
WIZ008-012-013-182345- SPECIAL WEATHER STATEMENT...CORRECTION... NATIONAL WEATHER SERVICE GREEN BAY WI 520 PM CDT SAT AUG 18 1990 ...HEAVY THUNDERSTORMS MOVING INTO WINNEBAGO...WAUPACA AND OUTAGAMIE COUNTIES... AT 510 PM RADAR INDICATED A CLUSTER OF HEAVY THUNDERSTORMS OVER WAUSHARA AND GREEN LAKE COUNTIES NEAR THE TOWNS OF BERLIN AND REDGRANITE EXTENDING TO AMHERST JUNCTION IN PORTAGE COUNTY. THIS IS ABOUT 25 TO 35 MILES SOUTH- WEST OF GREEN BAY. THE STORMS WERE MOVING EAST-SOUTHEAST AT 30 MPH AND WILL BE MOVING INTO WINNEBAGO...WAUPACA AND OUTAGAMIE COUNTIES BY 6 PM. THE MAIN THREAT WITH THESE STORMS WILL BE FROM HEAVY RAINFALL...ALTHOUGH DANGEROUS LIGHTNING AND STRONG GUSTY WINDS WILL ALSO BE LIKELY WITH SOME OF THE STRONGER STORMS. PEOPLE IN THE PATH OF THESE STORMS SHOULD BE ALERT FOR THREATENING WEATHER CONDITIONS. MECIKALSKI
Special weather statement, Aug 18, 6:48 PM CDT, 1 hour 55 minutes before
WIZ008-012-190030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 645 PM CDT SAT AUG 18 1990 ...HEAVY THUNDERSTORMS MOVING INTO WINNEBAGO COUNTY... AT 645 PM RADAR INDICATED AN AREA OF HEAVY THUNDERSTORMS OVER WAUSHARA COUNTY. THESE STORMS ARE MOVING TO THE SOUTHEAST AT AROUND 30 MILES AN HOUR AND WILL MOVE INTO SOUTHWEST WINNEBAGO COUNTY BY 715 PM. HEAVY RAINS...STRONG WINDS...AND SMALL HAIL ARE LIKELY WITH THESE THUNDERSTORMS. MINOR STREET AND URBAN FLOODING IS ALSO POSSIBLE.
The office that day
Everything else NWS Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 5:55 PM CDT | Severe Thunderstorm Warning | GRB | Rock | 35 min |
| Aug 19, 6:33 PM CDT | Flash Flood Warning | GRB | Green | 6 hr |
Nearby
Flash Flood Warnings in Wisconsin, 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.