Alert archive / Wisconsin / Flash Flood Warnings in 1991
Flash Flood Warning 1, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Jul 17, 1991, 6:49 PM CDT for La Crosse County, Wisconsin. It was in force for 91 min.
The area
The counties it named.
The facts
- Issued
- Jul 17, 1991, 6:49 PM CDT (23:49 UTC)
- Expired
- Jul 17, 1991, 8:20 PM CDT
- In force
- 91 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties
County La Crosse County, WI
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 11.8 hours before the alert went out and 224 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
- 2574 J/kg
- Mixed-layer CIN
- -125 J/kg
- Mixed-layer LCL
- 983 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KLSE 172349
FFWLSE
WIC063-180345-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
649 PM CDT WED JUL 17 1991
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
IN WEST CENTRAL WISCONSIN
...SOUTHERN LA CROSSE COUNTY
AT 645 PM...PAMMEL CREEK HAD RISEN TO FLOOD STAGE IN LA CROSSE.
WHILE THE RAIN THAT HAS FALLEN SO FAR IS NOT ENOUGH TO CAUSE MAJOR
FLOODING PROBLEMS...HEAVY RAIN IS AGAIN MOVING INTO SOUTHERN PORTIONS
OF LA CROSSE COUNTY. ADDITIONAL HEAVY RAIN COULD CAUSE FLASH FLOODING
IN SOUTHERN LA CROSSE COUNTY...PARTICULARLY ALONG PAMMEL CREEK.
PEOPLE IN LA CROSSE...AND SOUTHERN LA CROSSE COUNTY SHOULD BE PREPARED
TO TAKE QUICK ACTION...AND TO MOVE TO HIGH GROUND SHOULD WATER
BEGIN TO RISE. ANYONE LIVING NEAR SMALL STREAMS SHOULD BE PREPARED
TO EVACUATE AT A MOMENTS NOTICE IF NECESSARY.
DOm NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
BRUCE
NNNNWhat 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 17, 1:34 PM CDT, 5 hours 15 minutes before
WIZ010-014-172000- SPECIAL WEATHER STATEMENT AND AREA WEATHER UPDATE NATIONAL WEATHER SERVICE LA CROSSE WI 135 PM CDT WED JUL 17 1991 ...SEVERE THUNDERSTORM WATCH FOR BUFFALO COUNTY UNTIL 700 PM... AT 130 PM...THUNDERSTORMS CONTINUED OVER PARTS OF WEST CENTRAL AND SOUTHWEST WISCONSIN. MOST OF THE PRECIPITATION WAS NORTHEAST OF A LINE FROM VIROQUA...TO LA CROSSE...TO ALMA...OR 50 MILES NORTHWEST OF LA CROSSE. THE STRONGEST STORMS...PRODUCING HEAVY RAIN...WERE NEAR BLAIR...OR 35 MILES NORTH OF LA CROSSE...AND OVER EXTREME NORTHWEST BUFFALO COUNTY JUST SOUTHEAST OF DURAND. INDIVIDUAL THUNDERSTORMS ARE MOVING SOUTHEAST AT 20 MILES AN HOUR... BUT THE AREA OF PRECIPITATION IS MOVING SLOWLY NORTHEAST AT 10 MILES AN HOUR. SHOWERS AND THUNDERSTORMS WILL CONTINUE THIS AFTERNOON TO THE NORTH AND EAST OF LA CROSSE. HOWEVER...SUNSHINE...AND VERY WARM HUMID AIR IS JUST TO THE SOUTH OF THE CITY. THIS MUGGY AIR WILL SPREAD INTO THE IMMESDIATE LA CROSSE AREA BY MID-AFTERNOON...AND TEMPERATURES WILL WARM RAPIDLY INTO THE 80S. BRUCE
Special weather statement, Jul 17, 2:47 PM CDT, 4 hours 2 minutes before
WIZ010-014-172045- SPECIAL WEATHER STATEMENT AND AREA WEATHER UPDATE NATIONAL WEATHER SERVICE LA CROSSE WI 245 PM CDT WED JUL 17 1991 ...SEVERE THUNDERSTORM WATCH FOR BUFFALO COUNTY NORTHWEST OF LA CROSSE UNTIL 700 PM... AT 245 PM...SHOWERS AND THUNDERSTORMS EXTENDED IN A 40 MILE WIDE BAND ACROSS WEST CENTRAL WISCONSIN FROM 45 MILES SOUTHEAST OF LA CROSSE NEAR HILLSBORO TO 55 MILES NORTHWEST OF LA CROSSE NEAR NELSON WISCONSIN AND WAS MOVING LITTLE. NO SEVERE WEATHER HAS BEEN REPORTED IN WEST CENTRAL WISCONSIN...BUT LOCALLY HEAVY RAIN HAS BEEN OCCURRING IN ADJACENT AREAS NORTH OF LA CROSSE. SHOWERS AND THUNDERSTORMS WILL CONTINUE THE REST OF THE AFTERNOON MAINLY IN AREAS NORTH AND EA0ST OF LA CROSSE WHERE TEMPERATURES SHOULD STAY IN THE 70S. SUNSHINE ALONG WITH HOT AND HUMID AIR WILL BE IN ADJACENT AREAS TO OUR SOUTH WHERE TEMPERATURES WILL BE IN THE 90S. THOMPSON
Special weather statement, Jul 17, 3:38 PM CDT, 3 hours 11 minutes before
WIZ010-014-172145- SPECIAL WEATHER STATEMENT AND AREA WEATHER UPDATE NATIONAL WEATHER SERVICE LA CROSSE WI 335 PM CDT WED JUL 17 1991 ...SEVERE THUNDERSTORM WATCH FOR BUFFALO COUNTY NORTHWEST OF LA CROSSE UNTIL 700 PM... AT 335 PM...SHOWERS AND THUNDERSTORMS EXTENDED IN A 40 MILE WIDE BAND ACROSS WEST CENTRAL WISCONSIN FROM 45 MILES SOUTHEAST OF LA CROSSE NEAR HILLSBORO TO 55 MILES NORTHWEST OF LA CROSSE NEAR MONDOVI WISCONSIN. THE BAND OF RAIN HAS BEEN MOVING LITTLE. NO SEVERE WEATHER HAS BEEN REPORTED IN THE LA CROSSE AREA...BUT LOCALLY HEAVY RAIN HAS BEEN OCCURRING. MOTORISTS ARE ADIVSED TO USE CAUTION AND EXPECT PONDING OF WATER ON STREETS...ESPECIALLY IN URBAN AREAS AS SHOWERS AyND THUNDERSTORMS WILL CONTINUE INTO THE EVENING. THOMPSON
Special weather statement, Jul 17, 4:49 PM CDT, 2 hours before
MNZ018-019-172230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER MN 440 PM CDT WED JUL 17 1991 ...THUNDERSTORMS WITH VERY HEAVY RAINS CONTINUED ALONG THE MISSISSIPPI RIVER... AT 440 PM CDT THUNDERSTORMS WITH VERY HEAVY RAIN WERE OCCURRING ALONG THE MISSISSIPPI RIVER FROM WABASHA MINNESOTA TO LA CROSSE WISCONSIN. THE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. BOATERS...FISHERMEN... CAMPERS...AND OTHER OUTDOOR ENTHUSIASTS IN THIS AREA SHOULD BE PREPARED FOR HEAVY RAIN AND DANGEROUS LIGHTNING. THESE THUNDERSTORMS WERE PART OF A LARGE AREA OF SHOWERS AND THUNDERSTORMS WHICH EXTENDED FROM ST. CLOUD AND MILLE LACS LAKE AREA SOUTHEAST TO STILLEWATER...RED WING ...WABASHA...AND WINONA MINNESOTA. THIS AREA EXTENDED EAST INTO WISCONSIN TO LA CROSSE...TOMAH...WHITEHALL... WHEELER...CUMBERLAND...AND SIREN. THE AREA WAS MOVING EAST AT 30 MPH. SCATTERED LIGHT RAIN SHOWERS WERE INDICATED IN SOUTH CENTRAL MINNESOTA NEAR MANKATO AND WASECA. SCS
Nearby
Flash Flood Warnings in Wisconsin, 1991Every flash flood warning in 1991
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.