Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 125, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Jul 17, 1997, 4:45 AM CDT for Houston County, Minnesota; La Crosse County, Wisconsin. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 17, 1997, 4:45 AM CDT (09:45 UTC)
- Expired
- Jul 17, 1997, 5:30 AM CDT
- In force
- 45 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties
Counties Houston County, MN, La Crosse County, WI
The radar
The La Crosse radar (KARX), 10 km from the middle of the area, began a volume at 09:46 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 17, 1:30 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 9.8 hours before the alert went out and 217 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
- 2132 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1981 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 127 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 KLSE 170948 RRA
SVRLSE
MNC055-WIC063-171030-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
445 AM CDT THU JUL 17 1997
* SEVERE THUNDERSTORM WARNING FOR
LA CROSSE COUNTY - WEST CENTRAL WISCONSIN
HOUSTON COUNTY - SOUTHEASTERN MINNESOTA
* UNTIL 530 AM CDT
* SOME LOCATIONS AFFECTED
LA CROSSE
HOUSTON
* AT 445 AM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF SEVERE THUNDERSTORMS FROM 30 MILES NORTHWEST OF LA CROSSE TO
50 WEST OF LA CROSSE. THIS LINE OF STORMS WAS MOVING SOUTHEAST AT
35 MPH.
* THESE STORMS WILL BE NEAR LA CROSSE BY 505 AM.
THE MAIN THREAT FROM THESE STORMS IS DAMAGING WINDS. DO NOT GO
OUTDOORS.
RIECK/THOMPSONWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS La Crosse, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 17, 2:15 AM CDT, 2 hours 30 minutes earlier.
Area forecast discussion, Jul 17, 2:15 AM CDT, 2 hours 30 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LA CROSSE WI 215 AM CDT THU JUL 17 1997 FORECAST PROBLEMS THROUGH TODAY...THUNDERSTORM CHANCES AND INTENSITY. IN SEVERE WEATHER MODE EARLY THIS MORNING. AT 07Z...A SURFACE TROUGH/CONVERGENCE BOUNDARY WAS LOCATED FROM NEAR KDLL TO SOUTH OF KEAU TO NEAR KMSP WEST TO SD. STRONG TO SEVERE CONVECTION WAS FIRING ALONG THIS BOUNDARY FROM SOUTHWEST OF KEAU TO THE SD LINE. CONVECTION WAS DEVELOPING SOUTHEAST INTO A RATHER UNSTABLE AIRMASS...ESPECIALLY FOR THIS TIME OF NIGHT...WITH LI/S OF -6 TO -10 AND CAPES OF 3000-4500 J/KG OVER AND WEST OF THE FORECAST AREA. APPEARS A RATHER SIZABLE MCS WITH POTENTIAL OF DAMAGING WINDS AND HAIL WILL PUSH INTO THE FORECAST AREA FOR THE REST OF THE NIGHT. 00Z MODELS CONTINUE TO POOL ABUNDANT LOW LEVEL MOISTURE ALONG A SURFACE TROUGH/CONVERGENCE BOUNDARY ACROSS SOUTHERN MN/NORTHERN IA INTO CENTRAL WI...WITH THE AIRMASS REMAINING RATHER UNSTABLE OVERNIGHT AND BECOMING VERY UNSTABLE AGAIN BY THIS AFTERNOON. NUMEROUS OUTFLOW BOUNDARIES FROM TONIGHTS CONVECTION WILL BE IN THE AREA TO FOCUS SURFACE CONVERGENCE AND INITIATE CONVECTION LATER TODAY. 00Z NGM-FWC/AVN-FAN TEMPERATURES FOR TODAY IN THE BALLPARK...ANOTHER SULTRY DAY IN STORE IF COVECTIVE DEBRIS CLOUDS CLEAR OUT FOR A PERIOD OF SUNSHINE. AIRMASS WILL BE STABLIZED FOR THE PART OF THE DAY BY TONIGHTS CONVECTION...BUT REMAINING OUTFLOW BOUNDARIES SHOULD GET THUNDERSTORMS GOING DURING THE MID TO LATE AFTERNOON HOURS. GENERALLY RAISED POPS OVER FWC/FAN NUMBERS. RRS
In the hours before
Local storm report, Jul 16, 10:49 PM CDT, 5 hours 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1049 PM CDT WED JUL 16 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1015 PM 3 W GRAND MARSH WI FLOODING
07/16/97 ADAMS THIGH HIGH WATER ACROSS
COUNTY E
DBSpecial weather statement, Jul 16, 11:00 PM CDT, 5 hours 45 minutes before
WIZ043-044-170500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 1100 PM CDT WED JUL 16 1997 ...THE TORNADO WATCH FOR ADAMS AND JUNEAU COUTNIES HAS EXPIRED AS OF 1100 PM... RADAR INDICATES THAT THE SEVERE STORMS HAVE MOVED OUT THE AREA AND SEVERE WEATHER IS NO LONGER EXPECTED. TMS
Special weather statement, Jul 17, 4:20 AM CDT, 25 minutes before
WIZ041-042-053-171010- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 421 AM CDT THU JUL 17 1997 ...INTENSE THUNDERSTORMS REMAIN OVER THE AREA... AT 415 AM...INTENSE THUNDERSTORMS COVERED MUCH OF LA CROSSE COUNTY AND WESTERN PARTS OF MONROE COUNTY. THESE STORMS HAVE PRODUCED VERY HEAVY RAINFALL...WIND GUSTS TO 40 MPH AND FREQUENT LIGHTNING. THESE STORMS WILL CONTINUE TO SLOWLY MOVE SOUTHEAST AND EFFECT AREAS EAST AND SOUTH OJF THE CITY OF LA CROSSE. OTHER THUNDERSTORMS ARE MOVING INTO THE REGION FROM SOUTHEAST MINNESOTA AND MAY BRING ADDITIONAL SEVERE WEATHER THROUGH 7AM. REMEMBER...A WATCH REMAINS IN EFFECT FOR ALL OF WESTERN WISCONSIN. SHEA
Special weather statement, Jul 17, 4:21 AM CDT, 24 minutes before
WIZ041-042-053-171010- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 421 AM CDT THU JUL 17 1997 ...INTENSE THUNDERSTORMS REMAIN OVER THE AREA... AT 415 AM...INTENSE THUNDERSTORMS COVERED MUCH OF LA CROSSE COUNTY AND WESTERN PARTS OF MONROE COUNTY. THESE STORMS HAVE PRODUCED VERY HEAVY RAINFALL...WIND GUSTS TO 40 MPH AND FREQUENT LIGHTNING. THESE STORMS WILL CONTINUE TO SLOWLY MOVE SOUTHEAST AND EFFECT AREAS EAST AND SOUTH OF THE CITY OF LA CROSSE. OTHER THUNDERSTORMS ARE MOVING INTO THE REGION FROM SOUTHEAST MINNESOTA AND MAY BRING ADDITIONAL SEVERE WEATHER THROUGH 7AM. REMEMBER...A WATCH REMAINS IN EFFECT FOR ALL OF WESTERN WISCONSIN. SHEA
Special weather statement, Jul 17, 4:34 AM CDT, 11 minutes before
IAZ008>011-018-019-029-030-171025- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 434 AM CDT THU JUL 17 1997 ...INTENSE THUNDERSTORMS WILL BE MOVING INTO THE REGION FROM SOUTHEAST MINNESOTA... A LINE OF STRONG TO SEVERE THUNDERSTORMS CONTINUES TO SLOWLY SAG INTO NORTHEAST IOWA FROM THE NORTHWEST AS OF 430 AM. WIND GUSTS IN THE AUSTIN MINNESOTA AREA WERE REPORTED AS HIGH AS 60 MPH WITH VERY HEAVY RAIN AND FREQUENT LIGHTNING. ALTHOUGH IT APPEARS THE STRONGEST WIND GUSTS WILL REMAIN OVER MAINLY SOUTHEAST MINNESOTA WHERE A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT...THUNDERSTORMS CAN BE EXPECTED ACROSS NORTHEAST IOWA AND COULD APPROACH SEVERE LIMITS. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. SHEA
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 1:09 AM CDT | Severe Thunderstorm Warning | ARX | Wabasha | 61 min |
| Jul 17, 2:08 AM CDT | Severe Thunderstorm Warning | ARX | Wabasha | 62 min |
| Jul 17, 3:20 AM CDT | Severe Thunderstorm Warning | ARX | Dodge, Olmsted | 55 min |
| Jul 17, 3:20 AM CDT | Severe Thunderstorm Warning | ARX | Wabasha | 55 min |
| Jul 17, 4:25 AM CDT | Severe Thunderstorm Warning | ARX | Fillmore, Mower, Olmsted, Winona | 60 min |
| Jul 16, 7:06 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 54 min |
| Jul 16, 7:15 PM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 60 min |
| Jul 16, 7:58 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 62 min |
| Jul 16, 8:56 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 64 min |
| Jul 16, 9:12 PM CDT | Flash Flood Warning | ARX | Adams | 3 hr |
| Jul 16, 9:57 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 63 min |
| Jul 17, 2:18 AM CDT | Severe Thunderstorm Warning | ARX | Clark | 57 min |
| Jul 17, 2:54 AM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 61 min |
| Jul 17, 3:20 AM CDT | Severe Thunderstorm Warning | ARX | La Crosse | 45 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1997Severe Thunderstorm Warnings in Wisconsin, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.