Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 33, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 15, 1997, 9:40 PM CDT for Rock County, Walworth County, Wisconsin. It was in force for 60 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 15, 1997, 9:40 PM CDT (02:40 UTC)
- Expired
- Jun 15, 1997, 10:40 PM CDT
- In force
- 60 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
Counties Rock County, WI, Walworth County, WI
The radar
The Milwaukee radar (KMKX), 39 km from the middle of the area, began a volume at 02:43 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 15, 9:52 PM CDT | Thunderstorm Wind | Footville, WI | |
| Jun 15, 10:10 PM CDT | Thunderstorm Wind | Janesville, WI | |
| Jun 15, 10:13 PM CDT | Thunderstorm Wind | Walworth, WI |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 15, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 2.7 hours before the alert went out and 182 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
- 654 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1426 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMKE 160240 RRA SVRMKE WIC105-127-160345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 940 PM CDT SUN JUN 15 1997 * SEVERE THUNDERSTORM WARNING FOR EASTERN ROCK COUNTY - SOUTH CENTRAL WISCONSIN WALWORTH COUNTY - SOUTHEASTERN WISCONSIN * UNTIL 1040 PM CDT * SOME LOCATIONS AFFECTED JOHNSTOWN DELAVAN LAKE GENEVA * AT 940 NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES EAST SOUTHEAST OF JANESVILLE. THE STORM WAS MOVING EAST AT 35 MPH. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. DAVIS
What 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.
In the hours before
Special weather statement, Jun 15, 8:21 PM CDT, 1 hour 19 minutes before
WIZ046-047-056-057-160225- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 821 PM CDT SUN JUN 15 1997 ...SEVERE THUNDERSTORM WATCH CANCELED... AT 820 PM...WEATHER RADAR INDICATED WIDESPREAD SHOWERS AND THUNDERSTORMS COVERING MUCH OF THE SOUTH HALF OF WISCONSIN. ALTHOUGH ISOLATED STRONG STORMS ARE STILL POSSIBLE...THE AIRMASS HAS STABLIZED...AND SEVERE THUNDERSTORMS ARE NO LONGER EXPECTED NORTH OF A MADISON TO LONE ROCK LINE. AS A RESULT...THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELED FOR SAUK...COLUMBIA...MARQUETTE...AND GREEN LAKE COUNTIES. VERY HEAVY RAINS AND GUSTY WINDS WILL STILL BE LIKELY FOR THE NEXT SEVERAL HOURS.
Special weather statement, Jun 15, 8:22 PM CDT, 1 hour 18 minutes before
WIZ046-047-056-057-160225- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 821 PM CDT SUN JUN 15 1997 ...SEVERE THUNDERSTORM WATCH CANCELED... AT 820 PM...WEATHER RADAR INDICATED WIDESPREAD SHOWERS AND THUNDERSTORMS COVERING MUCH OF THE SOUTH HALF OF WISCONSIN. ALTHOUGH ISOLATED STRONG STORMS ARE STILL POSSIBLE...THE AIRMASS HAS STABLIZED...AND SEVERE THUNDERSTORMS ARE NO LONGER EXPECTED NORTH OF A MADISON TO LONE ROCK LINE. AS A RESULT...THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELED FOR SAUK...COLUMBIA...MARQUETTE...AND GREEN LAKE COUNTIES. VERY HEAVY RAINS AND GUSTY WINDS WILL STILL BE LIKELY FOR THE NEXT SEVERAL HOURS.
Special weather statement, Jun 15, 8:58 PM CDT, 42 minutes before
WIZ051-052-058>060-064>066-070>072-526>529-160305- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 858 PM CDT SUN JUN 15 1997 ...SEVERE THUNDERSTORM WATCH 442 CANCELED... AT 858 PM...WEATHER RADAR INDICATED NUMEROUS SHOWERS AND THUNDERSTORMS OVER MUCH OF SOUTHERN WISCONSIN. HOWEVER...THE AIRMASS HAS STABLIZED...AND SEVERE THUNDERSTORMS ARE NO LONGER EXPECTED. AS A RESULT...THE SEVERE THUNDERSTORM WATCH FOR EAST AND SOUTHEAST WISCONSIN HAS BEEN CANCELED. THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS SOUTHERN WISCONSIN THROUGHOUT MUCH OF THE NIGHT...AND SOME STORMS MAY STILL PRODUCE STRONG WINDS. PERIODS OF HEAVY RAINS MAY PRODUCE URBAN AND SMALL STREAM FLOODING.
Special weather statement, Jun 15, 8:59 PM CDT, 41 minutes before
WIZ051-052-058>060-064>066-070>072-526>529-160305- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 858 PM CDT SUN JUN 15 1997 ...SEVERE THUNDERSTORM WATCH 442 CANCELED... AT 858 PM...WEATHER RADAR INDICATED NUMEROUS SHOWERS AND THUNDERSTORMS OVER MUCH OF SOUTHERN WISCONSIN. HOWEVER...THE AIRMASS HAS STABLIZED...AND SEVERE THUNDERSTORMS ARE NO LONGER EXPECTED. AS A RESULT...THE SEVERE THUNDERSTORM WATCH FOR EAST AND SOUTHEAST WISCONSIN HAS BEEN CANCELED. THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS SOUTHERN WISCONSIN THROUGHOUT MUCH OF THE NIGHT...AND SOME STORMS MAY STILL PRODUCE STRONG WINDS. PERIODS OF HEAVY RAINS MAY PRODUCE URBAN AND SMALL STREAM FLOODING. @
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 7:07 PM CDT | Severe Thunderstorm Warning | MKX | Green, Rock | 53 min |
| Jun 15, 8:50 PM CDT | Flash Flood Warning | MKX | Green, Iowa, Lafayette | 4 hr |
Nearby
Severe 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.