Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 78, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 26, 1997, 5:35 PM CDT for Walworth County, Wisconsin. It was in force for 55 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
- Jul 26, 1997, 5:35 PM CDT (22:35 UTC)
- Expired
- Jul 26, 1997, 6:30 PM CDT
- In force
- 55 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
County Walworth County, WI
The radar
The Milwaukee radar (KMKX), 33 km from the middle of the area, began a volume at 22:39 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 |
|---|---|---|---|
| Jul 26, 5:45 PM CDT | Thunderstorm Wind | Darien, WI | |
| Jul 26, 6:05 PM CDT | Thunderstorm Wind | East Troy, WI | |
| Jul 26, 6:15 PM CDT | Thunderstorm Wind | Lake Geneva, 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 |
|---|---|---|---|
| Jul 26, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 10.6 hours before the alert went out and 199 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
- 2842 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 1370 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 63 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 KMKE 262236 RRA SVRMKE WIC127-262330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 535 PM CDT SAT JUL 26 1997 * SEVERE THUNDERSTORM WARNING FOR WALWORTH COUNTY - SOUTHEASTERN WISCONSIN * UNTIL 630 PM CDT * SOME LOCATIONS AFFECTED EAST TROY WHITEWATER SPRING PRAIRIE LAKE BEULAH * AT 530 MPH LOCAL LAW ENFORCEMENT REPORTED TREES DOWN IN WHITEWATER OR 19 MILES NORTHEAST OF JANESVILLE. THE STORM WAS MOVING EAST SOUTHEAST AT 30 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 UNT~IL THE STORM HAS PASSED. TZ/JH &
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 7:21 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Dodge, Jefferson | 54 min |
| Jul 25, 7:31 PM CDT | Tornado Warning | MKX | Dane, Jefferson | 29 min |
| Jul 25, 8:01 PM CDT | Tornado Warning | MKX | Dane, Jefferson | 34 min |
| Jul 25, 8:21 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Sheboygan, Washington | 59 min |
| Jul 25, 8:28 PM CDT | Tornado Warning | MKX | Dane, Jefferson | 32 min |
| Jul 25, 8:57 PM CDT | Tornado Warning | MKX | Dane, Dodge, Jefferson | 63 min |
| Jul 25, 9:17 PM CDT | Flash Flood Warning | MKX | Dane, Jefferson | 3 hr |
| Jul 25, 11:11 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Washington | 49 min |
| Jul 26, 3:50 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 40 min |
| Jul 26, 4:10 PM CDT | Severe Thunderstorm Warning | MKX | Columbia | 65 min |
| Jul 26, 4:33 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Jefferson | 57 min |
| Jul 26, 5:03 PM CDT | Severe Thunderstorm Warning | MKX | Dodge | 57 min |
| Jul 26, 5:27 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Waukesha | 63 min |
| Jul 26, 5:41 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 64 min |
| Jul 26, 5:41 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Ozaukee, Washington | 64 min |
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.