Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 43, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 21, 1997, 7:32 AM CDT for Rock County, Walworth County, Wisconsin. It was in force for 63 min. 1 report 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 21, 1997, 7:32 AM CDT (12:32 UTC)
- Expired
- Jun 21, 1997, 8:35 AM CDT
- In force
- 63 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 12:33 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 21, 8:00 AM CDT | Thunderstorm Wind | East Troy, 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 21, 7:00 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 0.5 hours before the alert went out and 209 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
- 745 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 630 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
461 WUUS1 KMKE 211233 RRA SVRMKE WIC105-127-211335- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 732 AM CDT SAT JUN 21 1997 * SEVERE THUNDERSTORM WARNING FOR SOUTHERN ROCK COUNTY - SOUTH CENTRAL WISCONSIN SOUTHERN WALWORTH COUNTY - SOUTHEASTERN WISCONSIN * UNTIL 835 AM CDT * SOME LOCATIONS AFFECTED BELOIT AND WALWORTH * AT 7:30 AM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF BELOIT. THE STORM WAS MOVING EAST AT 40 MPH. WIND GUSTS TO 60 MPH ARE EXPECTED FOR AN EXTENDED PERIOD OF TIME EVEN AFTER THE HEAVIEST RAIN PASSES. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. BROWNING
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
Local storm report, Jun 21, 3:36 AM CDT, 3 hours 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
336 AM CDT SAT JUN 21 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0315 AM BENTON WI WIND DAMAGE
06/21/97 LAFAYETTE TREE DOWN ACROSS HWY 11
GDLocal storm report, Jun 21, 3:37 AM CDT, 3 hours 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
336 AM CDT SAT JUN 21 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
8
0315 AM BENTON WI WIND DAMAGE
06/21/97 LAFAYETTE TREE DOWN ACROSS HWY 11
GDSpecial weather statement, Jun 21, 6:10 AM CDT, 1 hour 22 minutes before
WIZ046-047-051-052-054>072-212300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 610 AM CDT SAT JUN 21 1997 ...SEVERE THUNDERSTORM WATCH UNTIL 7AM THIS MORNING... ...LOW RISK OF SEVERE THUNDERSTORMS FOR LATER TODAY INTO THIS EVENING FOR SOUTH CENTRAL AND SOUTHEAST WISCONSIN... THREAT... DAMAGING WINDS. DISCUSSION... THUNDERSTORMS OVER SOUTH CENTRAL AND SOUTHEAST WISCONSIN MAY CONTINUE TO PRODUCE DAMAGING WINDS EARLY THIS MORNING THEN NEW STORMS MAY DEVELOP LATER TODAY AND THIS EVENING. HEAVY RAINFALL MAY ALSO PRODUCE LOCALIZED FLOODING. SPOTTER ACTIVATION... STORM SPOTTER GROUPS SHOULD ACTIVATE FOR EARLY THIS MORNING AND EXPECT ACTIVATION AGAIN LATER TODAY. GARCIA
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 2:32 AM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Sheboygan | 48 min |
| Jun 21, 3:01 AM CDT | Flash Flood Warning | MKX | Milwaukee | 119 min |
| Jun 21, 3:10 AM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 65 min |
| Jun 21, 3:55 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Green | 55 min |
| Jun 21, 4:16 AM CDT | Flash Flood Warning | MKX | Dodge, Washington | 119 min |
| Jun 21, 4:16 AM CDT | Flash Flood Warning | MKX | Ozaukee | 119 min |
| Jun 21, 4:53 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Jefferson | 62 min |
| Jun 21, 5:53 AM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 62 min |
| Jun 21, 6:55 AM CDT | Severe Thunderstorm Warning | MKX | Green | 60 min |
| Jun 21, 7:40 AM CDT | Flash Flood Warning | MKX | Milwaukee, Waukesha | 2 hr |
| Jun 21, 4:54 PM CDT | Flash Flood Warning | MKX | Waukesha | 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.