Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 34, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 20, 1997, 8:34 AM CDT for Rock County, Wisconsin. It was in force for 61 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 20, 1997, 8:34 AM CDT (13:34 UTC)
- Expired
- Jun 20, 1997, 9:35 AM CDT
- In force
- 61 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
County Rock County, WI
The radar
The Milwaukee radar (KMKX), 54 km from the middle of the area, began a volume at 13:36 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 20, 8:35 AM CDT | Hail 1 | Evansville, 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 nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 1.6 hours before the alert went out and 166 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
- 2894 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 766 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 218 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 12.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMKE 201335 RRA SVRMKE WIC105-201435- BULLETIN - IMMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 834 AM CDT FRI JUN 20 1997 * SEVERE THUNDERSTORM WARNING FOR ROCK COUNTY - SOUTH CENTRAL WISCONSIN * UNTIL 935 AM CDT * SOME LOCATIONS AFFECTED LEYDEN BY 848 AM CDT FULTON BY 853 AM CDT JANESVILLE BY 857 AM CDT INDIANFORD BY 857 AM CDT EDGERTON BY 901 AM CDT * AT 831 AM CDT...DOPPLER RADAR AT SULLIVAN INDICATED A SEVERE THUNDERSTORM 13 MILES WEST OF JANESVILLE OR 7 MILES WEST SOUTHWEST OF LEYDEN MOVING EAST NORTHEAST AT 25 MPH. THIS IS A DANGEROUS STORM. IF YOU VARE 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. PC/KRR
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 20, 5:32 AM CDT, 3 hours 2 minutes before
WIZ046-047-051-052-056>060-062>072-201630- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 532 AM CDT FRI JUN 20 1997 ...LOW RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT... ...FOR SOUTHCENTRAL AND SOUTHEAST WISCONSIN... THREAT... DAMAGING WINDS AND POSSIBLY LARGE HAIL. DISCUSSION... THUNDERSTORMS OVER SOUTHCENTRAL AND SOUTHEAST WISCONSIN ARE FORECAST TO DEVELOP AFTER 3 PM. THE THUNDERSTORMS ARE THEN EXPECTED TO BECOME MORE NUMEROUS AND CONTINUE TONIGHT. SOME OF THESE STORMS MAY BECOME SEVERE. VERY HEAVY RAIN OF SEVERAL INCHES IN A FEW HOURS IS ALSO POSSIBLE...WHICH MAY CAUSE LOCALIZED FLOODING. SPOTTER ACTIVATION... STORM SPOTTER GROUPS MAY NEED TO BE ACTIVATED AFTER 3PM THIS AFTERNOON AND CONTINUE TONIGHT. JH
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 6:20 PM CDT | Severe Thunderstorm Warning | MKX | Green | 60 min |
| Jun 20, 6:26 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee | 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.