Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 101, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 1, 1997, 10:14 PM CDT for Pepin County, Pierce County, Wisconsin. It was in force for 46 min. 2 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 1, 1997, 10:14 PM CDT (03:14 UTC)
- Expired
- Jul 1, 1997, 11:00 PM CDT
- In force
- 46 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Pepin County, WI, Pierce County, WI
The radar
The Minneapolis radar (KMPX), 105 km from the middle of the area, began a volume at 03:15 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 1, 10:53 PM CDT | Thunderstorm Wind 55 | Ella, WI | Power lines down. Estimated windspeed. |
| Jul 1, 11:00 PM CDT | Thunderstorm Wind 55 | Arkansaw, WI | Power lines down. Estimated windspeed. |
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 1, 7:45 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 3.2 hours before the alert went out and 107 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
- 1759 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1186 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 303 m²/s²
- 0-3 km storm-relative helicity
- 455 m²/s²
- Significant tornado parameter
- 4.3
- Supercell composite
- 21.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 020314 RRA
SVRMSP
WIC091-093-020400-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1014 PM CDT TUE JUL 1 1997
* SEVERE THUNDERSTORM WARNING FOR
PEPIN COUNTY - WEST CENTRAL WISCONSIN
SOUTHERN PIERCE COUNTY - WEST CENTRAL WISCONSIN
* UNTIL 1100 PM CDT
* SOME LOCATIONS AFFECTED
DURAND
BAY CITY
PEPIN
PLUMB CITY
* AT 1013 PM CDT DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
HAIL AND DAMAGING WINDS NEAR RED WING. THE STORM WAS MOVING EAST
AT 20 MPH.
DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.
A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTOR\MS CAN PRODUCE
TORNADOES.
HOWIESONThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 8:25 PM CDT | Severe Thunderstorm Warning | MPX | Polk, Saint Croix | 65 min |
| Jul 1, 8:48 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 57 min |
| Jul 1, 9:10 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Dunn | 50 min |
| Jul 1, 10:38 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 52 min |
| Jul 1, 10:55 PM CDT | Severe Thunderstorm Warning | MPX | Pepin, Pierce | 35 min |
| Jul 1, 11:33 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 27 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.