Alert archive / Wisconsin / Severe Thunderstorm Watches in 2006
Severe Thunderstorm Watch 643
The Storm Prediction Center issued this severe thunderstorm watch at Jul 25, 2006, 7:10 PM EDT for 8 counties in Michigan; 12 counties in Minnesota; 13 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 25, 2006, 7:10 PM EDT (23:10 UTC)
- Expired
- Jul 26, 2006, 1:00 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 33 counties
Baraga County, MI, Dickinson County, MI, Gogebic County, MI, Houghton County, MI, Iron County, MI, Marquette County, MI, Menominee County, MI, Ontonagon County, MI, Aitkin County, MN, Benton County, MN, Carlton County, MN, Cass County, MN, Chisago County, MN, Crow Wing County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Sherburne County, MN, Ashland County, WI, Barron County, WI, Bayfield County, WI, Burnett County, WI, Chippewa County, WI, Douglas County, WI, Iron County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Sawyer County, WI, Taylor County, WI, Washburn County, WI
The radar
The Duluth radar (KDLH), 182 km from the middle of the area, began a volume at 23:12 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 7:20 PM EDT | Severe Thunderstorm Warning | MQT | Marquette | 40 min |
| Jul 25, 7:28 PM EDT | Severe Thunderstorm Warning | DLH | Sawyer | 32 min |
| Jul 25, 7:54 PM EDT | Severe Thunderstorm Warning | DLH | Ashland | 41 min |
| Jul 25, 8:24 PM EDT | Severe Thunderstorm Warning | DLH | Cass, Crow Wing | 36 min |
| Jul 25, 8:28 PM EDT | Severe Thunderstorm Warning | MPX | Isanti | 62 min |
| Jul 25, 8:49 PM EDT | Severe Thunderstorm Warning | DLH | Aitkin | 56 min |
| Jul 25, 8:55 PM EDT | Severe Thunderstorm Warning | MQT | Menominee | 65 min |
| Jul 25, 9:02 PM EDT | Severe Thunderstorm Warning | DLH | Crow Wing | 13 min |
| Jul 25, 9:12 PM EDT | Severe Thunderstorm Warning | MPX | Kanabec, Mille Lacs | 63 min |
| Jul 25, 9:21 PM EDT | Flash Flood Warning | MPX | Barron, Polk | 3 hr |
| Jul 25, 9:31 PM EDT | Severe Thunderstorm Warning | DLH | Bayfield, Douglas | 44 min |
| Jul 25, 9:43 PM EDT | Severe Thunderstorm Warning | MQT | Menominee | 62 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.2 hours before the alert went out and 236 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
- 606 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 940 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 10:21 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Arenac, Iosco, Montmorency, Ogemaw and 2 more | 84 min |
| Jul 25, 3:00 PM EDT | Mesoscale Discussion | SPC | Becker, Big Stone, Chippewa, Clay, Douglas, Grant and 11 more | 90 min |
| Jul 25, 4:56 PM EDT | Severe Thunderstorm Watch | SPC | Becker, Big Stone, Chippewa, Clay, Douglas, Grant and 19 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Wisconsin, 2006Severe Thunderstorm Watches in Minnesota, 2006Severe Thunderstorm Watches in Michigan, 2006Every severe thunderstorm watch in 2006
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.