Alert archive / Wisconsin / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 554
The Storm Prediction Center issued this severe thunderstorm watch at Jul 26, 2007, 3:43 PM CDT for 7 counties in Minnesota; 41 counties in Wisconsin. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 26, 2007, 3:43 PM CDT (20:43 UTC)
- Expired
- Jul 26, 2007, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 48 counties
Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Brown County, WI, Buffalo County, WI, Calumet County, WI, Clark County, WI, Columbia County, WI, Dodge County, WI, Door County, WI, Florence County, WI, Fond du Lac County, WI, Forest County, WI, Green Lake County, WI, Jackson County, WI, Juneau County, WI, Kewaunee County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Marquette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Ozaukee County, WI, Portage County, WI, Sauk County, WI, Shawano County, WI, Sheboygan County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Vilas County, WI, Washington County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI
The radar
The La Crosse radar (KARX), 102 km from the middle of the area, began a volume at 20:45 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
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 4:16 PM CDT | Severe Thunderstorm Warning | GRB | Waupaca | 26 min |
| Jul 26, 4:20 PM CDT | Flash Flood Warning | GRB | Waupaca | 115 min |
| Jul 26, 4:38 PM CDT | Flash Flood Warning | GRB | Lincoln, Oneida | 2 hr |
| Jul 26, 5:06 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Waupaca | 39 min |
| Jul 26, 6:05 PM CDT | Severe Thunderstorm Warning | ARX | Clark | 70 min |
| Jul 26, 6:25 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Waushara | 65 min |
| Jul 26, 6:54 PM CDT | Severe Thunderstorm Warning | ARX | Dodge | 51 min |
| Jul 26, 7:00 PM CDT | Severe Thunderstorm Warning | ARX | Taylor | 32 min |
| Jul 26, 7:04 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Wood | 56 min |
| Jul 26, 7:14 PM CDT | Severe Thunderstorm Warning | ARX | Olmsted | 61 min |
| Jul 26, 7:18 PM CDT | Severe Thunderstorm Warning | ARX | Mower | 27 min |
| Jul 26, 7:41 PM CDT | Severe Thunderstorm Warning | ARX | Fillmore | 64 min |
| Jul 26, 8:24 PM CDT | Flash Flood Warning | MKX | Ozaukee | 3 hr |
| Jul 26, 8:48 PM CDT | Flash Flood Warning | GRB | Waushara | 87 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, 8.7 hours before the alert went out and 197 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
- 1156 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 727 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 2:58 PM CDT | Mesoscale Discussion | SPC | Lyon, Osceola, Sioux | 92 min |
| Jul 26, 4:05 PM CDT | Mesoscale Discussion | SPC | Winnebago | 55 min |
| Jul 26, 4:54 PM CDT | Mesoscale Discussion | SPC | Black Hawk, Bremer, Butler, Cerro Gordo, Chickasaw, Emmet and 18 more | 96 min |
| Jul 26, 12:33 PM CDT | Mesoscale Discussion | SPC | Gogebic | 87 min |
| Jul 25, 8:59 PM CDT | Mesoscale Discussion | SPC | Beltrami, Clearwater, Kittson, Lake of the Woods, Mahnomen, Marshall and 5 more | 2 hr |
| Jul 25, 11:24 PM CDT | Mesoscale Discussion | SPC | Beltrami, Clearwater, Kittson, Lake of the Woods, Mahnomen, Marshall and 5 more | 96 min |
| Jul 26, 12:55 PM CDT | Mesoscale Discussion | SPC | Aitkin, Anoka, Benton, Blue Earth, Brown, Carlton and 30 more | 65 min |
| Jul 26, 1:16 PM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Anoka, Benton, Blue Earth, Brown, Carlton and 36 more | 8 hr |
| Jul 26, 6:11 PM CDT | Mesoscale Discussion | SPC | Chippewa, Clark, Eau Claire, Jackson, Marathon, Portage and 3 more | 94 min |
Nearby
Severe Thunderstorm Watches in Wisconsin, 2007Severe Thunderstorm Watches in Minnesota, 2007Every severe thunderstorm watch in 2007
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.