Alert archive / Wisconsin / Tornado Watches in 2006
Tornado Watch 734
The Storm Prediction Center issued this tornado watch at Aug 23, 2006, 2:32 PM CDT for Allamakee County, Clayton County, Winneshiek County, Iowa; 6 counties in Minnesota; 34 counties in Wisconsin. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 23, 2006, 2:32 PM CDT (19:32 UTC)
- Expired
- Aug 23, 2006, 9:58 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 43 counties
Allamakee County, IA, Clayton County, IA, Winneshiek County, IA, Fillmore County, MN, Goodhue County, MN, Houston County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Dunn County, WI, Eau Claire County, WI, Fond du Lac County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jackson County, WI, Jefferson County, WI, Juneau County, WI, Kenosha County, WI, La Crosse County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Monroe County, WI, Ozaukee County, WI, Pepin County, WI, Pierce County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Trempealeau County, WI, Vernon County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI
The radar
The La Crosse radar (KARX), 47 km from the middle of the area, began a volume at 19:32 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 50%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
21 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 2:39 PM CDT | Severe Thunderstorm Warning | MKX | Racine | 21 min |
| Aug 23, 3:47 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee | 28 min |
| Aug 23, 4:18 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 27 min |
| Aug 23, 5:31 PM CDT | Tornado Warning | ARX | Jackson | 44 min |
| Aug 23, 6:16 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson | 47 min |
| Aug 23, 6:41 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 64 min |
| Aug 23, 7:05 PM CDT | Severe Thunderstorm Warning | ARX | Juneau | 25 min |
| Aug 23, 7:16 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 74 min |
| Aug 23, 7:23 PM CDT | Severe Thunderstorm Warning | ARX | Vernon | 47 min |
| Aug 23, 7:28 PM CDT | Severe Thunderstorm Warning | ARX | Juneau | 46 min |
| Aug 23, 7:32 PM CDT | Severe Thunderstorm Warning | ARX | Jackson | 28 min |
| Aug 23, 7:45 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 30 min |
| Aug 23, 8:16 PM CDT | Tornado Warning | MKX | Sauk | 59 min |
| Aug 23, 8:33 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Juneau, Monroe | 30 min |
| Aug 23, 8:44 PM CDT | Severe Thunderstorm Warning | ARX | Juneau, Monroe, Vernon | 29 min |
| Aug 23, 8:47 PM CDT | Tornado Warning | MKX | Dane, Iowa | 58 min |
| Aug 23, 9:11 PM CDT | Severe Thunderstorm Warning | MKX | Marquette | 64 min |
| Aug 23, 9:13 PM CDT | Tornado Warning | MKX | Sauk | 62 min |
| Aug 23, 9:18 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 27 min |
| Aug 23, 9:43 PM CDT | Severe Thunderstorm Warning | ARX | Juneau, Monroe | 42 min |
| Aug 23, 9:43 PM CDT | Tornado Warning | MKX | Dane, Iowa | 77 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, 7.5 hours before the alert went out and 211 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1381 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 75 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 |
|---|---|---|---|---|
| Aug 23, 1:17 PM CDT | Mesoscale Discussion | SPC | Allamakee, Winneshiek | 88 min |
| Aug 22, 7:00 PM CDT | Mesoscale Discussion | SPC | Becker, Benton, Clay, Douglas, Grant, Kandiyohi and 12 more | 2 hr |
| Aug 22, 7:49 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Clay, Clearwater, Grant, Hubbard, Mahnomen and 4 more | 7 hr |
| Aug 22, 10:02 PM CDT | Mesoscale Discussion | SPC | Becker, Benton, Clay, Douglas, Grant, Kandiyohi and 12 more | 88 min |
| Aug 22, 10:16 PM CDT | Severe Thunderstorm Watch | SPC | Anoka, Benton, Big Stone, Carver, Chippewa, Chisago and 25 more | 7 hr |
| Aug 23, 3:19 AM CDT | Severe Thunderstorm Watch | SPC | Blue Earth, Brown, Dodge, Faribault, Fillmore, Freeborn and 12 more | 7 hr |
| Aug 23, 7:50 AM CDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Dodge, Faribault, Fillmore, Freeborn and 11 more | 115 min |
Nearby
Tornado Watches in Wisconsin, 2006Tornado Watches in Minnesota, 2006Tornado Watches in Iowa, 2006Every tornado 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.