Alert archive / Wisconsin / Severe Thunderstorm Watches in 2006
Severe Thunderstorm Watch 736
The Storm Prediction Center issued this severe thunderstorm watch at Aug 23, 2006, 9:49 PM CDT for 6 counties in Illinois; Lake County, Porter County, Indiana; 28 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 23, 2006, 9:49 PM CDT (02:49 UTC)
- Expired
- Aug 24, 2006, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 36 counties
Boone County, IL, Cook County, IL, DuPage County, IL, Kane County, IL, Lake County, IL, McHenry County, IL, Lake County, IN, Porter County, IN, Adams County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge 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, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Monroe County, WI, Ozaukee County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Sheboygan County, WI, Vernon County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 74 km from the middle of the area, began a volume at 02:50 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
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 70%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 10:14 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 76 min |
| Aug 23, 10:38 PM CDT | Tornado Warning | MKX | Sauk | 52 min |
| Aug 23, 10:58 PM CDT | Tornado Warning | MKX | Dane | 62 min |
| Aug 23, 11:03 PM CDT | Severe Thunderstorm Warning | ARX | Juneau | 42 min |
| Aug 23, 11:28 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 47 min |
| Aug 23, 11:59 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 31 min |
| Aug 24, 12:25 AM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson | 50 min |
| Aug 24, 12:28 AM CDT | Severe Thunderstorm Warning | MKX | Green, Rock | 70 min |
| Aug 24, 12:36 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Marquette | 69 min |
| Aug 24, 12:55 AM CDT | Severe Thunderstorm Warning | MKX | Dane | 80 min |
| Aug 24, 1:10 AM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 50 min |
| Aug 24, 1:32 AM CDT | Severe Thunderstorm Warning | MKX | Racine, Waukesha | 58 min |
| Aug 24, 1:40 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dodge | 80 min |
| Aug 24, 1:50 AM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 41 min |
| Aug 24, 2:00 AM CDT | Severe Thunderstorm Warning | MKX | Rock | 90 min |
| Aug 24, 2:08 AM CDT | Severe Thunderstorm Warning | MKX | Green | 19 min |
| Aug 24, 2:15 AM CDT | Severe Thunderstorm Warning | ARX | Jackson | 45 min |
| Aug 24, 2:36 AM CDT | Severe Thunderstorm Warning | MKX | Sauk | 39 min |
| Aug 24, 3:20 AM CDT | Severe Thunderstorm Warning | MKX | Dane | 40 min |
| Aug 24, 3:30 AM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Rock | 45 min |
| Aug 24, 3:32 AM CDT | Severe Thunderstorm Warning | ARX | Juneau | 43 min |
| Aug 24, 3:55 AM CDT | Severe Thunderstorm Warning | MKX | Sauk | 50 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 00:00Z, 2.8 hours before the alert went out and 154 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
- 877 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 9:33 PM CDT | Mesoscale Discussion | SPC | Boone, Cook, Lake, McHenry, Winnebago | 27 min |
| Aug 24, 3:12 AM CDT | Mesoscale Discussion | SPC | Boone, Cook, DuPage, Kane, Lake, McHenry and 1 more | 93 min |
| Aug 24, 4:02 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DuPage, Kane, Lake, McHenry and 1 more | 4 hr |
| Aug 24, 6:26 AM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 8 more | 64 min |
| Aug 24, 1:11 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, DuPage, Kane, Kendall and 3 more | 94 min |
| Aug 23, 9:26 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Cass | 34 min |
| Aug 24, 12:51 AM CDT | Severe Thunderstorm Watch | SPC | Allen, DeKalb, Elkhart, Kosciusko, LaGrange, LaPorte and 5 more | 3 hr |
| Aug 23, 7:17 PM CDT | Mesoscale Discussion | SPC | Adams, Columbia, Dane, Dodge, Fond du Lac, Green and 16 more | 118 min |
| Aug 24, 8:44 AM CDT | Severe Thunderstorm Watch | SPC | Buffalo, Chippewa, Crawford, Dunn, Eau Claire, Grant and 9 more | 7 hr |
| Aug 24, 10:18 AM CDT | Mesoscale Discussion | SPC | Buffalo, Chippewa, Dunn, Eau Claire, La Crosse, Pepin and 4 more | 87 min |
| Aug 24, 11:17 AM CDT | Severe Thunderstorm Watch | SPC | Columbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 14 more | 4 hr |
| Aug 24, 1:05 PM CDT | Mesoscale Discussion | SPC | Buffalo, Dunn, Eau Claire, La Crosse, Pepin, Pierce and 2 more | 115 min |
| Aug 24, 3:17 PM CDT | Tornado Watch | SPC | Buffalo, Chippewa, Dunn, Eau Claire, Pepin, Pierce and 3 more | 9 hr |
| Aug 24, 4:50 PM CDT | Mesoscale Discussion | SPC | Adams, Chippewa, Clark, Columbia, Dane, Dodge and 24 more | 55 min |
| Aug 24, 5:07 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Calumet, Clark, Columbia, Crawford, Dane and 33 more | 7 hr |
| Aug 24, 6:03 PM CDT | Mesoscale Discussion | SPC | Buffalo, Dunn, Eau Claire, Pepin, Pierce, Saint Croix and 1 more | 87 min |
Nearby
Severe Thunderstorm Watches in Wisconsin, 2006Severe Thunderstorm Watches in Illinois, 2006Severe Thunderstorm Watches in Indiana, 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.