Alert archive / Wisconsin / Severe Thunderstorm Watches in 2005
Severe Thunderstorm Watch 239
The Storm Prediction Center issued this severe thunderstorm watch at May 9, 2005, 12:45 PM CDT for 17 counties in Illinois; Lake County, Indiana; 33 counties in Wisconsin. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2005, 12:45 PM CDT (17:45 UTC)
- Expired
- May 9, 2005, 8:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 51 counties
Boone County, IL, Bureau County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Putnam County, IL, Stephenson County, IL, Will County, IL, Winnebago County, IL, Lake County, IN, Adams County, WI, Calumet County, WI, Clark County, WI, Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Juneau County, WI, Kenosha County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marquette County, WI, Menominee County, WI, Milwaukee County, WI, Outagamie County, WI, Portage County, WI, Racine County, WI, Rock County, WI, Sauk County, WI, Shawano County, WI, Taylor County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI
The radar
The Milwaukee radar (KMKX), 84 km from the middle of the area, began a volume at 17:47 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.
Warnings issued inside it
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 2:03 PM CDT | Severe Thunderstorm Warning | MKX | Dodge | 38 min |
| May 9, 2:16 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Waupaca | 44 min |
| May 9, 3:31 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Winnebago | 35 min |
| May 9, 3:31 PM CDT | Severe Thunderstorm Warning | GRB | Shawano | 29 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, 5.8 hours before the alert went out and 109 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
- 1034 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -56 m²/s²
- 0-3 km storm-relative helicity
- 19 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 |
|---|---|---|---|---|
| May 9, 12:00 PM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 15 more | 90 min |
| May 9, 3:31 PM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 9 more | 89 min |
| May 9, 5:32 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Grundy and 11 more | 28 min |
| May 8, 7:14 PM CDT | Mesoscale Discussion | SPC | Barron, Buffalo, Burnett, Dunn, Pepin, Pierce and 3 more | 2 hr |
| May 9, 12:58 PM CDT | Mesoscale Discussion | SPC | Barron, Buffalo, Burnett, Chippewa, Clark, Dunn and 11 more | 92 min |
Nearby
Severe Thunderstorm Watches in Wisconsin, 2005Severe Thunderstorm Watches in Illinois, 2005Severe Thunderstorm Watches in Indiana, 2005Every severe thunderstorm watch in 2005
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.