Alert archive / Iowa / Tornado Watches in 2005
Tornado Watch 859
The Storm Prediction Center issued this tornado watch at Nov 12, 2005, 5:40 PM CST for 20 counties in Iowa; 17 counties in Minnesota; 18 counties in Wisconsin. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 12, 2005, 5:40 PM CST (23:40 UTC)
- Expired
- Nov 12, 2005, 9:12 PM CST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 55 counties
Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Cedar County, IA, Chickasaw County, IA, Clayton County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Iowa County, IA, Jackson County, IA, Johnson County, IA, Jones County, IA, Linn County, IA, Mitchell County, IA, Winneshiek County, IA, Anoka County, MN, Chisago County, MN, Dakota County, MN, Dodge County, MN, Fillmore County, MN, Goodhue County, MN, Hennepin County, MN, Houston County, MN, Isanti County, MN, Mower County, MN, Olmsted County, MN, Ramsey County, MN, Scott County, MN, Sherburne County, MN, Wabasha County, MN, Washington County, MN, Winona County, MN, Barron County, WI, Buffalo County, WI, Chippewa County, WI, Crawford County, WI, Dunn County, WI, Eau Claire County, WI, Grant County, WI, Jackson County, WI, La Crosse County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Richland County, WI, Rusk County, WI, Saint Croix County, WI, Trempealeau County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 73 km from the middle of the area, began a volume at 23:41 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.
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.7 hours before the alert went out and 155 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
- 1591 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 66 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 |
|---|---|---|---|---|
| Nov 12, 12:33 PM CST | Mesoscale Discussion | SPC | Adams, Audubon, Buena Vista, Carroll, Cass, Cherokee and 18 more | 87 min |
| Nov 12, 1:44 PM CST | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Buena Vista and 62 more | 6 hr |
| Nov 12, 3:35 PM CST | Mesoscale Discussion | SPC | Adair, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 18 more | 85 min |
| Nov 12, 4:40 PM CST | Mesoscale Discussion | SPC | Adair, Appanoose, Audubon, Boone, Buena Vista, Butler and 49 more | 65 min |
| Nov 12, 5:24 PM CST | Mesoscale Discussion | SPC | Allamakee, Benton, Bremer, Buchanan, Cedar, Chickasaw and 18 more | 66 min |
Nearby
Tornado Watches in Iowa, 2005Tornado Watches in Wisconsin, 2005Tornado Watches in Minnesota, 2005Every tornado 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.