Alert archive / Wisconsin / Severe Thunderstorm Watches in 2008
Severe Thunderstorm Watch 686
The Storm Prediction Center issued this severe thunderstorm watch at Jul 11, 2008, 10:15 PM EDT for 5 counties in Michigan; 7 counties in Minnesota; 15 counties in Wisconsin. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 11, 2008, 10:15 PM EDT (02:15 UTC)
- Expired
- Jul 12, 2008, 2:21 AM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 27 counties
Baraga County, MI, Gogebic County, MI, Houghton County, MI, Iron County, MI, Ontonagon County, MI, Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Buffalo County, WI, Clark County, WI, Forest County, WI, Jackson County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Monroe County, WI, Oneida County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Vilas County, WI, Wood County, WI
The radar
The Duluth radar (KDLH), 200 km from the middle of the area, began a volume at 02:16 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
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 10:25 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 65 min |
| Jul 11, 10:58 PM EDT | Severe Thunderstorm Warning | ARX | Dodge, Mower, Olmsted, Wabasha | 77 min |
| Jul 11, 11:28 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Ontonagon | 62 min |
| Jul 11, 11:34 PM EDT | Severe Thunderstorm Warning | ARX | Olmsted, Winona | 71 min |
| Jul 11, 11:53 PM EDT | Severe Thunderstorm Warning | GRB | Lincoln, Oneida, Vilas | 67 min |
| Jul 11, 11:58 PM EDT | Severe Thunderstorm Warning | ARX | Fillmore, Mower | 62 min |
| Jul 12, 12:29 AM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Houghton, Iron, Ontonagon | 61 min |
| Jul 12, 12:57 AM EDT | Severe Thunderstorm Warning | GRB | Forest, Langlade, Lincoln, Oneida, Vilas | 34 min |
| Jul 12, 1:30 AM EDT | Severe Thunderstorm Warning | MQT | Iron | 30 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, 2.3 hours before the alert went out and 216 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
- 4 J/kg
- Mixed-layer CIN
- -395 J/kg
- Mixed-layer LCL
- 1352 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 12:51 AM EDT | Mesoscale Discussion | SPC | Baraga, Gogebic, Houghton, Iron, Ontonagon | 84 min |
| Jul 11, 9:29 PM EDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Cottonwood, Faribault, Jackson, Le Sueur and 9 more | 91 min |
| Jul 12, 2:52 AM EDT | Mesoscale Discussion | SPC | Crawford, Dane, Grant, Green, Iowa, Lafayette and 5 more | 53 min |
Nearby
Severe Thunderstorm Watches in Wisconsin, 2008Severe Thunderstorm Watches in Minnesota, 2008Severe Thunderstorm Watches in Michigan, 2008Every severe thunderstorm watch in 2008
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.