Alert archive / Wisconsin / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 451
The Storm Prediction Center issued this severe thunderstorm watch at Jun 26, 2007, 2:01 PM CDT for 10 counties in Minnesota; 17 counties in Wisconsin. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 26, 2007, 2:01 PM CDT (19:01 UTC)
- Expired
- Jun 26, 2007, 9:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 27 counties
Carlton County, MN, Chisago County, MN, Cook County, MN, Dakota County, MN, Goodhue County, MN, Lake County, MN, Pine County, MN, Ramsey County, MN, Saint Louis County, MN, Washington County, MN, Ashland County, WI, Barron County, WI, Bayfield County, WI, Burnett County, WI, Chippewa County, WI, Douglas County, WI, Dunn County, WI, Eau Claire County, WI, Iron County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Washburn County, WI
The radar
The Duluth radar (KDLH), 61 km from the middle of the area, began a volume at 19:02 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
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 2:26 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 36 min |
| Jun 26, 2:58 PM CDT | Severe Thunderstorm Warning | DLH | Lake | 32 min |
| Jun 26, 4:31 PM CDT | Severe Thunderstorm Warning | DLH | Washburn | 44 min |
| Jun 26, 4:37 PM CDT | Severe Thunderstorm Warning | DLH | Bayfield | 38 min |
| Jun 26, 5:17 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield | 43 min |
| Jun 26, 6:30 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 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
Minneapolis, MN (KMPX), launched 12:00Z, 7.0 hours before the alert went out and 276 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
- 1788 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 974 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 91 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 |
|---|---|---|---|---|
| Jun 26, 1:27 PM CDT | Mesoscale Discussion | SPC | Aitkin, Benton, Brown, Carlton, Carver, Crow Wing and 14 more | 93 min |
| Jun 26, 5:04 PM CDT | Mesoscale Discussion | SPC | Cook, Lake | 86 min |
| Jun 26, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | Florence, Forest, Langlade, Lincoln, Marinette, Oconto and 2 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Wisconsin, 2007Severe Thunderstorm Watches in Minnesota, 2007Every severe thunderstorm watch in 2007
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.