Alert archive / Minnesota / Tornado Watches in 2006
Tornado Watch 667
The Storm Prediction Center issued this tornado watch at Aug 1, 2006, 8:00 PM CDT for 8 counties in Iowa; 14 counties in Minnesota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 1, 2006, 8:00 PM CDT (01:00 UTC)
- Expired
- Aug 2, 2006, 1:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 22 counties
Emmet County, IA, Hancock County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Winnebago County, IA, Worth County, IA, Blue Earth County, MN, Brown County, MN, Dakota County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Le Sueur County, MN, Martin County, MN, Nicollet County, MN, Rice County, MN, Scott County, MN, Steele County, MN, Waseca County, MN, Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 150 km from the middle of the area, began a volume at 01:03 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
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- 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
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 8:07 PM CDT | Tornado Warning | MPX | Blue Earth | 38 min |
| Aug 1, 8:29 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 31 min |
| Aug 1, 8:31 PM CDT | Severe Thunderstorm Warning | MPX | Faribault | 44 min |
| Aug 1, 9:01 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 37 min |
| Aug 1, 9:14 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault, Freeborn, Waseca | 61 min |
| Aug 1, 9:22 PM CDT | Flash Flood Warning | MPX | Faribault, Freeborn, Martin | 3 hr |
| Aug 1, 9:44 PM CDT | Flash Flood Warning | DMX | Emmet | 6 hr |
| Aug 1, 10:20 PM CDT | Flash Flood Warning | DMX | Kossuth, Palo Alto | 6 hr |
| Aug 1, 10:21 PM CDT | Flash Flood Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 6 hr |
| Aug 1, 11:02 PM CDT | Flash Flood Warning | DMX | Pocahontas | 6 hr |
| Aug 1, 11:54 PM CDT | Flash Flood Warning | MPX | Faribault, Freeborn, Martin | 2 hr |
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 00:00Z, 1.0 hours before the alert went out and 149 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
- 778 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 476 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 215 m²/s²
- 0-3 km storm-relative helicity
- 479 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 7.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 7:17 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo and 30 more | 118 min |
| Aug 1, 11:51 PM CDT | Mesoscale Discussion | SPC | Bremer, Butler, Calhoun, Carroll, Cerro Gordo, Chickasaw and 11 more | 54 min |
| Aug 2, 1:16 AM CDT | Mesoscale Discussion | SPC | Allamakee, Chickasaw, Clayton, Fayette, Winneshiek | 119 min |
| Aug 2, 12:42 PM CDT | Mesoscale Discussion | SPC | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more | 2 hr |
| Aug 2, 1:16 PM CDT | Mesoscale Discussion | SPC | Taylor | 119 min |
| Aug 2, 5:13 PM CDT | Mesoscale Discussion | SPC | Appanoose, Decatur, Ringgold, Taylor, Wayne | 2 hr |
| Aug 2, 5:46 PM CDT | Severe Thunderstorm Watch | SPC | Decatur, Fremont, Page, Ringgold, Taylor, Wayne | 6 hr |
| Aug 2, 5:52 PM CDT | Mesoscale Discussion | SPC | Jackson | 113 min |
Nearby
Tornado Watches in Minnesota, 2006Tornado Watches in Iowa, 2006Every tornado 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.