Alert archive / Minnesota / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 407
The Storm Prediction Center issued this severe thunderstorm watch at Jul 12, 2015, 9:59 PM CDT for 13 counties in Iowa; 32 counties in Minnesota; 21 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2015, 9:59 PM CDT (02:59 UTC)
- Expired
- Jul 13, 2015, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 70 kt
All 66 counties
Allamakee County, IA, Bremer County, IA, Butler County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Anoka County, MN, Blue Earth County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Houston County, MN, Kandiyohi County, MN, Le Sueur County, MN, McLeod County, MN, Meeker County, MN, Mower County, MN, Nicollet County, MN, Olmsted County, MN, Ramsey County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Winona County, MN, Wright County, MN, Barron County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Crawford County, WI, Dunn County, WI, Eau Claire County, WI, Grant County, WI, Jackson County, WI, Juneau 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, Taylor County, WI, Trempealeau County, WI, Vernon County, WI
The radar
The Minneapolis radar (KMPX), 79 km from the middle of the area, began a volume at 02:59 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
- 2%
- Ten or more severe wind reports
- 50%
- 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
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 9:59 PM CDT | Severe Thunderstorm Warning | MPX | Polk, Saint Croix | 61 min |
| Jul 12, 10:18 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Dunn | 57 min |
| Jul 12, 10:32 PM CDT | Severe Thunderstorm Warning | MPX | Meeker, Stearns, Wright | 26 min |
| Jul 12, 10:55 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin, Wright | 35 min |
| Jul 12, 11:18 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Scott | 19 min |
| Jul 12, 11:26 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Dunn, Rusk | 49 min |
| Jul 13, 12:03 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Dunn, Eau Claire | 42 min |
| Jul 13, 2:39 AM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 51 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 7:51 PM CDT | Mesoscale Discussion | SPC | Dickinson, Emmet, Kossuth, Winnebago | 114 min |
| Jul 12, 9:03 PM CDT | Mesoscale Discussion | SPC | Allamakee, Chickasaw, Howard, Winneshiek | 117 min |
| Jul 12, 9:41 PM CDT | Mesoscale Discussion | SPC | Bremer, Butler, Cerro Gordo, Chickasaw, Floyd, Hancock and 4 more | 94 min |
| Jul 12, 11:55 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 7 more | 95 min |
| Jul 13, 2:00 AM CDT | Mesoscale Discussion | SPC | Allamakee, Clayton, Fayette, Winneshiek | 2 hr |
| Jul 13, 3:11 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee | 6 hr |
| Jul 13, 3:21 PM CDT | Mesoscale Discussion | SPC | Clinton | 84 min |
| Jul 13, 4:01 PM CDT | Tornado Watch | SPC | Cedar, Clinton, Des Moines, Dubuque, Jackson, Jones and 3 more | 7 hr |
| Jul 13, 6:59 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Des Moines, Dubuque, Jackson, Jones and 4 more | 91 min |
| Jul 12, 8:16 PM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Clay, Clearwater, Douglas, Grant and 13 more | 59 min |
| Jul 13, 1:51 PM CDT | Mesoscale Discussion | SPC | Anoka, Chisago, Dakota, Goodhue, Ramsey, Wabasha and 2 more | 84 min |
| Jul 13, 6:09 PM CDT | Mesoscale Discussion | SPC | Houston, Wabasha, Winona | 66 min |
| Jul 13, 3:49 AM CDT | Mesoscale Discussion | SPC | Kenosha, Rock, Walworth | 116 min |
| Jul 13, 4:14 AM CDT | Severe Thunderstorm Watch | SPC | Green, Jefferson, Kenosha, Lafayette, Milwaukee, Ozaukee and 5 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2015Severe Thunderstorm Watches in Wisconsin, 2015Severe Thunderstorm Watches in Iowa, 2015Every severe thunderstorm watch in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.