Alert archive / Minnesota / Severe Thunderstorm Watches in 2012
Severe Thunderstorm Watch 389
The Storm Prediction Center issued this severe thunderstorm watch at Jun 14, 2012, 2:45 PM CDT for 28 counties in Minnesota; 7 counties in Wisconsin. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 14, 2012, 2:45 PM CDT (19:45 UTC)
- Expired
- Jun 14, 2012, 10:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 35 counties
Blue Earth County, MN, Brown County, MN, Carver County, MN, Cottonwood County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Jackson County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Nicollet County, MN, Olmsted County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Winona County, MN, Buffalo County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Saint Croix County, WI, Trempealeau County, WI
The radar
The Minneapolis radar (KMPX), 59 km from the middle of the area, began a volume at 19:45 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
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 2:58 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Polk, Saint Croix | 47 min |
| Jun 14, 2:59 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Goodhue, Rice | 46 min |
| Jun 14, 3:45 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 45 min |
| Jun 14, 4:50 PM CDT | Severe Thunderstorm Warning | ARX | Wabasha | 40 min |
| Jun 14, 4:54 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 36 min |
| Jun 14, 5:57 PM CDT | Flash Flood Warning | MPX | Dakota, Goodhue, Rice | 4 hr |
| Jun 14, 6:59 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 46 min |
| Jun 14, 7:09 PM CDT | Severe Thunderstorm Warning | ARX | Dodge, Olmsted, Wabasha | 49 min |
| Jun 14, 7:19 PM CDT | Flash Flood Warning | ARX | Wabasha | 3 hr |
| Jun 14, 7:29 PM CDT | Flash Flood Warning | MPX | Goodhue | 5 hr |
| Jun 14, 7:50 PM CDT | Severe Thunderstorm Warning | ARX | Olmsted, Wabasha, Winona | 25 min |
| Jun 14, 7:56 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Martin | 34 min |
| Jun 14, 8:25 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault, Freeborn, Waseca | 35 min |
| Jun 14, 8:28 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 29 min |
| Jun 14, 10:00 PM CDT | Flash Flood Warning | MPX | Dakota, Goodhue, Rice | 4 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 12:00Z, 7.8 hours before the alert went out and 58 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
- 1268 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 475 m²/s²
- 0-3 km storm-relative helicity
- 442 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 10:53 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Norman, Traverse, Wilkin | 5 hr |
| Jun 14, 3:01 AM CDT | Mesoscale Discussion | SPC | Big Stone, Douglas, Grant, Otter Tail, Pope, Stevens and 2 more | 89 min |
| Jun 14, 7:37 AM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Carver, Chisago, Dakota, Hennepin and 9 more | 113 min |
| Jun 14, 1:44 PM CDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Chippewa, Cottonwood, Faribault, Jackson and 19 more | 2 hr |
| Jun 14, 2:31 PM CDT | Mesoscale Discussion | SPC | Clay, Marshall, Norman, Pennington, Polk, Red Lake and 1 more | 89 min |
Nearby
Severe Thunderstorm Watches in Minnesota, 2012Severe Thunderstorm Watches in Wisconsin, 2012Every severe thunderstorm watch in 2012
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.