Alert archive / Minnesota / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 410
The Storm Prediction Center issued this severe thunderstorm watch at Jul 11, 2017, 10:00 PM CDT for 37 counties in Minnesota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 11, 2017, 10:00 PM CDT (03:00 UTC)
- Expired
- Jul 12, 2017, 4:28 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 37 counties
Anoka County, MN, Benton County, MN, Brown County, MN, Carver County, MN, Cass County, MN, Chippewa County, MN, Chisago County, MN, Crow Wing County, MN, Dakota County, MN, Douglas County, MN, Goodhue County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Nicollet County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Washington County, MN, Wright County, MN, Yellow Medicine County, MN
The radar
The Minneapolis radar (KMPX), 106 km from the middle of the area, began a volume at 03:03 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- 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
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 11:14 PM CDT | Severe Thunderstorm Warning | MPX | Douglas | 46 min |
| Jul 11, 11:27 PM CDT | Severe Thunderstorm Warning | MPX | Pope | 33 min |
| Jul 11, 11:59 PM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope, Stearns, Todd | 46 min |
| Jul 12, 12:10 AM CDT | Severe Thunderstorm Warning | MPX | Mille Lacs, Morrison | 35 min |
| Jul 12, 12:45 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope, Stearns, Todd | 21 min |
| Jul 12, 12:46 AM CDT | Severe Thunderstorm Warning | MPX | Kanabec, Mille Lacs | 44 min |
| Jul 12, 1:44 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Benton, Isanti, Mille Lacs, Sherburne | 46 min |
| Jul 12, 2:48 AM CDT | Severe Thunderstorm Warning | MPX | Dakota, Ramsey, Washington | 27 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 00:00Z, 3.0 hours before the alert went out and 104 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
- 913 J/kg
- Mixed-layer CIN
- -179 J/kg
- Mixed-layer LCL
- 1279 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 7:09 PM CDT | Mesoscale Discussion | SPC | Clay, Norman, Polk | 2 hr |
| Jul 12, 1:49 AM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Carver, Cass, Chisago, Crow Wing and 21 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2017Every severe thunderstorm watch in 2017
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.