Alert archive / Minnesota / Severe Thunderstorm Watches in 2020
Severe Thunderstorm Watch 367
The Storm Prediction Center issued this severe thunderstorm watch at Jul 13, 2020, 6:18 PM CDT for 14 counties in Minnesota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2020, 6:18 PM CDT (23:18 UTC)
- Expired
- Jul 14, 2020, 1:18 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Aitkin County, MN, Becker County, MN, Beltrami County, MN, Carlton County, MN, Cass County, MN, Clearwater County, MN, Crow Wing County, MN, Hubbard County, MN, Itasca County, MN, Koochiching County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Saint Louis County, MN, Wadena County, MN
The radar
The Duluth radar (KDLH), 141 km from the middle of the area, began a volume at 23:21 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
- 60%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 7:10 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Polk | 65 min |
| Jul 13, 8:07 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Hubbard | 38 min |
| Jul 13, 8:39 PM CDT | Severe Thunderstorm Warning | DLH | Cass, Itasca | 51 min |
| Jul 13, 8:39 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail, Wadena | 66 min |
| Jul 13, 10:35 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Itasca, Saint Louis | 40 min |
| Jul 13, 10:49 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 41 min |
| Jul 13, 11:10 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Itasca, Saint Louis | 50 min |
| Jul 13, 11:23 PM CDT | Severe Thunderstorm Warning | DLH | Cook, Lake, Saint Louis | 52 min |
| Jul 13, 11:57 PM CDT | Severe Thunderstorm Warning | DLH | Carlton, Lake, Saint Louis | 33 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
International Fa, MN (KINL), launched 12:00Z, 11.3 hours before the alert went out and 96 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
- 1430 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 17 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 |
|---|---|---|---|---|
| Jul 13, 3:52 PM CDT | Mesoscale Discussion | SPC | Beltrami, Clearwater, Kittson, Lake of the Woods, Mahnomen, Marshall and 5 more | 113 min |
Nearby
Severe Thunderstorm Watches in Minnesota, 2020Every severe thunderstorm watch in 2020
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.