Alert archive / Minnesota / Severe Thunderstorm Watches in 2018
Severe Thunderstorm Watch 267
The Storm Prediction Center issued this severe thunderstorm watch at Jul 8, 2018, 3:52 PM CDT for 21 counties in Minnesota; 7 counties in North Dakota; 4 counties in South Dakota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 8, 2018, 3:52 PM CDT (20:52 UTC)
- Expired
- Jul 8, 2018, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 32 counties
Aitkin County, MN, Becker County, MN, Big Stone County, MN, Carlton County, MN, Cass County, MN, Clay County, MN, Cook County, MN, Crow Wing County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Itasca County, MN, Lake County, MN, Morrison County, MN, Otter Tail County, MN, Saint Louis County, MN, Stevens County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, LaMoure County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Brown County, SD, Day County, SD, Marshall County, SD, Roberts County, SD
The radar
The Fargo/Grand Forks radar (KMVX), 160 km from the middle of the area, began a volume at 20:56 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
- 40%
- 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
- 70%
Warnings issued inside it
31 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 4:36 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 24 min |
| Jul 8, 4:47 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 43 min |
| Jul 8, 5:20 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Mahnomen | 40 min |
| Jul 8, 5:25 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 35 min |
| Jul 8, 5:27 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 33 min |
| Jul 8, 5:51 PM CDT | Severe Thunderstorm Warning | FGF | Becker | 39 min |
| Jul 8, 5:55 PM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure | 65 min |
| Jul 8, 6:12 PM CDT | Severe Thunderstorm Warning | DLH | Cass, Itasca | 48 min |
| Jul 8, 6:17 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 43 min |
| Jul 8, 6:25 PM CDT | Tornado Warning | BIS | Dickey | 35 min |
| Jul 8, 6:26 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Hubbard, Otter Tail, Wadena | 64 min |
| Jul 8, 6:27 PM CDT | Severe Thunderstorm Warning | FGF | Ransom, Richland, Sargent | 52 min |
| Jul 8, 6:37 PM CDT | Tornado Warning | FGF | Ransom, Richland, Sargent | 38 min |
| Jul 8, 6:41 PM CDT | Tornado Warning | FGF | Sargent | 49 min |
| Jul 8, 6:45 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Itasca | 45 min |
| Jul 8, 6:48 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Otter Tail | 42 min |
| Jul 8, 7:02 PM CDT | Tornado Warning | FGF | Becker, Otter Tail | 43 min |
| Jul 8, 7:08 PM CDT | Severe Thunderstorm Warning | DLH | Cass | 34 min |
| Jul 8, 7:10 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom, Richland | 16 min |
| Jul 8, 7:11 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Otter Tail | 22 min |
| Jul 8, 7:12 PM CDT | Flash Flood Warning | DLH | Lake, Saint Louis | 4 hr |
| Jul 8, 7:20 PM CDT | Tornado Warning | FGF | Otter Tail | 40 min |
| Jul 8, 7:27 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Hubbard, Otter Tail, Wadena | 63 min |
| Jul 8, 7:37 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Wilkin | 23 min |
| Jul 8, 8:04 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 26 min |
| Jul 8, 8:26 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail, Wadena | 34 min |
| Jul 8, 8:36 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 24 min |
| Jul 8, 8:39 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Crow Wing | 36 min |
| Jul 8, 8:52 PM CDT | Severe Thunderstorm Warning | ABR | Day, Marshall | 23 min |
| Jul 8, 9:55 PM CDT | Severe Thunderstorm Warning | ABR | Day, Marshall | 65 min |
| Jul 8, 10:27 PM CDT | Severe Thunderstorm Warning | MPX | Morrison, Todd | 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, 8.9 hours before the alert went out and 262 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
- 2692 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 748 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 225 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 7.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 2:35 AM CDT | Mesoscale Discussion | SPC | Beltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Norman and 4 more | 85 min |
| Jul 8, 3:14 AM CDT | Severe Thunderstorm Watch | SPC | Beltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Pennington and 3 more | 5 hr |
| Jul 8, 5:30 AM CDT | Mesoscale Discussion | SPC | Beltrami, Clearwater, Itasca, Kittson, Koochiching, Lake of the Woods and 5 more | 90 min |
| Jul 8, 6:59 AM CDT | Severe Thunderstorm Watch | SPC | Cook, Itasca, Koochiching, Lake, Saint Louis | 4 hr |
| Jul 8, 9:23 AM CDT | Mesoscale Discussion | SPC | Cook, Lake, Saint Louis | 97 min |
| Jul 8, 1:16 PM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Clay, Clearwater, Hubbard, Mahnomen and 4 more | 2 hr |
| Jul 8, 5:46 PM CDT | Mesoscale Discussion | SPC | Aitkin, Becker, Benton, Big Stone, Carlton, Cass and 22 more | 119 min |
| Jul 7, 8:55 PM CDT | Mesoscale Discussion | SPC | Adams, Bowman, Burleigh, Emmons, Foster, Grant and 8 more | 65 min |
| Jul 7, 9:41 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bowman, Burleigh, Dunn, Emmons, Foster and 14 more | 7 hr |
| Jul 7, 11:44 PM CDT | Mesoscale Discussion | SPC | Adams, Barnes, Burleigh, Eddy, Emmons, Foster and 12 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2018Severe Thunderstorm Watches in North Dakota, 2018Severe Thunderstorm Watches in South Dakota, 2018Every severe thunderstorm watch in 2018
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.