Alert archive / North Dakota / Severe Thunderstorm Watches in 2018
Severe Thunderstorm Watch 258
The Storm Prediction Center issued this severe thunderstorm watch at Jul 3, 2018, 1:59 AM CDT for 5 counties in Minnesota; 32 counties in North Dakota; 17 counties in South Dakota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 3, 2018, 1:59 AM CDT (06:59 UTC)
- Expired
- Jul 3, 2018, 9:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 54 counties
Big Stone County, MN, Clay County, MN, Norman County, MN, Traverse County, MN, Wilkin County, MN, Adams County, ND, Barnes County, ND, Billings County, ND, Bowman County, ND, Burleigh County, ND, Cass County, ND, Dickey County, ND, Dunn County, ND, Emmons County, ND, Foster County, ND, Grant County, ND, Griggs County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Wells County, ND, Brown County, SD, Campbell County, SD, Clark County, SD, Codington County, SD, Corson County, SD, Day County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hand County, SD, Harding County, SD, Marshall County, SD, McPherson County, SD, Perkins County, SD, Roberts County, SD, Spink County, SD, Walworth County, SD
The radar
The Bismarck radar (KBIS), 33 km from the middle of the area, began a volume at 07:01 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
- 50%
- 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
- 80%
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 2:02 AM CDT | Severe Thunderstorm Warning | UNR | Harding | 58 min |
| Jul 3, 2:18 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Billings, Bowman, Hettinger, Slope, Stark | 57 min |
| Jul 3, 2:43 AM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk, Potter | 37 min |
| Jul 3, 2:46 AM CDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 59 min |
| Jul 3, 3:15 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Grant, Hettinger, Morton, Sioux, Stark | 60 min |
| Jul 3, 3:51 AM CDT | Severe Thunderstorm Warning | BIS | Emmons, McIntosh | 54 min |
| Jul 3, 3:56 AM CDT | Severe Thunderstorm Warning | UNR | Perkins | 21 min |
| Jul 3, 4:12 AM CDT | Severe Thunderstorm Warning | BIS | Adams, Burleigh, Grant, Morton, Sioux | 63 min |
| Jul 3, 5:03 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons, Grant, Morton, Sioux | 57 min |
| Jul 3, 5:30 AM CDT | Severe Thunderstorm Warning | BIS | Emmons, Kidder, Logan, McIntosh, Stutsman | 60 min |
| Jul 3, 6:13 AM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure, Logan, McIntosh, Stutsman | 62 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
Bismarck Municip, ND (KBIS), launched 00:00Z, 7.0 hours before the alert went out and 34 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
- 86 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 2084 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 7:36 PM CDT | Severe Thunderstorm Watch | SPC | Big Stone, Traverse, Wilkin | 9 hr |
| Jul 2, 9:50 PM CDT | Mesoscale Discussion | SPC | Traverse, Wilkin | 115 min |
| Jul 2, 11:32 PM CDT | Mesoscale Discussion | SPC | Becker, Big Stone, Cass, Chippewa, Clay, Douglas and 14 more | 88 min |
| Jul 3, 4:15 AM CDT | Mesoscale Discussion | SPC | Big Stone, Clay, Norman, Traverse, Wilkin | 90 min |
| Jul 3, 7:01 AM CDT | Mesoscale Discussion | SPC | Becker, Cass, Clay, Clearwater, Douglas, Grant and 8 more | 119 min |
| Jul 3, 6:16 PM CDT | Mesoscale Discussion | SPC | Big Stone, Lac qui Parle, Lincoln, Traverse, Wilkin | 2 hr |
| Jul 3, 12:01 AM CDT | Mesoscale Discussion | SPC | Adams, Bowman, Golden Valley, Grant, Hettinger, Slope and 1 more | 89 min |
| Jul 3, 3:25 PM CDT | Mesoscale Discussion | SPC | Lawrence | 2 hr |
| Jul 3, 5:42 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Butte, Custer, Fall River, Haakon, Harding and 7 more | 7 hr |
| Jul 3, 6:42 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Clark, Day, Edmunds, Faulk, Hand and 8 more | 4 hr |
Nearby
Severe Thunderstorm Watches in North Dakota, 2018Severe Thunderstorm Watches in South Dakota, 2018Severe Thunderstorm Watches in Minnesota, 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.