Alert archive / South Dakota / Severe Thunderstorm Watches in 2018
Severe Thunderstorm Watch 178
The Storm Prediction Center issued this severe thunderstorm watch at Jun 14, 2018, 2:40 PM MDT for 13 counties in North Dakota; 16 counties in South Dakota. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 14, 2018, 2:40 PM MDT (20:40 UTC)
- Expired
- Jun 14, 2018, 11:00 PM MDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 75 kt
All 29 counties
Adams County, ND, Bowman County, ND, Burleigh County, ND, Emmons County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, Morton County, ND, Sioux County, ND, Stark County, ND, Stutsman County, ND, Butte County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Haakon County, SD, Harding County, SD, Hughes County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD, Ziebach County, SD
The radar
The Bismarck radar (KBIS), 114 km from the middle of the area, began a volume at 20:43 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
- 10%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 70%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 4:06 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Harding | 54 min |
| Jun 14, 4:37 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Lawrence, Meade | 26 min |
| Jun 14, 4:59 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Harding, Perkins | 20 min |
| Jun 14, 5:01 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 44 min |
| Jun 14, 5:56 PM MDT | Severe Thunderstorm Warning | UNR | Perkins, Ziebach | 64 min |
| Jun 14, 6:12 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 63 min |
| Jun 14, 6:39 PM MDT | Severe Thunderstorm Warning | ABR | Corson | 38 min |
| Jun 14, 7:14 PM MDT | Severe Thunderstorm Warning | UNR | Ziebach | 25 min |
| Jun 14, 8:24 PM MDT | Severe Thunderstorm Warning | BIS | Emmons | 38 min |
| Jun 14, 9:49 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey, Walworth | 26 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 12:00Z, 8.7 hours before the alert went out and 116 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
- 1545 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 1:54 PM MDT | Mesoscale Discussion | SPC | Benson, Bottineau, Burke, Divide, McHenry, McKenzie and 9 more | 96 min |
| Jun 14, 1:58 PM MDT | Mesoscale Discussion | SPC | Adams, Grant, Hettinger | 62 min |
| Jun 14, 2:40 PM MDT | Tornado Watch | SPC | Bottineau, Burke, Divide, Dunn, McHenry, McKenzie and 10 more | 7 hr |
| Jun 14, 4:27 PM MDT | Mesoscale Discussion | SPC | Cavalier, Pembina, Towner | 93 min |
| Jun 14, 5:15 PM MDT | Mesoscale Discussion | SPC | Adams, Bowman, Burleigh, Emmons, Grant, Hettinger and 4 more | 90 min |
| Jun 14, 5:41 PM MDT | Mesoscale Discussion | SPC | Billings, Bottineau, Burke, Divide, Dunn, McHenry and 11 more | 94 min |
| Jun 13, 10:56 PM MDT | Mesoscale Discussion | SPC | Clay, Hanson, Lake, Lincoln, McCook, Miner and 4 more | 3 hr |
Nearby
Severe Thunderstorm Watches in South Dakota, 2018Severe Thunderstorm Watches in North 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.