Alert archive / North Dakota / Tornado Watches in 2018
Tornado Watch 234
The Storm Prediction Center issued this tornado watch at Jun 28, 2018, 2:16 PM MDT for 37 counties in North Dakota. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 28, 2018, 2:16 PM MDT (20:16 UTC)
- Expired
- Jun 28, 2018, 10:00 PM MDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 4 in
- Strongest gust expected
- 60 kt
All 37 counties
Adams County, ND, Barnes County, ND, Benson County, ND, Billings County, ND, Bowman County, ND, Burleigh County, ND, Dickey County, ND, Dunn County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Golden Valley County, ND, Grant County, ND, Griggs County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Nelson County, ND, Oliver County, ND, Pierce County, ND, Ramsey County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Stutsman County, ND, Ward County, ND, Wells County, ND, Williams County, ND
The radar
The Bismarck radar (KBIS), 89 km from the middle of the area, began a volume at 20:18 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
- 60%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 90%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 90%
- One or more hailstones of 2 inches or more
- 70%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 3:17 PM MDT | Severe Thunderstorm Warning | BIS | McKenzie | 43 min |
| Jun 28, 4:04 PM MDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 23 min |
| Jun 28, 5:32 PM MDT | Severe Thunderstorm Warning | BIS | Dunn | 58 min |
| Jun 28, 6:09 PM MDT | Severe Thunderstorm Warning | BIS | McHenry, Pierce, Sheridan, Wells | 66 min |
| Jun 28, 6:30 PM MDT | Severe Thunderstorm Warning | BIS | Dunn | 60 min |
| Jun 28, 6:48 PM MDT | Flash Flood Warning | BIS | Dunn | 9 hr |
| Jun 28, 7:10 PM MDT | Tornado Warning | BIS | Dunn | 35 min |
| Jun 28, 7:17 PM MDT | Severe Thunderstorm Warning | FGF | Benson | 28 min |
| Jun 28, 7:24 PM MDT | Severe Thunderstorm Warning | BIS | Pierce, Sheridan, Wells | 51 min |
| Jun 28, 7:44 PM MDT | Tornado Warning | BIS | Dunn | 31 min |
| Jun 28, 7:47 PM MDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 58 min |
| Jun 28, 8:11 PM MDT | Flash Flood Warning | BIS | Dunn, McLean, Mercer | 6 hr |
| Jun 28, 8:11 PM MDT | Severe Thunderstorm Warning | BIS | Wells | 28 min |
| Jun 28, 8:16 PM MDT | Severe Thunderstorm Warning | BIS | Dunn | 59 min |
| Jun 28, 8:46 PM MDT | Severe Thunderstorm Warning | BIS | Burke, Dunn, McKenzie, Mountrail, Williams | 59 min |
| Jun 28, 9:07 PM MDT | Severe Thunderstorm Warning | BIS | Dunn, McLean, Mercer | 53 min |
| Jun 28, 9:26 PM MDT | Flash Flood Warning | BIS | Bottineau, Burke, Renville, Ward | 6 hr |
| Jun 28, 9:36 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley, Slope | 54 min |
| Jun 28, 9:41 PM MDT | Severe Thunderstorm Warning | BIS | Burke, McKenzie, Mountrail, Ward, Williams | 64 min |
| Jun 28, 9:46 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Dunn, McKenzie, McLean, Mercer, Mountrail | 59 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, 8.3 hours before the alert went out and 92 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
- 1855 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 945 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 2:52 AM MDT | Mesoscale Discussion | SPC | Barnes, Burleigh, Cass, Dickey, Emmons, Foster and 12 more | 83 min |
| Jun 28, 6:40 AM MDT | Mesoscale Discussion | SPC | Adams, Barnes, Burleigh, Cass, Dickey, Emmons and 18 more | 3 hr |
| Jun 28, 12:06 PM MDT | Mesoscale Discussion | SPC | Benson, Burleigh, Eddy, Foster, Grand Forks, Griggs and 8 more | 114 min |
| Jun 28, 12:33 PM MDT | Severe Thunderstorm Watch | SPC | Cass, Grand Forks, Steele, Traill | 6 hr |
| Jun 28, 2:35 PM MDT | Mesoscale Discussion | SPC | Billings, Bowman, Golden Valley, McKenzie, Slope | 2 hr |
| Jun 28, 2:53 PM MDT | Mesoscale Discussion | SPC | Cass, Grand Forks, Steele, Traill | 97 min |
| Jun 28, 4:23 PM MDT | Mesoscale Discussion | SPC | Grand Forks, Traill | 97 min |
| Jun 28, 5:59 PM MDT | Mesoscale Discussion | SPC | Adams, Benson, Billings, Bowman, Burleigh, Dunn and 22 more | 91 min |
Nearby
Tornado Watches in North Dakota, 2018Every tornado 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.