Alert archive / North Dakota / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 247
The Storm Prediction Center issued this severe thunderstorm watch at Jun 11, 2016, 5:51 PM MDT for 19 counties in North Dakota; 5 counties in South Dakota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 11, 2016, 5:51 PM MDT (23:51 UTC)
- Expired
- Jun 12, 2016, 1:00 AM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 65 kt
All 24 counties
Adams County, ND, Billings County, ND, Bowman County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Williams County, ND, Corson County, SD, Dewey County, SD, Harding County, SD, Perkins County, SD, Ziebach County, SD
The radar
The Bismarck radar (KBIS), 146 km from the middle of the area, began a volume at 23:51 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
- 50%
- One or more gusts of 65 knots or more
- 40%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 6:11 PM MDT | Severe Thunderstorm Warning | UNR | Harding, Perkins | 64 min |
| Jun 11, 7:09 PM MDT | Severe Thunderstorm Warning | BIS | Golden Valley, Slope | 31 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, 11.9 hours before the alert went out and 150 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
- 8 J/kg
- Mixed-layer CIN
- -622 J/kg
- Mixed-layer LCL
- 1742 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 399 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 11, 12:03 AM MDT | Mesoscale Discussion | SPC | Billings, Dunn, Mercer, Stark | 87 min |
| Jun 11, 2:50 PM MDT | Mesoscale Discussion | SPC | Billings, Bowman, Golden Valley, McKenzie, Slope, Williams | 85 min |
| Jun 11, 5:18 PM MDT | Mesoscale Discussion | SPC | Adams, Bowman, Grant, Hettinger, Sioux, Slope | 117 min |
Nearby
Severe Thunderstorm Watches in North Dakota, 2016Severe Thunderstorm Watches in South Dakota, 2016Every severe thunderstorm watch in 2016
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.