Alert archive / Montana / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 296
The Storm Prediction Center issued this severe thunderstorm watch at Jun 24, 2016, 4:16 PM MDT for 17 counties in Montana; 13 counties in North Dakota. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 24, 2016, 4:16 PM MDT (22:16 UTC)
- Expired
- Jun 25, 2016, 12:00 AM MDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 65 kt
All 30 counties
Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, Garfield County, MT, Golden Valley County, MT, McCone County, MT, Musselshell County, MT, Petroleum County, MT, Phillips County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Rosebud County, MT, Sheridan County, MT, Valley County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, McKenzie County, ND, Mountrail County, ND, Slope County, ND, Stark County, ND, Williams County, ND
The radar
The Glasgow radar (KGGW), 39 km from the middle of the area, began a volume at 22:18 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
- 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
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
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 |
|---|---|---|---|---|
| Jun 24, 4:19 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum | 56 min |
| Jun 24, 5:26 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 64 min |
| Jun 24, 6:02 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone | 58 min |
| Jun 24, 6:38 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, McCone, Roosevelt, Valley | 67 min |
| Jun 24, 6:48 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie | 57 min |
| Jun 24, 7:46 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Richland, Wibaux | 59 min |
| Jun 24, 7:50 PM MDT | Severe Thunderstorm Warning | GGW | Richland, Roosevelt, Sheridan | 55 min |
| Jun 24, 8:34 PM MDT | Severe Thunderstorm Warning | BIS | Burke, Divide, Dunn, McKenzie, McLean, Mountrail and 1 more | 56 min |
| Jun 24, 8:45 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 60 min |
| Jun 24, 9:30 PM MDT | Severe Thunderstorm Warning | BIS | Burke, Divide, Dunn, McKenzie, McLean, Mountrail and 1 more | 60 min |
| Jun 24, 10:18 PM MDT | Severe Thunderstorm Warning | BIS | Bottineau, Burke, McHenry, Mountrail, Renville, Ward | 57 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
Great_falls, MT (KTFX), launched 12:00Z, 10.3 hours before the alert went out and 330 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
- 1853 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 12:52 PM MDT | Mesoscale Discussion | SPC | Broadwater, Cascade, Chouteau, Fergus, Golden Valley, Jefferson and 4 more | 83 min |
| Jun 24, 3:51 PM MDT | Mesoscale Discussion | SPC | Blaine, Daniels, Dawson, Fergus, Garfield, Golden Valley and 15 more | 84 min |
Nearby
Severe Thunderstorm Watches in Montana, 2016Severe Thunderstorm Watches in North 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.