Alert archive / Montana / Mesoscale Discussions in 2016
Mesoscale Discussion 1361
The Storm Prediction Center issued this mesoscale discussion at Jul 22, 2016, 2:19 PM MDT for 15 counties in Montana. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 22, 2016, 2:19 PM MDT (20:19 UTC)
- Expired
- Jul 22, 2016, 4:45 PM MDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
Counties Blaine County, MT, Chouteau County, MT, Fergus County, MT, Golden Valley County, MT, Hill County, MT, Judith Basin County, MT, Liberty County, MT, Musselshell County, MT, Petroleum County, MT, Phillips County, MT, Stillwater County, MT, Toole County, MT, Treasure County, MT, Wheatland County, MT, Yellowstone County, MT
The radar
The Great Falls radar (KTFX), 146 km from the middle of the area, began a volume at 20:20 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.
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 8.3 hours before the alert went out and 87 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
- 7 J/kg
- Mixed-layer CIN
- -633 J/kg
- Mixed-layer LCL
- 2840 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 1:17 PM MDT | Mesoscale Discussion | SPC | Carter, Custer, Dawson, Fallon, Prairie, Richland and 1 more | 2 hr |
| Jul 22, 3:06 PM MDT | Severe Thunderstorm Watch | SPC | Carter, Custer, Daniels, Dawson, Fallon, McCone and 6 more | 9 hr |
Nearby
Mesoscale Discussions in Montana, 2016Every mesoscale discussion 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.