Alert archive / Montana / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 47, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jul 7, 2020, 2:43 PM MDT for Golden Valley County, Wheatland County, Montana. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 7, 2020, 2:43 PM MDT (20:43 UTC)
- Expired
- Jul 7, 2020, 3:21 PM MDT
- In force
- 38 min
- Issued by
- NWS Billings, MT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Golden Valley County, MT, Wheatland County, MT
The radar
The Billings radar (KBLX), 94 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 7, 1:14 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 8.7 hours before the alert went out and 142 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
- 632 J/kg
- Mixed-layer CIN
- -264 J/kg
- Mixed-layer LCL
- 1637 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 265 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 6:02 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 22 min |
| Jul 7, 1:37 PM MDT | Special Weather Statement | BYZ | Sweet Grass | 23 min |
| Jul 7, 1:44 PM MDT | Severe Thunderstorm Warning | BYZ | Park, Sweet Grass | 61 min |
| Jul 7, 2:02 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 43 min |
| Jul 7, 3:24 PM MDT | Special Weather Statement | BYZ | Golden Valley | 51 min |
| Jul 7, 3:38 PM MDT | Special Weather Statement | BYZ | Park | 52 min |
| Jul 7, 3:42 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell, Stillwater | 63 min |
| Jul 7, 4:07 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 53 min |
| Jul 7, 4:08 PM MDT | Special Weather Statement | BYZ | Yellowstone | 37 min |
| Jul 7, 4:42 PM MDT | Special Weather Statement | BYZ | Yellowstone | 33 min |
| Jul 7, 4:44 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell, Rosebud | 61 min |
| Jul 7, 4:52 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River, Rosebud | 53 min |
| Jul 7, 5:07 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 38 min |
| Jul 7, 5:41 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud, Treasure, Yellowstone | 64 min |
| Jul 7, 5:43 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 62 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2020Every severe thunderstorm warning in 2020
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.