Alert archive / Montana / Wind Advisories in 2025
Wind Advisory 21, NWS Billings, MT
NWS Billings, MT issued this wind advisory at Dec 5, 2025, 1:19 PM MST for Park County, Montana. It took effect at Dec 5, 2025, 6:00 PM MST. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Dec 5, 2025, 1:19 PM MST (20:19 UTC)
- In effect from
- Dec 5, 2025, 6:00 PM MST
- Expired
- Dec 6, 2025, 12:49 AM MST
- In force
- 7 hr
- Issued by
- NWS Billings, MT
County Park County, MT
The radar
The Billings radar (KBLX), 155 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.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 8.3 hours before the alert went out and 318 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
- 1597 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Billings, MT wrote its last area forecast discussion before this wind advisory went out at Dec 4, 1:45 PM MST, 23 hours 34 minutes earlier.
Area forecast discussion, Dec 4, 1:45 PM MST, 23 hours 34 minutes before
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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.