Alert archive / Montana / Wind Advisories in 2017
Wind Advisory 14, NWS Billings, MT
NWS Billings, MT issued this wind advisory at Oct 31, 2017, 2:57 AM MDT for Park County, Stillwater County, Sweet Grass County, Montana. It took effect at Oct 31, 2017, 12:00 PM MDT. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Oct 31, 2017, 2:57 AM MDT (08:57 UTC)
- In effect from
- Oct 31, 2017, 12:00 PM MDT
- Expired
- Nov 1, 2017, 1:06 AM MDT
- In force
- 13 hr
- Issued by
- NWS Billings, MT
Counties Park County, MT, Stillwater County, MT, Sweet Grass County, MT
The radar
The Billings radar (KBLX), 107 km from the middle of the area, began a volume at 09:03 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 00:00Z, 9.0 hours before the alert went out and 313 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
- 1455 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 64 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 Oct 30, 9:45 PM MDT, 5 hours 12 minutes earlier.
Area forecast discussion, Oct 30, 9:45 PM MDT, 5 hours 12 minutes before
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</html>The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 31, 3:17 AM MDT | Winter Storm Warning | BYZ | Carbon, Park, Stillwater, Sweet Grass, Wheatland | 48 hr |
| Oct 31, 2:22 PM MDT | Winter Weather Advisory | BYZ | Carbon, Park, Stillwater, Sweet Grass | 37 hr |
| Oct 31, 2:34 PM MDT | Special Weather Statement | BYZ | Stillwater, Sweet Grass | 3 hr |
| Oct 31, 3:17 AM MDT | Winter Storm Watch | BYZ | 11 hr |
Nearby
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.