Alert archive / Montana / Lake Wind Advisories in 2021
Lake Wind Advisory 24, NWS Glasgow, MT
NWS Glasgow, MT issued this lake wind advisory at Aug 7, 2021, 2:18 PM MDT for 5 counties in Montana. It took effect at Aug 8, 2021, 1:00 PM MDT. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Aug 7, 2021, 2:18 PM MDT (20:18 UTC)
- In effect from
- Aug 8, 2021, 1:00 PM MDT
- Expired
- Aug 9, 2021, 3:00 AM MDT
- In force
- 14 hr
- Issued by
- NWS Glasgow, MT
Counties Garfield County, MT, McCone County, MT, Petroleum County, MT, Phillips County, MT, Valley County, MT
The radar
The Glasgow radar (KGGW), 64 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
Bismarck Municip, ND (KBIS), launched 12:00Z, 8.3 hours before the alert went out and 496 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
- 309 J/kg
- Mixed-layer CIN
- -183 J/kg
- Mixed-layer LCL
- 993 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 10:18 PM MDT | Special Weather Statement | GGW | Wibaux | 27 min |
Nearby
Lake Wind Advisories in Montana, 2021Every lake wind advisory in 2021
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.