Alert archive / Montana / Lake Wind Advisories in 2021
Lake Wind Advisory 33, NWS Glasgow, MT
NWS Glasgow, MT issued this lake wind advisory at Sep 14, 2021, 1:33 PM MDT for 5 counties in Montana. It took effect at Sep 15, 2021, 9:00 AM MDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Sep 14, 2021, 1:33 PM MDT (19:33 UTC)
- In effect from
- Sep 15, 2021, 9:00 AM MDT
- Expired
- Sep 15, 2021, 7:13 PM MDT
- In force
- 10 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 19:33 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
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 7.6 hours before the alert went out and 67 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
- 1651 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this lake wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Glasgow, MT wrote its last area forecast discussion before this lake wind advisory went out at Sep 14, 5:10 AM MDT, 8 hours 23 minutes earlier.
Area forecast discussion, Sep 14, 5:10 AM MDT, 8 hours 23 minutes before
Area Forecast Discussion National Weather Service Glasgow MT 510 AM MDT Tue Sep 14 2021 .DISCUSSION... A weak ridge will be over the region today with warming temperatures and sunny skies. A front will move through northeast Montana on Wednesday bringing strong winds and low afternoon humidity. Winds could gust to 45 mph in some areas with widespread gusts of 30-40 mph expected. A Fire Weather Watch remains in effect for areas generally south of US Highway 2 for Wednesday afternoon and evening. See the fire weather discussion below for more details. Much cooler conditions will follow the front with Canadian high pressure pushing south and ushering in the more fall-like temperatures. Some places near the Canadian border could see near freezing temperatures by Friday morning. Temperatures will moderate through the weekend as upper flow turns southwest with stronger trof digging off the west coast. RAE && .AVIATION... VFR. Patchy clouds will clear the region this morning, for mostly sunny skies this afternoon. && .FIRE WEATHER... A front will move through on Wednesday bringing strong winds and low RH to parts of Northeast Montana, primarily south of the Missouri River. Wind gusts to 40 mph will be possible out of the west. These winds, combined with afternoon minimum RHs near or just below 20 percent, have led to the issuance of Fire Weather Watch for Wednesday afternoon and evening. && .GLASGOW WATCHES/WARNINGS/ADVISORIES... Fire Weather Watch from Wednesday afternoon through Wednesday evening for MTZ122-136-137. && weather.gov/glasgow
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 1:08 PM MDT | Red Flag Warning | GGW | Daniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more | 30 hr |
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.