Alert archive / Montana / Lake Wind Advisories in 2009
Lake Wind Advisory 9, NWS Missoula, MT
NWS Missoula, MT issued this lake wind advisory at Oct 31, 2009, 3:35 AM MDT for Flathead County, Lake County, Sanders County, Montana. It took effect at Oct 31, 2009, 8:07 AM MDT. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Oct 31, 2009, 3:35 AM MDT (09:35 UTC)
- In effect from
- Oct 31, 2009, 8:07 AM MDT
- Expired
- Oct 31, 2009, 9:00 PM MDT
- In force
- 13 hr
- Issued by
- NWS Missoula, MT
Counties Flathead County, MT, Lake County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 98 km from the middle of the area, began a volume at 09:35 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
Spokane, WA (KOTX), launched 00:00Z, 9.6 hours before the alert went out and 149 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
- 796 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 270 m²/s²
- 0-3 km storm-relative helicity
- 275 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 Missoula, MT wrote its last area forecast discussion before this lake wind advisory went out at Oct 30, 2:46 PM MDT, 12 hours 49 minutes earlier.
Area forecast discussion, Oct 30, 2:46 PM MDT, 12 hours 49 minutes before
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</html>The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 31, 3:35 AM MDT | Wind Advisory | MSO | Deer Lodge, Flathead, Granite, Lake, Missoula, Powell and 1 more | 17 hr |
Nearby
Lake Wind Advisories in Montana, 2009Every lake wind advisory in 2009
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.