Alert archive / Montana / Lake Wind Advisories in 2015

Lake Wind Advisory 2, NWS Missoula, MT

March 31, 2015Flathead County, Lake County, Sanders County, Montana

NWS Missoula, MT issued this lake wind advisory at Mar 31, 2015, 3:39 AM MDT for Flathead County, Lake County, Sanders County, Montana. It took effect at Mar 31, 2015, 12:00 PM MDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Mar 31, 2015, 3:39 AM MDT (09:39 UTC)
In effect from
Mar 31, 2015, 12:00 PM MDT
Expired
Mar 31, 2015, 9:44 PM MDT
In force
10 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 09:36 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

Great_falls, MT (KTFX), launched 00:00Z, 9.7 hours before the alert went out and 290 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.

Skew-T log-pSkew-T log-p diagram, Great_falls, MT at 00:00Z on 2015-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Great_falls, MT at 00:00Z on 2015-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2803 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 31, 3:39 AM MDTWind AdvisoryMSODeer Lodge, Granite, Powell, Silver Bow18 hr
Mar 31, 9:22 AM MDTWinter Weather AdvisoryMSOLemhi24 hr

Nearby

Lake Wind Advisories in Montana, 2015Every lake wind advisory in 2015

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.