Alert archive / Montana / Wind Advisories in 2022

Wind Advisory 13, NWS Missoula, MT

August 5, 2022Flathead County, Lake County, Sanders County, Montana

NWS Missoula, MT issued this wind advisory at Aug 5, 2022, 8:15 AM MDT for Flathead County, Lake County, Sanders County, Montana. It took effect at Aug 5, 2022, 9:00 PM MDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Aug 5, 2022, 8:15 AM MDT (14:15 UTC)
In effect from
Aug 5, 2022, 9:00 PM MDT
Expired
Aug 6, 2022, 6:00 AM MDT
In force
9 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 14:11 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 12:00Z, 2.3 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.

Skew-T log-pSkew-T log-p diagram, Spokane, WA at 12:00Z on 2022-08-05Temperature 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, Spokane, WA at 12:00Z on 2022-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 square meters per square second.1939587897117Sfc1 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
1778 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
141 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

950 
WWUS75 KMSO 051415
NPWMSO

URGENT - WEATHER MESSAGE
National Weather Service Missoula MT
815 AM MDT Fri Aug 5 2022

MTZ003-061200-
/O.NEW.KMSO.WI.Y.0013.220806T0300Z-220806T1200Z/
Flathead/Mission Valleys-
815 AM MDT Fri Aug 5 2022

...WIND ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 6 AM MDT
SATURDAY...

* WHAT...Northeast winds 20 to 35 mph with gusts to 45 mph on the
  east shore of Flathead Lake and for eastern portions of the
  Flathead and Mission Valleys near the Swan and Mission Ranges.
  Elsewhere, northeast winds 10 to 15 mph with gusts to 25 mph.
 
* WHERE...Flathead Lake, Flathead Valley, Mission Valley, and 
  Polson.

* WHEN...From 9 PM this evening to 6 AM MDT Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.
  Choppy lake conditions will develop quickly this evening with
  the arrival of northeast winds. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

Nearby

Wind Advisories in Montana, 2022Every wind advisory in 2022

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.