Alert archive / Montana / Wind Advisories in 2015

Wind Advisory 6, NWS Missoula, MT

June 12, 2015Flathead County, Lake County, Sanders County, Montana

NWS Missoula, MT issued this wind advisory at Jun 12, 2015, 10:22 AM MDT for Flathead County, Lake County, Sanders County, Montana. It took effect at Jun 12, 2015, 12:00 PM MDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Jun 12, 2015, 10:22 AM MDT (16:22 UTC)
In effect from
Jun 12, 2015, 12:00 PM MDT
Expired
Jun 12, 2015, 9:01 PM 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 16:27 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, 4.4 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 2015-06-12Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2015-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.1939587897Sfc1 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
2407 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

235 
WWUS75 KMSO 121622
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1022 AM MDT FRI JUN 12 2015

...STRONG WIND GUSTS TODAY...PORTIONS OF NORTHWEST MONTANA...

MTZ002-003-130300-
/O.NEW.KMSO.WI.Y.0006.150612T1800Z-150613T0300Z/
WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS-
1022 AM MDT FRI JUN 12 2015

...WIND ADVISORY IN EFFECT UNTIL 9 PM MDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 9 PM MDT THIS EVENING. 

* IMPACTS/TIMING: WINDS ACROSS NORTHWEST MONTANA WILL RAPIDLY
  INTENSIFY THIS MORNING AND CONTINUE THROUGH THIS EVENING.
  DANGEROUSLY ACTIVE WAVE CONDITIONS WILL DEVELOP ON AREA LAKES
  INCLUDING FLATHEAD LAKE. SMALL TREES AND LOOSE OBJECTS MAY BE
  DAMAGED BY SUDDEN WIND GUSTS.

* WINDS: LOW ELEVATIONS: 20 TO 30 MPH GUSTING TO 40 MPH...HIGH
  ELEVATIONS: 25 TO 35 MPH GUSTING TO 50 MPH.

* FLATHEAD LAKE WAVES: 2 TO 3 FEET IN THE AFTERNOON.

* LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY 
  83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE...FLATHEAD 
  LAKE...FLATHEAD VALLEY...MISSION VALLEY...POLSON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$
1 follow-up statement
779 
WWUS75 KMSO 130301
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
901 PM MDT FRI JUN 12 2015

MTZ002-003-130415-
/O.CAN.KMSO.WI.Y.0006.000000T0000Z-150613T0300Z/
WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS-
901 PM MDT FRI JUN 12 2015

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WIND
ADVISORY. 

WIDESPREAD STRONG GUSTS ARE NO LONGER EXPECTED. HOWEVER, BREEZY
WINDS WILL CONTINUE FOR A FEW HOURS AFTER SUNSET, AND CHOPPY
CONDITIONS WILL PERSIST INTO THE NIGHT OVER FLATHEAD LAKE.

$$

Nearby

Wind Advisories in Montana, 2015Every 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.