Alert archive / Montana / Wind Advisories in 2014

Wind Advisory 18, NWS Missoula, MT

July 24, 20144 counties in Montana

NWS Missoula, MT issued this wind advisory at Jul 24, 2014, 5:25 AM MDT for 4 counties in Montana. It took effect at Jul 24, 2014, 12:00 PM MDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Jul 24, 2014, 5:25 AM MDT (11:25 UTC)
In effect from
Jul 24, 2014, 12:00 PM MDT
Expired
Jul 24, 2014, 9:36 PM MDT
In force
10 hr
Issued by
NWS Missoula, MT

Counties Flathead County, MT, Lake County, MT, Lincoln County, MT, Sanders County, MT

The radar

The Missoula radar (KMSX), 122 km from the middle of the area, began a volume at 11:28 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, 11.4 hours before the alert went out and 135 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 00:00Z on 2014-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2014-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -100 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1575 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
-100 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

163 
WWUS75 KMSO 241125
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
525 AM MDT THU JUL 24 2014

...STRONG WINDS ACROSS NORTHWEST MONTANA BEGINNING THIS AFTERNOON...

MTZ001>003-250600-
/O.CAN.KMSO.WI.Y.0017.000000T0000Z-140725T0600Z/
/O.NEW.KMSO.WI.Y.0018.140724T1800Z-140725T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
FLATHEAD/MISSION VALLEYS-
525 AM MDT THU JUL 24 2014

...WIND ADVISORY IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT
TONIGHT...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT
TONIGHT. 

* IMPACTS/TIMING: WINDS WILL BEGIN TO INCREASE THIS MORNING AND
  BECOME GUSTY THIS AFTERNOON IN NORTHWEST MONTANA. GUSTY WINDS
  THIS AFTERNOON WILL CREATE HAZARDOUS WAVE CONDITIONS ON FLATHEAD
  LAKE AND IMPACT TRAVEL OVER LOGAN PASS IN GLACIER PARK. WINDS
  WILL DISSIPATE FOR MUCH OF THE REGION BY LATE THIS EVENING.

* WINDS: BECOMING SOUTHWEST 15 TO 25 MPH GUSTING TO 35 MPH DURING
  THE EARLY AFTERNOON...INCREASING 20 TO 30 MPH GUSTING TO 40 MPH.
  OVER LOGAN PASS SOUTHWEST 20 TO 30 MPH GUSTING TO 60 MPH THIS AFTERNOON.

* WAVES: 2 TO 4 FOOT WAVES ON FLATHEAD LAKE.

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 2 KALISPELL TO LIBBY... 
  HIGHWAY 37 EUREKA TO LIBBY...HIGHWAY 56 BULL LAKE ROAD...
  HIGHWAY 93 EUREKA TO WHITEFISH...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
759 
WWUS75 KMSO 250336
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
936 PM MDT THU JUL 24 2014

MTZ001>003-250445-
/O.CAN.KMSO.WI.Y.0018.000000T0000Z-140725T0600Z/
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
FLATHEAD/MISSION VALLEYS-
936 PM MDT THU JUL 24 2014

...WIND ADVISORY IS CANCELLED...

BREEZY CONDITIONS WILL PERSIST FOR A FEW MORE HOURS. BUT THE
POTENTIAL FOR STRONG WINDS HAS PASSED AND THUS THE NATIONAL
WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WIND ADVISORY.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 6:09 PM MDTSevere Thunderstorm WarningMSOLincoln, Sanders36 min
Jul 23, 6:43 PM MDTSevere Thunderstorm WarningMSOLincoln47 min
Jul 23, 6:57 PM MDTSpecial Weather StatementMSOLincoln48 min
Jul 23, 7:43 PM MDTSevere Thunderstorm WarningMSOGranite, Powell29 min
Jul 23, 7:57 PM MDTSevere Thunderstorm WarningMSOSilver Bow36 min
Jul 23, 8:02 PM MDTSpecial Weather StatementMSO28 min
Jul 23, 8:11 PM MDTSevere Thunderstorm WarningMSOGranite, Powell23 min

Nearby

Wind Advisories in Montana, 2014Every wind advisory in 2014

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.