High Wind Warning 4, NWS Missoula, MT

691 
WWUS75 KMSO 080511
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1011 PM MST THU NOV 7 2013

MTZ007-080615-
/O.CAN.KMSO.HW.W.0004.000000T0000Z-131108T0900Z/
BUTTE/BLACKFOOT REGION-
1011 PM MST THU NOV 7 2013

...HIGH WIND WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE HIGH
WIND WARNING. 

WINDS HAVE DIMINISHED ALLOWING THE HIGH WIND WARNING TO BE CANCELLED

$$

MTZ005-080615-
/O.CAN.KMSO.WI.Y.0010.000000T0000Z-131108T0900Z/
MISSOULA/BITTERROOT VALLEYS-
1011 PM MST THU NOV 7 2013

...WIND ADVISORY IS CANCELLED...

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

WINDS HAVE DIMINISHED ALLOWING THE WIND ADVISORY TO BE CANCELLED

$$

Area Forecast Discussion
National Weather Service Missoula MT
331 PM MST Thu Nov 7 2013

...SNOW TO IMPACT PORTIONS OF NORTHERN ROCKIES THROUGH FRIDAY...

.DISCUSSION...

A vigorous Pacific storm system will move across the Northern
Rockies late this afternoon through late this evening, bringing a
mix of snow/rain at low elevations and snow to mountain passes.
Precipitation and wind will be temporarily intense along the
surface cold front. Impacts to the public will primarily be ice
and snow-packed roadways at mountain passes and some lower
elevations of northwest Montana. Wind will also be an impact,
particularly near Grangeville through this evening and for those
boating on Flathead Lake through tonight. Waves to 2 feet are
possible on Flathead Lake, impacting small watercraft. There
remains some uncertainty with how impacted larger western Montana
valleys, such as the Flathead and Missoula valleys, from snow
tonight. Right now, confidence is low that an impactful snow, more
than one half inch, will fall and/or that temperatures will be
cold enough to support ice/snow accumulation on area roadways and
sidewalks. A well-mixed environment behind the cold front this
evening will keep some breezes going across the region overnight
and will allow temperatures to rebound somewhat Friday afternoon.

Conditions across the Northern Rockies will begin to show some
improvement early Saturday. However showery conditions are still
expected throughout much of the day and may yield some minor
impacts to travelers over mountain passes and in the back-country.

This break will be short lived with precipitation returns to
northwest Montana late Saturday afternoon and then across the rest
of central Idaho and western Montana overnight, lasting into
Monday morning. A complex mix of wintry precipitation are again
possible throughout the valleys of northwest Montana, affecting
those living in the Yaak, Noxon, Olney, Eureka and the Flathead
Valley for example. Libby may even be thrown into the mixed
precipitation potential, though confidence is low due to a better
chance for their temperatures to remain warm overnight. Valley
accumulations are not expected to be all that much (less than 2
inches), but the impacts felt by mixed precipitation and the
resultant slushy roadways may be significant to travel Saturday
night through Sunday. In fact, those living and traveling near or
in Glacier National Park (Columbia Falls, Hungry Horse, etc.) may
actually experience a brief push of much colder air from east of
the Divide resulting in a potential bump in the snow to liquid
ratio and thus heavier accumulations. Winter weather highlights
may be needed for this potential. The system final begins to taper
off early Monday as a weak ridge begins to build into the region.

Models are all showing various ridging solutions on Tuesday of
next week but with a wide variety of ensemble solutions. Thus went
with a mean approach and not as amplified of a ridge. High
pressure will again be short lived as a very strong storm system
lies in wait over the Pacific. This storm system will likely help
initiate a larger scale pattern change and eventually bring a
return to colder, snowier weather; perhaps by next weekend.

&&

.AVIATION...Snow and rain will continue to impact the Northern
Rockies during the next 24 hours. The most significant impact to
terminals will be at KGPI, where snow continues to keep ceilings
and visibilities fairly low. A lesser, temporary impact from snow
will be seen at KMSO, KBTM, and KSMN through early Friday. Also
this evening, KSMN and KBTM will experience wind gusts to 25 knots
at times. Terrain obscurations will be commonplace throughout the
region during the next 24 hours as well.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...WINTER WEATHER ADVISORY until 11 AM MST Friday
     Bitterroot/Sapphire Mountains...Lower Clark Fork Region...
     West Glacier Region.

     WINTER WEATHER ADVISORY until 11 AM MST Friday Kootenai/Cabinet
     Region.

ID...WIND ADVISORY until 7 PM PST this evening for the Camas
     Prairie...Grangeville and Highway 95 IN THE
     Orofino/Grangeville Region.

     WINTER WEATHER ADVISORY until 10 AM PST Friday Southern
     Clearwater Mountains.

&&

Zumpfe/Dickerson
Aviation...Zumpfe

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
633 PM MST THU NOV 7 2013

...TIME...  ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
...DATE...  ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0524 PM     NON-TSTM WND GST 1 N GRANGEVILLE         45.94N 116.12W
11/07/2013  M46 MPH          IDAHO              ID   MESONET

            MESONET STATION GRANGEVILLE /GVLI1/

&&

NWS MISSOULA MT
IRIS SYSTEM