Winter Weather Warnings / Watches / Advisories
Issued by NWS Missoula, MT

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WWUS45 KMSO 221811
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1211 PM MDT FRI AUG 22 2014

MTZ002-043-230300-
/O.NEW.KMSO.WW.Y.0052.140823T0400Z-140823T1800Z/
WEST GLACIER REGION-POTOMAC/SEELEY LAKE REGION-
1211 PM MDT FRI AUG 22 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO
NOON MDT SATURDAY ABOVE 6500 FEET...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW ABOVE 6500 FEET...WHICH IS IN EFFECT
FROM 10 PM THIS EVENING TO NOON MDT SATURDAY.

* IMPACTS/TIMING: AN UNSEASONABLY COLD CANADIAN AIR MASS WILL
  DESCEND UPON THE CONTINENTAL DIVIDE OVERNIGHT...WITH AIR
  TEMPERATURES STEADILY COOLING THROUGH SATURDAY. AT THE SAME TIME
  PRECIPITATION WILL STEADILY INTENSIFY ALONG THE CONTINENTAL
  DIVIDE THIS EVENING AND CONTINUE AT A VERY HEAVY RATE THROUGH
  SATURDAY MORNING. THIS COMBINATION WILL DRIVE THE SNOW LEVEL
  DOWN TO BETWEEN 6500 AND 7000 FEET.

* ADDITIONAL IMPACTS: PERSONS HIKING...TRAVELING OR RECREATING
  BETWEEN 5000 FEET AND 6500 FEET SHOULD BE PREPARED FOR A VERY COLD
  RAIN...WHICH WHEN COMBINED WITH WINDS OF 10 TO 20 MPH AND AIR
  TEMPERATURES IN THE 30S AND 40S COULD HEIGHTEN HYPOTHERMIA
  CONCERNS.

* SNOW ACCUMULATIONS: 1 TO 3 INCHES BETWEEN 6500 FEET AND
  7000 FEET...INCLUDING LOGAN PASS. 2 TO 5 INCHES ABOVE 7000 FEET.
  LOCALLY HIGHER AMOUNTS OF UP TO 8 INCHES ARE POSSIBLE ON THE
  HIGHEST PEAKS OF THE BOB MARSHALL WILDERNESS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. IN THIS CASE THE MOST
SIGNIFICANT IMPACTS WILL BE FELT TO THOSE HIKING AND VISITING THE
HIGHER TERRAIN TRAILS AND USFS ROADS. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

DICKERSON










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