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Winter Weather Advisory


URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
344 AM MDT SUN APR 26 2015

MTZ008-015-052-055-270000-
/O.NEW.KTFX.WW.Y.0019.150426T0944Z-150427T0000Z/
BEAVERHEAD-MADISON-JEFFERSON-GALLATIN-
344 AM MDT SUN APR 26 2015

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING
FOR ELEVATIONS ABOVE 6000 FEET...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR ELEVATIONS ABOVE 6000 FEET FOR SNOW... WHICH
IS IN EFFECT UNTIL 6 PM MDT THIS EVENING.

* TIMING AND MAIN IMPACT: ACCUMULATING SNOW WILL SPREAD EAST
  ACROSS THE MOUNTAINS OF SOUTHWEST MONTANA THROUGH THIS
  MORNING...AND CONTINUE THROUGH MOST OF THE DAY. LIGHT
  ACCUMULATING SLUSHY SNOW WILL MAKE TRAVEL DIFFICULT...ESPECIALLY
  OVER MOUNTAIN PASSES. A MIX OF RAIN AND SNOW WITH LESS
  ACCUMULATION IS EXPECTED IN THE VALLEYS. PRECIPITATION WILL
  GRADUALLY DECREASE FROM THE WEST BEGINNING THIS AFTERNOON.

* SNOW ACCUMULATIONS: ABOVE 6000 FEET...A TOTAL OF 2 TO 4 INCHES
  IS MOSTLY EXPECTED...BUT UP TO 7 INCHES ARE POSSIBLE ON SOME
  PEAKS. BELOW 6000 FEET...UP TO 2 INCHES ARE POSSIBLE.

* ELEVATIONS: FOR ELEVATIONS ABOVE 6000 FEET.

* OTHER IMPACTS: WET SNOW COULD CAUSE DAMAGE TO SOME TREES.
  ISOLATED POWER OUTAGES ARE ALSO POSSIBLE.

* LOCATIONS AFFECTED INCLUDE: BIG HOLE PASS...MONIDA PASS...
  RAYNOLDS PASS...BOZEMAN PASS...NORRIS HILL...TARGHEE PASS...
  WEST YELLOWSTONE.

* TO SEE A GRAPHICAL REPRESENTATION OF THIS HAZARD PLEASE VISIT
  OUR WEB PAGE AND CLICK ON THE DETAILED HAZARDS TAB:

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

FOR THE LATEST ROAD CONDITIONS...PLEASE DIAL 5 1 1.

&&

$$

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
229 AM MDT SUN APR 26 2015

...HEAVY WET SNOW EXPECTED IN THE NORTHERN AND WESTERN MOUNTAINS
THROUGH TONIGHT...

.A LARGE STORM WILL SLOWLY MOVE THROUGH THE REGION DEPOSITING AS
MUCH AS A FOOT OF VERY WET SNOW IN THE MOUNTAINS. TEMPERATURES
WILL BE ON THE WARM SIDE BUT QUICKLY ACCUMULATING SNOW...
ESPECIALLY EARLY THIS MORNING COULD MAKE TRAVEL DIFFICULT OVER
MOUNTAIN PASSES.

WYZ002-012-024-261815-
/O.CON.KRIW.WW.Y.0016.000000T0000Z-150427T0600Z/
ABSAROKA MOUNTAINS-TETON AND GROS VENTRE MOUNTAINS-
SALT RIVER AND WYOMING RANGES-
229 AM MDT SUN APR 26 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT.

* SUMMARY AND TIMING...PERIODS OF SNOW...HEAVY AT TIMES. THE
  HEAVIEST SNOW IS EXPECTED TO OCCUR BEFORE NOON.

* SNOW ACCUMULATIONS...6 TO 12 INCHES WITH THE MORE SIGNIFICANT
  ACCUMULATIONS EXPECTED ABOVE 8000 FEET.

* WIND AND VISIBILITY...EAST TO NORTHEAST WINDS OF 10 TO 25 MPH
  WILL DEVELOP WHICH COULD LEAD TO SOME DRIFTING SNOW. VISIBILITY
  WILL BE DETERMINED MOSTLY BY THE SNOWFALL RATE... DECREASING TO
  LESS THAN 1/2 MILE AT TIMES.

* IMPACTS...TETON AND TOGWOTEE MOUNTAIN PASSES WILL SEE SLUSHY TO
  SNOW PACKED CONDITIONS. THE WORST CONDITIONS ARE EXPECTED ON THE
  FREMONT COUNTY SIDE OF TOGWOTEE PASS...TOWARD DUBOIS. TRAVELERS
  ARE URGED TO ALLOW EXTRA TIME FOR TRAVEL OVER MOUNTAIN PASSES
  TODAY AND TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1107 PM MDT SAT APR 25 2015

IDZ010-262100-
/O.CON.KMSO.WW.Y.0030.000000T0000Z-150426T2100Z/
EASTERN LEMHI COUNTY-
1107 PM MDT SAT APR 25 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY.

* IMPACTS/TIMING: SNOW SHOWERS THIS EVENING MAY CAUSE BRIEF
  ACCUMULATIONS BUT THE MAIN FOCUS FOR SNOW WILL BE OVERNIGHT
  AND THROUGH SUNDAY MORNING.

* SNOW ACCUMULATIONS: 3 TO 5 INCHES ABOVE 5000 FEET. TRACE TO 1
  INCH BELOW 5000 FEET.

* LOCATIONS IMPACTED INCLUDE...BANNOCK PASS...HIGHWAY 28 TENDOY
  TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...
  LEMHI PASS...SALMON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1107 PM MDT SAT APR 25 2015

MTZ005-261600-
/O.CON.KMSO.WW.Y.0030.000000T0000Z-150426T1600Z/
MISSOULA/BITTERROOT VALLEYS-
1107 PM MDT SAT APR 25 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM MDT
SUNDAY ABOVE 4000 FEET...

A WINTER WEATHER ADVISORY ABOVE 4000 FEET REMAINS IN EFFECT UNTIL
10 AM MDT SUNDAY.

* IMPACTS/TIMING: PRECIPITATION WILL INTENSIFY OVER THE
  BITTERROOT VALLEY TONIGHT...WITH RAIN EVENTUALLY MIXING WITH
  OR CHANGING TO SNOW FOR MANY ELEVATIONS... ESPECIALLY ABOVE
  4000 FEET. HEAVY WET SNOW COULD SNAP TREE LIMBS AND LEAD TO
  POWER OUTAGES AT THOSE HIGHER ELEVATIONS.

* SNOW ACCUMULATIONS: 4 TO 6 INCHES FOR LOCATIONS ON THE
  PERIPHERY OF THE VALLEY. SLUSHY 1 TO 3 INCHES POSSIBLE IN
  GRASSY AREAS AT THE VALLEY FLOOR ABOVE 3500 FEET... SUCH AS
  HAMILTON AND DARBY.

&&

$$

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1107 PM MDT SAT APR 25 2015

MTZ006-262100-
/O.CON.KMSO.WW.Y.0030.000000T0000Z-150426T2100Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
1107 PM MDT SAT APR 25 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY.

* IMPACTS/TIMING: SNOW WILL ACCUMULATE ON LOLO AND LOST TRAIL
  PASSES OVERNIGHT AND THROUGH SUNDAY MORNING. SLUSHY SNOW
  ACCUMULATIONS MAY CREATE PERIODS OF DIFFICULT DRIVING
  CONDITIONS THROUGH SUNDAY MORNING.

* SNOW ACCUMULATIONS: 3 TO 6 INCHES.

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL
  PASS...LOLO PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1107 PM MDT SAT APR 25 2015

MTZ007-262100-
/O.CON.KMSO.WW.Y.0030.000000T0000Z-150426T2100Z/
BUTTE/BLACKFOOT REGION-
1107 PM MDT SAT APR 25 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY.

* IMPACTS/TIMING: SNOW SHOWERS WILL DEVELOP DURING THE AFTERNOON
  WITH BRIEF ACCUMULATIONS ON MOUNTAIN PASSES THROUGH THE
  EVENING. THE MAIN FOCUS FOR SNOW WILL BE OVERNIGHT AND DURING
  SUNDAY MORNING WITH MODERATE TO HEAVY SNOW POSSIBLE FROM 6AM
  TO 9AM SUNDAY MORNING. TRAVEL OVER HOMESTAKE PASS WILL BECOME
  ESPECIALLY DIFFICULT DURING HEAVY SNOW SHOWERS SUNDAY MORNING.

* SNOW ACCUMULATIONS: 4 TO 6 INCHES OVER HOMESTAKE AND MACDONALD
  PASSES AND GEORGETOWN LAKE. 1 TO 3 INCHES FROM DEER LODGE TO
  BUTTE.

* LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY
  12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$


Special Weather Statement


SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
153 AM MDT SUN APR 26 2015

WYZ001-261830-
YELLOWSTONE NATIONAL PARK-
153 AM MDT SUN APR 26 2015

ANOTHER CHANGE IN THE WEATHER IS ON THE WAY AS RAIN MIXES WITH
SNOW THIS MORNING. VERY WET SNOW WILL PERSIST THROUGH LATE MORNING
BEFORE CHANGING BACK TO ALL RAIN BELOW 6500 FEET. EXPECT
ACCUMULATIONS OF LESS THAN 2 INCHES ON GRASSY AREAS IN THE LOWER
VALLEYS...TO AS MUCH AS 4 OR 5 INCHES IN THE MOUNTAINS. SLUSHY AREAS
OF SNOW MAY BE PRESENT ON THE ROADWAYS THIS MORNING. THE WET
WEATHER WILL PERSIST THROUGH THE AFTERNOON BEFORE ENDING BY THIS
EVENING.

$$


Hazardous Weather Outlook


HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
400 AM MDT SUN APR 26 2015

WYZ001>020-022>030-271200-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
400 AM MDT SUN APR 26 2015

...A WINTER WEATHER ADVISORY IS IN EFFECT FOR PORTIONS OF CENTRAL
AND WESTERN WYOMING TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

WIDESPREAD RAIN AND SNOW ACROSS CENTRAL AND SOUTHERN WYOMING WITH
SNOW LEVELS LOWERING TO BETWEEN 6500 AND 7500 FEET EARLY IN THE
MORNING. HIGHER ELEVATIONS OF INTERSTATE 80...MOUNTAIN PASSES AND
FOOTHILLS MAY SEE PERIODS OF WET SNOW...SLUSHY SLICK ROADS AND
LIMITED VISIBILITY...ESPECIALLY OVER SOUTH PASS IN THE WIND RIVER
MOUNTAINS...AND ON THE DUBOIS SIDE OF TOGWOTEE PASS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THURSDAY...ISOLATED TO SCATTERED THUNDERSTORMS FOR THE WEST AND NORTH
AND FAR SOUTH.

FRIDAY AND SATURDAY...ISOLATED AFTERNOON AND EVENING THUNDERSTORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT ANY HAIL AND SNOWFALL AMOUNTS.
THANK YOU.

$$

TEAM RIVERTON


Short Term Forecast


SHORT TERM FORECAST
NATIONAL WEATHER SERVICE SPOKANE WA
514 AM PDT SUN APR 26 2015

IDZ001-002-WAZ036-037-261515-
NORTHERN PANHANDLE-COEUR D`ALENE AREA-SPOKANE AREA-
NORTHEAST MOUNTAINS-
INCLUDING THE CITIES OF...SANDPOINT...RATHDRUM...BONNERS FERRY...
PRIEST RIVER...EASTPORT...COEUR D`ALENE...POST FALLS...HAYDEN...
WORLEY...SPOKANE...CHENEY...DAVENPORT...ROCKFORD...COLVILLE...
DEER PARK...CHEWELAH...NEWPORT...KETTLE FALLS
514 AM PDT SUN APR 26 2015

.NOW...
PATCHY FOG ALONG THE SPOKANE RIVER AND SOME OF THE NORTHERN
VALLEYS OF NORTHEAST WASHINGTON AND NORTH IDAHO MAY LINGER ON
THROUGH 10 AM THIS MORNING. DRIVERS SHOULD USE CAUTION AND BE
PREPARED FOR SUDDEN LOWERING OF VISIBILITIES ON AREA ROADWAYS
THIS MORNING.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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