weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Winter Storm Watch


URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
352 AM MDT FRI OCT 31 2014

IDZ006-009-010-MTZ002-006-007-043-312200-
/O.EXT.KMSO.WS.A.0007.141102T0000Z-141103T0000Z/
SOUTHERN CLEARWATER MOUNTAINS-WESTERN LEMHI COUNTY-
EASTERN LEMHI COUNTY-WEST GLACIER REGION-
BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION-
POTOMAC/SEELEY LAKE REGION-
352 AM MDT FRI OCT 31 2014

...WINTER STORM WATCH NOW IN EFFECT FROM SATURDAY EVENING THROUGH
SUNDAY AFTERNOON ABOVE 4500 FEET...

* IMPACTS/TIMING: ACCUMULATING SNOW WILL RESULT IN DIFFICULT
  TRAVEL OVER MOUNTAIN PASSES. HIGH ELEVATION VALLEYS IN
  SOUTHWEST MONTANA MAY ALSO RECEIVE ACCUMULATING SNOW IMPACTING
  TRAVEL. HUNTERS AND THOSE IN THE BACKCOUNTRY WILL EXPERIENCE RAW
  WINTER CONDITIONS. TIMING FOR THE MOST SIGNIFICANT SNOWFALL
  ACCUMULATIONS IS LATE SATURDAY THROUGH SUNDAY AFTERNOON.

* SNOW ACCUMULATIONS: 4-8 INCHES ABOVE 4500 FEET...LOCALLY MORE
  IN THE HIGHER TERRAIN.

* LOCATIONS IMPACTED INCLUDE...DIXIE...BANNOCK PASS...HIGHWAY 28
  TENDOY TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO
  GIBBONSVILLE...LEMHI PASS...MARIAS PASS...HIGHWAY 93 SULA TO
  LOST TRAIL PASS...LOLO PASS...BUTTE...GEORGETOWN LAKE...
  HIGHWAY 12 GARRISON TO ELLISTON...MACDONALD PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
325 AM MDT FRI OCT 31 2014

MTZ008>015-044>046-048>050-052>055-312130-
/O.CON.KTFX.WS.A.0009.141102T0000Z-141103T0600Z/
BEAVERHEAD-NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-
CASCADE-CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON-
TOOLE-LIBERTY-EASTERN PONDERA-SOUTHERN ROCKY MOUNTAIN FRONT-
EASTERN TETON-JUDITH BASIN-JEFFERSON-BROADWATER-MEAGHER-GALLATIN-
INCLUDING THE FOLLOWING LOCATIONS...BIG HOLE PASS...
CHIEF JOSEPH PASS...DILLON...MONIDA PASS...BROWNING...
MARIAS PASS...CUT BANK...HAVRE...GREAT FALLS...KINGS HILL PASS...
BIG SANDY...FORT BENTON...FLESHER PASS...HELENA...LINCOLN...
MACDONALD PASS...ROGERS PASS...ENNIS...NORRIS HILL...
RAYNOLDS PASS...TWIN BRIDGES...SHELBY...CHESTER...CONRAD...
CHOTEAU...FAIRFIELD...STANFORD...BOULDER...BOULDER HILL...
ELK PARK PASS...HOMESTAKE PASS...WHITEHALL...TOWNSEND...
WHITE SULPHUR SPRINGS...BATTLE RIDGE PASS...BOZEMAN...
BOZEMAN PASS...TARGHEE PASS...WEST YELLOWSTONE
325 AM MDT FRI OCT 31 2014

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY EVENING...

A WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY EVENING.

* TIMING AND MAIN IMPACT: A STRONG FALL STORM SYSTEM WILL AFFECT
  MUCH OF NORTH-CENTRAL AND SOUTHWEST MONTANA WITH PERIODS OF
  RAIN AND SNOW...HEAVY AT TIMES...SATURDAY EVENING THROUGH
  SUNDAY EVENING. RAIN FALLING AT LOWER ELEVATIONS SATURDAY
  NIGHT IS LIKELY TO CHANGE TO SNOW AT ALL ELEVATIONS EARLY
  SUNDAY MORNING. THE TIMING OF THIS CHANGE FROM RAIN TO SNOW
  WILL DETERMINE LOWER ELEVATION SNOW ACCUMULATION.

* SNOW ACCUMULATIONS: MOUNTAIN AREAS ABOVE 5500 FEET HAVE THE
  POTENTIAL FOR 5 TO 10 INCHES OF STORM TOTAL SNOWFALL...WITH
  ISOLATED AMOUNTS OVER ONE FOOT. LOCATIONS BELOW 5500 FEET
  COULD HAVE 1 TO 4 INCHES OF SNOW...DEPENDING ON THE TIMING
  AT WHICH RAIN CHANGES TO SNOW. SNOWFALL AMOUNTS GREATER THAN
  4 INCHES COULD OCCUR OVER PORTIONS OF THE NORTH-CENTRAL
  PLAINS IF RAIN CHANGES TO SNOW EARLIER SATURDAY NIGHT.

* WINDS AND VISIBILITY: NORTH WINDS OF 10 TO 20 MPH ARE
  POSSIBLE AT LOWER ELEVATIONS...WHILE 20 TO 30 MPH WINDS ARE
  POSSIBLE IN THE MOUNTAINS. HEAVY WET SNOW COULD REDUCE
  VISIBILITY TO LESS THAN ONE-HALF MILE AT TIMES.

* OTHER IMPACTS: TRAVEL MAY BECOME DIFFICULT WHILE SNOW
  ACCUMULATES OVER AREA PASSES. BRIDGES MAY BECOME SNOW
  COVERED AND ICY AT ALL ELEVATIONS. HEAVY WET SNOW COULD
  CAUSE ISOLATED POWER OUTAGES. YOUNG LIVESTOCK MAY BE AT RISK
  OF EXPOSURE TO HYPOTHERMIA.

* LOCATIONS AFFECTED INCLUDE: FAIRFIELD...CHOTEAU...CHESTER...
  WHITE SULPHUR SPRINGS...BATTLE RIDGE PASS...BOZEMAN...
  BOZEMAN PASS...TARGHEE PASS...WEST YELLOWSTONE...STANFORD...
  CONRAD...BOULDER...BOULDER HILL...ELK PARK PASS... HOMESTAKE
  PASS...WHITEHALL...SHELBY...BIG SANDY... FORT BENTON...
  BROWNING...MARIAS PASS...HAVRE...CUT BANK... TOWNSEND...
  GREAT FALLS...KINGS HILL PASS...BIG HOLE PASS... CHIEF
  JOSEPH PASS...DILLON...MONIDA PASS...FLESHER PASS...
  HELENA...LINCOLN...MACDONALD PASS...ROGERS PASS...ENNIS...
  NORRIS HILL...RAYNOLDS PASS...TWIN BRIDGES

* 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 STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

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
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE