Winter Storm Watch
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
217 PM MDT TUE MAY 21 2013
MTZ009-048-221100-
/O.NEW.KTFX.WS.A.0005.130523T0000Z-130523T1800Z/
NORTHERN ROCKY MOUNTAIN FRONT-SOUTHERN ROCKY MOUNTAIN FRONT-
217 PM MDT TUE MAY 21 2013
...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH
THURSDAY MORNING FOR ELEVATIONS ABOVE 6000 FEET...
THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A WINTER
STORM WATCH FOR ELEVATIONS ABOVE 6000 FEET...WHICH IS IN EFFECT
FROM WEDNESDAY EVENING THROUGH THURSDAY MORNING.
* TIMING AND MAIN IMPACT: RAIN AND SNOW WILL DEVELOP OVER THE
ROCKY MOUNTAIN FRONT ON WEDNESDAY. SNOW LEVELS WILL GRADUALLY
LOWER TO AROUND 6000 FEET BY WEDNESDAY EVENING. SNOW...HEAVY AT
TIMES WILL THEN BE POSSIBLE ABOVE 6000 FEET WEDNESDAY NIGHT
THROUGH THURSDAY MORNING.
* SNOW ACCUMULATIONS: TOTAL SNOW ACCUMULATIONS OF 5 TO 10 INCHES
ARE POSSIBLE. ISOLATED AMOUNTS NEAR 15 INCHES ARE POSSIBLE NEAR
RIDGE TOPS.
* VISIBILITY: VISIBILITIES COULD BE REDUCED TO LESS THAN ONE HALF
MILE AT TIMES.
* ELEVATIONS: FOR ELEVATIONS ABOVE 6000 FEET.
* OTHER IMPACTS: THIS WILL BE A WET AND HEAVY SNOWFALL. ANY SNOW
ACCUMULATIONS OVER 2 INCHES COULD CAUSE PROBLEMS ON POWER LINES
AND TREES THAT HAVE LEAFED OUT.
* LOCATIONS AFFECTED INCLUDE: MAINLY HIGHER ELEVATIONS OF THE
ROCKY MOUNTAIN FRONT...INCLUDING THE GLACIER PARK REGION.
* TO SEE A GRAPHICAL REPRESENTATION OF THIS HAZARD PLEASE VISIT.
WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=TFX
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.
&&
$$
Special Weather Statement
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
549 PM PDT TUE MAY 21 2013
MTZ001-220145-
KOOTENAI/CABINET REGION-
649 PM MDT TUE MAY 21 2013
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SANDERS AND SOUTHERN
LINCOLN COUNTIES UNTIL 745 PM MDT...
AT 642 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 24 MILES EAST OF NOXON...OR 25 MILES NORTH OF
THOMPSON FALLS...MOVING NORTHWEST AT 35 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...LIBBY AND HAPPYS INN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF THREATENING WEATHER APPROACHES YOUR AREA...GO INDOORS AND STAY
AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL
PROTECTED AREA.
&&
LAT...LON 4834 11580 4845 11576 4857 11530 4810 11507
4802 11517 4794 11547
TIME...MOT...LOC 0049Z 154DEG 32KT 4802 11531
$$
ZUMPFE
Hazardous Weather Outlook
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPOKANE WA
311 PM PDT TUE MAY 21 2013
IDZ001-004-WAZ037-221500-
NORTHERN PANHANDLE-CENTRAL PANHANDLE MOUNTAINS-
NORTHEAST MOUNTAINS-
311 PM PDT TUE MAY 21 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO AND
NORTHEAST WASHINGTON.
.DAY ONE...THIS AFTERNOON AND TONIGHT
THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG A STRONG COLD FRONT
THIS AFTERNOON AND EVENING. THERE IS POTENTIAL THAT A FEW STORMS
COULD PRODUCE BRIEF HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS
AROUND SANDPOINT...BONNERS FERRY...METALINE FALLS...AND CLARK
FORK.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
$$
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPOKANE WA
311 PM PDT TUE MAY 21 2013
IDZ027-WAZ031-038-042-221500-
LEWIS AND SOUTHERN NEZ PERCE COUNTIES-NORTHEAST BLUE MOUNTAINS-
OKANOGAN HIGHLANDS-EAST SLOPES NORTHERN CASCADES-
311 PM PDT TUE MAY 21 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
IDAHO...NORTH CENTRAL WASHINGTON AND SOUTHEAST WASHINGTON.
.DAY ONE...THIS AFTERNOON AND TONIGHT
SNOW LEVELS WILL RAPIDLY FALL TONIGHT INTO WEDNESDAY MORNING.
SNOW LEVELS WILL FALL AS LOW AS 2500 TO 3000 FEET. WHILE CONFIDENCE
IS LOW THAT LOCATIONS BELOW 4000 FEET WILL RECEIVE ANY
ACCUMULATING SNOW...IT IS ADVISED TO CHECK WITH WASHINGTON AND
IDAHO DEPARTMENT OF TRANSPORTATION FOR LATEST PASS CONDITIONS LATE
TONIGHT INTO WEDNESDAY MORNING.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
$$
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE GREAT FALLS MT
300 PM MDT TUE MAY 21 2013
MTZ009-048-221200-
NORTHERN ROCKY MOUNTAIN FRONT-SOUTHERN ROCKY MOUNTAIN FRONT-
300 PM MDT TUE MAY 21 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
MONTANA.
.DAY ONE...TODAY AND TONIGHT
THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER FOR TONIGHT IS LOW.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
A WINTER STORM WATCH IS IN EFFECT FROM WEDNESDAY NIGHT THROUGH
THURSDAY MORNING FOR ELEVATIONS ABOVE 6000 FEET.
A LOW PRESSURE WEATHER SYSTEM WILL MOVE OVER THE PACIFIC NORTHWEST
WEDNESDAY AND LINGER THROUGH THE WEEK. THIS WILL BRING PERIODS OF
LIGHT TO OCCASIONALLY MODERATE RAIN DURING THE LATTER HALF OF THE
WEEK. WITH SOME SIGNIFICANT RAIN AMOUNTS POSSIBLE AT LOWER
ELEVATIONS ALONG THE ROCKY MOUNTAIN FRONT...AND HEAVY SNOW POSSIBLE
IN THE MOUNTAINS...LOCAL RIVERS COULD SEE SOME QUICK RISES ALONG THE
SLOPES AND WEST OF INTERSTATE 15. AT THIS POINT...WIDESPREAD
FLOODING IS NOT EXPECTED. HOWEVER...LOCALLY HEAVY RAINS MAY CAUSE
UNEXPECTEDLY HEAVY RUNOFF AND CAUTION SHOULD BE USED.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
$$
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
226 PM MDT TUE MAY 21 2013
MTZ028>042-056>058-063>068-WYZ098-099-222030-
SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER-
FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS-
NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS-
CRAZY MOUNTAINS-NORTHEAST BIG HORN MOUNTAINS-SHERIDAN FOOTHILLS-
226 PM MDT TUE MAY 21 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH
CENTRAL WYOMING.
.DAY ONE...TONIGHT
THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER TONIGHT IS LOW.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS SOUTH CENTRAL
MONTANA WEDNESDAY EVENING AND THURSDAY AFTERNOON AND EVENING.
STRONG SOUTHEAST WINDS ARE POSSIBLE THURSDAY ACROSS SOUTHEAST
MONTANA...ESPECIALLY AROUND BAKER AND EKALAKA.
.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
$$
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
627 AM PDT TUE MAY 21 2013
ORZ049-050-502-503-505-506-WAZ030-221330-
GRANDE RONDE VALLEY-WALLOWA COUNTY-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-JOHN DAY BASIN-OCHOCO-
JOHN DAY HIGHLANDS-NORTHWEST BLUE MOUNTAINS OF WASHINGTON-
627 AM PDT TUE MAY 21 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
OREGON...NORTHEAST OREGON AND SOUTHEAST WASHINGTON.
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
OREGON...NORTH CENTRAL OREGON...NORTHEAST OREGON AND SOUTHEAST
WASHINGTON.
.DAY ONE...TODAY AND TONIGHT
A LARGE UPPER LEVEL LOW PRESSURE SYSTEM WILL DEVELOP RAPIDLY AND
APPROACH THE OREGON COAST THIS AFTERNOON. THE LOW WILL PUSH A COLD
FRONT THROUGH THE EASTERN SECTIONS OF OREGON AND SOUTHEAST
WASHINGTON TODAY. INSTABILITY EAST OF THE COLD FRONT WILL TRIGGER
ISOLATED THUNDERSTORMS THIS AFTERNOON AND THIS EVENING. ANY
THUNDERSTORMS THAT DO OCCUR ARE NOT EXPECTED TO BE STRONG OR
SEVERE.
SNOW LEVELS WILL LOWER TO PASS LEVELS, AROUND 2800-3500 FEET, BY
OVERNIGHT INTO WEDNESDAY MORNING IN CENTRAL AND NORTHEAST OREGON
AND IN THE BLUE MOUNTAINS IN SOUTHEAST WASHINGTON. SNOW
ACCUMULATIONS OF 2-3 INCHES ARE EXPECTED BY DAYBREAK WEDNESDAY IN
THE BLUE MOUNTAINS, THE WALLOWA MOUNTAINS, THE ELKHORN MOUNTAINS,
ALONG SUMMIT RIDGE IN EASTERN WALLOWA COUNTY, AND IN THE OCHOCO-
JOHN DAY HIGHLANDS. AN OFF-SEASON SNOW ADVISORY MAY BE NEEDED IN
SOME OF THESE AREAS FOR LATE TONIGHT THROUGH WEDNESDAY MORNING.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
THE AFOREMENTIONED UPPER LOW WILL PERSIST OVER THE PACIFIC
NORTHWEST THROUGH FRIDAY. AS SUCH THE LOW WILL KEEP LINGERING
UNSETTLED WEATHER ACROSS THE REGION WITH PERIODS OF RAIN SHOWERS
AT LOWER ELEVATIONS AND SNOW SHOWERS ABOVE 5000-5500 FEET THROUGH
FRIDAY IN THE MOUNTAINS OF NORTHEAST OREGON. THE LOW WILL BRING A
SLIGHT CHANCE OF THUNDERSTORMS IN THE OCHOCO-JOHN DAY HIGHLANDS
NORTHEASTWARD TO THE BLUE MOUNTAINS AND GRANT COUNTY EASTWARD INTO
IDAHO DURING IN THE AFTERNOON AND EVENING ON THURSDAY AND FRIDAY.
$$
POLAN
