Hazardous Weather Outlook
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
446 AM PDT FRI MAY 24 2013
ORZ041-044-049-050-502-503-505>507-WAZ024-026>030-520-521-251200-
EASTERN COLUMBIA RIVER GORGE OF OREGON-
LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-WALLOWA COUNTY-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-JOHN DAY BASIN-OCHOCO-
JOHN DAY HIGHLANDS-
FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON-
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY-
YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
NORTHWEST BLUE MOUNTAINS OF WASHINGTON-
EAST SLOPES OF THE WASHINGTON CASCADES-SIMCOE HIGHLANDS-
446 AM PDT FRI MAY 24 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
OREGON...NORTH CENTRAL OREGON...NORTHEAST OREGON...CENTRAL
WASHINGTON...SOUTH WASHINGTON...SOUTH CENTRAL WASHINGTON AND
SOUTHEAST WASHINGTON.
.DAY ONE...TODAY AND TONIGHT
THE ATMOSPHERE WILL BECOME UNSTABLE THIS AFTERNOON AND EARLY THIS
EVENING AS AN UPPER LOW PRESSURE SYSTEM LINGERS OVER THE AREA
THROUGH THE DAY. THIS WILL RESULT IN POSSIBLE AFTERNOON AND EARLY
EVENING THUNDERSTORMS. SOME OF THE STRONGER THUNDERSTORMS MAY
CONTAIN SMALL HAIL...GUSTY WINDS AND HEAVY RAIN.
IN ADDITION THERE WILL BE SNOW SHOWERS OVER CENTRAL OREGON...THE
NORTHERN BLUE MOUNTAINS AND IN WALLOWA COUNTY OREGON WHERE 1 TO 3
INCHES OF SNOW MAY ACCUMULATE ABOVE 4000 TO 4500 FEET THIS
MORNING. SNOW LEVELS WILL RISE TO 5000 TO 5500 FEET BY AFTERNOON.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
ANOTHER LOW PRESSURE SYSTEM WILL MOVE INTO THE REGION BY LATE
SATURDAY AND CONTINUE THROUGH AT LEAST MONDAY. THIS SYSTEM MAY
PRODUCE ISOLATED AFTERNOON AND EVENING THUNDERSTORMS AGAIN EACH
DAY SATURDAY THROUGH MONDAY OVER EASTERN AND SOUTHERN AREAS.
$$
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
500 AM MDT FRI MAY 24 2013
WYZ001>020-022>030-251100-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
500 AM MDT FRI MAY 24 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.
.DAY ONE...TODAY AND TONIGHT
VERY DRY SOUTHWEST FLOW COULD RAISE FIRE WEATHER CONCERNS THIS
AFTERNOON ACROSS SWEETWATER...SOUTHEAST FREMONT...AND NATRONA
COUNTIES AS WINDS INCREASE THIS AFTERNOON. SOME FAVORED AREAS
COULD EXPERIENCE GUSTS IN EXCESS OF 40 MPH AT TIMES.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
SUNDAY AND MEMORIAL DAY...ISOLATED TO SCATTERED AFTERNOON AND
EVENING THUNDERSTORMS ACROSS THE NORTH AND WEST. SOME STORMS
IN JOHNSON COUNTY AND THE BIGHORN BASIN COULD BE SEVERE.
TUESDAY THROUGH THURSDAY...ISOLATED TO SCATTERED AFTERNOON AND
EVENING THUNDERSTORMS.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.
$$
TEAM RIVERTON
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
340 AM MDT FRI MAY 24 2013
MTZ028>042-056>058-063>068-WYZ098-099-250945-
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-
340 AM MDT FRI MAY 24 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH
CENTRAL WYOMING.
.DAY ONE...TODAY AND TONIGHT
THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER TODAY AND
TONIGHT IS LOW.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
A CHANCE OF THUNDERSTORMS CAN BE EXPECTED SATURDAY THROUGH
MONDAY. THE BEST CHANCES OF THUNDERSTORMS WILL BE ACROSS EASTERN
MONTANA. SOME OF THESE THUNDERSTORMS MAY BE SEVERE WITH LARGE
HAIL...STRONG WINDS AND VERY HEAVY RAIN.
.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
$$
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
335 AM MDT FRI MAY 24 2013
IDZ017>025-031-032-251000-
EASTERN MAGIC VALLEY-SAWTOOTH MOUNTAINS-UPPER SNAKE HIGHLANDS-
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI-
335 AM MDT FRI MAY 24 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.
.DAY ONE...TODAY AND TONIGHT
A FEW SHOWERS AND STORMS ARE POSSIBLE ACROSS FAR WESTERN PORTIONS
OF THE CENTRAL MOUNTAINS THROUGH LATE AFTERNOON. TEMPERATURES WILL
FALL TO THE LOW/MID 30S ACROSS THE SNAKE PLAIN AND MAGIC VALLEY
THIS MORNING. THE FROST ADVISORY REMAINS IN EFFECT THROUGH 8AM.
THE POTENTIAL FOR A FROST OR FREEZE EXISTS AGAIN
TONIGHT...ALTHOUGH IT WILL BE 1-4 DEGREES WARMER. ANOTHER FROST
ADVISORY MIGHT BE NEEDED FOR THE SNAKE PLAIN AND MAGIC VALLEY.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
SHOWERS AND THUNDERSTORMS ARE FORECAST ALL THE WAY THROUGH MEMORIAL
DAY. THERE IS SOME UNCERTAINTY ON HOW QUICKLY THE SYSTEM WILL MOVE
THROUGH EASTERN IDAHO. IT COULD BE AS EARLY AS SUNDAY AFTERNOON OR
AS MUCH AS 24 HOURS LATER. ANY SHOWERS AND STORMS SATURDAY WILL
BE IN THE CENTRAL MOUNTAINS. SUNDAY AND/OR MONDAY WOULD BE THE
BEST CHANCE FOR EVERYONE. LIGHT SNOW IS STILL POSSIBLE ON THE
HIGHEST PEAKS OF THE CENTRAL MOUNTAINS.
ANOTHER SLOW MOVING SYSTEM FOR THE REST OF NEXT WEEK WILL KEEP A
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE FORECAST.
.SPOTTER INFORMATION STATEMENT...
WE ASK TRAINED SPOTTERS AND CITIZENS TO REPORT SIGNIFICANT
WEATHER CONDITIONS WHEN IT IS SAFE TO DO SO. THESE CONDITIONS MAY
INCLUDE HAIL...TORNADOES...STRONG WIND...DUST STORMS...SNOWFALL...
EXTREME COLD TEMPERATURES...FREEZING RAIN OR HEAVY RAIN...DENSE
FOG...AND FLOODING OR ICE JAMS. INFORMATION ABOUT THESE HAZARDOUS
CONDITIONS SHOULD BE CALLED INTO YOUR NATIONAL WEATHER SERVICE
OFFICE IN POCATELLO USING THE 1-800 SEVERE WEATHER HOTLINE...OR
208-233-0834.
$$
