Special Weather Statement
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
321 PM MDT SAT AUG 29 2009
WYZ002-007-292200-
ABSAROKA MOUNTAINS-OWL CREEK AND BRIDGER MOUNTAINS-
321 PM MDT SAT AUG 29 2009
...SIGNIFICANT WEATHER ADVISORY FOR FREMONT...HOT SPRINGS AND PARK
COUNTIES UNTIL 400 PM MDT...
AT 319 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 7 MILES NORTHWEST OF WASHAKIE NEEDLES...OR 27
MILES NORTHEAST OF DUBOIS...MOVING SOUTHEAST AT 15 MPH.
ONE HALF INCH DIAMETER HAIL...AND WINDS AROUND 40 MPH ARE POSSIBLE
WITH THIS STORM.
THIS STORM WILL BE...
NEAR WASHAKIE NEEDLES BY 345 PM MDT.
IF OUT HIKING IN THESE AREAS...SEEK SHELTER AT THE FIRST SIGN OF
APPROACHING BAD WEATHER.
REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.
LAT...LON 4381 10888 4359 10904 4384 10940 4395 10933
TIME...MOT...LOC 2120Z 298DEG 11KT 4382 10927
$$
LIPSON
Hazardous Weather Outlook
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MISSOULA MT
246 PM MDT SAT AUG 29 2009
IDZ009-010-MTZ006-007-043-301200-
WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-
BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION-
POTOMAC/SEELEY LAKE REGION-
246 PM MDT SAT AUG 29 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
IDAHO AND WEST CENTRAL MONTANA.
.DAYS ONE AND TWO...TONIGHT AND SUNDAY
A LOW PRESSURE SYSTEM WILL LIKELY BRING NUMEROUS SHOWERS AND A
CHANCE FOR THUNDERSTORMS IN LEMHI COUNTY IN IDAHO AND THROUGH
SOUTHWEST MONTANA OVERNIGHT SATURDAY AND AGAIN SUNDAY AFTERNOON.
THE MAIN THREAT WILL OCCUR SUNDAY AFTERNOON AND EVENING IN THESE
AREAS...WHERE SOME THUNDERSTORMS HAVE THE POTENTIAL TO BE STRONG
AND PRODUCE SMALL HAIL AND GUSTY WINDS.
.DAYS THREE THROUGH SEVEN...MONDAY THROUGH FRIDAY
THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.
.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
$$
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
830 AM PDT SAT AUG 29 2009
UPDATED TODAY DISCUSSION
ORZ041>044-049-050-501>506-WAZ024-026>030-501-502-301215-
EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON-
CENTRAL OREGON-LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-
WALLOWA COUNTY-FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-
NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES-JOHN DAY BASIN-
OCHOCO-JOHN DAY HIGHLANDS-
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-
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON-
EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON-
530 AM PDT SAT AUG 29 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.
.DAY ONE...TODAY AND TONIGHT
THUNDERSTORMS
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, EAST SLOPES
OF THE SOUTHERN CASCADES OF WASHINGTON, 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, EASTERN COLUMBIA
RIVER GORGE OF OREGON, NORTH CENTRAL OREGON, LOWER COLUMBIA
BASIN OF OREGON, GRANDE RONDE VALLEY, WALLOWA COUNTY,
FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON, NORTHERN BLUE
MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON,
NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES, JOHN DAY
BASIN, OCHOCO-JOHN DAY HIGHLANDS
A STRONG PACIFIC WEATHER SYSTEM WILL MOVE INTO HE PACIFIC NORTHWEST
TODAY. THE INITIAL COLD FRONT WITH THIS SYSTEM IS CURRENTLY MOVING
ACROSS NORTHEAST OREGON AND SOUTHEAST WASHINGTON AND IS PUSHING INTO
WARMER AND UNSTABLE AIR AHEAD OF THE SYSTEM. THIS IS RESULTING IN
ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS THIS MORNING. THE
COLD FRONT AND ASSOCIATED THUNDERSTORMS WILL MOVE OUT OF THE AREA BY
LATE THIS MORNING. THERE WILL BE A BREAK WITH SOME SURFACE SOLAR
HEATING TAKING PLACE LATE THIS MORNING THROUGH EARLY THIS AFTERNOON.
THIS WILL SET THE STAGE FOR ADDITIONAL SHOWERS AND AFTERNOON/EVENING
THUNDERSTORMS...AS A SOUTHERLY FLOW AHEAD OF THE LOW PRESSURE SYSTEM
BRINGS MORE INSTABILITY AND MOISTURE INTO THE AREA. THUNDERSTORMS
WILL LIKELY PERSIST THROUGH THIS EVENING.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
THUNDERSTORMS SUNDAY
NORTHWEST BLUE MOUNTAINS, GRANDE RONDE VALLEY, WALLOWA COUNTY,
NORTHERN BLUE MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF
OREGON, JOHN DAY BASIN, OCHOCO-JOHN DAY HIGHLANDS
SURFACE HEATING COMBINED WITH AFTERNOON INSTABILITY AND MOISTURE
WILL ONCE AGAIN BRING A THREAT OF ISOLATED TO SCATTERED
THUNDERSTORMS TO THE NORTHEAST OREGON AND SOUTHEAST WASHINGTON
MOUNTAINS ON SUNDAY. BY SUNDAY NIGHT THE WEATHER SYSTEM MOVING INTO
THE REGION TODAY WILL MOVE TO THE EAST AND THEN SLOW DOWN. MOISTURE
WILL WRAP AROUND THE BACK SIDE OF THE LOW PRESSURE SYSTEM BRINGING A
POSSIBILITY OF MORE STEADY STRATIFORM PRECIPITATION SUNDAY NIGHT
INTO MONDAY. DRIER AND MORE STABLE CONDITIONS WILL THEN ARRIVE ON
TUESDAY.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUIRED FOR THUNDERSTORMS TODAY AND
TOMORROW.
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
GRAPHICAL FORECASTS OF WEATHER HAZARDS OUT TO SEVEN DAYS
ARE DISPLAYED ON THE WORLD WIDE WEB AT:
WWW.WRH.NOAA.GOV/PDT/CURRENTHAZARDS/HWO.HTML
ALL LETTERS IN THE ABOVE URL ARE LOWER CASE...EXCEPT THE H IN
CURRENTHAZARDS.
$$
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREAT FALLS MT
608 AM MDT SAT AUG 29 2009
MTZ008-015-052-053-055-301300-
BEAVERHEAD-MADISON-JEFFERSON-BROADWATER-GALLATIN-
608 AM MDT SAT AUG 29 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
MONTANA.
.DAY ONE...TODAY AND TONIGHT
THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER THROUGH TONIGHT
IS LOW.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
AN UPPER LEVEL AREA OF LOW PRESSURE WILL LIKELY BRING NUMEROUS
SHOWERS WITH A CHANCE OF THUNDERSTORMS TO SOUTHWEST MONTANA
SUNDAY AND SUNDAY NIGHT. THE MAIN THREAT WILL LIKELY BE HEAVY
RAINFALL AT TIMES...WHICH MAY CAUSE PONDING OF WATER OR POSSIBLY
LOCALIZED MINOR FLOODING IN SPOTS. THUNDERSTORMS MAY ALSO PRODUCE
GUSTY WINDS AND SMALL HAIL SUNDAY AFTERNOON AND EVENING. THIS
SHOWER AND THUNDERSTORM ACTIVITY WILL DECREASE MONDAY INTO MONDAY
NIGHT.
LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATEST
UPDATES ON THIS SITUATION.
.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
$$
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
505 AM MDT SAT AUG 29 2009
WYZ001>020-022>030-301105-
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-
505 AM MDT SAT AUG 29 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.
.DAY ONE...TODAY AND TONIGHT
ISOLATED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING ACROSS
WESTERN WYOMING. STRONGER THUNDERSTORMS WILL BE CAPABLE OF
PRODUCING WIND GUSTS TO 50 MPH.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED SUNDAY AND MONDAY
OVER THE ENTIRE REGION. STRONG TO POSSIBLY SEVERE STORMS ARE POSSIBLE
SUNDAY AND MONDAY DURING THE AFTERNOON AND EVENING...MAINLY
ACROSS NORTHERN WYOMING. HAIL...STRONG WINDS...AND DEADLY CLOUD TO
GROUND LIGHTNING WILL BE THE PRIMARY HAZARDS.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.
$$
TEAM RIVERTON
