High Wind Watch 8, NWS Riverton, WY

666 
WWUS75 KRIW 280740
NPWRIW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
1240 AM MST SUN FEB 28 2016

...STRONG WIND IN THE CODY FOOTHILLS TONIGHT...

.STRONG DOWNSLOPE WEST WINDS WILL DEVELOP TONIGHT AHEAD OF AN
APPROACHING COLD FRONT. WINDS WILL DIMINISH WITH THE COLD FRONTAL
PASSAGE MONDAY MORNING.

WYZ003-282300-
/O.UPG.KRIW.HW.A.0008.160229T0000Z-160229T1200Z/
/O.NEW.KRIW.HW.W.0013.160229T0000Z-160229T1200Z/
CODY FOOTHILLS-
INCLUDING THE CITIES OF...CODY...MEETEETSE
1240 AM MST SUN FEB 28 2016

...HIGH WIND WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM
MST MONDAY...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM MST
MONDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. 

* TIMING...WEST WINDS WILL INCREASE EARLY THIS EVENING WITH STRONG
  WIND GUSTS POSSIBLE OVERNIGHT. WINDS WILL DIMINISH WITH A COLD
  FRONTAL PASSAGE MONDAY MORNING.

* WINDS...WEST TO SOUTHWEST WIND INCREASING TO 35 TO 45 MPH WITH
  GUSTS 60 TO 65 MPH.

* IMPACTS...TRAVELERS ON HIGHWAY 120 IN PARK COUNTY SHOULD BE
  PREPARED FOR POSSIBLE STRONG WINDS TONIGHT. THOSE ATTEMPTING TO
  PULL TRAILERS OR IN HIGH PROFILE VEHICLES WILL BE ESPECIALLY AT
  RISK FOR LOSS OF VEHICLE CONTROL OR A BLOWOVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS
OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE.

&&

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RIVERTON WY
204 PM MST SAT FEB 27 2016

.SHORT TERM...TONIGHT THROUGH SUNDAY

FAST MOVING SHORT WAVE TROUGH AND COLD FRONT IN EASTERN IDAHO
WILL SWEEP EAST THIS EVENING PRODUCING SNOW IN THE WESTERN AND
NORTHERN MOUNTAINS WITH A SOME RAIN SHOWERS IN THE LOWER
ELEVATIONS OF THE NORTH. MAY SEE SOME LIGHTNING IN THE NORTH AS
WELL. STRONG WINDS WILL BLOW THIS EVENING WITH HIGH WIND WARNINGS
FOR CODY FOOTHILLS...NATRONA COUNTY AND GREEN AND RATTLESNAKE
MOUNTAINS UNTIL MIDNIGHT THEN WIND DIMINISHING. COLDER AIR WILL
COME IN MIDNIGHT TO SUNRISE WITH PARTIAL CLEARING. FLOW ALOFT
WILL STAY WESTERLY SUNDAY WITH SOME LINGERING SNOW SHOWERS IN THE
WESTERN MOUNTAINS. BREEZY TO WINDY ARES EXPECTED BUT NOT A STRONG
AS THIS EVENING. HIGHS SHOULD BY 4 TO 7 DEGREES COOLER SUNDAY.

.LONG TERM...SUNDAY NIGHT THROUGH SATURDAY

A PACIFIC DISTURBANCE WILL BRING A RETURN OF PRECIPITATION ACROSS
THE WESTERN MOUNTAINS SUNDAY NIGHT. ADDITIONAL TO THE PRECIPITATION
WILL BE THE OPPORTUNITY FOR POTENTIALLY STRONG WIND OVER THE
ABSAROKA MOUNTAINS AND INTO THE CODY FOOTHILLS. WIND IS ANTICIPATED
TO WEAKEN BY MONDAY MORNING AS A THE TROUGH AXIS MOVES THROUGH THE
AREA. AS THE TROUGH AXIS CONTINUES EASTWARD...PRECIPITATION WILL BE
FOUND ALONG WITH A DIP IN DAYTIME TEMPERATURES. THESE CONDITIONS
WILL BE FOUND EAST OF THE DIVIDE BY MONDAY AFTERNOON...WITH ACTIVITY
ENDING QUICKLY MONDAY EVENING. TO ACCOMPANY THE PRECIPITATION...
STRONGER WIND MAY DEVELOP OVER THE WIND CORRIDOR MONDAY
AFTERNOON...AND WEAKEN DURING THE LATE EVENING HOURS.

A RIDGING PATTERN WILL DEVELOP IN THE WAKE OF THE WAVE...AND ITS
PRESENCE WILL REMAIN THROUGH LATE TUESDAY NIGHT. HOWEVER...THIS DOES
NOT MEAN THAT DRY CONDITIONS WILL BE FOUND. A PUSH OF MOISTURE WILL
RIDE ALONG THE RIDGE TO BRING SOME ACTIVITY ACROSS THE WESTERN
MOUNTAINS AND VALLEYS TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING. A
STRONGER WAVE WILL BE ON THE HEELS OF THIS MOISTURE PUSH...WITH MORE
WIDESPREAD COVERAGE ACTIVITY ANTICIPATED BY WEDNESDAY MORNING. THE
WAVE LOOKS TO POTENTIALLY HAVE A BIT MORE PUNCH THAN THE PREVIOUS
WAVE...WITH ACTIVITY AGAIN EXPECTED TO SPREAD EAST OF THE DIVIDE ON
THURSDAY. THIS FORECAST PACKAGE SEES A BIT OF AN INCREASE IN
PRECIPITATION COVERAGE WITH A SIMILAR PROGRESSION SEEN ON MOST
NUMERICAL MODELS.

AGAIN...THE EXIT OF THIS SYSTEM WILL PERMIT A RIDGE TO MOVE OVER THE
AREA. THE AXIS OF THE RIDGE WILL MOVE INTO WESTERN WYOMING ON
THURSDAY AFTERNOON...AND MODELS DEMONSTRATE THE RIDGE POTENTIALLY
FLATTENING THROUGH THURSDAY EVENING. THIS WEST TO SOUTHWEST
DEVELOPING FLOW WILL TAP INTO ANOTHER MOISTURE SOURCE WITH SOME
SHOWERS ANTICIPATED OVER WESTERN WYOMING. HOWEVER...THIS WILL BE A
QUICK PUSH OF MOISTURE...WITH MOST ACTIVITY ENDING BY FRIDAY
AFTERNOON. MODELS IN FAIR AGREEMENT WITH THE ADVANCEMENT OF A STREAM
OF MOISTURE OFF THE PACIFIC COAST ON FRIDAY AFTERNOON...WITH ONLY
LIGHT PRECIPITATION ANTICIPATED OVER THE WESTERN MOUNTAINS...WHICH
WILL TAPER OFF BY LATE FRIDAY NIGHT. THE VERY SLOW MOVEMENT OF THE
WIDE RIDGE WILL KEEP MOISTURE GENERALLY OUT OF THE AREA THROUGH
SATURDAY EVENING.

&&

.AVIATION.../00Z ISSUANCE/

WEST OF THE CONTINENTAL DIVIDE...KJAC...KBPI...KPNA...KRKS.

A FAST MOVING LOW PRESSURE TROUGH AND COLD FRONT WILL BRING
WIDE SPREAD MVFR TO IFR CEILINGS AND VISIBILITY REDUCED IN SNOW
AND FOG TO THE WESTERN MOUNTAINS AND VALLEYS TONIGHT...IMPACTING
KJAC...KAFO...KBPI AND KPNA MAINLY. WIDE SPREAD MOUNTAIN
OBSCURATIONS EXPECTED THROUGH 12Z. MVFR CEILINGS COULD REACH AS
FAR EAST AS KRKS. ISOLATED THUNDERSTORMS EXPECTED FROM
KJAC...NORTH UNTIL 03Z. STRONG MOUNTAIN TOP WINDS WILL CAUSE AREAS
OF BLOWING SNOW AND LOW LEVEL WIND SHEAR. BY 12Z PARTIAL CLEARING
IS EXPECTED BUT SNOW SHOWERS EXPECTED TO LINGER OVER THE WESTERN
MOUNTAINS WITH LOCAL MVFR TO IFR CEILINGS MAINLY ABOVE 9000 FEET.
WINDS WILL DECREASE THROUGH SUNDAY.

EAST OF THE CONTINENTAL DIVIDE...KCOD...KCPR...KLND...KRIW...KWRL.

ALONG AND EAST OF THE CONTINENTAL DIVIDE WIDE SPREAD MVFR TO IFR
CEILINGS AND VISIBILITY REDUCED IN SNOW AND FOG WITH WIDE SPREAD
MOUNTAIN OBSCURATIONS EXPECTED THROUGH 12Z...MAINLY ABOVE 8500
FEET. SCATTERED RAIN SHOWERS...MIXED WITH SNOW EXPECTED IN THE
LOWER ELEVATIONS OF THE NORTH WITH ISOLATED THUNDERSTORMS UNTIL
03Z.  EXPECT VFR CONDITIONS AT THE AIRPORTS. MOUNTAIN SHOWERS
WILL DECREASE SIGNIFICANTLY AFTER 12Z. STRONG WINDS OVER AND NEAR
THE EAST SLOPES OF THE MOUNTAINS WILL PRODUCE AREAS OF LOW LEVEL
WIND SHEAR. WINDS WILL DECREASE THROUGH SUNDAY.

&&

.FIRE WEATHER...

FAST MOVING SHORT WAVE TROUGH AND COLD FRONT IN EASTERN IDAHO
WILL SWEEP EAST THIS EVENING PRODUCING SNOW IN THE WESTERN AND
NORTHERN MOUNTAINS WITH A SOME RAIN SHOWERS IN THE LOWER
ELEVATIONS OF THE NORTH. MAY SEE SOME LIGHTNING IN THE NORTH AS
WELL. STRONG WINDS WILL BLOW THIS EVENING WITH HIGH WIND WARNINGS
FOR CODY FOOTHILLS...NATRONA COUNTY AND GREEN AND RATTLESNAKE
MOUNTAINS UNTIL MIDNIGHT THEN WIND DIMINISHING. COLDER AIR WILL
COME IN MIDNIGHT TO SUNRISE WITH PARTIAL CLEARING. FLOW ALOFT
WILL STAY WESTERLY SUNDAY WITH SOME LINGERING SNOW SHOWERS IN THE
WESTERN MOUNTAINS. BREEZY TO WINDY ARES EXPECTED BUT NOT A STRONG
AS THIS EVENING. HIGHS SHOULD BY 4 TO 7 DEGREES COOLER SUNDAY.
RELATIVE HUMIDITY WILL BE FAVORABLE TO ELEVATED. MIXING HEIGHTS
WILL BE LOW WITH THE FRONTAL INVERSION OVER THE AREA. SMOKE
DISPERSAL EXPECTED TO BE POOR.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
HIGH WIND WARNING UNTIL MIDNIGHT MST TONIGHT FOR WYZ003-019-020.

&&

SHORT TERM...C.BAKER
LONG TERM...BRANHAM
AVIATION...C.BAKER
FIRE WEATHER...C.BAKER

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
330 AM MST SAT FEB 27 2016

WYZ001>020-022>030-281200-
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-CODY FOOTHILLS-
NORTH BIG HORN BASIN-SOUTHWEST BIG HORN BASIN-
SOUTHEAST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS-
BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST-
NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY-
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE-
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-STAR VALLEY-
SALT RIVER AND WYOMING RANGES-UPPER GREEN RIVER BASIN FOOTHILLS-
UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY-
ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY-
330 AM MST SAT FEB 27 2016

...HIGH WIND WARNING FOR PORTIONS OF CENTRAL WYOMING FROM 11 AM
THIS MORNING UNTIL MIDNIGHT TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

AN APPROACHING UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT
WILL BRING STRONG WIND TO THE AREA BETWEEN SOUTH PASS AND CASPER.
GUSTY WINDS WILL ALSO OCCUR ACROSS MUCH OF THE REST OF THE AREA
EAST OF THE DIVIDE THIS AFTERNOON AND EVENING. ADDITIONALLY...EXPECT
MOUNTAIN AND VALLEY SNOW...MIXED WITH RAIN AT TIMES...ACROSS
WESTERN WYOMING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

MONDAY AND MONDAY NIGHT...A CHANCE OF MOUNTAIN SNOW. A CHANCE OF
RAIN OR SNOW AT THE LOWER ELEVATIONS.

TUESDAY NIGHT AND WEDNESDAY...A CHANCE OF MOUNTAIN SNOW. A CHANCE
OF RAIN OR SNOW AT THE LOWER ELEVATIONS ON WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT WIND GUSTS GREATER THAN 50 MPH
AND SNOWFALL. THANK YOU.