Winter Storm Warning 7, NWS Riverton, WY

000 
WWUS45 KRIW 060125
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
725 PM MDT FRI OCT 5 2007

...MAJOR WINTER STORM TO IMPACT THE MOUNTAINS AND FOOTHILLS OF
WESTERN WYOMING LATE FRIDAY INTO SATURDAY...

.A DEVELOPING STORM SYSTEM OVER THE WESTERN UNITED STATES WILL
MOVE INTO WESTERN WYOMING LATE TONIGHT AND MOVE SLOWLY ACROSS THE
AREA THROUGH SATURDAY NIGHT. SNOW LEVELS WILL GRADUALLY LOWER
THROUGHOUT THE EVENT. SNOW WILL DEVELOP ACROSS THE SOUTHWEST
MOUNTAINS THIS EVENING. SNOW LEVELS WILL VARY FROM 9000 TO 10000
FEET EARLY THIS EVENING...BUT LOWER TO THE VALLEY FLOORS BY SATURDAY
IN MOST AREAS. SNOWFALL AMOUNTS WILL LIKELY VARY FROM 6 TO 12
INCHES IN THE MOUNTAINS WITH HIGHER AMOUNTS ABOVE 9000 FEET. SOME
WESTERN VALLEYS AND FOOTHILLS LOCATIONS WILL RECEIVE 3 TO 6
INCHES.

WYZ024-060930-
/O.CON.KRIW.WS.W.0007.000000T0000Z-071007T0000Z/
SALT RIVER AND WYOMING RANGES-
725 PM MDT FRI OCT 5 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

SNOW IS EXPECTED TO DEVELOP OVER THE SALT RIVER AND WYOMING
RANGES TONIGHT AND CONTINUE THROUGH SATURDAY. SNOW LEVELS WILL
START AROUND 9000 FEET THIS EVENING BUT LOWER TO AROUND 6500 FEET
BY SATURDAY MORNING. SNOWFALL AMOUNTS OF 12 TO 15 INCHES ARE
POSSIBLE WITH HIGHER AMOUNTS ABOVE 9000 FEET.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

WYZ012-060930-
/O.CON.KRIW.WS.W.0007.000000T0000Z-071007T0000Z/
TETON AND GROS VENTRE MOUNTAINS-
725 PM MDT FRI OCT 5 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

SNOW IS EXPECTED TO DEVELOP OVER THE TETON AND GROS VENTRE
MOUNTAINS THIS EVENING AND CONTINUE THROUGH SATURDAY. SNOW LEVELS
WILL START AROUND 9000 FEET THIS EVENING BUT LOWER TO AROUND 6500
FEET BY SATURDAY MORNING. SNOWFALL AMOUNTS OF 12 TO 15 INCHES ARE
POSSIBLE WITH HIGHER AMOUNTS ABOVE 9000 FEET. THE SOUTHERN
PORTION OF THE GROS VENTRE MOUNTAINS ARE PARTICULARLY SUSCEPTIBLE
WITH THIS STORM.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

WYZ014-015-060930-
/O.CON.KRIW.WS.W.0007.000000T0000Z-071007T0000Z/
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
725 PM MDT FRI OCT 5 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

TRAVELERS WILL LIKELY EXPERIENCE SNOW OVER TOGWOTEE PASS DURING
THIS EVENING...WHILE RAIN IS EXPECTED OVER SOUTH PASS. RAIN WILL
LIKELY CHANGE OVER TO SNOW OVER SOUTH PASS BEFORE MIDNIGHT. SNOWFALL
AMOUNTS OF 12 TO 15 INCHES ARE EXPECTED BY SATURDAY AFTERNOON
AROUND TOGWOTEE PASS WITH AROUND 12 INCHES OVER SOUTH PASS. THE
HIGHER SOUTHWEST FACING SLOPES ABOVE 9000 TO 10000 FEET MAY SEE
HIGHER AMOUNTS BY SATURDAY AFTERNOON.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

WYZ001-060930-
/O.EXT.KRIW.WW.Y.0001.000000T0000Z-071007T0000Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
725 PM MDT FRI OCT 5 2007

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM MDT SATURDAY...

SNOW IS EXPECTED TO DEVELOP OVER YELLOWSTONE NATIONAL PARK AROUND
MIDNIGHT AND CONTINUE THROUGH SATURDAY. SNOW LEVELS WILL START
AROUND 9000 FEET AND THEN LOWER TO AROUND 6500 FEET BY SATURDAY
MORNING. SNOWFALL AMOUNTS OF 4 TO 8 INCHES ARE POSSIBLE WITH
HIGHER AMOUNTS OF 8 TO 12 INCHES ABOVE 9000 FEET.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

WYZ025-060930-
/O.EXT.KRIW.WW.Y.0001.000000T0000Z-071007T0000Z/
UPPER GREEN RIVER BASIN FOOTHILLS-
INCLUDING THE CITY OF...PINEDALE
725 PM MDT FRI OCT 5 2007

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 3 AM TO 6 PM MDT
SATURDAY...

SNOW IS EXPECTED TO DEVELOP OVER THE NORTHERN GREEN RIVER BASIN
FROM BOULDER AND PINEDALE...TO CORA AND BONDURANT AFTER MIDNIGHT
AND CONTINUE INTO SATURDAY. RAIN SHOWERS THIS EVENING...WILL
CHANGE OVER TO SNOW AFTER MIDNIGHT AND CONTINUE THROUGH THE DAY
ON SATURDAY. SNOWFALL AMOUNTS OF 3 TO 6 INCHES ARE EXPECTED WITH THIS
STORM.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

WYZ013-060930-
/O.EXT.KRIW.WW.Y.0001.000000T0000Z-071007T0000Z/
JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
725 PM MDT FRI OCT 5 2007

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 3 AM TO 6 PM MDT
SATURDAY...

SNOW IS EXPECTED TO DEVELOP OVER JACKSON HOLE AFTER MIDNIGHT AND
CONTINUE INTO SATURDAY. RAIN SHOWERS THIS EVENING...WILL CHANGE
OVER TO SNOW AFTER MIDNIGHT AND CONTINUE THROUGH THE DAY ON SATURDAY.
AREAS AROUND JACKSON AND WILSON ARE ONLY EXPECTED TO RECEIVE 2 TO
4 INCHES...WHILE LOCATIONS IN THE NORTHERN PART OF JACKSON...FROM
MOOSE TO MORAN JUNCTION...MAY EXPECT TO RECEIVE 3 TO 6 INCHES BY
LATE SATURDAY AFTERNOON.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

WYZ027-060930-
/O.EXT.KRIW.WW.Y.0001.000000T0000Z-071007T0000Z/
SOUTH LINCOLN COUNTY-
INCLUDING THE CITIES OF...KEMMERER...COKEVILLE
725 PM MDT FRI OCT 5 2007

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 3 AM TO 6 PM MDT
SATURDAY...

SNOW IS EXPECTED TO DEVELOP OVER SOUTHERN LINCOLN COUNTY AFTER
MIDNIGHT AND CONTINUE INTO SATURDAY. RAIN SHOWERS THIS
EVENING...WILL CHANGE OVER TO SNOW AFTER MIDNIGHT...AND CONTINUE INTO
SATURDAY...BEFORE TAPERING OFF BY LATE SATURDAY AFTERNOON.
LOCATIONS FROM COKEVILLE...TO SAGE...AND KEMMERER CAN EXPECT TO
RECEIVE 3 TO 6 INCHES OF SNOW BY SATURDAY AFTERNOON.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

WYZ002-060930-
/O.CON.KRIW.WW.Y.0001.000000T0000Z-071007T0000Z/
ABSAROKA MOUNTAINS-
725 PM MDT FRI OCT 5 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

SNOW IS EXPECTED TO DEVELOP OVER THE ABSAROKA MOUNTAINS THIS
EVENING AND CONTINUE THROUGH SATURDAY. SNOW LEVELS WILL START
BETWEEN 9000 FEET THIS EVENING AND THEN LOWER TO AROUND 6500 FEET BY
SATURDAY MORNING. SNOWFALL AMOUNTS OF 6 TO 12 INCHES ARE POSSIBLE
WITH HIGHER AMOUNTS OVER A FOOT ABOVE 9000 FEET. THESE HIGHER
AMOUNTS ARE EXPECTED IN THE SOUTHERN PORTION OF THE ABSAROKAS
NORTH OF DUBOIS...WHILE 4 TO 8 INCHES IS EXPECTED IN THE CENTRAL
AND NORTHERN PORTIONS OF THE MOUNTAINS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

LIPSON/SMITH

000 
WWUS45 KRIW 060942
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
342 AM MDT SAT OCT 6 2007

...MAJOR WINTER STORM TO IMPACT THE MOUNTAINS AND FOOTHILLS OF
WESTERN WYOMING LATE FRIDAY INTO SATURDAY...

.A DEVELOPING STORM SYSTEM OVER THE WESTERN UNITED STATES WILL
MOVE INTO WESTERN WYOMING TODAY AND MOVE EAST OF THE AREA TONIGHT.
SNOW LEVELS WILL GRADUALLY LOWER THROUGHOUT THE EVENT. SNOW LEVELS
WILL LOWER TO THE VALLEY FLOORS TODAY WEST OF THE CONTINENTAL
DIVIDE. SNOWFALL AMOUNTS WILL LIKELY VARY FROM 6 TO 12 INCHES IN
THE MOUNTAINS WITH HIGHER AMOUNTS ABOVE 9000 FEET. SOME WESTERN
VALLEYS AND FOOTHILLS LOCATIONS WILL RECEIVE 2 TO 5 INCHES.

WYZ024-061745-
/O.EXT.KRIW.WS.W.0007.000000T0000Z-071006T2100Z/
SALT RIVER AND WYOMING RANGES-
342 AM MDT SAT OCT 6 2007

...WINTER STORM WARNING NOW IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

SNOW LEVELS WILL LOWER TO AROUND 6500 FEET BY SATURDAY MORNING.
SNOWFALL AMOUNTS OF 9 TO 12 INCHES ARE POSSIBLE WITH HIGHER
AMOUNTS ABOVE 9000 FEET. SNOW WILL TAPER OFF DURING THE MID
AFTERNOON HOURS.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

WYZ012-061745-
/O.EXT.KRIW.WS.W.0007.000000T0000Z-071006T2100Z/
TETON AND GROS VENTRE MOUNTAINS-
342 AM MDT SAT OCT 6 2007

...WINTER STORM WARNING NOW IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

SNOW LEVELS WILL LOWER TO AROUND 6500 FEET BY SATURDAY MORNING.
SNOWFALL AMOUNTS OF 9 TO 12 INCHES ARE POSSIBLE WITH HIGHER
AMOUNTS ABOVE 9000 FEET. SNOW WILL TAPER OFF DURING THE MID
AFTERNOON HOURS.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

WYZ014-015-061745-
/O.EXT.KRIW.WS.W.0007.000000T0000Z-071006T2100Z/
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
342 AM MDT SAT OCT 6 2007

...WINTER STORM WARNING NOW IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

SNOW LEVELS WILL LOWER TO AROUND 6500 FEET BY SATURDAY MORNING.
SNOWFALL AMOUNTS OF 9 TO 12 INCHES ARE POSSIBLE WITH HIGHER
AMOUNTS ABOVE 9000 FEET. SNOW WILL TAPER OFF DURING THE MID
AFTERNOON HOURS. THE HIGHER SOUTHWEST FACING SLOPES ABOVE 9000 FEET
MAY SEE HIGHER AMOUNTS BY SATURDAY AFTERNOON.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

WYZ002-061745-
/O.EXT.KRIW.WW.Y.0001.000000T0000Z-071006T2100Z/
ABSAROKA MOUNTAINS-
342 AM MDT SAT OCT 6 2007

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

SNOW LEVELS WILL LOWER TO AROUND 6500 FEET THIS MORNING. SNOWFALL
AMOUNTS OF 6 TO 8 INCHES ARE POSSIBLE WITH HIGHER AMOUNTS OVER A
FOOT ABOVE 9000 FEET. THESE HIGHER AMOUNTS ARE EXPECTED IN THE
SOUTHERN PORTION OF THE ABSAROKAS NORTH OF DUBOIS...WHILE 4 TO 8
INCHES IS EXPECTED IN THE CENTRAL AND NORTHERN PORTIONS OF THE
MOUNTAINS. SNOW WILL TAPER OFF DURING THE MID AFTERNOON HOURS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

WYZ001-061745-
/O.EXT.KRIW.WW.Y.0001.000000T0000Z-071006T2100Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
342 AM MDT SAT OCT 6 2007

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

SNOW LEVELS WILL LOWER TO AROUND 6500 FEET THIS MORNING. SNOWFALL
AMOUNTS OF 3 TO 7 INCHES ARE EXPECTED WITH HIGHER AMOUNTS ABOVE
9000 FEET. SNOW WILL TAPER OFF DURING THE MID AFTERNOON HOURS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

WYZ025-061745-
/O.EXT.KRIW.WW.Y.0001.000000T0000Z-071006T2100Z/
UPPER GREEN RIVER BASIN FOOTHILLS-
INCLUDING THE CITY OF...PINEDALE
342 AM MDT SAT OCT 6 2007

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

A CHANGEOVER FROM RAIN TO SNOW IS EXPECTED OVER THE NORTHERN
GREEN RIVER BASIN FROM BOULDER AND PINEDALE...TO CORA AND
BONDURANT THIS MORNING...WITH SNOW ENDING THIS AFTERNOON. SNOWFALL
AMOUNTS OF 2 TO 5 INCHES ARE EXPECTED WITH THIS STORM.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

WYZ013-061745-
/O.EXT.KRIW.WW.Y.0001.000000T0000Z-071006T2100Z/
JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
342 AM MDT SAT OCT 6 2007

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

SNOW IS EXPECTED TO CONTINUE ACROSS THE AREA AND END BY MID AFTERNOON.
AREAS AROUND JACKSON AND WILSON ARE ONLY EXPECTED TO RECEIVE 2 TO
4 INCHES...WHILE LOCATIONS IN THE NORTHERN PART OF JACKSON...FROM
MOOSE TO MORAN JUNCTION...MAY EXPECT TO RECEIVE 2 TO 5 INCHES BY
LATE SATURDAY AFTERNOON.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

WYZ027-061745-
/O.EXT.KRIW.WW.Y.0001.000000T0000Z-071006T2100Z/
SOUTH LINCOLN COUNTY-
INCLUDING THE CITIES OF...KEMMERER...COKEVILLE
342 AM MDT SAT OCT 6 2007

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

RAIN AND SNOW WILL CHANGE OVER TO ALL SNOW ACROSS SOUTHERN
LINCOLN COUNTY AND CONTINUE INTO THIS AFTERNOON. LOCATIONS FROM
COKEVILLE...TO SAGE...AND KEMMERER CAN EXPECT TO RECEIVE 2 TO 5 INCHES
OF SNOW BY MID AFTERNOON.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

SMITH

000 
WWUS45 KRIW 061600
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
1000 AM MDT SAT OCT 6 2007

...MAJOR WINTER STORM WILL CONTINUE TO IMPACT THE WESTERN MOUNTAINS
OF WESTERN WYOMING TODAY...

WYZ024-062100-
/O.CAN.KRIW.WS.W.0007.000000T0000Z-071006T2100Z/
/O.NEW.KRIW.SN.Y.0021.071006T1600Z-071006T2100Z/
SALT RIVER AND WYOMING RANGES-
1000 AM MDT SAT OCT 6 2007

...SNOW ADVISORY IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON. THE
WINTER STORM WARNING HAS BEEN CANCELLED. 

AN INCH OR TWO OF SNOW HAS FALLEN ACROSS THE SALT RIVER AND
WYOMING MOUNTAINS...AND SNOW SHOWERS ARE EXPECTED TO REDEVELOP BY
MIDDAY AND LAST THROUGH THE AFTERNOON. AN ADDITIONAL 2 TO 4 INCHES
COULD OCCUR WITH THESE SNOW SHOWERS.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

WYZ012-062100-
/O.CAN.KRIW.WS.W.0007.000000T0000Z-071006T2100Z/
/O.NEW.KRIW.SN.Y.0021.071006T1600Z-071006T2100Z/
TETON AND GROS VENTRE MOUNTAINS-
1000 AM MDT SAT OCT 6 2007

...SNOW ADVISORY IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON. THE
WINTER STORM WARNING HAS BEEN CANCELLED. 

AN INCH OR TWO OF SNOW HAS FALLEN ACROSS THE TETON AND GROS VENTRE
MOUNTAINS WITH HIGHER AMOUNTS ABOVE 10000 FEET.  SNOW SHOWERS ARE
EXPECTED TO CONTINUE THROUGH THE AFTERNOON...WITH AN ADDITIONAL 2 TO 4
INCHES EXPECTED...WITH ISOLATED 6 INCHES POSSIBLE.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

WYZ014-015-061700-
/O.CAN.KRIW.WS.W.0007.000000T0000Z-071006T2100Z/
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
1000 AM MDT SAT OCT 6 2007

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE WINTER
STORM WARNING. 

ONE TO TWO INCHES OF SNOW FELL ACROSS THE WIND RIVER
MOUNTAINS...WITH HIGHER AMOUNTS ABOVE 10000 FEET LAST NIGHT AND
EARLY SATURDAY MORNING. A BREAK IN THE SNOW IS EXPECTED THROUGH
MIDDAY...BEFORE SNOW SHOWERS ARE EXPECTED TO REDEVELOP ACROSS THE
WIND RIVER MOUNTAINS. HOWEVER...SNOW AMOUNTS ARE EXPECTED TO BE
GENERALLY LIGHT WITH A FEW AREAS PICKING UP AN ADDITIONAL 2 OR 3
INCHES. MORE SNOWFALL COULD OCCUR TONIGHT AND PEOPLE ARE URGED TO
KEEP ABREAST ON THE LATEST UPDATES ON THIS EARLY WINTER STORM.

$$

WYZ013-025-027-061700-
/O.CAN.KRIW.WW.Y.0001.000000T0000Z-071006T2100Z/
JACKSON HOLE-UPPER GREEN RIVER BASIN FOOTHILLS-
SOUTH LINCOLN COUNTY-
INCLUDING THE CITIES OF...JACKSON...PINEDALE...KEMMERER...
COKEVILLE
1000 AM MDT SAT OCT 6 2007

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE WINTER
WEATHER ADVISORY. 

SCATTERED SNOW SHOWERS ARE STILL EXPECTED ACROSS JACKSON HOLE...UPPER
GREEN RIVER BASIN FOOTHILLS AND SOUTHERN LINCOLN COUNTY THIS
AFTERNOON...WITH ONE TO TWO INCHES POSSIBLE...BUT THE HEAVIER
ACTIVITY IS EXPECTED TO REMAIN IN THE MOUNTAINS.

$$

WYZ002-062100-
/O.CON.KRIW.WW.Y.0001.000000T0000Z-071006T2100Z/
ABSAROKA MOUNTAINS-
1000 AM MDT SAT OCT 6 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON. THREE TO SIX INCHES OF SNOW FELL ACROSS MUCH OF THE
ABSAROKA MOUNTAINS LAST NIGHT AND EARLY MORNING SATURDAY...WITH
HIGHER AMOUNTS NEAR 9 INCHES ACROSS THE SOUTHERN ABSAROKA
MOUNTAINS. SNOW SHOWERS ARE EXPECTED TO CONTINUE THIS AFTERNOON
WITH AN ADDITIONAL 2 TO 4 INCHES EXPECTED...WITH THE HEAVIEST
AMOUNTS ACROSS SOUTHWEST FACING SLOPES.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

WYZ001-062100-
/O.CON.KRIW.WW.Y.0001.000000T0000Z-071006T2100Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
1000 AM MDT SAT OCT 6 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON. FOUR TO EIGHT INCHES OF SNOW FELL ACROSS EASTERN AND
SOUTHEAST YELLOWSTONE LAST NIGHT AND EARLY SATURDAY...WITH ONE TO
THREE INCHES OVER THE REST OF THE PARK. SNOW SHOWERS ARE EXPECTED
TO CONTINUE THROUGH THE AFTERNOON...WITH AN ADDITIONAL 2 TO 4
INCHES POSSIBLE.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND USE CAUTION WHILE DRIVING.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RIVERTON WY
457 AM MDT FRI OCT 5 2007

SHORT TERM...FRIDAY THROUGH SUNDAY NIGHT

...MAJOR WINTER STORM TO IMPACT THE MOUNTAINS OF WESTERN WYOMING
LATE FRIDAY INTO SATURDAY...

.A DEVELOPING STORM SYSTEM OVER THE PACIFIC NORTHWEST WILL MOVE
INTO WESTERN WYOMING ON FRIDAY EVENING AND MOVE SLOWLY ACROSS THE
AREA THROUGH SATURDAY NIGHT. SNOW LEVELS WILL GRADUALLY LOWER
THROUGHOUT THE EVENT. SNOW WILL DEVELOP ACROSS THE SOUTHWEST
MOUNTAINS LATE FRIDAY AFTERNOON AND SPREAD INTO THE ABSAROKAS BY
FRIDAY EVENING. SNOW LEVELS WILL VARY FROM 9000 TO 10000 FEET
FRIDAY AFTERNOON BUT LOWER TO THE VALLEY FLOORS BY SATURDAY IN
MOST AREAS. SNOWFALL AMOUNTS WILL LIKELY VARY FROM 6 TO 12 INCHES
WITH HIGHER AMOUNTS ABOVE 9000 TO 10000 FEET.

WATER VAPOR AND IR IMAGERY SHOW A LARGE TROUGH DIGGING FROM THE
PAC NW INTO CENTRAL CA EARLY THIS MORNING. 00Z UPPER AIR DATA INDICATED
THAT 24-HR H5 HEIGHT FALLS ACROSS NORTHERN AND CENTRAL CA RANGED
FROM 10 TO 12 DM...SUPPORTING THE GFS SOLUTION WHICH PROJECTS THAT
THIS SYSTEM WILL CUT OFF OVER THE NORTHERN SIERRA BY 18Z TODAY. AS
THE SYSTEM BECOMES NEUTRALLY TILTED TODAY...MOISTURE WILL BE
ADVECTED NORTHWARD ACROSS WY FROM THE SOUTHWEST U.S. H25 JET SPEED
MAXIMA WILL ALSO MOVE ACROSS WESTERN AND CENTRAL WY. DYNAMICS AND
INCREASING MOISTURE TAP FROM THE SOUTHWEST COMBINED WITH LIFTED
INDICES SLIGHTLY BELOW ZERO C WILL GENERATE SHOWERS AND
THUNDERSTORMS ACROSS SOUTHWEST WY AND EAST OF THE DIVIDE WITH
SHOWERS IN THE COOLER MORE STABLE AIRMASS ACROSS THE REMAINDER OF WY.
GFS AND NAM ARE BRINGING COLDER AIR INTO THE REGION MORE SLOWLY
THAN PREVIOUS RUNS...AND HAVE DELAYED THE WINTER STORM WATCH FOR
THE WESTERN AND CENTRAL MOUNTAINS UNTIL 00Z SATURDAY. AS THE CUT
OFF LOW MOVES SLOWLY EAST NORTHEASTWARD ACROSS NORTHERN NV AND
INTO SOUTHERN WY TONIGHT AND SATURDAY...GFS...NAM AND ECMWF
INDICATE MODERATE TO HEAVY PRECIPITATION WEST OF THE DIVIDE.
PRECIPITATION WILL PERSIST SATURDAY NIGHT AND SUNDAY ACROSS THE
ENTIRE CWA...AS THE TROUGH AXIS SLOWLY MOVES ACROSS THE REGION.
SHARP RIDGING ALOFT SUNDAY NIGHT AND MONDAY WILL DRY OUT THE
ATMOSPHERE WITH HIGHS MONDAY RECOVERING INTO THE UPPER 50S TO
UPPER 60S IN THE LOWER ELEVATIONS.

LONG TERM...MONDAY THROUGH FRIDAY
HIGH PRESSURE WILL BUILD OVER THE WESTERN US...GREAT BASIN...
CENTRAL AND NORTHERN ROCKIES WITH IMPROVING CONDITIONS.
TEMPERATURES WILL WARM TO NEAR NORMAL ON MONDAY THEN BECOME ABOVE
NORMAL TUESDAY AND WEDNESDAY THROUGH FRIDAY. DRY CONDITIONS WILL
PREVAIL WITH BREEZY CONDITIONS DEVELOPING TUESDAY AND WEDNESDAY.
MODELS IN FAIR AGREEMENT WITH THE BUILDING HIGH PRESSURE RIDGE.

AVIATION...

WIDESPREAD MVFR TO IFR CONDITIONS WITH LOW CEILINGS AND AREAS OF LIGHT
PRECIPITATION WILL CONTINUE ACROSS NORTHERN WYOMING AND THE WESTERN
MOUNTAINS. MOUNTAIN OBSCURATIONS CAN BE EXPECTED TO BE WIDESPREAD
ACROSS THE NORTH AND WEST. A STORM SYSTEM WILL BE INTENSIFYING
ACROSS THE AREA TODAY. RAIN AND SNOW WILL BE INCREASING THROUGH
THE AFTERNOON WITH IFR TO MVFR CONDITIONS SPREADING SOUTH.
THUNDERSTORMS WILL BE A THREAT SPREADING NORTH FROM SOUTHWEST
WYOMING THIS AFTERNOON MOVING NORTH INTO THE EVENING. WINDY
WEATHER WILL OCCUR OVER SOUTHERN WYOMING TODAY. WEATHER CONDITIONS
WILL WORSEN OVER WESTERN AND NORTHERN WY FRIDAY NIGHT WITH MVFR TO
IFR CONDITIONS BECOMING WIDESPREAD AS RAIN AND SNOW INTENSIFIES
THROUGH SATURDAY.

FIRE WEATHER...

WINDS WILL STRENGTHEN TODAY FROM THE SOUTHWEST ACROSS THE REGION.
THE HIGHEST WIND SPEEDS WILL OCCUR ALONG THE I-80 CORRIDOR WITH
SUSTAINED WINDS FROM 15 TO 25 KT WITH GUSTS TO 35 KT. LOW LEVEL
MOISTURE WILL INCREASE DURING THE DAY...AS MOISTURE FLOWING
NORTHWARD FROM THE SOUTHWEST U.S. COMBINES WITH JET DYNAMICS AND
INSTABILITY TO PRODUCE SCATTERED SHOWERS AND...EAST OF THE
DIVIDE AND ACROSS SOUTHWEST WYOMING...THUNDERSTORMS. COLD CORE
UPPER LOW WILL BRING INCREASING CHANCES OF WETTING RAIN AND SNOW
THE REGION TONIGHT THROUGH SATURDAY WITH SHOWERS LINGERING
SATURDAY NIGHT AND SUNDAY. MUCH COOLER TEMPERATURES WILL PREVAIL
SATURDAY AND SUNDAY...BUT WILL MODERATE TO NEAR NORMAL MONDAY AS
DRIER AND MILDER AIR RETURN THE THE REGION.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WATCH FROM THIS EVENING THROUGH SATURDAY AFTERNOON
FOR WYZ001-002-012-014-015-024.

&&

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

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
501 AM MDT FRI OCT 5 2007

WYZ001>020-022>030-061101-
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-
501 AM MDT FRI OCT 5 2007

...WINTER STORM WATCH IS IN EFFECT FOR THE WEST CENTRAL MOUNTAINS
INCLUDING YELLOWSTONE NATIONAL PARK AND THE WIND RIVER RANGE FROM 6
PM FRIDAY THROUGH 6 PM SATURDAY...

...WINTER STORM WATCH FOR THE ABSAROKA MOUNTAINS FROM 6 PM FRIDAY
THROUGH 6 PM SATURDAY.

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

A MAJOR STORM SYSTEM IS EXPECTED TO BEGIN TO IMPACT WYOMING LATE
THIS AFTERNOON AND THIS EVENING. AS THE STORM SYSTEM ORGANIZES OVER
THE NORTHERN GREAT BASIN TODAY...THE CHANCES OF PRECIPITATION WILL
INCREASE ACROSS ALL OF WESTERN WYOMING THIS AFTERNOON...AND IN
CENTRAL WYOMING DURING THE EARLY EVENING. AS MUCH AS 6 TO
12 INCHES OF SNOWFALL IS EXPECTED THROUGH SATURDAY ACROSS THE
SALT RIVER RANGE...WYOMING RANGE...GROS VENTRE RANGE...WIND RIVER
MOUNTAINS AND THE ABSAROKA MOUNTAIN RANGE AND YELLOWSTONE
NATIONAL PARK ALONG WITH LOCAL AMOUNTS OF OVER ONE FOOT IN SOME AREAS
ABOVE 9000 FEET. 5 TO 10 INCHES OF SNOWFALL IS EXPECTED ACROSS THE
TETONS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

COLDER AIR WILL FILTER INTO AREAS EAST OF THE DIVIDE ON SATURDAY
WHICH MAY TURN THE RAIN INTO SNOW ABOVE ABOUT 5500 FEET LATE
SATURDAY. SNOW...WITH A RAIN SNOW MIX IN THE LOWER ELEVATIONS MAY BE
WIDESPREAD ACROSS THE AREA SATURDAY NIGHT ALONG WITH COOLER
TEMPERATURES. PRECIPITATION WILL TAPER OFF SUNDAY...AS THE STORM
SYSTEM MOVES INTO THE NORTHERN PLAINS.

HUNTERS AND OTHERS WITH OUTDOOR ACTIVITIES PLANNED THIS WEEKEND
SHOULD CHECK THE LATEST FORECAST ON THIS POTENTIAL RAIN AND SNOW
STORM.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT PRECIPITATION AMOUNTS. THANK YOU.

TEAM RIVERTON