Winter Storm Warning 13, NWS Cheyenne, WY

000 
WWUS45 KCYS 161040
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
340 AM MST SAT DEC 16 2006

...SIGNIFICANT WINTER STORM WILL AFFECT SOUTHEAST WYOMING
THIS AFTERNOON THROUGH SUNDAY...

.A POTENT LONG LIVED STORM SYSTEM WILL AFFECT SOUTHEAST WYOMING
THIS AFTERNOON THROUGH SUNDAY. THIS STORM SYSTEM WILL LIKELY
PRODUCE SIGNIFICANT SNOW ACCUMULATIONS...ESPECIALLY FROM CARBON
COUNTY TO CONVERSE COUNTY AND THE SNOWY RANGE.  TRAVEL WILL
BECOME HAZARDOUS IN THAT AREA TODAY AND CONTINUE THROUGH SUNDAY.

WYZ069-070-161145-
/O.CAN.KCYS.WS.A.0013.061217T0100Z-061218T0000Z/
CHEYENNE FOOTHILLS-PINE BLUFFS-
INCLUDING THE CITIES OF...CHEYENNE...PINE BLUFFS
340 AM MST SAT DEC 16 2006

...WINTER STORM WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE WINTER
STORM WATCH. 

ALTHOUGH THE STORM WILL STILL BRING SNOW TO CHEYENNE AND PINE
BLUFFS...IT WILL BE JUST BELOW SNOW ADVISORY CRITERIA. THUS THE
WINTER STORM WATCH HAS BEEN CANCELLED FOR THIS AREA. TOTAL
SNOWFALL ACCUMULATIONS FROM THIS STORM WILL BE AROUND 4 INCHES FOR
CHEYENNE AND TAPER EASTWARD WITH PINE BLUFFS RECEIVING 2 TO 3
INCHES OF SNOW.

$$

WYZ059-061>064-161800-
/O.CON.KCYS.WS.W.0013.061216T1900Z-061218T0000Z/
CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE-
NORTH LARAMIE RANGE-
INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...RAWLINS...HANNA...
MEDICINE BOW...CENTENNIAL...GARRETT
340 AM MST SAT DEC 16 2006

...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON TODAY TO 5 PM
MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM NOON TODAY TO 5 PM
MST SUNDAY. 

LIGHT SNOW SHOWERS HAVE BEGUN OVER FAR WESTERN PORTIONS OF CARBON
COUNTY. SNOW SHOWERS WILL BECOME WIDESPREAD AFTER MID DAY TODAY
AND CONTINUE THROUGH SUNDAY. SNOW WILL BE HEAVY AT TIMES. TOTAL
STORM SNOWFALL AMOUNTS BY SUNDAY EVENING MAY REACH 8 TO 13 INCHES
ACROSS THE LOWER ELEVATIONS WITH 13 TO 20 INCHES ACROSS THE
MOUNTAINS. LOCALLY HIGHER AMOUNTS WILL OCCUR ON SOUTHWEST FACING
SLOPES AND AT THE HIGHER PEAKS. WEST TO SOUTHWEST WINDS OF 20 TO
30 MPH WITH GUSTS UP TO 40 MPH CAN BE EXPECTED. TRAVELERS SHOULD
USE CAUTION AS VISIBILITIES MAY BE REDUCED BELOW A MILE DUE TO
BLOWING SNOW.

TRAVEL WILL BE IMPACTED IN THIS AREA WHICH INCLUDES INTERSTATE
80 IN CARBON COUNTY AND INTERSTATE 25 IN CONVERSE COUNTY. THOSE
PLANNING TRAVEL SHOULD BE SURE TO CHECK THE LATEST WEATHER
FORECASTS AND CURRENT WEATHER AND ROAD CONDITIONS BEFORE LEAVING.

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.

$$

WYZ060-065>068-161800-
/O.UPG.KCYS.WS.A.0013.061217T0100Z-061218T0000Z/
/O.NEW.KCYS.SN.Y.0010.061217T0100Z-061218T0000Z/
NIOBRARA-LARAMIE VALLEY-LARAMIE RANGE-PLATTE-GOSHEN-
INCLUDING THE CITIES OF...LUSK...LARAMIE...BUFORD...HORSE CREEK...
WHEATLAND...GUERNSEY...TORRINGTON
340 AM MST SAT DEC 16 2006

...SNOW ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 5 PM MST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 5 PM MST
SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

LIGHT SNOW SHOWERS WILL INITIALLY SPREAD EASTWARD ACROSS PORTIONS
OF SOUTHEAST WYOMING THROUGH THE DAY. HOWEVER...INITIALLY THERE
WILL BE LITTLE ACCUMULATION. SNOW SHOWERS WILL BECOME WIDESPREAD
BY THE EVENING AND WILL BE HEAVY AT TIMES. TOTAL SNOWFALL
ACCUMULATIONS OF 6 TO 8 INCHES CAN BE EXPECTED IN THE LOWER
ELEVATIONS WITH 8 TO 10 INCHES EXPECTED IN THE SOUTHERN LARAMIE
MOUNTAINS. WEST WINDS OF 10 TO 20 MPH WITH GUSTS UP 30 MPH CAN BE
EXPECTED AT TIMES. TRAVELERS SHOULD USE CAUTION AS VISIBILITIES
MAY BE REDUCED AT TIMES TO BELOW TWO MILES DUE TO BLOWING SNOW.

TRAVEL WILL BE IMPACTED IN THIS AREA WHICH INCLUDES INTERSTATE
80 IN ALBANY COUNTY AND INTERSTATE 25 IN PLATTE COUNTY. THOSE
PLANNING TRAVEL SHOULD BE SURE TO CHECK THE LATEST WEATHER
FORECASTS AND CURRENT WEATHER AND ROAD CONDITIONS BEFORE LEAVING.

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.

$$

000 
WWUS45 KCYS 162115
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
215 PM MST SAT DEC 16 2006

...SIGNIFICANT WINTER STORM WILL AFFECT SOUTHEAST WYOMING THROUGH
SUNDAY...

.A POTENT AND LONG LIVED STORM SYSTEM WILL AFFECT SOUTHEAST
WYOMING THIS EVENING THROUGH SUNDAY. THIS STORM SYSTEM WILL
PRODUCE SIGNIFICANT SNOW ACCUMULATIONS...ESPECIALLY FROM CARBON
COUNTY TO CONVERSE COUNTY AND THE SNOWY RANGE. TRAVEL WILL BECOME
TREACHEROUS IN THAT AREA THROUGH SUNDAY EVENING.

WYZ059-061>064-170615-
/O.CON.KCYS.WS.W.0013.000000T0000Z-061218T0000Z/
CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE-
NORTH LARAMIE RANGE-
INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...RAWLINS...HANNA...
MEDICINE BOW...CENTENNIAL...GARRETT
215 PM MST SAT DEC 16 2006

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. 

SNOW SHOWERS WILL INCREASE IN COVERAGE AND INTENSITY THIS EVENING
FROM WEST TO EAST. FAR WESTERN PORTIONS OF CARBON COUNTY WILL SEE
HEAVY SNOW BY SUNSET...AND THE ACTIVITY WILL SPREAD THROUGH WESTERN
ALBANY COUNTY AND CONVERSE COUNTY DURING THE EVENING HOURS.
PERIODS OF HEAVY SNOW WILL PERSIST THROUGH THE DAY SUNDAY. TOTAL
STORM SNOWFALL AMOUNTS BY SUNDAY EVENING MAY REACH 8 TO 13 INCHES
ACROSS THE LOWER ELEVATIONS WITH 13 TO 20 INCHES ACROSS THE
MOUNTAINS. LOCALLY HIGHER AMOUNTS WILL OCCUR ON SOUTHWEST FACING
SLOPES AND AT THE HIGHER PEAKS. ALSO...WEST TO SOUTHWEST WINDS OF
20 TO 30 MPH WITH GUSTS UP TO 40 MPH CAN BE EXPECTED. TRAVEL...IF
NECESSARY...WILL REQUIRE EXTREME CAUTION AS VISIBILITIES MAY BE
REDUCED TO NEAR ZERO DUE TO BLOWING SNOW.

ROADWAYS WILL BE SEVERELY IMPACTED IN THIS AREA WHICH INCLUDES
INTERSTATE 80 IN CARBON COUNTY AND INTERSTATE 25 IN CONVERSE
COUNTY. THOSE PLANNING TRAVEL OR OUTDOOR ACTIVITIES SHOULD MAKE
ALTERNATE ARRANGEMENTS TO AVOID THE HAZARDS OF TRAVEL THIS EVENING
AND SUNDAY. BE SURE TO CHECK THE LATEST WEATHER FORECASTS AND
CURRENT WEATHER AND ROAD CONDITIONS.


$$

WYZ060-065>068-170615-
/O.CON.KCYS.SN.Y.0010.061217T0100Z-061218T0000Z/
NIOBRARA-LARAMIE VALLEY-LARAMIE RANGE-PLATTE-GOSHEN-
INCLUDING THE CITIES OF...LUSK...LARAMIE...BUFORD...HORSE CREEK...
WHEATLAND...GUERNSEY...TORRINGTON
215 PM MST SAT DEC 16 2006

...SNOW ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 5 PM
MST SUNDAY...

A SNOW ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 5 PM
MST SUNDAY. 

SNOW SHOWERS WILL BECOME WIDESPREAD ALONG THE LARAMIE RANGE AND
ADJACENT PLAINS OF PLATTE...GOSHEN...AND NIOBRARA COUNTIES THIS
EVENING. THE SNOW WILL BE HEAVY AT TIMES. TOTAL SNOWFALL
ACCUMULATIONS OF 6 TO 8 INCHES CAN BE EXPECTED IN THE LOWER
ELEVATIONS WITH 8 TO 12 INCHES EXPECTED IN THE SOUTHERN LARAMIE
RANGE. WEST WINDS OF 10 TO 20 MPH WITH GUSTS UP 30 MPH CAN BE
EXPECTED AT TIMES. TRAVELERS SHOULD USE CAUTION AS VISIBILITIES
MAY BE REDUCED AT TIMES TO A 1/4 MILE OR LESS DUE TO BLOWING SNOW.

TRAVEL WILL BE HEAVILY IMPACTED IN THIS AREA WHICH INCLUDES
INTERSTATE 80 IN ALBANY COUNTY AND INTERSTATE 25 IN PLATTE COUNTY.
THOSE PLANNING TRAVEL SHOULD BE SURE TO CHECK THE LATEST WEATHER
FORECASTS AND CURRENT WEATHER AND ROAD CONDITIONS BEFORE LEAVING.

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.

$$

SOWKO

000 
WWUS45 KCYS 170145
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
645 PM MST SAT DEC 16 2006

...SIGNIFICANT WINTER STORM WILL AFFECT SOUTHEAST WYOMING THROUGH
SUNDAY...

.A POTENT AND LONG LIVED STORM SYSTEM WILL AFFECT SOUTHEAST
WYOMING THIS EVENING THROUGH SUNDAY. THIS STORM SYSTEM WILL
PRODUCE SIGNIFICANT SNOW ACCUMULATIONS...ESPECIALLY FROM CARBON
COUNTY TO CONVERSE COUNTY AND THE SNOWY RANGE. TRAVEL WILL BECOME 
HAZARDOUS IN THAT AREA THROUGH SUNDAY.

WYZ059-064-171200-
/O.EXT.KCYS.WS.W.0013.061217T0700Z-061218T0000Z/
CONVERSE-NORTH LARAMIE RANGE-
INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...GARRETT
645 PM MST SAT DEC 16 2006

...WINTER STORM WARNING NOW IN EFFECT FROM MIDNIGHT TONIGHT TO
5 PM MST SUNDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT FROM MIDNIGHT TONIGHT
TO 5 PM MST SUNDAY. 

AREAS OF LIGHT SNOW WILL DEVELOP THIS EVENING...AND BECOME MORE 
WIDESPREAD AFTER MIDNIGHT.  THE SNOW WILL CONTINUE THROUGH MOST OF 
SUNDAY. TOTAL STORM SNOWFALL BY SUNSET SUNDAY WILL BE 4 TO 8 INCHES 
IN THE LOWER ELEVATIONS...AND 7 TO 12 INCHES IN THE MOUNTAINS.

ROADS WILL BE SLICK AND SNOW PACKED BY MORNING. THOSE PLANNING 
TRAVEL OR OUTDOOR ACTIVITIES SHOULD BE PREPARED TO ENCOUNTER WINTER 
WEATHER.  BE SURE TO CHECK THE LATEST WEATHER AND ROAD CONDITIONS 
BEFORE SETTING OUT.

$$

WYZ061>063-171200-
/O.CON.KCYS.WS.W.0013.000000T0000Z-061218T0000Z/
SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE-
INCLUDING THE CITIES OF...RAWLINS...HANNA...MEDICINE BOW...
CENTENNIAL
645 PM MST SAT DEC 16 2006

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. 

SNOW WILL SPREAD NORTHEAST ACROSS MUCH OF CARBON COUNTY THIS 
EVENING...WITH THE SNOW CONTINUING INTO SUNDAY. TOTAL STORM SNOWFALL 
AMOUNTS BY SUNSET SUNDAY WILL BE 5 TO 8 INCHES ACROSS THE LOWER  
ELEVATIONS WITH 10 TO 15 INCHES IN THE MOUNTAINS. SOME EASTERLY 
WINDS OF 15 TO 30 MPH WILL CAUSE AREAS OF BLOWING AND DRIFTING SNOW 
MAINLY LATER TONIGHT INTO SUNDAY MORNING.

ROADS WILL BECOME SLICK AND SNOW PACKED BY MORNING.  THOSE PLANNING 
TRAVEL OR OUTDOOR ACTIVITIES SHOULD BE PREPARED TO ENCOUNTER WINTER 
WEATHER.  BE SURE TO CHECK THE LATEST WEATHER AND ROAD CONDITIONS 
BEFORE SETTING OUT.


$$

WYZ060-065>068-171200-
/O.EXT.KCYS.SN.Y.0010.061217T0700Z-061218T0000Z/
NIOBRARA-LARAMIE VALLEY-LARAMIE RANGE-PLATTE-GOSHEN-
INCLUDING THE CITIES OF...LUSK...LARAMIE...BUFORD...HORSE CREEK...
WHEATLAND...GUERNSEY...TORRINGTON
645 PM MST SAT DEC 16 2006

...SNOW ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 5 PM MST
SUNDAY...

THE SNOW ADVISORY IS NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 5 PM
MST SUNDAY. 

SCATTERED SNOW SHOWERS WILL DEVELOP OVER THE LARAMIE RANGE AND 
ADJACENT PLAINS OF PLATTE...GOSHEN...AND NIOBRARA COUNTIES THIS 
EVENING....WITH SNOW BECOMING WIDESPREAD AFTER MIDNIGHT.  THE SNOW 
WILL CONTINUE THROUGH SUNDAY WITH TOTAL SNOWFALL OF 4 TO 8 INCHES.

ROADS WILL BECOME SLICK AND SNOW PACKED BY MORNING.  THOSE PLANNING 
TRAVEL OR OUTDOOR ACTIVITIES SHOULD BE PREPARED TO ENCOUNTER WINTER 
WEATHER.  BE SURE TO CHECK THE LATEST WEATHER AND ROAD CONDITIONS 
BEFORE SETTING OUT. 

$$

000 
WWUS45 KCYS 171139
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
439 AM MST SUN DEC 17 2006

...WINTER STORM TO AFFECT SOUTHEAST WYOMING TODAY...

.A POTENT STORM SYSTEM WILL CONTINUE TO AFFECT SOUTHEAST WYOMING
TODAY. THIS STORM SYSTEM WILL PRODUCE SIGNIFICANT SNOW
ACCUMULATIONS...ESPECIALLY FROM CARBON COUNTY TO CONVERSE COUNTY
AND THE SNOWY RANGE. TRAVEL WILL BE HAZARDOUS IN THAT AREA
THROUGH THIS EVENING.

WYZ059-061>064-180000-
/O.CON.KCYS.WS.W.0013.000000T0000Z-061218T0000Z/
CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE-
NORTH LARAMIE RANGE-
INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...RAWLINS...HANNA...
MEDICINE BOW...CENTENNIAL...GARRETT
439 AM MST SUN DEC 17 2006

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

LIGHT SNOW WILL CONTINUE TO FALL OVER THE AREA TODAY THEN
GRADUALLY TAPER OFF THIS EVENING. TOTAL STORM SNOWFALL BY THIS
EVENING IS EXPECTED TO BE FROM 5 TO 9 INCHES IN THE LOWER
ELEVATIONS...AND 8 TO 12 INCHES OVER THE MOUNTAINS.

ROADS WILL BE SLICK AND SNOW PACKED. THOSE PLANNING TRAVEL OR
OUTDOOR ACTIVITIES SHOULD BE PREPARED TO ENCOUNTER WINTER WEATHER.
BE SURE TO CHECK THE LATEST WEATHER AND ROAD CONDITIONS BEFORE
SETTING OUT.

$$

WYZ060-065>068-180000-
/O.CON.KCYS.SN.Y.0010.000000T0000Z-061218T0000Z/
NIOBRARA-LARAMIE VALLEY-LARAMIE RANGE-PLATTE-GOSHEN-
INCLUDING THE CITIES OF...LUSK...LARAMIE...BUFORD...HORSE CREEK...
WHEATLAND...GUERNSEY...TORRINGTON
439 AM MST SUN DEC 17 2006

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

SCATTERED SNOW SHOWERS WILL SLOWLY INCREASE IN COVERAGE THIS
MORNING OVER THE LARAMIE RANGE AND ADJACENT PLAINS OF PLATTE...
GOSHEN...AND NIOBRARA COUNTIES. THE SNOW WILL CONTINUE THROUGH
THIS AFTERNOON THEN DIMINISH THIS EVENING.  TOTAL SNOWFALL OF 4 TO
8 INCHES ARE EXPECTED...WITH THE GREATER AMOUNTS OVER HIGHER
TERRAIN.

ROADS WILL BECOME SLICK AND SNOW PACKED. THOSE PLANNING TRAVEL OR
OUTDOOR ACTIVITIES SHOULD BE PREPARED TO ENCOUNTER WINTER WEATHER.
BE SURE TO CHECK THE LATEST WEATHER AND ROAD CONDITIONS BEFORE
SETTING OUT.

$$

000 
WWUS45 KCYS 171651
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
951 AM MST SUN DEC 17 2006

...WINTER STORM TO AFFECT SOUTHEAST WYOMING TODAY...

.A POTENT STORM SYSTEM WILL CONTINUE TO AFFECT SOUTHEAST WYOMING
TODAY. THIS STORM SYSTEM WILL PRODUCE SIGNIFICANT SNOW
ACCUMULATIONS...ESPECIALLY FROM CARBON COUNTY TO CONVERSE COUNTY
AND THE SNOWY RANGE. TRAVEL WILL BE HAZARDOUS IN THAT AREA
THROUGH THIS EVENING.

WYZ059-061>064-180000-
/O.CON.KCYS.WS.W.0013.000000T0000Z-061218T0000Z/
CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE-
NORTH LARAMIE RANGE-
INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...RAWLINS...HANNA...
MEDICINE BOW...CENTENNIAL...GARRETT
951 AM MST SUN DEC 17 2006

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

LIGHT SNOW WILL CONTINUE TO FALL OVER THE AREA TODAY THEN
GRADUALLY TAPER OFF THIS EVENING. TOTAL STORM SNOWFALL BY THIS
EVENING IS EXPECTED TO BE FROM 5 TO 10 INCHES IN THE LOWER
ELEVATIONS...AND 8 TO 14 INCHES OVER THE MOUNTAINS.

ROADS WILL BE SLICK AND SNOW PACKED. THOSE PLANNING TRAVEL OR
OUTDOOR ACTIVITIES SHOULD BE PREPARED TO ENCOUNTER WINTER WEATHER.
BE SURE TO CHECK THE LATEST WEATHER AND ROAD CONDITIONS BEFORE
SETTING OUT.

$$

WYZ069-070-180000-
/O.EXA.KCYS.SN.Y.0010.000000T0000Z-061218T0000Z/
CHEYENNE FOOTHILLS-PINE BLUFFS-
INCLUDING THE CITIES OF...CHEYENNE...PINE BLUFFS
951 AM MST SUN DEC 17 2006

...SNOW ADVISORY IN EFFECT UNTIL 5 PM MST THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A SNOW
ADVISORY...WHICH IS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. 

SNOW...HEAVY AT TIMES...HAS MOVED OVER LARAMIE COUNTY SINCE 
SUNRISE. THE SNOW WILL CONTINUE THROUGH THE AFTERNOON...WITH
3 TO 6 INCHES OF NEW SNOW. THE LARGER AMOUNTS WILL BE IN THE
WEST PART OF THE COUNTY. AS OF 930 AM...CHEYENNE HAD A BIT OVER
2 INCHES OF SNOW ON THE GROUND.  

ROADS WILL BE SLICK AND SNOW PACKED. THOSE PLANNING TRAVEL OR
OUTDOOR ACTIVITIES SHOULD BE PREPARED TO ENCOUNTER WINTER WEATHER.
BE SURE TO CHECK THE LATEST WEATHER AND ROAD CONDITIONS BEFORE
LEAVING.

$$

WYZ060-065>068-180000-
/O.CON.KCYS.SN.Y.0010.000000T0000Z-061218T0000Z/
NIOBRARA-LARAMIE VALLEY-LARAMIE RANGE-PLATTE-GOSHEN-
INCLUDING THE CITIES OF...LUSK...LARAMIE...BUFORD...HORSE CREEK...
WHEATLAND...GUERNSEY...TORRINGTON
951 AM MST SUN DEC 17 2006

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

SNOW...HEAVY AT TIMES...WILL BE OVER MUCH OF SOUTHEAST WYOMING
THROUGH THE AFTERNOON.  TOTAL SNOWFALL WILL BE FROM 3 TO 6 INCHES
IN THE AREA. AS OF 930 AM...WHEATLAND HAD ABOUT 5 INCHES OF
SNOW ON THE GROUND...LARAMIE HAD 2 INCHES AND TORRINGTON HAD
BETWEEN 1 AND 2 INCHES OF NEW SNOW.

ROADS WILL BE SLICK AND SNOW PACKED. THOSE PLANNING TRAVEL OR
OUTDOOR ACTIVITIES SHOULD BE PREPARED TO ENCOUNTER WINTER WEATHER.
BE SURE TO CHECK THE LATEST WEATHER AND ROAD CONDITIONS BEFORE
SETTING OUT.

$$

WEILAND

000 
WWUS45 KCYS 172041
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
141 PM MST SUN DEC 17 2006

...WINTER STORM TO AFFECT SOUTHEAST WYOMING THROUGH THIS 
EVENING...

.A STORM SYSTEM WILL CONTINUE TO AFFECT SOUTHEAST WYOMING THROUGH
THIS EVENING. THIS STORM HAS PRODUCED SIGNIFICANT SNOWFALL OVER
MANY LOCATIONS IN SOUTHEAST WYOMING LAST NIGHT AND TODAY.
ACCUMULATING SNOW WILL CONTINUE THROUGH THE EVENING MAKING TRAVEL
HAZARDOUS. THE STORM SYSTEM WILL WEAKEN AND MOVE SOUTH AND SURFACE
HIGH PRESSURE WILL MOVE OVER SOUTHEAST WYOMING TONIGHT...BOTH
ACTING TO TAPER OFF THE SNOW AFTER THIS EVENING.

WYZ059-061>064-180300-
/O.EXT.KCYS.WS.W.0013.000000T0000Z-061218T0300Z/
CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE-
NORTH LARAMIE RANGE-
INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...RAWLINS...HANNA...
MEDICINE BOW...CENTENNIAL...GARRETT
141 PM MST SUN DEC 17 2006

...WINTER STORM WARNING NOW IN EFFECT UNTIL 8 PM MST THIS
EVENING...

SNOW WILL CONTINUE TO FALL OVER THE AREA THIS EVENING. THE SNOW
WILL THEN GRADUALLY TAPER OFF THE REST OF TONIGHT TO FLURRIES.
ADDITIONAL SNOWFALL THROUGH THE EVENING WILL BE 1 TO 4 INCHES.
TOTAL STORM SNOWFALL BY THIS EVENING IS EXPECTED TO BE FROM 5 TO
12 INCHES IN THE LOWER ELEVATIONS...AND 8 TO 16 INCHES OVER THE
MOUNTAINS.

ROADS WILL BE SLICK AND SNOW PACKED. THOSE PLANNING TRAVEL OR
OUTDOOR ACTIVITIES SHOULD BE PREPARED TO ENCOUNTER WINTER WEATHER.
BE SURE TO CHECK THE LATEST WEATHER AND ROAD CONDITIONS BEFORE
SETTING OUT.

$$

WYZ060-065>070-180300-
/O.EXT.KCYS.SN.Y.0010.000000T0000Z-061218T0300Z/
NIOBRARA-LARAMIE VALLEY-LARAMIE RANGE-PLATTE-GOSHEN-
CHEYENNE FOOTHILLS-PINE BLUFFS-
INCLUDING THE CITIES OF...LUSK...LARAMIE...BUFORD...HORSE CREEK...
WHEATLAND...GUERNSEY...TORRINGTON...CHEYENNE...PINE BLUFFS
141 PM MST SUN DEC 17 2006

...SNOW ADVISORY NOW IN EFFECT UNTIL 8 PM MST THIS EVENING...

SNOW WILL BE OVER MUCH OF SOUTHEAST WYOMING THROUGH THE EVENING.
THE SNOW WILL THEN GRADUALLY TAPER OFF THE REST OF TONIGHT TO
FLURRIES. ADDITIONAL SNOWFALL THROUGH THE EVENING WILL BE FROM 1
TO 3 INCHES MAKING TOTAL SNOWFALL 3 TO 7 INCHES.

ROADS WILL BE SLICK AND SNOW PACKED. THOSE PLANNING TRAVEL OR
OUTDOOR ACTIVITIES SHOULD BE PREPARED TO ENCOUNTER WINTER WEATHER.
BE SURE TO CHECK THE LATEST WEATHER AND ROAD CONDITIONS BEFORE
SETTING OUT.

$$

WEILAND

000 
WWUS45 KCYS 180304
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
803 PM MST SUN DEC 17 2006

WYZ059-061>064-180415-
/O.EXP.KCYS.WS.W.0013.000000T0000Z-061218T0300Z/
CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE-
NORTH LARAMIE RANGE-
INCLUDING THE CITIES OF...DOUGLAS...GLENROCK...RAWLINS...HANNA...
MEDICINE BOW...CENTENNIAL...GARRETT
803 PM MST SUN DEC 17 2006

...WINTER STORM WARNING HAS EXPIRED...

THE WINTER STORM WARNING IS NO LONGER IN EFFECT. AREAS OF LIGHT SNOW 
WILL LINGER THE REST OF THIS EVENING...WITH ANY ADDITIONAL SNOWFALL 
LESS THAN AN INCH.

MOTORISTS SHOULD STILL USE CAUTION TRAVELING THE REST OF TONIGHT AS 
ROADS WILL BE SNOWPACKED AND SLICK.

$$

WYZ060-065>070-180415-
/O.EXP.KCYS.SN.Y.0010.000000T0000Z-061218T0300Z/
NIOBRARA-LARAMIE VALLEY-LARAMIE RANGE-PLATTE-GOSHEN-
CHEYENNE FOOTHILLS-PINE BLUFFS-
INCLUDING THE CITIES OF...LUSK...LARAMIE...BUFORD...HORSE CREEK...
WHEATLAND...GUERNSEY...TORRINGTON...CHEYENNE...PINE BLUFFS
803 PM MST SUN DEC 17 2006

...SNOW ADVISORY HAS EXPIRED...

THE SNOW ADVISORY IS NO LONGER IN EFFECT. AREAS OF LIGHT SNOW OR 
FLURRIES WILL LINGER THE REST OF THIS EVENING...WITH LITTLE OR NO 
ADDITIONAL SNOWFALL.

MOTORISTS SHOULD STILL USE CAUTION TRAVELING THE REST OF TONIGHT AS 
ROADS WILL BE SNOWPACKED AND SLICK.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
924 PM MST FRI DEC 15 2006

.DISCUSSION...00Z MODEL RUNS CONTINUE TO FOCUS ON THE WEST PART OF
THE CWA INITIALLY FOR SNOWFALL SATURDAY THROUGH SUNDAY.  THE SHORTWAVE
TROUGH THAT WILL BE AFFECTING THE REGION IS JUST OFF THE OACIFIC
NORTHWEST THIS EVENING.  THE FEATURE MOVES INLAND AND FINALLY OVER
THE ROCKIES ON SUNDAY.  FAST SOUTHWEST WIND FLOW ALOFT WAS AHEAD
OF THE SHORTWAVE TROUGH OVER THE CWA.  THE 300 MB JET WAS TO THE
NORTH AND WEST OF THE CWA THIS EVENING AND SHOULD SAG SOUTH THROUGH
SUNDAY...PLACING THE CWA IN A FAVORABLE LOCATION FOR LIFT FROM THE
JET.  IN ADDITION...FRONTOGENSIS MAINLY AT 600 MB AND LOWER FORMS
OVER MAINLY THE NORTHWEST HALF OF THE CWA ON SATURDAY AFTERNOON.
CYCLOGENESIS SHOULD ALSO TAKE PLACE TO OUR SOUTH ON SATURDAY AS THE
SHORTWAVE TROUGH APPROACHES THE REGION.  THE BEST LIFT WAS IN THE
SNOW GROWTH REGION AS WELL FOR SATURDAY AFTERNOON THROUGH SUNDAY...
ESPECIALLY IN THE NORRTHWEST PART OF THE CWA.  THE 00Z RUNS HAD MORE
QPF OVER THAT AREA THAN PREVIOUS RUNS.  CLOUDS WERE ALREADY ENAHNCING
UPSTREAM OVER NEVADA AND NORTHERN UTAH THIS EVENING WITH SNOW AREAS
INCREASING ON RADARS.  THE RECENT OBSERVATION AT KEVW INDICATED
MODERATE SNOWFALL.  SO AT THIS TIME...CONFIDENCE IS HIGHER FOR DECENT
SNOWFALL IN THE NORTHWEST PART OF THE CWA AND WILL GO AHEAD AND
UPGRADE THE WINTER STORM WATCH TO A WARNING FOR SATURDAY AFTERNOON
THROUGH SUNDAY.  FOR NOW WILL LEAVE THE REST OF THE WYOMING PART OF
THE CWA IN THE WATCH AS CONFIDENCE IS LOWER FOR THOSE AREAS FOR
SIGNIFICANT SNOWFALL.  FORECAST WAS UPDATED RECENTLY.

&&

.PREVIOUS DISCUSSION  (ISSUED AT 335 PM MST FRI DEC 15 2006)

SHORT TERM...TONIGHT THROUGH SUNDAY.

TONIGHT...SOUTHWESTERLY FLOW CONTINUES. COLD FRONTAL BAND/BAROCLINIC
BAND MOVES SOUTHEASTWARD INTO OUR WESTERN ZONES. THUS WILL HAVE
SCATTERED TO MODERATE CHANCES OF SNOW THERE...DRY ELSEWHERE.

SATURDAY...SNOW CHANCES INCREASE DRAMATICALLY ACROSS OUR WESTERN
ZONES IN THE AFTERNOON AS DEEP MOIST AIRMASS IS LIFTED BY
OROGRAPHICS...DYNAMICS AND ISENTROPIC (WARM AIR ADVECTION) PROCESSES
NICELY SEEN IN THE MID LEVELS. WILL GO WITH SNOW CHANCES WELL ABOVE
GUIDANCE BASED ON EXPERIENCE AND MODEL SOLUTIONS. HAVE DECIDED TO
HOIST A WINTER STORM WATCH FOR OUR WYOMING ZONES BEGINNING ACROSS
THE WESTERN ZONES AT NOON AND CONTINUING THROUGH SUNDAY. HIGHS FROM
THE MID 30S TO MID 40S.

SATURDAY NIGHT...BOTH NAM/GFS PORTRAY A LONG LIVED SNOWFALL EVENT
WITH DEEP MOIST ATMOSPHERE...AND DECENT LIFT GENERATED BY
OROGRAPHICS (SOUTHWESTERLY FLOW ALOFT)...WARM AIR PROCESSES NICELY
DEPICTED IN THE MID LEVELS (ISENTROPIC LIFT) AND MECHANICAL LIFT
(UPSLOPE). MID LEVEL TEMPERATURES WILL ALSO BE IN THE DECENT
DENDRITIC GROWTH LAYER (-12 TO -18C). WINTER STORM WATCH HAS BEEN
HOISTED FOR THE REMAINDER OF WYOMING ZONES FOR SATURDAY
NIGHT/SUNDAY. THIS EVENT HAS THE POTENTIAL TO PRODUCE COPIOUS
AMOUNTS OF SNOW...ESPECIALLY ACROSS THE MOUNTAINS. HAVE GONE WITH
SNOW CHANCES WELL ABOVE GUIDANCE BASED ON EXPERIENCE AND MODEL
TENDENCIES.

SUNDAY...UPPER TROUGH REMAINS ACROSS WESTERN WYOMING/WESTERN
COLORADO. ALTHOUGH BOTH NAM/GFS DEPICT LESS SATURATED ATMOSPHERE AND
DECREASE THE LIFT...SUSPECT DECENT LIFT WILL CONTINUE AND ATMOSPHERE
WILL BE MORE SATURATED THAN MODELS DEPICT...THUS HAVE GONE WITH HIGH
SNOW CHANCES...WELL ABOVE GUIDANCE POPS. MAXIMA IN THE TEENS AND 20S
PER CLOUD COVER AND 1000-500 MB THICKNESSES NEAR 5250 METERS.

LONG TERM...FOR MONDAY THROUGH FRIDAY...LAST FRAME OF NAM MATCHES
WELL WITH THE GFS FOR THE MONDAY TIMEFRAME INDICATING THAT THE MAIN
TROUGH RESPONSIBLE FOR THE WEEKEND SNOW WILL BECOME A STRONG CUTOFF
LOW IN THE FAR SW CONUS.  THIS WILL PULL THE ENERGY SOUTHWARD AND
CEASE THE STEADY PRECIP.  THE REGION WILL BE CAUGHT DIRECTLY IN THE
AXIS OF CONTRACTION BETWEEN THIS CUTOFF LOW AND ANOTHER TROUGH
EXTENDING FROM CENTRAL CANADA.  THIS WILL MAKE FOR A VERY TENUOUS
FORECAST PERIOD GIVEN THE COL REGION IS PRONE TO CLOUDINESS AND
UNPREDICTABLE WINDS.  ASSUMING A PERFECT BISECTION OF THE
CWA...WHICH ALL MODEL SUITES ARE SHOWING NOW...THE EASTERN ZONES
WOULD SEE SLIGHT UPSLOPE MAKING CLOUDS AND SCATTERED LIGHT SNOW A
POSSIBILITY...AND COOL TEMPS ALL AROUND.  HAVE INCREASED SKY COVER
FOR THIS PERIOD...BUT LAYING OFF POPS FOR NOW SINCE THE POPS ARE
IMPLIED BY ANECDOTAL EVIDENCE...NOT ACTUAL MODEL PROGS.  THE H5 LOW
WILL ACCELERATE EASTWARD ON WEDNESDAY DRAGGING A STRONG SFC LOW
DANGEROUSLY NORTH ENOUGH TO BRING UPSLOPE PRECIP TO THE PLAINS.  THE
12Z GFS HAS JUMPED CONSIDERABLY TOWARDS AN EVEN MORE NORTHERLY PATH
THAT WOULD BRING WIDESPREAD SNOW TO THE PLAINS...BUT THIS SOLUTION
IS AN OUTLIER...SO LEFT IT ALONE AS WELL.  ALL MODEL SUITES AGREE ON
STACKED HIGH PRESSURE BUILDING IN MIDWEEK WITH DOWNSLOPE FLOW AND
WARMER TEMPS.

&&

.AVIATION...CEILINGS AND VISIBILITIES LOWERING IN SNOW ACROSS
WESTERN ROUTES LATE TONIGHT AND SATURDAY AND ACROSS REST OF ROUTES
SATURDAY NIGHT AND SUNDAY.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...WINTER STORM WARNING FOR CARBON TO CONVERSE COUNTIES FROM NOON
     ON SATURDAY TO 5 PM SUNDAY. ZONES 59..61>64.
     WINTER STORM WATCH FOR THE REST OF SOUTHEAST WYOMING FROM 6 PM
     SATURDAY TO 5 PM SUNDAY. ZONES 60..56>70.
NE...NONE.

&&

WEILAND

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
306 PM MST FRI DEC 15 2006

WYZ059-061>064-162215-
CONVERSE-SOUTHWEST CARBON-NORTH CARBON-SNOWY RANGE-
NORTH LARAMIE RANGE-
306 PM MST FRI DEC 15 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WYOMING.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SNOW WILL DEVELOP LATE TONIGHT ACROSS MUCH OF CARBON AND CONVERSE
COUNTIES.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A WINTER STORM WATCH IS IN EFFECT FOR SATURDAY AFTERNOON THROUGH
SUNDAY. PLEASE SEE PRODUCT WWUS45 FOR MORE DETAILS. WIDESPREAD SNOW
WILL CONTINUE SATURDAY THROUGH SUNDAY WITH SIGNIFICANT ACCUMULATIONS
POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SNOWFALL AMOUNTS WOULD BE MOST APPRECIATED.

&&

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE

WYZ060-065>070-162215-
NIOBRARA-LARAMIE VALLEY-LARAMIE RANGE-PLATTE-GOSHEN-
CHEYENNE FOOTHILLS-PINE BLUFFS-
306 PM MST FRI DEC 15 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WYOMING.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A WINTER STORM WATCH IS IN EFFECT FOR SATURDAY NIGHT AND SUNDAY.
PLEASE SEE PRODUCT WWUS45 FOR MORE DETAILS. WIDESPREAD SNOW WILL
DEVELOP SATURDAY NIGHT AND CONTINUE ON SUNDAY. SIGNIFICANT
ACCUMULATIONS OF SNOW ARE POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SNOWFALL AMOUNTS WOULD BE MOST APPRECIATED.

&&

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE

NEZ001>003-019>021-054-055-162215-
SIOUX-DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-
CHEYENNE-
306 PM MST FRI DEC 15 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA
PANHANDLE.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

CHANCES FOR SNOW WILL INCREASE...ESPECIALLY SATURDAY NIGHT AND
SUNDAY. SIGNIFICANT SNOWFALL ACCUMULATIONS ARE POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SNOWFALL AMOUNTS WOULD BE MOST APPRECIATED.

&&

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE

RUBIN