Winter Weather Warnings / Watches / Advisories
Issued by NWS Cheyenne, WY

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WWUS45 KCYS 202104
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
204 PM MST SAT DEC 20 2014

...THE COMBINATION OF HEAVY SNOW AND STRONG WINDS WILL AFFECT THE
SNOWY AND SIERRA MADRE MOUNTAINS LATE TONIGHT AND THE INTERSTATE
80 CORRIDOR FROM LARAMIE TO RAWLINS SUNDAY LATE MORNING THROUGH
MONDAY...

.VERY MOIST PACIFIC AIR COMBINED WITH STRONG WEST WINDS WILL SET
THE STAGE FOR A PROLONGED PERIOD OF HEAVY UPSLOPE SNOW FOR THE
SIERRA MADRE AND SNOWY RANGES. SNOW WILL BEGIN TO FALL TONIGHT
WITH SNOWFALL RATES INCREASING SUNDAY THROUGH MONDAY. SNOWFALL
TOTALS OF ONE TO TWO FEET WITH HIGHER AMOUNTS ON WEST AND
NORTHWEST FACING SLOPES ARE LIKELY DURING THIS PERIOD. THE
COMBINATION OF STRONG WINDS AND HEAVY SNOW WILL CREATE TREACHEROUS
TRAVEL CONDITIONS THROUGH AND AROUND THE MOUNTAINS.

WYZ112-114-211200-
/O.EXT.KCYS.WS.W.0016.141221T0700Z-141223T1200Z/
SIERRA MADRE RANGE-SNOWY RANGE-
INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING
204 PM MST SAT DEC 20 2014

...WINTER STORM WARNING NOW IN EFFECT FROM MIDNIGHT TONIGHT TO
5 AM MST TUESDAY...

* TIMING...SNOW WILL DEVELOP TONIGHT AND BECOME HEAVY SUNDAY
  THROUGH MONDAY.

* TOTAL SNOW ACCUMULATIONS...ONE TO TWO FEET WITH HIGHER AMOUNTS
  LIKELY ON WEST AND NORTHWEST FACING SLOPES.

* WINDS/VISIBILITY...SUSTAINED WEST WINDS WILL INCREASE TO 30 TO
  40 MPH WITH GUSTS TO 70 MPH. VISIBILITIES MAY BE REDUCED TO A
  QUARTER MILE IN FALLING AND BLOWING SNOW.

* IMPACTS...TRAVEL ALONG HIGHWAY 230 BETWEEN WOODS LANDING AND
  THE STATELINE...AND BETWEEN ENCAMPMENT AND THE STATELINE MAY
  BE IMPACTED BY THE WINTRY CONDITIONS. OUTDOOR ENTHUSIASTS
  PLANNING TO VENTURE OUT INTO THE HIGH COUNTRY WILL WANT TO
  EXERCISE EXTREME CAUTION SUNDAY THROUGH MONDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW AND STRONG WINDS MEANS
SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING.
SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL
DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP
AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE
OF AN EMERGENCY.

&&

$$

WYZ109-111-113-115-211200-
/O.NEW.KCYS.WS.A.0016.141221T1500Z-141222T1800Z/
CENTRAL CARBON COUNTY-SOUTHWEST CARBON COUNTY-
UPPER NORTH PLATTE RIVER BASIN-LARAMIE VALLEY-
INCLUDING THE CITIES OF...RAWLINS...SINCLAIR...HANNA...BAGGS...
DIXON...SARATOGA...ENCAMPMENT...RIVERSIDE...LARAMIE
204 PM MST SAT DEC 20 2014

...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY MORNING...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY MORNING.

* TIMING...VERY STRONG WINDS ARE EXPECTED TO BEGIN BY MID MORNING
  SUNDAY AND REMAIN STRONG THROUGH MONDAY MORNING.

* TOTAL SNOW ACCUMULATIONS...RAIN IS INITIALLY EXPECTED EARLY
  SUNDAY AFTERNOON...CHANGING TO ALL SNOW BY LATE AFTERNOON. SNOW
  COULD BECOME HEAVY SUNDAY EVENING INTO MONDAY MORNING. 4 TO 6
  INCHES OF SNOW AROUND THE SNOWY AND SIERRA MADRE RANGES INTO THE
  LARAMIE VALLEY ARE POSSIBLE.

* WINDS/VISIBILITY...COMBINATION OF VERY STRONG WINDS AND
  ACCUMULATING SNOW COULD LEAD TO AREAS OF SIGNIFICANTLY REDUCED
  VISIBILITIES ALONG WITH BLOWING AND DRIFTING SNOW. TRAVEL COULD
  BECOME HAZARDOUS BY MID SUNDAY AFTERNOON THROUGH MONDAY MORNING.

* IMPACTS...TRAVEL ALONG INTERSTATE 80 BETWEEN LARAMIE AND
  RAWLINS...ALONG WITH ADJACENT STATE HIGHWAYS IN CARBON AND
  ALBANY COUNTIES MAY BE IMPACTED BY THESE WINTRY CONDITIONS.
  THOSE WITH TRAVEL PLANS THROUGH SOUTHEAST WYOMING WILL WANT TO
  USE EXTREME CAUTION SUNDAY AND MONDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...BLOWING SNOW AND REDUCED VISIBILITIES THAT MAY IMPACT
TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$


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