Alert archive / Wyoming / Winter Storm Warnings in 2011

Winter Storm Warning 4, NWS Cheyenne, WY

February 5, 20114 counties in Wyoming

NWS Cheyenne, WY issued this winter storm warning at Feb 5, 2011, 8:38 AM MST for 4 counties in Wyoming. It was in force for 19 hr. 21 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 5, 2011, 8:38 AM MST (15:38 UTC)
Expired
Feb 6, 2011, 3:10 AM MST
In force
19 hr
Issued by
NWS Cheyenne, WY

Counties Albany County, WY, Carbon County, WY, Converse County, WY, Platte County, WY

The radar

The Cheyenne radar (KCYS), 134 km from the middle of the area, began a volume at 15:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Feb 5, 2:00 PM MSTSNOW 1.2Crow Creek, WYTHIS IS FROM 8 AM TO 2 PM. SEW 0.1. RATIO 12-1. THE STORM TOTAL SINCE THE 4TH AT 7 AM IS 4.2 INCHES.
Feb 5, 2:00 PM MSTSNOW 1.5N Battle Mountain, WYTHIS IS FOM 8 AM TO 2 PM. SWE 0.1. RATIO 12-1. STORM TOTAL FROM THE 4TH AT 7 AM IS 1.5 INCHES.
Feb 5, 2:00 PM MSTSNOW 1.5Old Battle, WYTHIS IS FROM 8 AM TO 2 PM. SWE 0.1. RATIO 15-1. THE STORM TOTAL SINCE THE 4TH AT 7 AM IS 16.5 INCHES.
Feb 5, 2:00 PM MSTSNOW 2.5Laprele Creek, WYTHIS IS FROM 8 AM TO 2 PM. SWE 0.2. RATIO 12-1. STORM TOTAL SINCE THE 4TH AT 7 AM IS 5.5 INCHES.
Feb 5, 2:00 PM MSTSNOW 2.5Sage Creek Basin, WYSWE 0.2. RATIO 12-1. STORM TOTAL SINCE THE 4TH AT 7 AM IS 3.5 INCES.
Feb 5, 2:00 PM MSTSNOW 2.5Windy Peak, WYTHIS IS FROM 8 AM TO 2 PM. SWE 0.2. RATIO 12-1. STORM TOTAL SINCE THE 4TH AT 7 AM IS 5.5 INCHES.
Feb 5, 2:00 PM MSTSNOW 3Brooklyn Lake, WYHTIS IS FROM 8AM TO 2 PM. SWE 0.2. RATIO 15-1. STORM TOTAL SINCE THE 4TH AT 7 AM IS 15 INCHES.
Feb 5, 2:00 PM MSTSNOW 3Divide Peak, WYSWE 0.2. RATIO 15-1. THE 3 INCHES IS FROM 8 AM TO 2 PM. THE STORM TOTAL SINCE THE 4TH AT 7AM IS 6.0 INCHES.
Feb 5, 2:00 PM MSTSNOW 3N North French Creek, WYTHIS IS FROM 8 AM TO 2 PM. SWE 0.2. RATIO 15-1. THE STORM TOTAL SINCE THE 4TH AT 7 AM IS 18.0 INCHES.
Feb 5, 2:00 PM MSTSNOW 3Webber Springs, WYTHIS IS FROM 8 AM TO 2 PM. SWE 0.2. RATIO 15-1. THE STORM TOTAL SINCE THE 4TH AT 7 AM IS 9.0 INCHES.
Feb 5, 2:00 PM MSTSNOW 4.5N Sand Lake, WYTHIS IS FROM 8 AM TO 2 PM. SWE 0.3. RATIO 15 -1. THE STORM TOTAL SINCE THE 4TH AT 7 AM IS 15 INCHES.
Feb 5, 2:00 PM MSTSNOW 4.5South Brush Creek, WYTHIS IS FROM 8 AM TO 2 PM. SWE 0.3. RATION 15-1. THE STORM TOTAL SINCE THE 4TH AT 7 AM IS 13.5 INCHES.
Feb 5, 2:20 PM MSTSNOW 1Rawlins, WYWAS NOT SNOWING AT THAT TIME.
Feb 5, 2:24 PM MSTSNOW 3Saratoga, WYSTILL SNOWING LIGHTLY.
Feb 5, 2:33 PM MSTSNOW 2Elk Mountain, WY2 INCHES THROUGH 10 AM HEN NO SNOW.
Feb 5, 2:34 PM MSTSNOW 3.8Baggs, WYNOW SNOW SINCE 1 PM.
Feb 5, 2:40 PM MSTSNOW 1Medicine Bow, WYNOT SNOWING NOW.
Feb 5, 2:48 PM MSTSNOW 1.54 N Centennial, WYSNOW STOPPED AT THAT TIME.
Feb 5, 2:50 PM MSTSNOW 435 W Laramie, WYSNOW TODAY 3 TO 4 INCHES. 18 INCHES ON TOP.
Feb 5, 2:53 PM MSTSNOW 135 Nw Laramie, WY
Feb 5, 9:16 PM MSTSNOW 1Laramie, WYMOST AMOUNTS IN TOWN WERE BETWEEN ONE HALF AND ONE INCH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 3.6 hours before the alert went out and 239 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Riverton, WY at 12:00Z on 2011-02-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2011-02-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 190 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1761 m above ground
0-6 km bulk shear
80 kt
0-1 km storm-relative helicity
190 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

528 
WWUS45 KCYS 051538
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
838 AM MST SAT FEB 5 2011

...LONG DURATION HEAVY SNOWFALL EVENT EXPECTED THROUGH MONDAY
NIGHT...

.A SERIES OF WEATHER DISTURBANCES ALONG WITH MOIST NORTHWEST FLOW
ALOFT WILL PRODUCE A LONG DURATION HEAVY SNOWFALL EVENT THROUGH
MONDAY NIGHT ACROSS THE NORTHERN LARAMIE...SNOWY AND SIERRA MADRE
RANGES. SNOW WILL DECREASE IN AREAL COVERAGE AND INTENSITY LATE
TONIGHT THROUGH SUNDAY EVENING...THEN SNOW COVERAGE AND INTENSITY
WILL INCREASE AGAIN LATE SUNDAY NIGHT THROUGH MONDAY NIGHT.

WYZ112-114-060000-
/O.UPG.KCYS.WW.Y.0004.000000T0000Z-110206T0600Z/
/O.NEW.KCYS.WS.W.0004.110205T1538Z-110208T1300Z/
SIERRA MADRE RANGE-SNOWY RANGE-
INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING
838 AM MST SAT FEB 5 2011

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM MST TUESDAY...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT UNTIL 6 AM MST
TUESDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.

* TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE THROUGH THIS
  EVENING. SNOW WILL THEN DECREASE IN AREAL COVERAGE AND INTENSITY
  THROUGH SUNDAY EVENING...BEFORE INCREASING IN AREAL COVERAGE AND
  INTENSITY LATE SUNDAY NIGHT THROUGH MONDAY NIGHT.

* TOTAL SNOW ACCUMULATIONS...20 TO 30 INCHES. LOCALLY HIGHER
  AMOUNTS ON NORTHWEST FACING SLOPES.

* WINDS/VISIBILITIES...WEST WINDS 20 TO 35 MPH WITH GUSTS TO 50
  MPH WILL PRODUCE BLOWING AND DRIFTING SNOW AND VISIBILITIES NEAR
  ZERO AT TIMES...ESPECIALLY SUNDAY NIGHT AND MONDAY.

* IMPACTS...HEAVY SNOW ALONG WITH SIGNIFICANT BLOWING SNOW WILL
  IMPACT TRAVEL WITH ROADS BECOMING SNOWPACKED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW 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.

&&

$$

WYZ103-060000-
/O.NEW.KCYS.WS.W.0004.110205T1538Z-110208T1300Z/
NORTH LARAMIE RANGE-
838 AM MST SAT FEB 5 2011

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM MST TUESDAY...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT UNTIL 6 AM MST
TUESDAY.

* TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE THROUGH THIS
  EVENING. SNOW WILL THEN DECREASE IN AREAL COVERAGE AND INTENSITY
  THROUGH SUNDAY EVENING...BEFORE INCREASING IN AREAL COVERAGE AND
  INTENSITY LATE SUNDAY NIGHT THROUGH MONDAY NIGHT.

* TOTAL SNOW ACCUMULATIONS...15 TO 20 INCHES. LOCALLY HIGHER
  AMOUNTS ON NORTHWEST FACING SLOPES.

* WINDS/VISIBILITIES...WEST WINDS 20 TO 35 MPH WITH GUSTS TO 50
  MPH WILL PRODUCE BLOWING AND DRIFTING SNOW AND VISIBILITIES NEAR
  ZERO AT TIMES...ESPECIALLY SUNDAY NIGHT AND MONDAY.

* IMPACTS...HEAVY SNOW ALONG WITH SIGNIFICANT BLOWING SNOW WILL
  IMPACT TRAVEL WITH ROADS BECOMING SNOWPACKED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW 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.

&&

$$

RUBIN/CLAYCOMB
4 follow-up statements
230 
WWUS45 KCYS 051824
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
1124 AM MST SAT FEB 5 2011

...LONG DURATION HEAVY SNOWFALL EVENT EXPECTED THROUGH MONDAY
NIGHT...

.A SERIES OF WEATHER DISTURBANCES ALONG WITH MOIST NORTHWEST FLOW
ALOFT WILL PRODUCE A LONG DURATION HEAVY SNOWFALL EVENT THROUGH
MONDAY NIGHT ACROSS THE NORTHERN LARAMIE...SNOWY AND SIERRA MADRE
RANGES. SNOW WILL DECREASE IN AREAL COVERAGE AND INTENSITY LATE
TONIGHT THROUGH SUNDAY EVENING...THEN SNOW COVERAGE AND INTENSITY
WILL INCREASE AGAIN LATE SUNDAY NIGHT THROUGH MONDAY NIGHT.

WYZ103-112-114-060000-
/O.CON.KCYS.WS.W.0004.000000T0000Z-110208T1300Z/
NORTH LARAMIE RANGE-SIERRA MADRE RANGE-SNOWY RANGE-
INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING
1124 AM MST SAT FEB 5 2011

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST TUESDAY. 

* TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE THROUGH THIS 
  EVENING. SNOW WILL THEN DECREASE IN AREAL COVERAGE AND 
  INTENSITY THROUGH SUNDAY EVENING...BEFORE INCREASING IN AREAL 
  COVERAGE AND INTENSITY LATE SUNDAY NIGHT THROUGH MONDAY NIGHT. 

* TOTAL SNOW ACCUMULATIONS...20 TO 30 INCHES ACROSS THE SNOWY AND
  SIERRA MADRE RANGES...WITH 15 TO 20 INCHES ACROSS THE NORTHERN
  LARAMIE RANGE. LOCALLY HIGHER AMOUNTS ON NORTHWEST FACING
  SLOPES.

* WINDS/VISIBILITIES...WEST WINDS 20 TO 35 MPH WITH GUSTS TO 50 
  MPH WILL PRODUCE BLOWING AND DRIFTING SNOW AND VISIBILITIES 
  NEAR ZERO AT TIMES...ESPECIALLY SUNDAY NIGHT AND MONDAY. 

* IMPACTS...HEAVY SNOW ALONG WITH SIGNIFICANT BLOWING SNOW WILL 
  IMPACT TRAVEL WITH ROADS BECOMING SNOWPACKED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW 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.

&&

$$

WYZ104-105-109>111-113-115-060000-
/O.NEW.KCYS.WW.Y.0005.110205T1824Z-110206T1300Z/
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN-
CENTRAL CARBON COUNTY-NORTH SNOWY RANGE FOOTHILLS-
SOUTHWEST CARBON COUNTY-UPPER NORTH PLATTE RIVER BASIN-
LARAMIE VALLEY-
INCLUDING THE CITIES OF...MUDDY GAP...MEDICINE BOW...RAWLINS...
SINCLAIR...HANNA...ARLINGTON...ELK MOUNTAIN...BAGGS...DIXON...
SARATOGA...ENCAMPMENT...RIVERSIDE...LARAMIE
1124 AM MST SAT FEB 5 2011

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MST SUNDAY...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 6 AM MST
SUNDAY.

* TIMING...SNOW...MODERATE TO HEAVY AT TIMES...WILL CONTINUE
  THROUGH THIS EVENING...THEN DECREASE IN COVERAGE AND INTENSITY
  AFTER MIDNIGHT TONIGHT.

* TOTAL SNOW ACCUMULATIONS...3 TO 6 INCHES...WITH LOCALLY HIGHER
  AMOUNTS ON NORTHWEST FACING HILLS AND SLOPES.

* WINDS/VISIBILITIES...WEST TO NORTHWEST 10 TO 25 MPH WITH GUSTS
  TO 35 MPH. VISIBILITIES PRIMARILY 1 TO 3 MILES...WITH 
  OCCASIONAL VISIBILITIES BELOW ONE MILE IN MODERATE TO HEAVY
  SNOW.

* IMPACTS...ROADS WILL BECOME SNOWPACKED AND ICY IN SPOTS IMPACTING
  TRAVEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

RUBIN
725 
WWUS45 KCYS 052245
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
345 PM MST SAT FEB 5 2011

...LONG DURATION SNOWFALL EVENT EXPECTED THROUGH MONDAY NIGHT...

.A SERIES OF WEATHER DISTURBANCES ALONG WITH MOIST NORTHWEST FLOW
ALOFT WILL PRODUCE A LONG DURATION SNOWFALL EVENT THROUGH MONDAY
NIGHT ACROSS THE NORTHERN LARAMIE...SNOWY AND SIERRA MADRE RANGES.

SNOW WILL DECREASE IN AREAL COVERAGE AND INTENSITY LATE TONIGHT
THROUGH SUNDAY EVENING...THEN SNOW COVERAGE AND INTENSITY WILL
INCREASE AGAIN LATE SUNDAY NIGHT THROUGH MONDAY NIGHT...WITH
WIDESPREAD SNOW AND BLOWING SNOW LATE SUNDAY NIGHT THROUGH MONDAY
NIGHT AS WINDS INCREASE.

WYZ103-112-114-061200-
/O.CON.KCYS.WS.W.0004.000000T0000Z-110208T1300Z/
NORTH LARAMIE RANGE-SIERRA MADRE RANGE-SNOWY RANGE-
INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING
345 PM MST SAT FEB 5 2011

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST TUESDAY. 

* TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE THROUGH THIS 
  EVENING. SNOW WILL THEN DECREASE IN AREAL COVERAGE AND 
  INTENSITY THROUGH SUNDAY EVENING...BEFORE INCREASING IN AREAL 
  COVERAGE AND INTENSITY LATE SUNDAY NIGHT THROUGH MONDAY NIGHT. 

* TOTAL SNOW ACCUMULATIONS...20 TO 30 INCHES ACROSS THE SNOWY AND
  SIERRA MADRE RANGES...WITH 12 TO 18 INCHES ACROSS THE NORTHERN
  LARAMIE RANGE. LOCALLY HIGHER AMOUNTS ON NORTHWEST FACING
  SLOPES.

* WINDS/VISIBILITIES...WEST WINDS 15 TO 30 MPH WITH GUSTS TO 45
  MPH WILL PRODUCE BLOWING AND DRIFTING SNOW AND VISIBILITIES NEAR
  ZERO AT TIMES...ESPECIALLY SUNDAY NIGHT AND MONDAY...WHEN WINDS
  WILL INCREASE TO 25 TO 40 MPH WITH GUSTS TO 55 MPH.

* IMPACTS...HEAVY SNOW ALONG WITH SIGNIFICANT BLOWING SNOW WILL 
  IMPACT TRAVEL WITH ROADS BECOMING SNOWPACKED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW 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.

&&

$$

WYZ104-105-109>111-113-115-061200-
/O.CON.KCYS.WW.Y.0005.000000T0000Z-110206T1300Z/
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN-
CENTRAL CARBON COUNTY-NORTH SNOWY RANGE FOOTHILLS-
SOUTHWEST CARBON COUNTY-UPPER NORTH PLATTE RIVER BASIN-
LARAMIE VALLEY-
INCLUDING THE CITIES OF...MUDDY GAP...MEDICINE BOW...RAWLINS...
SINCLAIR...HANNA...ARLINGTON...ELK MOUNTAIN...BAGGS...DIXON...
SARATOGA...ENCAMPMENT...RIVERSIDE...LARAMIE
345 PM MST SAT FEB 5 2011

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
SUNDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST
SUNDAY. 

* TIMING...SNOW...MODERATE AT TIMES...WILL CONTINUE THROUGH THIS
  EVENING...THEN DECREASE IN COVERAGE AND INTENSITY AFTER MIDNIGHT
  TONIGHT.

* TOTAL SNOW ACCUMULATIONS...3 TO 6 INCHES...WITH LOCALLY HIGHER 
  AMOUNTS ON NORTHWEST FACING HILLS AND SLOPES. 

* WINDS/VISIBILITIES...WEST TO NORTHWEST 10 TO 25 MPH WITH GUSTS
  TO 35 MPH. VISIBILITIES 1 TO 3 MILES...WITH OCCASIONAL
  VISIBILITIES BELOW ONE MILE IN MODERATE.

* IMPACTS...ROADS WILL BECOME SNOWPACKED AND ICY IN SPOTS 
  IMPACTING TRAVEL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

RUBIN
451 
WWUS45 KCYS 060454
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
954 PM MST SAT FEB 5 2011

...LONG DURATION SNOWFALL EVENT EXPECTED THROUGH MONDAY NIGHT...

.A SERIES OF WEATHER DISTURBANCES ALONG WITH MOIST NORTHWEST FLOW
ALOFT WILL PRODUCE A LONG DURATION SNOWFALL EVENT THROUGH MONDAY
NIGHT ACROSS THE NORTHERN LARAMIE...SNOWY AND SIERRA MADRE
RANGES.

SNOW WILL DECREASE IN AREAL COVERAGE AND INTENSITY LATE TONIGHT
THROUGH SUNDAY EVENING...THEN SNOW COVERAGE AND INTENSITY WILL
INCREASE AGAIN LATE SUNDAY NIGHT THROUGH MONDAY NIGHT...WITH
WIDESPREAD SNOW AND BLOWING SNOW LATE SUNDAY NIGHT THROUGH MONDAY
NIGHT AS WINDS INCREASE.

WYZ104-105-109>111-113-115-060600-
/O.CAN.KCYS.WW.Y.0005.000000T0000Z-110206T1300Z/
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN-
CENTRAL CARBON COUNTY-NORTH SNOWY RANGE FOOTHILLS-
SOUTHWEST CARBON COUNTY-UPPER NORTH PLATTE RIVER BASIN-
LARAMIE VALLEY-
INCLUDING THE CITIES OF...MUDDY GAP...MEDICINE BOW...RAWLINS...
SINCLAIR...HANNA...ARLINGTON...ELK MOUNTAIN...BAGGS...DIXON...
SARATOGA...ENCAMPMENT...RIVERSIDE...LARAMIE
954 PM MST SAT FEB 5 2011

...WINTER WEATHER ADVISORY IS CANCELLED...

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

SNOWFALL INTENSITY OVER THE LOWER ELEVATIONS WEST OF THE LARAMIE
RANGE WILL CONTINUE TO DECREASE FOR THE REST OF TONIGHT. 
ADDITIONAL SNOWFALL AMOUNTS WILL BE BETWEEN ONE HALF INCH AND TWO
INCHES BY SUNRISE SUNDAY MORNING.  

SNOWFALL OVER THE AREA OVER THE PAST 24 HOURS HAS BEEN MAINLY
1 TO 2 INCHES...WITH 3 TO 4 INCHES IN SARATOGA.  

PERIODS OF SNOW SHOWERS WILL PERSIST THROUGH MONDAY OVER THIS
AREA. WESTERLY WINDS WILL INCREASE SUNDAY NIGHT WITH GUSTS UP
TO 55 MPH WHICH WILL CONTINUE THROUGH MONDAY. THEN SNOW WILL
BECOME MORE WIDESPREAD AND HEAVIER ONCE AGAIN MONDAY AFTERNOON
AND MONDAY NIGHT. 

$$

WYZ103-112-114-061200-
/O.CON.KCYS.WS.W.0004.000000T0000Z-110208T1300Z/
NORTH LARAMIE RANGE-SIERRA MADRE RANGE-SNOWY RANGE-
INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING
954 PM MST SAT FEB 5 2011

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST
TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST TUESDAY. 

* TIMING...THE SNOW WILL BE LIGHTER OVER THE SNOWY...SIERRA MADRE
  AND NORTHERN LARAMIE RANGES THROUGH SUNDAY EVENING. THE SNOW
  WILL INCREASE IN COVERAGE AND INTENSITY ONCE AGAIN LATER SUNDAY
  NIGHT AND CONTINUE THROUGH MONDAY NIGHT. WINDS WILL ALSO
  INCREASE SUNDAY NIGHT IN OPEN AREAS AND CONTINUE THROUGH MONDAY.

* TOTAL SNOW ACCUMULATIONS...20 TO 30 INCHES ACROSS THE SNOWY 
  AND SIERRA MADRE RANGES...WITH 12 TO 18 INCHES ACROSS THE 
  NORTHERN LARAMIE RANGE. LOCALLY HIGHER AMOUNTS ON NORTHWEST 
  FACING SLOPES. 

* WINDS/VISIBILITIES...WEST WINDS 15 TO 30 MPH WITH GUSTS TO 45 
  MPH WILL PRODUCE BLOWING AND DRIFTING SNOW AND VISIBILITIES 
  NEAR ZERO AT TIMES...ESPECIALLY SUNDAY NIGHT AND MONDAY...WHEN 
  WINDS WILL INCREASE TO 25 TO 40 MPH WITH GUSTS TO 55 MPH. 

* IMPACTS...HEAVY SNOW ALONG WITH SIGNIFICANT BLOWING SNOW WILL
  IMPACT TRAVEL WITH ROADS SNOWPACKED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW 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.

&&

$$

WEILAND
013 
WWUS45 KCYS 061010
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
310 AM MST SUN FEB 6 2011

...COLD AND SNOWY CONDITIONS TO CONTINUE THROUGH MONDAY NIGHT...

.A DISTURBANCE WILL MOVE ACROSS THE AREA TODAY WHICH WILL RESULT
IN WINDY CONDITIONS ALONG WITH PERIODS OF SNOW. THE MOST SNOWFALL
WILL BE IN THE SOUTHERN MOUNTAINS AS WELL AS THE NORTHERN LARAMIE
RANGE. A STRONGER STORM SYSTEM ALONG WITH A STRONG COLD FRONT WILL
MOVE ACROSS THE AREA FROM MONDAY AFTERNOON THROUGH MONDAY NIGHT.
THIS WILL RESULT IN MORE SNOW AND MUCH COLDER TEMPERATURES.

WYZ103-112-114-070015-
/O.CAN.KCYS.WS.W.0004.000000T0000Z-110208T1300Z/
/O.NEW.KCYS.WW.Y.0006.110206T1010Z-110207T0600Z/
/O.NEW.KCYS.WS.W.0005.110207T1900Z-110208T1300Z/
NORTH LARAMIE RANGE-SIERRA MADRE RANGE-SNOWY RANGE-
INCLUDING THE CITIES OF...CENTENNIAL...ALBANY...WOODS LANDING
310 AM MST SUN FEB 6 2011

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST THIS
EVENING...
...WINTER STORM WARNING IN EFFECT FROM NOON MONDAY TO 6 AM MST
TUESDAY...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER
STORM WARNING FOR MODERATE TO HEAVY SNOW AND COLD TEMPERATURES...
WHICH IS IN EFFECT FROM NOON MONDAY TO 6 AM MST TUESDAY. A WINTER
WEATHER ADVISORY HAS ALSO BEEN ISSUED. THIS WINTER WEATHER
ADVISORY IS FOR SNOW AND BLOWING SNOW AND IS IN EFFECT UNTIL 11 PM
MST THIS EVENING.

* TIMING...THE FIRST STORM SYSTEM WILL MOVE ACROSS THE AREA TODAY
  AND WILL AFFECT THE AREA UNTIL THIS EVENING. THE STRONGER SECOND SYSTEM
  WILL AFFECT THE AREA FROM NOON MONDAY THROUGH 6 AM TUESDAY.

* TOTAL SNOW ACCUMULATIONS...TOTAL SNOW ACCUMULATIONS FOR THE
  FIRST STORM SYSTEM WILL BE FROM 4 TO 7 INCHES BY 11 PM TONIGHT.
  ADDITIONAL SNOW ACCUMULATIONS FOR THE SECOND SYSTEM WILL BE
  FROM 9 TO 14 INCHES WHICH WILL OCCUR BETWEEN MONDAY AFTERNOON
  AND TUESDAY MORNING.

* WINDS/VISIBILITIES...WEST WINDS 20 TO 30 MPH WITH GUSTS TO 45
  MPH WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW TODAY INTO
  THIS EVENING. VISIBILITIES WILL BE REDUCED TO LESS THAN A MILE
  AT TIMES. STRONG WINDS WILL ALSO OCCUR ON MONDAY WHICH WILL
  CONTINUE THE BLOWING AND DRIFTING SNOW...HOWEVER WINDS ARE
  EXPECTED TO DROP OFF RAPIDLY MONDAY NIGHT.

* IMPACTS...HEAVY SNOW ALONG WITH SIGNIFICANT BLOWING SNOW WILL
  IMPACT TRAVEL WITH ROADS SNOWPACKED OVER THE NEXT FEW DAYS.
  PERSONS PLANNING TO TRAVEL ACROSS THE AREA...ESPECIALLY MONDAY
  AFTERNOON AND MONDAY NIGHT SHOULD BE AWARE OF THE POOR DRIVING
  CONDITIONS. CHECK THE LATEST ROAD AND TRAVEL INFORMATION BEFORE
  VENTURING OUT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW 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.

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

&&

$$
KMD

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 4, 8:43 PM MSTHigh Wind WarningCYSAlbany, Carbon, Laramie, Platte8 hr
Feb 5, 11:24 AM MSTWinter Weather AdvisoryCYSAlbany, Carbon11 hr

Nearby

Winter Storm Warnings in Wyoming, 2011Every winter storm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.