Winter Storm Warning
Expiring:
12/23/2014 12:00am
Areas affected:
Boulder, CO; Clear Creek, CO; Jefferson, CO; Larimer, CO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
833 PM MST SAT DEC 20 2014
...SIGNIFICANT WINTER STORM ON THE WAY FOR THE NORTHERN AND
CENTRAL COLORADO MOUNTAINS...
.WIDESPREAD SNOW AND STRONG WINDS WILL DEVELOP IN THE MOUNTAINS
BY SUNDAY AFTERNOON...AND CONTINUE THROUGH SUNDAY NIGHT AND
MONDAY AS A POWERFUL AND MOIST PACIFIC JET STREAM PLOWS INTO THE
CENTRAL ROCKIES. THE WORST STORM CONDITIONS ARE ANTICIPATED TO
REACH THE NORTHERN AND CENTRAL MOUNTAINS INCLUDING THE I-70
CORRIDOR SUNDAY AFTERNOON. NEAR BLIZZARD CONDITIONS ARE EXPECTED
TO DEVELOP OVER THE HIGHER MOUNTAIN PASSES BY SUNDAY EVENING.
PEOPLE PLANNING TRAVEL IN THE COLORADO MOUNTAINS SUNDAY AFTERNOON
THROUGH MONDAY SHOULD SERIOUSLY CONSIDER ALTERING THEIR PLANS.
ROAD CLOSURES WILL BE POSSIBLE.
COZ031-033-034-211300-
/O.CON.KBOU.WS.W.0013.141221T1900Z-141223T0700Z/
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/
GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE
9000 FEET-
INCLUDING THE CITIES OF...
EAST SLOPES PARK AND NORTHERN GORE RANGES...GORE PASS...
RABBIT EARS PASS...CAMERON PASS...
LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE...
ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS...
BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE...
EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL...
INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS...
WILLIAMS FORK MOUNTAINS...WINTER PARK
833 PM MST SAT DEC 20 2014
...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON SUNDAY TO
MIDNIGHT MST MONDAY NIGHT...
* TIMING...PERIODS OF LIGHT SNOW WILL OCCUR TONIGHT THROUGH EARLY
SUNDAY MORNING. THEN...SNOW WILL QUICKLY INCREASE IN INTENSITY
BY NOON SUNDAY AND BECOME HEAVY SUNDAY AFTERNOON THROUGH SUNDAY
NIGHT. THE SNOW IS EXPECTED TO GRADUALLY DECREASE IN INTENSITY
MONDAY AND MONDAY NIGHT.
* SNOW ACCUMULATIONS...12 TO 24 INCHES WILL BE POSSIBLE WITH
HEAVIER AMOUNTS ON NORTHWEST FACING SLOPES.
* WIND/VISIBILITY...MOUNTAIN TOP WIND GUSTS UP TO 70 MPH WILL BE
POSSIBLE SUNDAY EVENING THROUGH MONDAY MORNING. THIS WILL CAUSE
SIGNIFICANT BLOWING AND DRIFTING SNOW. VISIBILITIES OVER THE
MOUNTAINS AND HIGHER PASSES MAY FALL TO NEAR ZERO AT TIMES.
* IMPACTS...DIFFICULT TRAVEL CONDITIONS WITH SNOW PACKED ROADS AND
POOR VISIBILITIES WILL DEVELOP BY SUNDAY AFTERNOON. ROAD
CLOSURES ARE POSSIBLE. CHAIN LAWS WILL LIKELY BE REQUIRED FOR
SEMI-TRAILERS AND BUSES TO TRAVEL OVER HIGHER MOUNTAIN PASSES.
AVOID TRAVEL IN THE COLORADO HIGH COUNTRY SUNDAY AFTERNOON
THROUGH MONDAY IF POSSIBLE.
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 OR IMPOSSIBLE.
ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA
FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN
EMERGENCY.

Winter Storm Warning
Expiring:
12/23/2014 12:00am
Areas affected:
Boulder, CO; Clear Creek, CO; Jefferson, CO; Larimer, CO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
833 PM MST SAT DEC 20 2014
...SIGNIFICANT WINTER STORM ON THE WAY FOR THE NORTHERN AND
CENTRAL COLORADO MOUNTAINS...
.WIDESPREAD SNOW AND STRONG WINDS WILL DEVELOP IN THE MOUNTAINS
BY SUNDAY AFTERNOON...AND CONTINUE THROUGH SUNDAY NIGHT AND
MONDAY AS A POWERFUL AND MOIST PACIFIC JET STREAM PLOWS INTO THE
CENTRAL ROCKIES. THE WORST STORM CONDITIONS ARE ANTICIPATED TO
REACH THE NORTHERN AND CENTRAL MOUNTAINS INCLUDING THE I-70
CORRIDOR SUNDAY AFTERNOON. NEAR BLIZZARD CONDITIONS ARE EXPECTED
TO DEVELOP OVER THE HIGHER MOUNTAIN PASSES BY SUNDAY EVENING.
PEOPLE PLANNING TRAVEL IN THE COLORADO MOUNTAINS SUNDAY AFTERNOON
THROUGH MONDAY SHOULD SERIOUSLY CONSIDER ALTERING THEIR PLANS.
ROAD CLOSURES WILL BE POSSIBLE.
COZ031-033-034-211300-
/O.CON.KBOU.WS.W.0013.141221T1900Z-141223T0700Z/
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/
GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE
9000 FEET-
INCLUDING THE CITIES OF...
EAST SLOPES PARK AND NORTHERN GORE RANGES...GORE PASS...
RABBIT EARS PASS...CAMERON PASS...
LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE...
ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS...
BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE...
EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL...
INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS...
WILLIAMS FORK MOUNTAINS...WINTER PARK
833 PM MST SAT DEC 20 2014
...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON SUNDAY TO
MIDNIGHT MST MONDAY NIGHT...
* TIMING...PERIODS OF LIGHT SNOW WILL OCCUR TONIGHT THROUGH EARLY
SUNDAY MORNING. THEN...SNOW WILL QUICKLY INCREASE IN INTENSITY
BY NOON SUNDAY AND BECOME HEAVY SUNDAY AFTERNOON THROUGH SUNDAY
NIGHT. THE SNOW IS EXPECTED TO GRADUALLY DECREASE IN INTENSITY
MONDAY AND MONDAY NIGHT.
* SNOW ACCUMULATIONS...12 TO 24 INCHES WILL BE POSSIBLE WITH
HEAVIER AMOUNTS ON NORTHWEST FACING SLOPES.
* WIND/VISIBILITY...MOUNTAIN TOP WIND GUSTS UP TO 70 MPH WILL BE
POSSIBLE SUNDAY EVENING THROUGH MONDAY MORNING. THIS WILL CAUSE
SIGNIFICANT BLOWING AND DRIFTING SNOW. VISIBILITIES OVER THE
MOUNTAINS AND HIGHER PASSES MAY FALL TO NEAR ZERO AT TIMES.
* IMPACTS...DIFFICULT TRAVEL CONDITIONS WITH SNOW PACKED ROADS AND
POOR VISIBILITIES WILL DEVELOP BY SUNDAY AFTERNOON. ROAD
CLOSURES ARE POSSIBLE. CHAIN LAWS WILL LIKELY BE REQUIRED FOR
SEMI-TRAILERS AND BUSES TO TRAVEL OVER HIGHER MOUNTAIN PASSES.
AVOID TRAVEL IN THE COLORADO HIGH COUNTRY SUNDAY AFTERNOON
THROUGH MONDAY IF POSSIBLE.
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 OR IMPOSSIBLE.
ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA
FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN
EMERGENCY.

Winter Storm Warning
Expiring:
12/23/2014 12:00am
Areas affected:
Boulder, CO; Clear Creek, CO; Jefferson, CO; Larimer, CO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
833 PM MST SAT DEC 20 2014
...SIGNIFICANT WINTER STORM ON THE WAY FOR THE NORTHERN AND
CENTRAL COLORADO MOUNTAINS...
.WIDESPREAD SNOW AND STRONG WINDS WILL DEVELOP IN THE MOUNTAINS
BY SUNDAY AFTERNOON...AND CONTINUE THROUGH SUNDAY NIGHT AND
MONDAY AS A POWERFUL AND MOIST PACIFIC JET STREAM PLOWS INTO THE
CENTRAL ROCKIES. THE WORST STORM CONDITIONS ARE ANTICIPATED TO
REACH THE NORTHERN AND CENTRAL MOUNTAINS INCLUDING THE I-70
CORRIDOR SUNDAY AFTERNOON. NEAR BLIZZARD CONDITIONS ARE EXPECTED
TO DEVELOP OVER THE HIGHER MOUNTAIN PASSES BY SUNDAY EVENING.
PEOPLE PLANNING TRAVEL IN THE COLORADO MOUNTAINS SUNDAY AFTERNOON
THROUGH MONDAY SHOULD SERIOUSLY CONSIDER ALTERING THEIR PLANS.
ROAD CLOSURES WILL BE POSSIBLE.
COZ031-033-034-211300-
/O.CON.KBOU.WS.W.0013.141221T1900Z-141223T0700Z/
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/
GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE
9000 FEET-
INCLUDING THE CITIES OF...
EAST SLOPES PARK AND NORTHERN GORE RANGES...GORE PASS...
RABBIT EARS PASS...CAMERON PASS...
LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE...
ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS...
BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE...
EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL...
INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS...
WILLIAMS FORK MOUNTAINS...WINTER PARK
833 PM MST SAT DEC 20 2014
...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON SUNDAY TO
MIDNIGHT MST MONDAY NIGHT...
* TIMING...PERIODS OF LIGHT SNOW WILL OCCUR TONIGHT THROUGH EARLY
SUNDAY MORNING. THEN...SNOW WILL QUICKLY INCREASE IN INTENSITY
BY NOON SUNDAY AND BECOME HEAVY SUNDAY AFTERNOON THROUGH SUNDAY
NIGHT. THE SNOW IS EXPECTED TO GRADUALLY DECREASE IN INTENSITY
MONDAY AND MONDAY NIGHT.
* SNOW ACCUMULATIONS...12 TO 24 INCHES WILL BE POSSIBLE WITH
HEAVIER AMOUNTS ON NORTHWEST FACING SLOPES.
* WIND/VISIBILITY...MOUNTAIN TOP WIND GUSTS UP TO 70 MPH WILL BE
POSSIBLE SUNDAY EVENING THROUGH MONDAY MORNING. THIS WILL CAUSE
SIGNIFICANT BLOWING AND DRIFTING SNOW. VISIBILITIES OVER THE
MOUNTAINS AND HIGHER PASSES MAY FALL TO NEAR ZERO AT TIMES.
* IMPACTS...DIFFICULT TRAVEL CONDITIONS WITH SNOW PACKED ROADS AND
POOR VISIBILITIES WILL DEVELOP BY SUNDAY AFTERNOON. ROAD
CLOSURES ARE POSSIBLE. CHAIN LAWS WILL LIKELY BE REQUIRED FOR
SEMI-TRAILERS AND BUSES TO TRAVEL OVER HIGHER MOUNTAIN PASSES.
AVOID TRAVEL IN THE COLORADO HIGH COUNTRY SUNDAY AFTERNOON
THROUGH MONDAY IF POSSIBLE.
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 OR IMPOSSIBLE.
ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA
FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN
EMERGENCY.

Winter Storm Warning
Expiring:
12/23/2014 12:00am
Areas affected:
Boulder, CO; Clear Creek, CO; Jefferson, CO; Larimer, CO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
833 PM MST SAT DEC 20 2014
...SIGNIFICANT WINTER STORM ON THE WAY FOR THE NORTHERN AND
CENTRAL COLORADO MOUNTAINS...
.WIDESPREAD SNOW AND STRONG WINDS WILL DEVELOP IN THE MOUNTAINS
BY SUNDAY AFTERNOON...AND CONTINUE THROUGH SUNDAY NIGHT AND
MONDAY AS A POWERFUL AND MOIST PACIFIC JET STREAM PLOWS INTO THE
CENTRAL ROCKIES. THE WORST STORM CONDITIONS ARE ANTICIPATED TO
REACH THE NORTHERN AND CENTRAL MOUNTAINS INCLUDING THE I-70
CORRIDOR SUNDAY AFTERNOON. NEAR BLIZZARD CONDITIONS ARE EXPECTED
TO DEVELOP OVER THE HIGHER MOUNTAIN PASSES BY SUNDAY EVENING.
PEOPLE PLANNING TRAVEL IN THE COLORADO MOUNTAINS SUNDAY AFTERNOON
THROUGH MONDAY SHOULD SERIOUSLY CONSIDER ALTERING THEIR PLANS.
ROAD CLOSURES WILL BE POSSIBLE.
COZ031-033-034-211300-
/O.CON.KBOU.WS.W.0013.141221T1900Z-141223T0700Z/
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/
GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE
9000 FEET-
INCLUDING THE CITIES OF...
EAST SLOPES PARK AND NORTHERN GORE RANGES...GORE PASS...
RABBIT EARS PASS...CAMERON PASS...
LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE...
ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS...
BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE...
EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL...
INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS...
WILLIAMS FORK MOUNTAINS...WINTER PARK
833 PM MST SAT DEC 20 2014
...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON SUNDAY TO
MIDNIGHT MST MONDAY NIGHT...
* TIMING...PERIODS OF LIGHT SNOW WILL OCCUR TONIGHT THROUGH EARLY
SUNDAY MORNING. THEN...SNOW WILL QUICKLY INCREASE IN INTENSITY
BY NOON SUNDAY AND BECOME HEAVY SUNDAY AFTERNOON THROUGH SUNDAY
NIGHT. THE SNOW IS EXPECTED TO GRADUALLY DECREASE IN INTENSITY
MONDAY AND MONDAY NIGHT.
* SNOW ACCUMULATIONS...12 TO 24 INCHES WILL BE POSSIBLE WITH
HEAVIER AMOUNTS ON NORTHWEST FACING SLOPES.
* WIND/VISIBILITY...MOUNTAIN TOP WIND GUSTS UP TO 70 MPH WILL BE
POSSIBLE SUNDAY EVENING THROUGH MONDAY MORNING. THIS WILL CAUSE
SIGNIFICANT BLOWING AND DRIFTING SNOW. VISIBILITIES OVER THE
MOUNTAINS AND HIGHER PASSES MAY FALL TO NEAR ZERO AT TIMES.
* IMPACTS...DIFFICULT TRAVEL CONDITIONS WITH SNOW PACKED ROADS AND
POOR VISIBILITIES WILL DEVELOP BY SUNDAY AFTERNOON. ROAD
CLOSURES ARE POSSIBLE. CHAIN LAWS WILL LIKELY BE REQUIRED FOR
SEMI-TRAILERS AND BUSES TO TRAVEL OVER HIGHER MOUNTAIN PASSES.
AVOID TRAVEL IN THE COLORADO HIGH COUNTRY SUNDAY AFTERNOON
THROUGH MONDAY IF POSSIBLE.
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 OR IMPOSSIBLE.
ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA
FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN
EMERGENCY.