Winter Weather Warnings / Watches / Advisories
Issued by NWS Denver/Boulder, CO

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WWUS45 KBOU 181620
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1020 AM MDT Thu May 18 2017

...HEAVY SNOW CONTINUE IN THE MOUNTAINS...NORTHERN FRONT RANGE
FOOTHILLS AND WESTERN PORTIONS OF THE I-25 CORRIDOR...

.A strong and slow moving spring storm will continue to drop
heavy snowfall over portions of north central and northeast
Colorado today through Friday morning. Snowfall will be especially
heavy in the Front Range foothills where snowfall rates of 2 to 3
inches per hour are likely.

In lower elevations, areas west of I-25 will also experience
periods of moderate to heavy snowfall through Friday morning with
snowfall rates of 1 to 2 inches per hour at times. East of the
I-25...snowfall rates and accumulations will be less and much of
what falls on paved surfaces today will either be slush or melt.
However tonight, precipitation will turn to all snow within the
I25 corridor and even farther out on the plains. Snowfall will
likely be heaviest near the foothills and on the Palmer Divide
creating hazardous driving conditions. The wet, heavy snowfall
will likely cause significant tree damage and create scattered
power outages. Snowfall should gradually taper off late on Friday
starting in areas south of I-70. Most if not all snow
accumulation in the area should end Friday night.


COZ038>041-190030-
/O.UPG.KBOU.WS.A.0013.170519T0000Z-170520T0000Z/
/O.EXB.KBOU.WS.W.0011.000000T0000Z-170519T2100Z/
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Including the cities of Fort Collins, Hereford, Loveland, Nunn,
Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton,
City of Denver, Denver International Airport, Highlands Ranch,
Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa,
and Larkspur
1020 AM MDT Thu May 18 2017

...WINTER STORM WARNING IN EFFECT UNTIL 3 PM MDT FRIDAY...

The National Weather Service in Denver has issued a Winter Storm
Warning for heavy snow, which is in effect until 3 PM MDT Friday.
The Winter Storm Watch is no longer in effect.

* TIMING...Snowfall moderate to heavy at times...especially in
  areas west of Interstate 25 and on the higher terrain of the
  Palmer Divide through Friday morning. The rain and snow mix
  roughly east of I-25 Denver should change over to all snow by
  late this afternoon with the arrival of colder air. Snowfall in
  this area could be moderate to heavy this time in the evening.

* SNOW ACCUMULATIONS...2 to 6 inches likely, with 8 to 12 inches
  near the foothills and possibly near 15 inches on the Palmer
  Divide.


* WIND/VISIBILITY...Visibility could fall below a quarter mile
  in heavy snow.

* IMPACTS...Wet snow may accumulate on leafed out trees,
  resulting in broken tree limbs and power outages. Some slush
  and snow accumulation will be possible on roads mainly near
  the Palmer Divide and Wyoming border, with slick and hazardous
  travel conditions.

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 very low and hazardous. If you
must travel...keep an extra flashlight... food...and water in
your vehicle in case of an emergency.

&&

$$

COZ034-036-190030-
/O.CON.KBOU.WS.W.0011.000000T0000Z-170520T0000Z/
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Including the cities of 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, Bailey, Central City,
Evergreen, Georgetown, Idaho Springs, and Westcreek
1020 AM MDT Thu May 18 2017

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

* TIMING...Moderate to heavy snowfall will continue through Friday
  Heaviest snowfall will shift to the northern foothills later
  today. Snowfall rates of 2 to 3 inches per hour are likely at
  times on east facing slopes. Snow will gradually taper off in
  intensity by Friday afternoon.

* SNOW ACCUMULATIONS...18 to 35 inches.

* WIND/VISIBILITY...Visibility will fall below a quarter mile in
  heavy snow.

* IMPACTS...Travel will be hazardous and slow at times due to
  snow and slush covered roads. Wet snow may accumulate on
  leafed out trees, resulting in broken tree limbs and power
  outages.

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.

&&

$$

COZ033-035-190030-
/O.CON.KBOU.WS.W.0011.000000T0000Z-170520T0000Z/
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
Larimer and Boulder Counties Between 6000 and 9000 Feet-
Including the cities of Cameron Pass,
Laramie and Medicine Bow Mountains, Rabbit Ears Range,
Rocky Mountain National Park, Willow Creek Pass, Estes Park,
Glendevey, Nederland, and Red Feather Lakes
1020 AM MDT Thu May 18 2017

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

* TIMING...Heavy snowfall will continue today and tonight, with
  snowfall rates to around 2 inches per hour on east facing slopes
  of the Front Range mountains. Snow should gradually taper off
  in intensity by Friday afternoon.

* SNOW ACCUMULATIONS...18 to 30 inches, with locally up to 40
  inches on east facing slopes above 9500 feet.

* WIND/VISIBILITY...Visibility will fall below a quarter mile in
  heavy snow.

* IMPACTS...Travel will be difficult if not impossible on high
  country roads due to the depth of snow. The wet, heavy snow
  accumulating on leafed out trees will likely result in numerous
  broken tree limbs and power outages. Auto accidents may also
  create serious slow downs and even temporary road closures.


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.

&&

$$

COZ032-190030-
/O.EXB.KBOU.WW.Y.0022.000000T0000Z-170519T1200Z/
Grand and Summit Counties Below 9000 Feet-
Including the cities of Dillon, Fraser, Granby, Grand Lake,
Hot Sulphur Springs, and Kremmling
1020 AM MDT Thu May 18 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT FRIDAY...

The National Weather Service in Denver has issued a Winter
Weather Advisory for snow, which is in effect until 6 AM MDT
Friday.

* TIMING...Snowfall, moderate at times, will continue through this
  evening. Expect snowfall to decrease in intensity early
  evening.

* SNOW ACCUMULATIONS...5 to 9 inches...heaviest near the mountain
  slopes.

* WIND/VISIBILITY...Visibility will fall to a quarter mile or
  less during periods of heavy snow.

* IMPACTS...Travel will be very difficult and slow at times due
  to snow and slush covered roads. Wet snow may accumulate on
  leafed out trees, resulting in broken tree limbs and power
  outages.

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.

&&

$$

COZ037-190030-
/O.EXT.KBOU.WW.Y.0022.000000T0000Z-170519T1200Z/
Central and Southeast Park County-
Including the cities of Fairplay, Hartsel, Lake George,
and South Park
1020 AM MDT Thu May 18 2017

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 AM MDT FRIDAY...

* TIMING...Snowfall, moderate at times, will continue through late
  this afternoon. Expect snowfall to decrease in intensity during
  the evening.

* SNOW ACCUMULATIONS...3 to 7 inches...the heavier amounts in
  northern and western Park county.

* WIND/VISIBILITY...Visibility will fall to a quarter mile or
  less during periods of heavy snow.

* IMPACTS...Travel will be very difficult and slow at times due to
  snow and slush covered roads. Wet snow may accumulate on leafed
  out trees, resulting in broken tree limbs and power outages.

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.

&&

$$
Baker


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