Winter Storm Warning 12, NWS Denver/Boulder, CO

447 
WWUS45 KBOU 011652
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1052 AM MDT Sun Oct 1 2017

...Wintry weather coming to the northern Colorado mountains 
tonight and Monday...

.A weather system being driven by a powerful Pacific jet stream 
will move over Colorado tonight and Monday bringing widespread 
precipitation to the north central Colorado mountains. Snow 
levels are expected to drop to 7,500 to 8,000 feet near the 
Wyoming border, and 8,500 to 9,000 feet along the I-70 Corridor 
by tonight. The storm system is expected to be moving out of the
state by Monday afternoon with snowfall rates decreasing at that
time.  

COZ031-033-020100-
/O.CON.KBOU.WS.W.0012.171001T1800Z-171003T0600Z/
West Jackson and West Grand Counties Above 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder 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, and Willow Creek Pass
1052 AM MDT Sun Oct 1 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
MONDAY NIGHT...

* TIMING...Rain and snow along with embedded thunderstorms will
  continue this afternoon and become heavier through tonight. Snow
  levels will lower to valley floors tonight. Precipitation 
  should decrease by Monday evening. 

* SNOW ACCUMULATIONS...8 to 16 inches with locally higher 
  amounts possible. 

* WIND/VISIBILITY...As low as one quarter mile during periods of 
  heavy snow. 

* IMPACTS...Travel conditions may be slow and hazardous this 
  afternoon through tonight and Monday. Areas of slush and snow 
  will likely develop on many mountain roads during the periods 
  of heavier snowfall. Hunters and other outdoor interests 
  should take note of this prolonged period of winter weather, 
  and be prepared for much colder temperatures and accumulating 
  snow. 

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.

&&

$$

COZ030-020100-
/O.UPG.KBOU.WS.A.0014.171002T0000Z-171003T0600Z/
/O.EXA.KBOU.WW.Y.0023.171002T0000Z-171003T0600Z/
Jackson County Below 9000 Feet-
Including the cities of Gould, North Park, Rand, Spicer, 
and Walden
1052 AM MDT Sun Oct 1 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
MIDNIGHT MDT MONDAY NIGHT...

The National Weather Service in Denver has issued a Winter
Weather Advisory for snow, which is in effect from 6 PM this 
evening to midnight MDT Monday night. The Winter Storm Watch is no
longer in effect. 

* TIMING...Rain and snow will increase this afternoon and become 
  heavier tonight. Snow levels will lower to valley floors 
  tonight. Precipitation should decrease by Monday evening. 

* SNOW ACCUMULATIONS...4 to 8 inches with locally higher amounts 
  near higher terrain.

* WIND/VISIBILITY...As low as one quarter mile during periods of 
  heavy snow. 

* IMPACTS...Travel conditions may become slow and hazardous 
  tonight through Monday. Areas of slush and snow will likely 
  develop on roads during the periods of heavier snowfall. 
  Hunters and other outdoor interests should take note of this 
  prolonged period of winter weather, and be prepared for much 
  colder temperatures and accumulating snow. 

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.

&&

$$

COZ034-020100-
/O.CON.KBOU.WW.Y.0023.171002T0000Z-171003T0600Z/
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 Berthoud Pass, Breckenridge, 
East Slopes Mosquito Range, East Slopes Southern Gore Range, 
Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, 
Williams Fork Mountains, and Winter Park
1052 AM MDT Sun Oct 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS
EVENING TO MIDNIGHT MDT MONDAY NIGHT...

* TIMING...Snow will increase tonight and continue into Monday 
  morning. The snow will then decrease by Monday afternoon. 

* SNOW ACCUMULATIONS...5 to 10 inches.

* WIND/VISIBILITY...As low as one half mile during periods of 
  heavier snow. 

* IMPACTS...Travel conditions may be slow and hazardous tonight 
  and Monday. Areas of slush and snow will likely develop on 
  many mountain roads during the periods of heavier snowfall. 
  Hunters and other outdoor interests should take note of this 
  prolonged period of winter weather, and be prepared for much 
  colder temperatures and accumulating snow. 

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.

&&

$$

981 
WWUS45 KBOU 012159
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver/Boulder CO
359 PM MDT Sun Oct 1 2017

...Wintry weather coming to the northern Colorado mountains
tonight and Monday...

.A weather system being driven by a powerful Pacific jet stream
will remain over Colorado tonight and Monday, bringing widespread
precipitation to the north central Colorado mountains. Snow 
levels are expected to drop to 7,500 feet or lower near the 
Wyoming border, and 8,500 to 9,000 feet along the I-70 Corridor by
tonight. Snowfall will be moderate to heavy at times, especially
over Grand, Jackson and western Larimer Counties. The storm 
system is expected to be moving out of the state by Monday 
afternoon with snowfall rates decreasing at that time.

COZ031-033-020600-
/O.CON.KBOU.WS.W.0012.000000T0000Z-171003T0600Z/
West Jackson and West Grand Counties Above 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder 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, and Willow Creek Pass
359 PM MDT Sun Oct 1 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
MONDAY NIGHT...

* TIMING...Snow along with embedded thunderstorms will continue
  this evening and become heavier through tonight. Precipitation 
  should decrease by Monday evening. 

* SNOW ACCUMULATIONS...8 to 16 inches with locally higher 
  amounts possible. 

* WIND/VISIBILITY...As low as one quarter mile during periods of 
  heavy snow. 

* IMPACTS...Travel conditions may be slow and hazardous this
  evening through Monday. Areas of slush and snow will likely
  develop on many mountain roads during the periods of heavier
  snowfall. Hunters , motorists and other outdoor interests should
  take note of the prolonged period of winter weather, and be 
  prepared for much colder temperatures and accumulating snow.
  

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.

&&

$$

COZ035-020600-
/O.EXA.KBOU.WW.Y.0023.171002T0000Z-171003T0600Z/
Larimer and Boulder Counties Between 6000 and 9000 Feet-
Including the cities of Estes Park, Glendevey, Nederland, 
and Red Feather Lakes
359 PM MDT Sun Oct 1 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MDT MONDAY
NIGHT...

The National Weather Service in Denver has issued a Winter
Weather Advisory for anow, which is in effect until midnight MDT 
Monday night. 

* TIMING...Snow will increase tonight and continue into Monday 
  morning. The snow will then decrease by Monday afternoon. 

* SNOW ACCUMULATIONS...4 to 8 inches, with the heaviest amounts 
  above 7500 feet.

* WIND/VISIBILITY...As low as one half mile during periods of 
  heavier snow. 

* IMPACTS...Travel conditions may be slow and hazardous tonight
  and Monday. Areas of slush and snow will likely develop on many
  mountain roads during the periods of heavier snowfall. Hunters,
  motorists and other outdoor interests should take note of the 
  prolonged period of winter weather, and be prepared for much 
  colder temperatures and accumulating snow. 

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.

&&

$$

COZ030-020600-
/O.CON.KBOU.WW.Y.0023.171002T0000Z-171003T0600Z/
Jackson County Below 9000 Feet-
Including the cities of Gould, North Park, Rand, Spicer, 
and Walden
359 PM MDT Sun Oct 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
MONDAY NIGHT...

* TIMING...Snow is expected increase this evening and become
  heavier overnight. A few embedded thunderstorms may also
  develop. Precipitation should decrease by Monday evening. 

* SNOW ACCUMULATIONS...4 to 8 inches with locally higher amounts 
  near higher terrain. 

* WIND/VISIBILITY...As low as one quarter mile during periods of 
  heavy snow. 

* IMPACTS...Travel conditions may become slow and hazardous
  tonight through Monday. Areas of slush and snow will likely
  develop on roads during periods of heavier snowfall. Hunters,
  motorists and other outdoor interests should take note of the 
  prolonged period of winter weather, and be prepared for much 
  colder temperatures and accumulating snow. 

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.

&&

$$

COZ034-020600-
/O.CON.KBOU.WW.Y.0023.171002T0000Z-171003T0600Z/
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 Berthoud Pass, Breckenridge, 
East Slopes Mosquito Range, East Slopes Southern Gore Range, 
Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, 
Williams Fork Mountains, and Winter Park
359 PM MDT Sun Oct 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
MONDAY NIGHT...

* TIMING...Snow will increase tonight and continue into Monday 
  morning. The snow will then decrease by Monday afternoon. 

* SNOW ACCUMULATIONS...5 to 10 inches.

* WIND/VISIBILITY...As low as one half mile during periods of 
  heavier snow. 

* IMPACTS...Travel conditions may be slow and hazardous tonight
  and Monday. Areas of slush and snow will likely develop on many
  mountain roads during the periods of heavier snowfall. Hunters,
  motorists and other outdoor interests should take note of the 
  prolonged period of winter weather, and be prepared for much 
  colder temperatures and accumulating snow. 

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.

&&

$$

523 
WWUS45 KBOU 020402
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1002 PM MDT Sun Oct 1 2017

...Wintry weather to continue over the northern Colorado 
mountains tonight and Monday...

.A weather system being driven by a powerful Pacific jet stream
will remain over Colorado tonight and Monday, bringing widespread
precipitation to the north central Colorado mountains. Snow
levels are expected to drop to 7,500 feet or lower near the
Wyoming border, and between 8,000 to 9,000 feet along the I-70 
Corridor. As of late this evening, the heaviest snow has been
falling over the I-70 corridor. The heavier snow is expected to
lift further north through the night. The storm system is 
expected to be moving out of the state by Monday afternoon with 
snowfall rates decreasing at that time.

COZ031-033-021215-
/O.CON.KBOU.WS.W.0012.000000T0000Z-171003T0600Z/
West Jackson and West Grand Counties Above 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder 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, and Willow Creek Pass
1002 PM MDT Sun Oct 1 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
MONDAY NIGHT...

* TIMING...Snow will continue overnight and become heavier again
  after midnight.  Precipitation should decrease by Monday 
  evening. 

* SNOW ACCUMULATIONS...8 to 16 inches with locally higher 
  amounts possible. 

* WIND/VISIBILITY...As low as one quarter mile during periods of 
  heavy snow. 

* IMPACTS...Travel conditions may be slow and hazardous this 
  evening through Monday. Areas of slush and snow will likely 
  develop on many mountain roads during the periods of heavier 
  snowfall. Hunters , motorists and other outdoor interests 
  should take note of the prolonged period of winter weather, 
  and be prepared for much colder temperatures and accumulating 
  snow. 

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.

&&

$$

COZ030-035-021215-
/O.CON.KBOU.WW.Y.0023.000000T0000Z-171003T0600Z/
Jackson County Below 9000 Feet-
Larimer and Boulder Counties Between 6000 and 9000 Feet-
Including the cities of Gould, North Park, Rand, Spicer, Walden, 
Estes Park, Glendevey, Nederland, and Red Feather Lakes
1002 PM MDT Sun Oct 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
MONDAY NIGHT...

* TIMING...Snow will increase tonight and continue into Monday 
  morning. The snow will then decrease by Monday afternoon. 

* SNOW ACCUMULATIONS...4 to 8 inches, with the heaviest amounts 
  above 7500 feet. 

* WIND/VISIBILITY...As low as one half mile during periods of 
  heavier snow. 

* IMPACTS...Travel conditions may be slow and hazardous tonight 
  and Monday. Areas of slush and snow will likely develop on 
  many mountain roads during the periods of heavier snowfall. 
  Hunters, motorists and other outdoor interests should take 
  note of the prolonged period of winter weather, and be 
  prepared for much colder temperatures and accumulating snow. 

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.

&&

$$

COZ034-021215-
/O.CON.KBOU.WW.Y.0023.000000T0000Z-171003T0600Z/
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 Berthoud Pass, Breckenridge, 
East Slopes Mosquito Range, East Slopes Southern Gore Range, 
Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, 
Williams Fork Mountains, and Winter Park
1002 PM MDT Sun Oct 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
MONDAY NIGHT...

* TIMING...Snow will continue to be heavy at times through
  midnight, then a decrease in intensity overnight through Monday
  morning.
 
* SNOW ACCUMULATIONS...5 to 10 inches.

* WIND/VISIBILITY...As low as one half mile during periods of 
  heavier snow. 

* IMPACTS...Travel conditions may be slow and hazardous tonight 
  and Monday. Areas of slush and snow will likely develop on 
  many mountain roads during the periods of heavier snowfall. 
  Hunters, motorists and other outdoor interests should take 
  note of the prolonged period of winter weather, and be 
  prepared for much colder temperatures and accumulating snow. 

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.

&&

$$

703 
WWUS45 KBOU 020958
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
358 AM MDT Mon Oct 2 2017

...Wintry weather to continue over the northern Colorado
mountains today trough this evening...

.A weather system being driven by a powerful Pacific jet stream
will remain over Colorado today, bringing widespread 
precipitation to the north central Colorado mountains. Snow levels
are expected around 7000 feet near the Wyoming border, and 
around 8,000 feet along the I- 70 Corridor. The storm system is 
expected to move out of the state this evening with snow gradually 
ending.

COZ031-033-021800-
/O.CON.KBOU.WS.W.0012.000000T0000Z-171003T0600Z/
Rabbit Ears Pass-
Rocky Mountain National Park and the Medicine Bow Range-
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, and Willow Creek Pass
358 AM MDT Mon Oct 2 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Periods of Moderate to Heavy snow occurring. Plan on
  difficult travel conditions, including during the morning
  commute. Additional snow accumulations of 5 to 10 inches, with
  localized amounts up to 12 inches, are expected.

* WHERE...Rabbit Ears Pass and Rocky Mountain National Park and 
  the Medicine Bow Range.

* WHEN...Until midnight.

* ADDITIONAL DETAILS...Travel conditions will be slow and
  hazardous today through this evening due to icy conditions and
  snow pack roads. Hunters, motorists and  other outdoor 
  interests should take note of the prolonged period of winter 
  weather, and be prepared for much colder temperatures and 
  accumulating snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

&&

$$

COZ030-035-021800-
/O.CON.KBOU.WW.Y.0023.000000T0000Z-171003T0600Z/
North Park-The Northern Front Range Foothills-
Including the cities of Gould, North Park, Rand, Spicer, Walden, 
Estes Park, Glendevey, Nederland, and Red Feather Lakes
358 AM MDT Mon Oct 2 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Wet snow occurring. Plan on slippery road conditions,
  including during the morning commute. Additional wet snow
  accumulations of 3 to 6 inches, with localized amounts up to 8 
  inches, are expected.

* WHERE...North Park and The Northern Front Range Foothills.

* WHEN...Until midnight.

* ADDITIONAL DETAILS...Travel conditions will be slow and
  hazardous today through this evening. Hunters, motorists and 
  other outdoor interests should take note of the prolonged period
  of winter weather, and be prepared for much colder temperatures
  and accumulating snow.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

&&

$$

COZ034-021800-
/O.CON.KBOU.WW.Y.0023.000000T0000Z-171003T0600Z/
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
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, and Winter Park
358 AM MDT Mon Oct 2 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Snow occurring. Plan on slippery road conditions,
  including during the morning commute. Additional snow
  accumulations of 3 to 6 inches, with localized amounts up to 8 
  inches, are expected.

* WHERE...The Mountains of Summit County, the Mosquito Range and 
  and the Indian Peaks including the I-70 mountain corridor.

* WHEN...Until midnight.

* ADDITIONAL DETAILS...Travel conditions will be slow and
  hazardous today through this evening due to icy conditions and
  snow pack roads. Hunters, motorists and other outdoor interests
  should take note of the prolonged period of winter weather, and
  be prepared for much colder temperatures and accumulating snow.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

471 
WWUS45 KBOU 021720
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
1120 AM MDT Mon Oct 2 2017

...Wintry weather to continue over the northern Colorado
mountains today trough this evening...

.A weather system being driven by a powerful Pacific jet stream
will remain over Colorado through this evening, bringing 
widespread precipitation to the north central Colorado mountains. 
Snow levels are expected around 7000 feet near the Wyoming border,
and around 8,000 feet along the I-70 Corridor. The storm system 
is expected to move out of the state this evening with snow 
gradually ending.

COZ031-033-030600-
/O.CON.KBOU.WS.W.0012.000000T0000Z-171003T0600Z/
Rabbit Ears Pass-
Rocky Mountain National Park and the Medicine Bow Range-
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, and Willow Creek Pass
1120 AM MDT Mon Oct 2 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Snow occurring. Plan on difficult travel conditions. 
  Additional snow accumulations of 4 to 8 inches are expected.

* WHERE...Rabbit Ears Pass and Rocky Mountain National Park and 
  the Medicine Bow Range.

* WHEN...Until midnight.

* ADDITIONAL DETAILS...Be prepared for slick and slushy roads with
  reduced visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

COZ030-035-030600-
/O.CON.KBOU.WW.Y.0023.000000T0000Z-171003T0600Z/
North Park-The Northern Front Range Foothills-
Including the cities of Gould, North Park, Rand, Spicer, Walden, 
Estes Park, Glendevey, Nederland, and Red Feather Lakes
1120 AM MDT Mon Oct 2 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Wet snow occurring. Plan on slippery road conditions.
  Additional wet snow accumulations of 2 to 5 inches are 
  expected.

* WHERE...North Park and The Northern Front Range Foothills.

* WHEN...Until midnight.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for wet snow means periods of wet snow
will cause primarily travel difficulties. Be prepared for snow
covered roads and limited visibilities, and use caution while
driving. The latest road conditions for the state you are calling
from can be obtained by calling 5 1 1.

$$

COZ034-030600-
/O.CON.KBOU.WW.Y.0023.000000T0000Z-171003T0600Z/
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
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, and Winter Park
1120 AM MDT Mon Oct 2 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Snow occurring. Plan on slippery road conditions.
  Additional snow accumulations of 2 to 4 inches, with localized
  amounts up to 6 inches, are expected.

* WHERE...The Mountains of Summit County, the Mosquito Range and 
  and the Indian Peaks.

* WHEN...Until midnight.

* ADDITIONAL DETAILS...Be prepared for slick and slushy roads with reduced
  visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

819 
WWUS45 KBOU 030224
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
824 PM MDT Mon Oct 2 2017

...WINTER STORM WINDING DOWN...

.Snow will diminish over the northern Colorado mountains this
evening, with only areas of light snow over the higher ridges
after midnight. Some places may get another inch or two of snow
before the storm ends.

COZ031-033-030600-
/O.CON.KBOU.WS.W.0012.000000T0000Z-171003T0600Z/
Rabbit Ears Pass-
Rocky Mountain National Park and the Medicine Bow Range-
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, and Willow Creek Pass
824 PM MDT Mon Oct 2 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Snow occurring. The snow will diminish this evening. Plan
  on difficult travel conditions. Additional snow accumulations of
  up to two inches are expected.

* WHERE...Rabbit Ears Pass and Rocky Mountain National Park and 
  the Medicine Bow Range.

* WHEN...Until midnight.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are occurring. If you must travel, keep an extra
flashlight, food and water in your vehicle in case of an
emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

COZ030-035-030600-
/O.CON.KBOU.WW.Y.0023.000000T0000Z-171003T0600Z/
North Park-The Northern Front Range Foothills-
Including the cities of Gould, North Park, Rand, Spicer, Walden, 
Estes Park, Glendevey, Nederland, and Red Feather Lakes
824 PM MDT Mon Oct 2 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Snow occurring. The snow will diminish this evening. Additional
  accumulations of up to 2 inches are expected.

* WHERE...North Park and The Northern Front Range Foothills.

* WHEN...Until midnight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

COZ034-030600-
/O.CON.KBOU.WW.Y.0023.000000T0000Z-171003T0600Z/
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
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, and Winter Park
824 PM MDT Mon Oct 2 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Snow occurring. The snow will decrease this evening. Plan
  on slippery road conditions. Additional snow accumulations of up
  to two inches are expected.

* WHERE...The Mountains of Summit County, the Mosquito Range and 
  and the Indian Peaks.

* WHEN...Until midnight.

* ADDITIONAL DETAILS...Road closures are possible due to
  accidents. Be prepared for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

Gimmestad

122 
WWUS45 KBOU 030602
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
1202 AM MDT Tue Oct 3 2017

COZ031-033-030715-
/O.EXP.KBOU.WS.W.0012.000000T0000Z-171003T0600Z/
Rabbit Ears Pass-
Rocky Mountain National Park and the Medicine Bow Range-
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, and Willow Creek Pass
1202 AM MDT Tue Oct 3 2017

...WINTER STORM WARNING HAS EXPIRED...

There will be a few lingering snow showers, but any additional
accumulations will be under an inch. Continue to watch out for 
icy and snowpacked roads. 

$$

COZ030-034-035-030715-
/O.EXP.KBOU.WW.Y.0023.000000T0000Z-171003T0600Z/
North Park-
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-The Northern Front Range Foothills-
Including the cities of Gould, North Park, Rand, Spicer, Walden, 
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, Estes Park, Glendevey, Nederland, 
and Red Feather Lakes
1202 AM MDT Tue Oct 3 2017

...WINTER WEATHER ADVISORY HAS EXPIRED...

There will be a few lingering snow showers, but any additional
accumulations will be under an inch. Continue to watch out for 
icy and snowpacked roads. 

$$

Area Forecast Discussion
National Weather Service Denver/Boulder CO
934 PM MDT Sat Sep 30 2017

.UPDATE...
Issued at 922 PM MDT Sat Sep 30 2017

Lightning still going on in northwest CO between Craig and Meeker
this evening so have opted to extend isolated thunderstorm coverage
west of the Continental Divide into the early morning hours tngt.
Latest HRRR show some of the shower activity surviving the downslope
late tngt into Sunday morning and possibly moving Weld County so
have added isolated showers there. Localized bands of gusty winds
still occurring across parts of the Urban Corridor this evening
but these should gradually decrease the rest of the evening.

&&

.SHORT TERM...(This evening through Sunday)
Issued at 341 PM MDT Sat Sep 30 2017

The leading edge showers is moving over the central and northern
mountains with thunderstorms approaching Aspen and the Grand Lake
area. The back edge of this shower activity is crossing the
western Colorado border now with all of the activity tracking in
an east-northeast direction. This shower activity is expected to
move out onto the plains during the early evening. Satellite
imagery shows a fair amount of cloud cover already over the plains
which will reduce the strength of surface based convection
through this evening. A few thunderstorms from elevated convection
will be possible, but no strong surface based thunderstorms are
expected. The latest HRRR shows most of the convection moving out
of northeast Colorado by 9 PM, but then another round of rain
showers after midnight. The latter showers may be related to the
approaching upper level jet, and will be the onset of tomorrow's
expected precipitation. Model temperature fields keep the mid-
levels warm enough for snow levels to remain above 10,000 feet
overnight.

Tomorrow will feature a transition to showers being driven by the
upper jet and dynamics aloft as Colorado will be under
strengthening cyclonic westerly flow aloft. Mid-level temperatures
will be falling through the day with falling snow levels by
afternoon. Temperatures on the plains will remain mild as the
westerly flow aloft will be downsloping. Late in the afternoon,
banded precipitation will be on the increase.

.LONG TERM...(Sunday night through Saturday)
Issued at 341 PM MDT Sat Sep 30 2017

Main concern surrounds the potential for significant snowfall in
the northern mountains Sunday night through Monday. Models have
remained consistent with the overall pattern, but the details will
be what's hard to pin down, as this event will be closely tied to
the resultant banded precipitation associated with the upper level
jet.

For Sunday night, cold advection kicks in across northern Colorado
with snow levels expected to drop to 7,000-8,000 feet for
locations near the Wyoming border, and down to 8,500-9,000 feet
along the I-70 Corridor. However, these numbers could change quite
a bit as the thermal gradient under the jet is sharp. While
moisture is somewhat limited, it's still moist and large scale
forcing is present as noted in the Q-G fields. Lapse rates are
not terribly unstable with values of 5-6 C/km, but cross sections
show Conditional Symmetric Instability and potential for
convection. Not surprising given the proximity and positioning of
the upper level jet. As a result, we'll be increase PoPs and QPF a
bit more for this period. Snow accumulations are expected to be
heaviest where it's coldest and banded convection should be more
persistent, generally just north of the I-70 Corridor at this
time. We'll issue a Winter Storm Watch for the northern tier of
mountains including the Rabbit Ears Pass and Rocky Mountain
National Park area where potential for 8-16 inches of snow. Snow
level should hit the valley floor of Jackson county by Sunday
night, and given the banded convective potential there will also
issue the watch for North Park.

On the plains, we have potential for a couple strong/severe storms
over the eastern plains into Sunday evening. Then more widespread
showers should develop behind the cold front through the course of
the evening. Points generally along/north of I-76 should see
higher and perhaps widespread coverage of showers into Monday
morning. Temperatures will turn much cooler, and hard to say
exactly how much warming we'll see Monday with increasing
baroclinicity along a surface cyclone. Stratus usually intensifies
these situations keeping cold air near the foothills.

By Monday night, precipitation is expected to decrease later in
the night as weak subsidence builds over the forecast area.

For Tuesday through the end of next week, we should see gradual
moderation in temperatures as drier southwest flow aloft develops.
A chance of storms should return by Thursday or Friday with a
return of mid level moisture.

&&

.AVIATION...(For the 06Z TAFS through 06Z Sunday night)
Issued at 922 PM MDT Sat Sep 30 2017

Ceilings will be in the VFR range through Sunday afternoon. KFTG
radar still showing a locally stronger band of wind extending
from southeastern Boulder County into KDEN and KBJC at this time.
Stronger gusts of 20-25 kts still possible over the next hour or
so, but still expect the wind to decrease and shift more
southwesterly by late this evening. It may last longer at KBJC.
&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from Sunday afternoon through Monday evening
for COZ030-031-033.

&&

UPDATE...Cooper
SHORT TERM...Dankers
LONG TERM...Barjenbruch
AVIATION...Cooper

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1109 AM MDT Sat Sep 30 2017

COZ030>051-011715-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 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-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
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-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1109 AM MDT Sat Sep 30 2017

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms are expected to form over the
high country this afternoon and then move eastward across
northeast Colorado late this afternoon and evening. An isolated
severe storm or two may occur over the eastern plains with hail
up to one inch in diameter and wind gusts to 60 mph.

The showers and thunderstorms are expected to end over the
plains by late evening. Over the mountains, showers will become
likely tonight with the snow level down to 10000 feet. Snowfall
accumulations of 2 to 6 inches will be possible in some mountain
areas north of I-70 overnight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

After a brief break, the next storm system will quickly arrive in
the northern mountains by mid day Sunday. Snow levels will lower
from 9000 to 10000 feet on Sunday, down to between 7000 and 8000
feet over the northern border area by late Sunday night and
Monday. The combination of colder temperatures and a prolonged
period of precipitation may result in heavy snow accumulations
across the northern mountains and high valleys, favoring the
northern border area including Jackson, Grand, and higher
elevations of Larimer County. Farther south in the mountains
including the I-70 through Summit County, snow levels will be a
little higher and precipitation amounts should be lighter.
However, there may still be travel impacts with slushy or snow
covered roads over the higher mountain passes including the
approaches to the Eisenhower Tunnel and Vail Pass.

In lower elevations, an isolated severe storm or two will be
possible east of a Sterling to Akron line late Sunday afternoon
and evening. Then much cooler weather and a better chance of
showers will spread across the plains Sunday night into Monday
night. Precipitation is expected to decrease by early Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.