Winter Storm Warning 8, NWS Denver/Boulder, CO

074 
WWUS45 KBOU 311600
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1000 AM MDT Fri Mar 31 2017

...Another spring storm moves into Colorado...

A storm system over northern Arizona will track slowly eastward 
into New Mexico tonight and Saturday. Rain and snow will become 
more widespread Friday afternoon. Snow levels will initially be 
around 7500 feet, but then lower down into the I-25 corridor and 
adjacent plains after midnight tonight. Significant accumulations
are expected above 6000 feet elevation through Saturday midday. People
planning travel across Colorado should be prepared for hazardous 
winter travel conditions through the mountains and foothills and 
around the Monument Hill area.

COZ033>036-010100-
/O.CON.KBOU.WS.W.0008.170331T1800Z-170401T1800Z/
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-
Including the cities of 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, Estes Park, Glendevey, Nederland, Red Feather Lakes,
Bailey, Central City, Evergreen, Georgetown, Idaho Springs, 
and Westcreek
1000 AM MDT Fri Mar 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* TIMING...More widespread snow will develop today, first in the 
  northern border area late Friday morning and then spreading 
  southward across the rest of the Front Range Mountains and 
  Foothills during the afternoon. Snow, heavy at times, will be 
  possible through early Saturday morning before decreasing by 
  mid day. 

* SNOW ACCUMULATIONS...8 to 16 inches possible.

* WIND/VISIBILITY...Visibility less than one quarter mile at 
  times in heavy snow. Light winds. 

* IMPACTS...Snow and slush covered roads will likely create 
  hazardous travel Friday afternoon through Saturday morning. 

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.

&&

$$

COZ041-010100-
/O.UPG.KBOU.WS.A.0009.170401T0000Z-170402T0000Z/
/O.EXB.KBOU.WW.Y.0017.170401T0000Z-170402T0000Z/
Elbert/Central and East Douglas Counties Above 6000 Feet-
Including the cities of Castle Rock, Elbert, Fondis, Kiowa, 
and Larkspur
1000 AM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
6 PM MDT SATURDAY...

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 The Winter Storm Watch is no longer 
in effect. 

* TIMING...Rain and snow will develop late Friday afternoon and
  evening and then change to all snow by midnight. The snow may be
  heavy at times early Saturday morning, and then finally 
decrease late Saturday afternoon. 

* SNOW ACCUMULATIONS...4 to 9 inches possible. Highest amounts 
should occur in the Monument Hill area, and the lowest amounts 
will occur below 6500 feet elevation.

* WIND/VISIBILITY...Visibility may be reduced to one half mile at
  times in moderate snow. North winds will gust up to 25 mph. 

* IMPACTS...Snow and slush covered roads will likely create
  hazardous travel Friday night into Saturday, especially above
  6500 feet. Travel in an around Mounument Hill could become 
hazardous Saturday morning. 

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.

&&

$$

COZ037-010100-
/O.CON.KBOU.WW.Y.0017.170331T1800Z-170401T1800Z/
Central and Southeast Park County-
Including the cities of Fairplay, Hartsel, Lake George, 
and South Park
1000 AM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* TIMING...snow will become widespread by later this afternoon 
  and evening and continue overnight. 

* SNOW ACCUMULATIONS...4 to 9 inches.

* WIND/VISIBILITY...Visibility less than one quarter mile at 
  times in heavy snow. Light winds. 

* IMPACTS...Snow and slush covered roads will likely create 
  hazardous travel Friday afternoon through Saturday morning. 

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.

&&

$$

397 
WWUS45 KBOU 312303
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver/Boulder CO
503 PM MDT Fri Mar 31 2017

...Another spring storm moves into Colorado...

A storm system over northern Arizona will track slowly eastward
into New Mexico tonight and Saturday. Snow levels will lower down
into the I-25 corridor and adjacent plains tonight. Significant 
accumulations are expected above 6000 feet elevation through 
Saturday midday. People planning travel across Colorado should be 
prepared for hazardous winter travel conditions through the 
mountains and foothills and around the Monument Hill area tonight
and Saturday morning.

COZ034-036-011200-
/O.CON.KBOU.WS.W.0008.000000T0000Z-170401T1800Z/
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
503 PM MDT Fri Mar 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* TIMING...Snow, heavy at times, is expected through early
  Saturday morning before decreasing by mid day. The heaviest snow
  is expected east of the Continental Divide.

* SNOW ACCUMULATIONS...6 to 12 inches...mainly east of the
  Continental Divide.

* WIND/VISIBILITY...Visibility less than one quarter mile at 
  times in heavy snow. Light winds. 

* IMPACTS...Snow and slush covered roads will likely create
  hazardous travel tonight and Saturday morning. 

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

&&

$$

COZ033-035-011200-
/O.CON.KBOU.WS.W.0008.000000T0000Z-170401T1800Z/
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
503 PM MDT Fri Mar 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* TIMING...Snow is expected through tonight and will end Saturday
  morning. The heaviest snow is expected east of the Continental
  Divide.

* SNOW ACCUMULATIONS...4 to 10 inches possible...mainly east of
  the Continental Divide. Areas west of the Continental Divide may
  see little snow fall.

* WIND/VISIBILITY...Visibility less than one quarter mile at 
  times in heavy snow. Light winds. 

* IMPACTS...Snow and slush covered roads are expected in places
  and will likely create hazardous travel tonight and Saturday 
  morning.


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

&&

$$

COZ037-011200-
/O.CON.KBOU.WW.Y.0017.000000T0000Z-170401T1800Z/
Central and Southeast Park County-
Including the cities of Fairplay, Hartsel, Lake George, 
and South Park
503 PM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* TIMING...Snow will become widespread this evening and continue
  overnight. Snow will decrease Saturday morning. 

* SNOW ACCUMULATIONS...4 to 9 inches.

* WIND/VISIBILITY...Visibility less than one quarter mile at 
  times in heavy snow. Light winds. 

* IMPACTS...Snow and slush covered roads will likely create
  hazardous travel tonight and Saturday morning. 

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.

&&

$$

COZ041-011200-
/O.CON.KBOU.WW.Y.0017.170401T0000Z-170402T0000Z/
Elbert/Central and East Douglas Counties Above 6000 Feet-
Including the cities of Castle Rock, Elbert, Fondis, Kiowa, 
and Larkspur
503 PM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

* TIMING...Rain and snow will change to all snow by midnight. The
  snow may be heavy at times. Snow will finally decrease Saturday
  afternoon. 

* SNOW ACCUMULATIONS...4 to 9 inches possible. Highest amounts 
  should occur in the Monument Hill area, and the lowest amounts 
  will occur below 6500 feet elevation.

* WIND/VISIBILITY...Visibility may be reduced to one quarter mile
  at times in heavy snow. North winds will gust up to 25 mph. 

* IMPACTS...Snow and slush covered roads will likely create
  hazardous travel tonight into Saturday, especially above 6500
  feet. Travel in and around Monument Hill could become hazardous
  Saturday morning. 

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.

&&

$$

315 
WWUS45 KBOU 010208
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver/Boulder CO
808 PM MDT Fri Mar 31 2017

...Another spring storm moves into Colorado...

A storm system over northern Arizona will track slowly eastward
into New Mexico tonight and Saturday. Snow levels will lower down
into the I-25 corridor and adjacent plains tonight. Significant
accumulations are expected above 6000 feet elevation south of
Interstate 70 through Saturday morning. People planning travel 
across Colorado should be prepared for hazardous winter travel 
conditions through the mountains and foothills and around the 
Monument Hill area tonight and Saturday morning. In addition to
the snow, areas of drizzle or freezing drizzle will be possible
over the northern foothills and northern urban corridor tonight. 

COZ035-011015-
/O.CAN.KBOU.WS.W.0008.000000T0000Z-170401T1800Z/
/O.EXA.KBOU.WW.Y.0017.000000T0000Z-170401T1800Z/
Larimer and Boulder Counties Between 6000 and 9000 Feet-
Including the cities of Estes Park, Glendevey, Nederland, 
and Red Feather Lakes
808 PM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT SATURDAY...
...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in Denver has issued a Winter
Weather Advisory for Snow and Freezing Drizzle, which is in 
effect until noon MDT Saturday. The Winter Storm Warning has been 
cancelled. 

* TIMING...Areas of snow and freezing drizzle will continue
  overnight. Snow and freezing drizzle will decrease Saturday
  morning. 

* SNOW ACCUMULATIONS...Up to 5 inches.

* ICE ACCUMULATIONS...Up to a tenth inch.

* IMPACTS...Snow and slush covered roads will likely create
  hazardous travel tonight and Saturday morning. Bridges and
  overpasses may become ice covered due to the freezing drizzle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow...sleet...or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities...and use caution while
driving.

&&

$$

COZ033-010315-
/O.CAN.KBOU.WS.W.0008.000000T0000Z-170401T1800Z/
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
Including the cities of Cameron Pass, 
Laramie and Medicine Bow Mountains, Rabbit Ears Range, 
Rocky Mountain National Park, and Willow Creek Pass
808 PM MDT Fri Mar 31 2017

...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in Denver has cancelled the Winter
Storm Warning. 

Additional light snow for the northern mountains is expected to be
light, so the Winter Storm Warning has been canceled.

$$

COZ034-036-011015-
/O.CON.KBOU.WS.W.0008.000000T0000Z-170401T1800Z/
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
808 PM MDT Fri Mar 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* TIMING...Snow is expected through early Saturday morning before
  decreasing by mid day. The heaviest snow is expected east of the
  Continental Divide. 

* SNOW ACCUMULATIONS...5 to 10 inches...mainly east of the 
  Continental Divide. 

* WIND/VISIBILITY...Visibility less than one quarter mile at 
  times in heavy snow. Light winds. 

* IMPACTS...Snow and slush covered roads will likely create 
  hazardous travel tonight and Saturday morning. 

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

&&

$$

COZ037-011015-
/O.CON.KBOU.WW.Y.0017.000000T0000Z-170401T1800Z/
Central and Southeast Park County-
Including the cities of Fairplay, Hartsel, Lake George, 
and South Park
808 PM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* TIMING...Snow will continue overnight and decrease Saturday
  morning.

* SNOW ACCUMULATIONS...4 to 9 inches.

* WIND/VISIBILITY...Visibility less than one quarter mile at 
  times in heavy snow. Light winds. 

* IMPACTS...Snow and slush covered roads will create hazardous
  travel tonight and Saturday morning. 

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.

&&

$$

COZ041-011015-
/O.CON.KBOU.WW.Y.0017.000000T0000Z-170402T0000Z/
Elbert/Central and East Douglas Counties Above 6000 Feet-
Including the cities of Castle Rock, Elbert, Fondis, Kiowa, 
and Larkspur
808 PM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
SATURDAY...

* TIMING...Rain and snow will change to all snow by midnight. 
  The snow may be heavy at times. Snow will finally decrease 
  Saturday afternoon. 

* SNOW ACCUMULATIONS...4 to 9 inches possible. Highest amounts 
  should occur in the Monument Hill area, and the lowest amounts 
  will occur below 6500 feet elevation. 

* WIND/VISIBILITY...Visibility may be reduced to one quarter 
  mile at times in heavy snow. North winds will gust up to 25 
  mph. 

* IMPACTS...Snow and slush covered roads will likely create 
  hazardous travel tonight into Saturday, especially above 6500 
  feet. Travel in and around Monument Hill could become 
  hazardous Saturday morning. 

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.

&&

$$

192 
WWUS45 KBOU 011004
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver/Boulder CO
404 AM MDT Sat Apr 1 2017

...Another spring storm moves into Colorado...

A storm system over northern Arizona will track slowly eastward
into New Mexico tonight and Saturday. Snow levels will lower down
into the I-25 corridor and adjacent plains tonight. Significant
accumulations are expected above 6000 feet elevation south of
Interstate 70 through Saturday morning. People planning travel
across Colorado should be prepared for hazardous winter travel
conditions through the mountains and foothills and around the
Monument Hill area tonight and Saturday morning. In addition to
the snow, areas of drizzle or freezing drizzle will be possible
over the northern foothills and northern urban corridor tonight.

COZ034-036-011800-
/O.CAN.KBOU.WS.W.0008.000000T0000Z-170401T1800Z/
/O.EXA.KBOU.WW.Y.0017.000000T0000Z-170401T1800Z/
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
404 AM MDT Sat Apr 1 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT TODAY...
...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in Denver has issued a Winter
Weather Advisory for snow, which is in effect until noon MDT 
today. The Winter Storm Warning has been cancelled. 

* TIMING...Areas of snow will decrease through the morning. The
  heaviest snow is expected east of the Continental Divide, with
  low visibilities in fog possible.

* SNOW ACCUMULATIONS...Additional amounts of up to 3 inches.

* IMPACTS...Snow and slush covered roads will likely create
  hazardous travel this morning.

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.

&&

$$

COZ041-011115-
/O.CAN.KBOU.WW.Y.0017.000000T0000Z-170402T0000Z/
Elbert/Central and East Douglas Counties Above 6000 Feet-
Including the cities of Castle Rock, Elbert, Fondis, Kiowa, 
and Larkspur
404 AM MDT Sat Apr 1 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

The National Weather Service in Denver has cancelled the Winter
Weather Advisory. 

Areas of light snow will continue this morning, but amounts are
expected to be below two inches, and accumulating mainly on grass
whereas roads will stay mainly wet.

$$

COZ037-011800-
/O.CON.KBOU.WW.Y.0017.000000T0000Z-170401T1800Z/
Central and Southeast Park County-
Including the cities of Fairplay, Hartsel, Lake George, 
and South Park
404 AM MDT Sat Apr 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
TODAY...

* TIMING...Snow will be decreasing this morning.

* SNOW ACCUMULATIONS...1 to 3 inches of additional accumulation.

* WIND/VISIBILITY...Visibility less than half mile at times
  snow and fog. Light winds. 

* IMPACTS...Snow and slush covered roads will create hazardous
  travel this morning. 

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.

&&

$$

COZ035-011800-
/O.CON.KBOU.WW.Y.0017.000000T0000Z-170401T1800Z/
Larimer and Boulder Counties Between 6000 and 9000 Feet-
Including the cities of Estes Park, Glendevey, Nederland, 
and Red Feather Lakes
404 AM MDT Sat Apr 1 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
TODAY...

* TIMING...Areas of snow and freezing drizzle will decrease
  through the morning. 

* SNOW ACCUMULATIONS...Up to an inch additional accumulation.

* ICE ACCUMULATIONS...Up to a tenth inch.

* IMPACTS...Snow and slush covered roads will likely create
  hazardous travel this morning. Bridges and overpasses may 
 become ice covered due to the freezing drizzle. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow...sleet...or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities...and use caution while
driving.

&&

$$

Area Forecast Discussion
National Weather Service Denver/Boulder CO
353 AM MDT Fri Mar 31 2017

.SHORT TERM...(Today and tonight)
Issued at 353 AM MDT Fri Mar 31 2017

Main concerns centered around incoming storm system and snowfall
impacts to mountains, foothills and portions of higher terrain of
the Palmer Divide today through early Saturday. Currently water
vapor imagery showing closed upper low now moving a bit more
eastward across north central Arizona. Model consensus is to have
the upper low moving slowly east and southeast into Northeast
Arizona by later today. This will provide for moderate QG ascent
across much of the forecast area today along with increasing
upslope flow and deepening moisture this afternoon and evening.
For tonight, the upper low is now progged to drop further south
and southeast into Western New Mexico by early Saturday morning
and will take the best dynamics south of BOU CWA. This seems
reasonable as best QG height falls will be across south of Arizona
and New Mexico and into Mexico tonight. This will continue to
focus heaviest precip further south into Southern Colorado and New
Mexico and away from our area.

Still think the mountains and Front Range foothills of east
slopes will do still do well with snowfall later this afternoon
and especially this evening with moist upslope flow but by after
midnight precip shield will focus further south. West of the
divide, though amounts will be much less. Across lower elevations
it now looks a bit warmer as really not any strong cold front as
readings still in the upper 30s/lower 40s. This will delay the
changeover from rain to snow until mainly after midnight for
elevations between 5000-6000 feet and mainly still all rain on the
far northeast plains. Still much uncertainty with the Palmer
Divide in how quick the changeover can occur and overall moisture
availability. Will opt to hold on to the watch for the Palmer
Divide but will upgrade the mountain/foothills areas to warnings.
For elevations below 6000 feet, feel there will be enough melting
along with warm ground surfaces for only minimal impact so no
advisories for the denver area and urban corridor. Overall precip
intensities will decrease after midnight tonight.

.LONG TERM...(Saturday through Thursday)
Issued at 353 AM MDT Fri Mar 31 2017

The upper low will be heading further south into central New
Mexico Saturday with the trough axis over the state and moving
southeast. Low level flow will remain upslope in the morning with
snow levels expected around 5000 feet. With low temperatures that
morning around 32 to 35 across most of the plains, snow will
likely remain wet and slushy. The exception may be the crest of
the Palmer Divide where travel may be impacted by heavier snowfall.
Expect up to another 2 inches across the plains, with another 2
to 5 inches over the Palmer. Best upward QG motion will translate
south into NM as well, so expect precipitation rates to be
decreasing through the late morning and into the afternoon. Rain
will begin to mix back in by noon over the plains. Moderate, to
at times heavy, snow in the Front Range mountains and foothills will
continue early Saturday morning with decreasing intensity through
the day north to south. Expect another 1 to 4 inches of snowfall.
West of the divide, downsloping will dramatically diminish snow
amounts, and snow all together.

A few showers may remain over the east central plains Saturday
evening, but an upper ridge will build in to clear conditions and
allow for colder temperatures overnight. A weak fast moving trough
over the Northern Rockies will bring a chance of snow to the
mountains Sunday, otherwise expect a warmer seasonable day. Another
system digs further south into the Great Basin Monday to bring
another round of widespread precipitation to the state Monday
night through Tuesday. This system looks to have the potential to
be colder than tonight's system, so lowered forecasted max temps
below guidance.

Strong northerly flow is expected Wednesday with a few showers
still possible before an upper ridge will move over the area
Thursday and Friday for warm and dry conditions.

&&

.AVIATION...(For the 12Z TAFS through 12Z Saturday morning)
Issued at 353 AM MDT Fri Mar 31 2017

Ceilings will continue to lower through the early morning hours
under increasing easterly flow at the low levels and weak denver
cyclone also developing. A few showers this morning but areal
coverage of rain will increase during the afternoon hours. Still
lower confidence on rain to snow changeover tonight but opting for
later changeover until around midnight given slightly warmer
temperatures/higher dewpoints. Overall snowfall looks to be mainly
2 to 4 inches on grassy surfaces but only wet to up to an inch of
west slush on runway surfaces.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from this evening through Saturday afternoon
for COZ041.

Winter Storm Warning from noon today to noon MDT Saturday for
COZ033>036.

&&

SHORT TERM...Entrekin
LONG TERM...Kriederman
AVIATION...Entrekin

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
1114 AM MDT Thu Mar 30 2017

COZ030>051-311715-
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-
1114 AM MDT Thu Mar 30 2017

...WINTER STORM WATCH FOR THE FRONT RANGE FOOTHILLS...
MOUNTAINS...AND PALMER DIVIDE FRIDAY AFTERNOON INTO SATURDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL
COLORADO.

.DAY ONE...TODAY AND TONIGHT

Scattered rain and snow showers will develop over the mountains
and higher foothills later this afternoon and tonight. Any snow
accumulations will be under 2 inches and mainly over the higher
elevations. A few showers may also develop over lower elevations
tonight, especially locations near the Wyoming border. Areas of
low clouds and patchy fog will also develop later tonight on the
plains.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A slow moving and moist storm system will impact the region
Friday and Saturday with potentially significant precipitation.
Heavy snow may fall in the Front Range Mountains, Foothills, and
Palmer Divide area late Friday into Saturday. This heavier snow is
expected to first develop in the northern tier of the Colorado
Front Range Mountains and Foothills toward mid day Friday, and
then spread southward toward the I-70 Corridor and Palmer Divide late
Friday afternoon and evening.

On the plains, rain will initially develop Friday afternoon and
evening, but temperatures are expected to become cold enough to
switch most of the precipitation over into the form of snow Friday
evening and overnight. At this time, temperatures are expected to
turn just cold enough for some snow accumulation on grassy
surfaces, with potential for a few inches along the I-25 Urban
Corridor from Denver to Fort Collins.

Travel will become hazardous over the mountains and higher
foothills as snow increases Friday afternoon and evening. On the
plains, some slush will be possible on roads during periods of
heavier snowfall. More difficult travel conditions can be expected
over the Palmer Divide area. The Front Range Mountains and
Foothills could see over a foot of snow Friday afternoon through
Saturday afternoon. The Palmer Divide may see snow amounts close
to a foot, Friday evening through Saturday afternoon.

After drier and warmer conditions Sunday, the next storm system
will likely impact the region Monday night into Tuesday with more
rain and snow.

Schlatter/Barjenbruch