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North America


Real-Time Data
Human Forecasts - Daily Briefing
Watches/Warnings 
Other Resources 
Computer Forecasts
wwus45 kbou 191955
wswbou
coz030-032-200400-
/o.new.kbou.ws.a.0013.141221t1900z-141223t0700z/
jackson county below 9000 feet-
grand and summit counties below 9000 feet-
including the cities of...gould...north park...rand...spicer...
walden...dillon...fraser...granby...grand lake...
hot sulphur springs...kremmling
1255 pm mst fri dec 19 2014
...winter storm watch in effect from sunday afternoon through
monday evening...
the national weather service in denver has issued a winter storm
watch...which is in effect from sunday afternoon through monday
evening.
* timing...snow is expected to develop sunday morning increasing
in intensity sunday afternoon and continuing into monday night.
the heaviest snow is expected to fall late sunday night into
early monday morning.
* snow accumulations...5 to 10 inches will be possible.
* wind/visibility...west winds of 10 to 20 mph gusting up to 35
mph will be possible.
* impacts...accumulating snow will result in snow and ice packed
roads and highways. the combination of snow and wind could
create some blowing snow that will decrease visibility.
precautionary/preparedness actions...
a winter storm watch means there is a potential for significant
snow that may impact travel. continue to monitor the latest
forecasts.
&&
$$
wwus45 kgjt 191849
wswgjt
coz010-200300-
/o.con.kgjt.ws.a.0020.141221t1300z-141223t0100z/
gore and elk mountains/central mountain valleys-
including the cities of...aspen...vail
1149 am mst fri dec 19 2014
...winter storm watch remains in effect from sunday morning
through monday afternoon...
* timing...snow is expected to develop sunday morning and
continue through monday. the heaviest snow should fall late
sunday afternoon through monday morning.
* snow accumulation...10 to 20 inches possible with locally
higher amounts along northwest facing slopes.
* winds...west 10 to 20 mph with gusts up to 35 mph.
* impacts...accumulating snow will result in icy and snow packed
roads and highways...especially over the mountain summits. the
combination of snow and fog will limit visibility below 1 mile
at times. areas of blowing and drifting snow will occur above
timberline.
precautionary/preparedness actions...
a winter storm watch means there is a potential for significant
snow accumulations and/or blowing snow that may impact travel.
continue to monitor the latest forecasts.
&&
$$
wwus45 klkn 192100
wswlkn
nvz031-201200-
/o.new.klkn.ww.y.0021.141220t0000z-141223t0000z/
northern elko county-
100 pm pst fri dec 19 2014
...winter weather advisory in effect from 4 pm this afternoon to
4 pm pst monday above 6500 feet...
the national weather service in elko has issued a winter weather
advisory for snow and blowing snow|above 6500 feet...which is in
effect from 4 pm this afternoon to 4 pm pst monday.
* snow accumulations: 8 to 18 inches through monday. locally 2
feet on favored mountains and northwest facing slopes.
* timing: the heaviest snow is expected from late saturday
afternoon through midday sunday. the strongest winds are
expected sunday into monday.
* other impacts: travel to the higher terrain will become
difficult beginning late saturday. heavy snow and blowing snow
will make travel very difficult...and outdoor recreation
dangerous...saturday night through sunday morning. snow and
strong west to northwest winds will continue sunday and monday.
precautionary/preparedness actions...
a winter weather advisory means that travel difficulties are
expected due to wintry conditions. be prepared for slippery roads
and limited visibilities...and use caution while driving. for the
latest road conditions call 511 or visit www.nvroads.com.
&&
$$
wwus45 kpih 191957
wswpih
idz019-023-025-031-032-201100-
/o.con.kpih.ws.a.0009.141221t0000z-141222t1200z/
upper snake highlands-caribou highlands-
wasatch mountains/idaho portion-big and little wood river region-
lost river/pahsimeroi-
including the locations of...driggs...island park...edie ranch...
monida pass...ashton hill...targhee pass...pine creek pass...
fish creek summit...grays lake nwr...georgetown...paris...
georgetown summit...sun valley...galena summit...
smiley creek lodge...arco...willow creek summit
1257 pm mst fri dec 19 2014
...winter storm watch remains in effect from saturday afternoon
through late sunday night above 7000 feet...
a winter storm watch above 6000 feet remains in effect from
saturday afternoon through late sunday night.
* timing...5 pm saturday through 5 am monday.
* main impact...6 to 10 inches of snow above 6000 feet with around a
foot possible above 7000 feet.
* locations include...driggs...island park...monida pass...
ashtonhill...targhee pass...pine creek pass...fish creek
summit... georgetown summit..galena summit...smiley creek
lodge...willow creek summit.
* other impacts...blowing and drifting snow with low
visibilitiespossible on sunday.
precautionary/preparedness actions...
a winter storm watch means there is a potential for significant
snow...sleet...or ice accumulations that may impact travel.
continue to monitor the latest forecasts.
&&
$$
wwus46 kpqr 191751
wswpqr
743
urgent - winter weather message
national weather service portland or
951 am pst fri dec 19 2014
waz019-200200-
/o.new.kpqr.ww.y.0028.141220t0000z-141220t2100z/
south washington cascades-
including the city of...mount st. helens
951 am pst fri dec 19 2014
...winter weather advisory in effect from 4 pm this afternoon to
1 pm pst saturday for the south washington cascades above 3500
feet...
the national weather service in portland has issued a winter
weather advisory for snow for the south washington cascades above
3500 feet...which is in effect from 4 pm this afternoon to 1 pm
pst saturday.
* timing...most snow accumulation will occur between this evening
and early saturday morning.
* accumulation/snow levels...snow levels 3500 to 4000 ft
tonight...rising to 4000 to 4500 ft saturday morning. 6 to 8
inches of snow is possible above 3500 ft.
* impacts...snow may cover roads and make travel difficult. brief
periods of heavier snow may limit visibility.
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.
&&
$$
wwus45 kriw 190956
wswriw
wyz002-014-015-025-200000-
/o.new.kriw.ws.a.0014.141221t0600z-141222t1800z/
absaroka mountains-wind river mountains west-
wind river mountains east-upper green river basin foothills-
including the city of...pinedale
256 am mst fri dec 19 2014
...winter storm watch in effect from saturday evening through
monday morning...
the national weather service in riverton has issued a winter
storm watch...which is in effect from saturday evening through
monday morning.
* summary and timing...snowfall will move over the central
mountains late saturday evening...and may become heavy on
sunday across the area before weakening on monday morning.
* snow accumulations...the foothills may receive 5 to 8 inches of
snowfall...with the highest accumulations anticipated northwest
of pinedale. the higher elevations may see 10 to 14 inches of
snowfall...with locally higher amounts possible.
* wind and visibility...west wind of 25 to 35 mph will impact the
mountainous areas with gusts to 45 mph in open areas while the
lower elevations see northwest wind increasing to 15 to 25 mph
on sunday with some stronger gusts. the wind and snowfall will limit
the visibility to under one half mile at times.
* impacts...areas potentially experiencing the combination of
gusty wind with snowfall may have limited visibility on
impacted roadways. additional significant snowfall may create
hazardous travel with snow-packed roadways.
precautionary/preparedness actions...
remember...a winter storm watch means conditions are favorable
for hazardous winter weather in and close to the watch area.
the latest road conditions provided by the wyoming department of
transportation are available by calling 5-1-1 or on the internet
at wyoroad.info.
&&
$$
wwus45 kslc 191704
wswslc
914
urgent - winter weather message
national weather service salt lake city ut
1004 am mst fri dec 19 2014
...heavy snow possible for the northern mountains for the latter
half of the upcoming weekend...
.a very moist northwest flow will set up across the northern
great basin during the latter half of the upcoming weekend. snow
will begin across the northern wasatch range late saturday
night...then spread south and east across the remainder of the
northern mountains by early sunday. this storm will produce
periods of heavy snow and strong ridgeline winds through early
monday. snow will gradually diminish monday afternoon...then end
most areas monday evening.
utz007>010-200030-
/o.con.kslc.ws.a.0005.141221t0900z-141223t0100z/
wasatch mountains i-80 north-wasatch mountains south of i-80-
western uinta mountains-wasatch plateau/book cliffs-
including the cities of...woodruff...randolph...alta...brighton...
mirror lake highway...scofield
1004 am mst fri dec 19 2014
...winter storm watch remains in effect from late saturday night
through monday afternoon...
* affected area...the wasatch and western uinta mountain ranges
and the wasatch plateau and book cliffs.
* snow accumulations...accumulations of 10 to 20 inches...with
locally greater amounts across the wasatch range.
* timing...snow will reach the northern wasatch mountains late
saturday night...then spread south and east across the
remainder of the northern mountains by early sunday. snow will
continue heavy at times through early monday...then gradually
decrease in intensity and areal coverage monday afternoon.
* snow levels...snow levels at the beginning of the storm will
be near 6000 feet. snow levels will rise to near 7000 feet
during the day sunday.
* winds...strong northwest winds will develop along ridgelines
and across exposed areas by late sunday morning. winds of 25
to 35 mph with gusts in excess of 50 mph are expected.
* impacts...heavy snow along with the potential for significant
blowing and drifting of snow will make for hazardous travel
conditions throughout this storm.
precautionary/preparedness actions...
a winter storm watch means there is a potential for significant
snow...sleet...or ice accumulations that may impact travel.
continue to monitor the latest forecasts.
&&
$$
wwus46 ksto 191238
wswsto
663
urgent - winter weather message
national weather service sacramento ca
438 am pst fri dec 19 2014
...another round of snow impacting the sierra today...
.a pacific cold front will move through northern california today
bringing periods of moderate to heavy snow to the higher elevations
of the sierra. light snowfall this morning will be followed by
heavier snowfall this afternoon and evening as the main cold
front moves through. this snowfall will likely cause travel delays
and possible chain restrictions especially during this high
volume travel time.
caz068-069-200045-
/o.con.ksto.ww.y.0020.000000t0000z-141220t0600z/
western plumas county/lassen park-
west slope northern sierra nevada-
438 am pst fri dec 19 2014
...winter weather advisory remains in effect until 10 pm pst this
evening above 6000 feet...
* snow accumulations: an additional 2 to 5 inches above 6000 feet with
up to 10 inches at the highest elevations.
* elevation: a few inches of snowfall may occur down to the 5000
foot level today with the heavier snowfall above the 6000 foot
level.
* timing: light snowfall early this morning with the heaviest snow
occurring late this morning into this evening.
* locations include: lassen national park...donner pass...echo
summit...carson pass.
* winds: south 10 to 15 mph with gusts up to 25 mph.
* impacts: road conditions will be slick due to snow. travel
delays expected with chain restrictions possible.
* for a detailed view of the hazard area...visit
http://www.weather.gov/sacramento/hazards.
precautionary/preparedness actions...
a winter weather advisory for snow means that periods of snow
will cause primarily travel difficulties. be prepared for snow
covered roads and limited visibility...and use caution while
driving.
&&
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$$

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