Winter Storm Warning 1, NWS Juneau, AK

670 
WWAK47 PAJK 130706
WSWAJK

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE JUNEAU AK
1006 PM AKST THU JAN 12 2017


AKZ018-019-131500-
/O.CON.PAJK.WS.W.0001.170113T1800Z-170114T1800Z/
TAIYA INLET AND KLONDIKE HIGHWAY-HAINES BOROUGH AND LYNN CANAL-
INCLUDING THE CITIES OF...SKAGWAY...HAINES
1006 PM AKST THU JAN 12 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM FRIDAY TO
9 AM AKST SATURDAY...

* LOCATION...ALONG THE HAINES HIGHWAY AND KLONDIKE HIGHWAY 
  MAINLY NEAR THE BORDER. 

* SNOW...SNOWFALL ACCUMULATING 12 TO 18 INCHES BY SATURDAY 
  MORNING.

* TIMING...SNOW WILL START FRIDAY MORNING AND PERSIST INTO EARLY 
  SATURDAY. 

* IMPACTS...TRAVEL MAY BE HAZARDOUS DURING THE EVENT DUE TO SNOW 
  AND BLOWING SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WARNING MEANS THAT A WINTER STORM IS ALREADY OCCURRING OR
IMMINENT. THIS STORM COULD POSE A THREAT TO LIFE AND PROPERTY.

THIS STATEMENT WILL BE UPDATED BY 6 AM AKST FRI OR SOONER IF
CONDITIONS WARRANT.

&&

$$

AKZ029-131500-
/O.CON.PAJK.WW.Y.0003.170113T1800Z-170114T1800Z/
MISTY FJORDS-
INCLUDING THE CITY OF...HYDER
1006 PM AKST THU JAN 12 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM FRIDAY TO
9 AM AKST SATURDAY...

* LOCATION...MAINLY NEAR HYDER.

* SNOW...8 TO 12 INCHES EXPECTED TO FALL BEFORE SATURDAY MORNING.

* TIMING...SNOW WILL INCREASE FRIDAY AND BEGIN TO TAPER TOWARDS 
  SATURDAY MORNING. 

* IMPACTS...TRAVEL MAY BE HAZARDOUS DUE TO SNOW ACCUMULATIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ADVISORY MEANS THAT A POTENTIALLY HAZARDOUS EVENT IS ALREADY
OCCURRING OR IMMINENT.

THIS STATEMENT WILL BE UPDATED BY 6 AM AKST FRI OR SOONER IF
CONDITIONS WARRANT.

&&

$$

061 
WWAK47 PAJK 131252
WSWAJK

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE JUNEAU AK
352 AM AKST FRI JAN 13 2017

AKZ018-019-140100-
/O.CON.PAJK.WS.W.0001.170113T1800Z-170114T1800Z/
TAIYA INLET AND KLONDIKE HIGHWAY-HAINES BOROUGH AND LYNN CANAL-
INCLUDING THE CITIES OF...SKAGWAY...HAINES
352 AM AKST FRI JAN 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 9 AM AKST SATURDAY...

* LOCATION...ALONG THE HAINES HIGHWAY AND KLONDIKE HIGHWAY 
  MAINLY NEAR THE BORDER. 

* SNOW...SNOWFALL ACCUMULATING 12 TO 18 INCHES BY SATURDAY 
  MORNING. 

* TIMING...SNOW WILL START FRIDAY MORNING AND PERSIST INTO EARLY 
  SATURDAY. 

* IMPACTS...TRAVEL MAY BE HAZARDOUS DURING THE EVENT DUE TO SNOW 
  AND BLOWING SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WARNING MEANS THAT A WINTER STORM IS ALREADY OCCURRING OR
IMMINENT. THIS STORM COULD POSE A THREAT TO LIFE AND PROPERTY.

THIS STATEMENT WILL BE UPDATED BY 4 PM AKST FRI OR SOONER IF
CONDITIONS WARRANT.

&&

$$

AKZ029-140100-
/O.CON.PAJK.WW.Y.0003.170113T1800Z-170114T1800Z/
MISTY FJORDS-
INCLUDING THE CITY OF...HYDER
352 AM AKST FRI JAN 13 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM THIS
MORNING TO 9 AM AKST SATURDAY...

* LOCATION...MAINLY NEAR HYDER.

* SNOW...8 TO 12 INCHES EXPECTED TO FALL BEFORE SATURDAY MORNING.

* TIMING...SNOW WILL INCREASE FRIDAY THEN BEGIN TO TAPER OFF TOWARDS
  SATURDAY MORNING.

* IMPACTS...TRAVEL MAY BE HAZARDOUS DUE TO SNOW ACCUMULATIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ADVISORY MEANS THAT A POTENTIALLY HAZARDOUS EVENT IS ALREADY
OCCURRING OR IMMINENT.

THIS STATEMENT WILL BE UPDATED BY 4 PM AKST FRI OR SOONER IF
CONDITIONS WARRANT.

&&

$$

494 
WWAK47 PAJK 140050
WSWAJK

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE JUNEAU AK
350 PM AKST FRI JAN 13 2017

AKZ019-140200-
/O.CAN.PAJK.WS.W.0001.000000T0000Z-170114T1800Z/
HAINES BOROUGH AND LYNN CANAL-
INCLUDING THE CITY OF...HAINES
350 PM AKST FRI JAN 13 2017

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN JUNEAU HAS CANCELLED THE WINTER
STORM WARNING. 

TEMPERATURES HAVE WARMED AND THE PRECIPITATION HAS CHANGED TO
RAIN ALONG THE HAINES HIGHWAY. AS OF 8 AM THIS MORNING THE HAINES
CUSTOMS HAD RECEIVED 7.1 INCHES OF SNOW AND IT CONTINUED TO SNOW
UNTIL THE EARLY AFTERNOON.

THIS WILL BE THE FINAL STATEMENT ON THIS EVENT.

$$

AKZ018-141530-
/O.CON.PAJK.WS.W.0001.000000T0000Z-170114T1800Z/
TAIYA INLET AND KLONDIKE HIGHWAY-
INCLUDING THE CITY OF...SKAGWAY
350 PM AKST FRI JAN 13 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM AKST
SATURDAY...

* LOCATION...ALONG THE KLONDIKE HIGHWAY MAINLY NEAR WHITE PASS.

* SNOW...SNOWFALL ACCUMULATING 12 TO 18 INCHES BY SATURDAY
  MORNING. NEARLY 5 INCHES OF SNOW HAD FALLEN NEAR WHITE PASS BY
  EARLY FRIDAY AFTERNOON.

* TIMING...SNOW WILL PERSIST INTO EARLY SATURDAY.

* IMPACTS...TRAVEL MAY BE HAZARDOUS DURING THE EVENT DUE TO SNOW
  AND BLOWING SNOW. VISIBILITY IN BLOWING SNOW NEAR WHITE PASS WAS
  NEAR ZERO FRIDAY AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WARNING MEANS THAT A WINTER STORM IS ALREADY OCCURRING OR
IMMINENT. THIS STORM COULD POSE A THREAT TO LIFE AND PROPERTY.

THIS STATEMENT WILL BE UPDATED BY 6 AM AKST SAT OR SOONER IF
CONDITIONS WARRANT.

&&

$$

AKZ029-141530-
/O.CON.PAJK.WW.Y.0003.000000T0000Z-170114T1800Z/
MISTY FJORDS-
INCLUDING THE CITY OF...HYDER
350 PM AKST FRI JAN 13 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM AKST
SATURDAY...

* LOCATION...MAINLY NEAR HYDER.

* SNOW...8 TO 12 INCHES EXPECTED TO FALL THROUGH SATURDAY
  MORNING. JUST OVER 6 INCHES OF SNOW HAD FALLEN IN HYDER AS OF 8
  AM FRIDAY MORNING.

* TIMING...SNOW WILL CONTINUE OVERNIGHT AND TAPER OFF TOWARDS
  SATURDAY MORNING.

* IMPACTS...TRAVEL MAY BE HAZARDOUS DUE TO SNOW ACCUMULATIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ADVISORY MEANS THAT A POTENTIALLY HAZARDOUS EVENT IS ALREADY
OCCURRING OR IMMINENT.

THIS STATEMENT WILL BE UPDATED BY 6 AM AKST SAT OR SOONER IF
CONDITIONS WARRANT.

&&

$$

179 
WWAK47 PAJK 141324
WSWAJK

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE JUNEAU AK
424 AM AKST SAT JAN 14 2017

AKZ018-141800-
/O.CON.PAJK.WS.W.0001.000000T0000Z-170114T1800Z/
TAIYA INLET AND KLONDIKE HIGHWAY-
INCLUDING THE CITY OF...SKAGWAY
424 AM AKST SAT JAN 14 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM AKST THIS
MORNING...

* LOCATION...ALONG THE KLONDIKE HIGHWAY MAINLY NEAR WHITE PASS.

* SNOW...ADDITIONAL SNOWFALL OF 3 TO 5 INCHES SATURDAY MORNING.
  TOTAL SNOWFALL OF 12 TO 18 INCHES.

* TIMING...SNOW WILL PERSIST INTO EARLY SATURDAY.

* IMPACTS...TRAVEL MAY BE HAZARDOUS DURING THE EVENT DUE TO SNOW
  AND BLOWING SNOW. VISIBILITY IN BLOWING SNOW NEAR WHITE PASS
  BELOW ONE HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WARNING MEANS THAT A WINTER STORM IS ALREADY OCCURRING OR
IMMINENT. THIS STORM COULD POSE A THREAT TO LIFE AND PROPERTY.

THIS STATEMENT WILL BE UPDATED BY 9 AM AKST SAT OR SOONER IF
CONDITIONS WARRANT.

&&

$$

AKZ029-141800-
/O.EXT.PAJK.WW.Y.0003.000000T0000Z-170114T2100Z/
MISTY FJORDS-
INCLUDING THE CITY OF...HYDER
424 AM AKST SAT JAN 14 2017

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL NOON AKST TODAY...

* LOCATION...MAINLY NEAR HYDER.

* SNOW...ADDITIONAL SNOWFALL OF 4 TO 6 INCHES THROUGH LATE
  SATURDAY MORNING. TOTAL SNOWFALL OF 8 TO 12 INCHES EXPECTED.

* TIMING...SNOW WILL TAPER OFF LATE SATURDAY MORNING AND BEGIN TO
  CHANGE TO RAIN.

* IMPACTS...TRAVEL MAY BE HAZARDOUS DUE TO SNOW ACCUMULATIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ADVISORY MEANS THAT A POTENTIALLY HAZARDOUS EVENT IS ALREADY
OCCURRING OR IMMINENT.

THIS STATEMENT WILL BE UPDATED BY 9 AM AKST SAT OR SOONER IF
CONDITIONS WARRANT.

&&

$$

722 
WWAK47 PAJK 141757
WSWAJK

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE JUNEAU AK
857 AM AKST SAT JAN 14 2017

AKZ029-150600-
/O.UPG.PAJK.WW.Y.0003.000000T0000Z-170114T2100Z/
/O.EXB.PAJK.WS.W.0001.000000T0000Z-170115T1500Z/
MISTY FJORDS-
INCLUDING THE CITY OF...HYDER
857 AM AKST SAT JAN 14 2017

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM AKST SUNDAY...

THE NATIONAL WEATHER SERVICE IN JUNEAU HAS ISSUED A WINTER STORM
WARNING...WHICH IS IN EFFECT UNTIL 6 AM AKST SUNDAY. THE WINTER
WEATHER ADVISORY IS NO LONGER IN EFFECT. 

* LOCATION...MAINLY NEAR HYDER.

* SNOW...ADDITIONAL SNOWFALL OF 5 TO 8 INCHES THROUGH SATURDAY
  NIGHT. TOTAL SNOWFALL OF 18 TO 24 INCHES EXPECTED.

* TIMING...SNOW WILL TAPER OFF LATE SATURDAY NIGHT AND BEGIN TO
  CHANGE TO RAIN.

* IMPACTS...TRAVEL MAY BE HAZARDOUS DUE TO SNOW ACCUMULATIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WARNING MEANS THAT A WINTER STORM IS ALREADY OCCURRING OR
IMMINENT. THIS STORM COULD POSE A THREAT TO LIFE AND PROPERTY.

THIS STATEMENT WILL BE UPDATED BY 4 PM AKST SAT OR SOONER IF
CONDITIONS WARRANT.

&&

$$

AKZ018-150100-
/O.EXT.PAJK.WS.W.0001.000000T0000Z-170115T0100Z/
TAIYA INLET AND KLONDIKE HIGHWAY-
INCLUDING THE CITY OF...SKAGWAY
857 AM AKST SAT JAN 14 2017

...WINTER STORM WARNING NOW IN EFFECT UNTIL 4 PM AKST THIS
AFTERNOON...

* LOCATION...ALONG THE KLONDIKE HIGHWAY MAINLY NEAR WHITE PASS.

* SNOW...ADDITIONAL SNOWFALL OF 2 TO 4 INCHES SATURDAY MORNING.
  TOTAL SNOWFALL OF 12 TO 16 INCHES.

* TIMING...SNOW WILL CONTINUE TO SATURDAY AFTERNOON.

* IMPACTS...TRAVEL MAY BE HAZARDOUS DURING THE EVENT DUE TO SNOW 
  AND BLOWING SNOW. VISIBILITY IN BLOWING SNOW NEAR WHITE PASS 
  BELOW ONE HALF MILE AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WARNING MEANS THAT A WINTER STORM IS ALREADY OCCURRING OR
IMMINENT. THIS STORM COULD POSE A THREAT TO LIFE AND PROPERTY.

THIS STATEMENT WILL BE UPDATED BY 4 PM AKST SAT OR SOONER IF
CONDITIONS WARRANT.

&&

$$

987 
WWAK47 PAJK 142342
WSWAJK

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE JUNEAU AK
242 PM AKST SAT JAN 14 2017


AKZ029-151145-
/O.CAN.PAJK.WS.W.0001.000000T0000Z-170115T1500Z/
/O.NEW.PAJK.WS.W.0002.170115T0000Z-170115T1500Z/
MISTY FJORDS-
INCLUDING THE CITY OF...HYDER
242 PM AKST SAT JAN 14 2017

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM AKST SUNDAY...

THE NATIONAL WEATHER SERVICE IN JUNEAU HAS ISSUED A WINTER STORM
WARNING...WHICH IS IN EFFECT UNTIL 6 AM AKST SUNDAY. 

* LOCATION...MAINLY NEAR HYDER.

* SNOW...ADDITIONAL SNOWFALL OF 5 TO 8 INCHES THROUGH SATURDAY 
  NIGHT. TOTAL SNOWFALL OF 18 TO 24 INCHES EXPECTED. 

* TIMING...SNOW WILL TAPER OFF LATE SATURDAY NIGHT AND BEGIN TO 
  CHANGE TO RAIN. 

* IMPACTS...TRAVEL MAY BE HAZARDOUS DUE TO SNOW ACCUMULATIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WARNING MEANS THAT A WINTER STORM IS ALREADY OCCURRING OR
IMMINENT. THIS STORM COULD POSE A THREAT TO LIFE AND PROPERTY.

THIS STATEMENT WILL BE UPDATED BY 5 AM AKST SUN OR SOONER IF
CONDITIONS WARRANT.

&&

$$

AKZ018-150045-
/O.CAN.PAJK.WS.W.0001.000000T0000Z-170115T0100Z/
TAIYA INLET AND KLONDIKE HIGHWAY-
INCLUDING THE CITY OF...SKAGWAY
242 PM AKST SAT JAN 14 2017

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN JUNEAU HAS CANCELLED THE WINTER
STORM WARNING. 

THE HEAVY SNOW NEAR WHITE PASS HAS LESSENED AND THE WINDS HAVE
BEGUN TO DIMINISH OVER THE PASS. VISIBILITIES WHILE STILL BELOW A
HALF MILE AT TIMES HAVE IMPROVED. CONDITIONS WILL CONTINUE TO
IMPROVE SLOWLY THROUGH THE EVENING.

THIS WILL BE THE FINAL STATEMENT ON THIS EVENT. 

$$

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
549 AM AKST Thu Jan 12 2017

.SHORT TERM...Multiple changes made to previous forecast due to
latest model guidance and overnight observations. Changes were
most notable in temps, precip type, snow amounts and winds
today/tonight. The NAM and Hi- res NMM were the models of choice.

Synoptically the most important features for Southeast Alaska over
the next 24 hours will be a weak low over the northern gulf,
sharpening surface ridge through the inner channels, and a gale
force front moving into the east central gulf late tonight. That
front will be covered more in the long term section.

Increasing low level southerly flow has led to moderating
temperatures overnight panhandle wide. This will continue through
the morning as flow continues to increase from the south. Before
it does so, some light snow accumulation is possible as the
boundary layer moisture continues to deepen. Unfortunately for
snow lovers, the southerly flow is going to win out with most sea
level locations transitioning over to rain by early afternoon. It
will take a bit longer in Haines and Skagway but the sharpening
ridge will increase winds in those areas later in the afternoon.
Some snow will linger in areas such as the Mendenhall Valley and
Petersburg through the afternoon. Based upon all of this,
precipitation was transitioned over to rain quicker and snow
amounts were significantly reduced in this forecast package.

Strong southerly winds will progress northward as the surface
ridge sharpens over the panhandle through the day and into
tonight. Winds were increased 5-10 kt in many of the inner
channels and over several land areas. Expect small craft
conditions to develop this afternoon in Lynn Canal and Stephens
Passage. Southwesterly gusts will increase to 40-45 mph in
Skagway late in the afternoon/early evening and persist through
late tonight.

As mentioned above, temperatures have risen overnight and will
continue to do so. Thursday afternoon highs were raised 3-5
degrees in many areas especially over the northern and central
panhandle. Lows for Thursday night/Friday morning were also
raised 5-10 degrees as we expect them to remain steady from the
afternoon highs with persistent southerly flow.

.LONG TERM...Rather active weather pattern through the long
range. Series of strong low pressure systems move in to the AK
gulf following similar tracks. These system bring in strong winds
and heavy rain. Warming trend continues through the weekend
keeping precip mostly as rain at lower elevations before potential
transition back to cooler temps mid week.

Kept with the trend to increase winds for the Friday system with
associated gale force front. As the parent low tracks
northeastward into the Yukon strong southerly flow continues into
Saturday. For now held off on the wide spread gales for the inner
channels but there is the potential. If MOS guidance is correct,
which is sometimes is, temperatures will be steady or have a
slight increase into Saturday. Getting min and max temps in the
upper 30s to low 40s for almost all of the panhandle from the
southerly flow. Large fetch of tropical moisture seen in model
sounding deep saturated layer so expect heavy rain, especially
along the coast. Backed off on snow at lower elevations with the
warmer air mass but have possible snow amounts of 6 to 12 inches
along the Haines and Klondike highways and a winter weather watch
From Friday afternoon into Saturday morning. Just wasn't getting
snow amounts near Hyder to keep them in the winter weather watch,
but still expect a few inches of accumulation.

Next system moves into the western gulf Sunday with its gale
force front reaching the eastern gulf Sunday night into Monday.
Brief break in weather over the panhandle between these two
systems. Since models still show large spread and run to run
differences held off on making wholesale changes to the later
grids. Yet another low moves in mid week, and if it has a more
southerly track could have a shift in winds to more northerly and
a drop in temps. But more indication that it will follow a
similar northeasterly track to the previous lows.

Used a blend of NAM and Hi res NAM initially to refresh grids.
Slight increase to winds but main changes was to bump up temps and
snow levels due to new model data incorporating the south flow.
Later periods decided to use the ECMWF since GFS, while close in
position, was on the stronger side. Expect day 4 forecast and
beyond to have even more changes with the next packages once
models begin to fall in line. Forecast confidence is low due as
models continue shift run to run.

&&

.AJK Watches/Warnings/Advisories...
PUBLIC...Winter Storm Watch from Friday afternoon through Saturday
     morning for AKZ018-019.
     Strong Wind from this evening through late tonight for AKZ018.
MARINE...Small Craft Advisory for PKZ012-013-031-041>043-051-052.
&&

TPS/PRB

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