Gale Warning 142, NWS Juneau, AK

927 
FZAK52 PAJK 291206
CWFAEG

COASTAL WATERS FORECAST FOR SOUTHEAST ALASKA
NATIONAL WEATHER SERVICE JUNEAU AK
406 AM AKDT SAT APR 29 2017

SOUTHEAST ALASKA COASTAL WATERS FROM DIXON ENTRANCE TO
CAPE SUCKLING OUT 100 NM

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEAS FORECASTS REPRESENT THE AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WINDWAVE AND SWELL HEIGHT.

PKZ099-300615-
406 AM AKDT SAT APR 29 2017
.SYNOPSIS FOR OUTSIDE WATERS...
A DEVELOPING GALE FORCE LOW WILL MOVE ACROSS HAIDA GWAII SAT
AFTERNOON AND EVENING DISSIPATING NEAR HECATE STRAIT SAT NIGHT.
A HIGH PRESSURE RIDGE WILL BRIEFLY MOVE OVER THE OUTSIDE WATERS
SUNDAY. A MODERATE FRONT WILL MOVE INTO THE GULF ON MON.  

$$

PKZ041-300615-
DIXON ENTRANCE TO CAPE DECISION-
406 AM AKDT SAT APR 29 2017

...GALE WARNING THROUGH THIS AFTERNOON...

.TODAY...E WIND INCREASING TO 30 KT. SEAS 11 FT. RAIN.
.TONIGHT...NW WIND 25 KT. SEAS 11 FT. 
.SUN...W WIND 15 KT. SEAS 7 FT. 
.SUN NIGHT...SW WIND 15 KT. SEAS 6 FT. 
.MON...S WIND 15 KT. SEAS 8 FT. 
.TUE...SE GALE TO 35 KT. SEAS 11 FT BUILDING TO 16 FT. 
.WED...S WIND 30 KT. SEAS 18 FT. 

$$

PKZ042-300615-
CAPE DECISION TO CAPE EDGECUMBE-
406 AM AKDT SAT APR 29 2017

...SMALL CRAFT ADVISORY THROUGH THIS MORNING...
...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT...

.TODAY...NE WIND 15 KT. SEAS 8 FT. 
.TONIGHT...NW WIND 25 KT. SEAS 9 FT. 
.SUN...W WIND 20 KT. SEAS 8 FT SUBSIDING TO 5 FT IN THE
AFTERNOON. 
.SUN NIGHT...SW WIND 15 KT. SEAS 5 FT. 
.MON...S WIND 20 KT. SEAS 8 FT. 
.TUE...SE GALE TO 35 KT. SEAS 11 FT BUILDING TO 17 FT. 
.WED...S WIND 30 KT. SEAS 18 FT. 

$$

PKZ043-300615-
CAPE EDGECUMBE TO CAPE FAIRWEATHER-
406 AM AKDT SAT APR 29 2017

...SMALL CRAFT ADVISORY DUE TO SEAS THIS EVENING...

.TODAY...NE WIND 10 KT. SEAS 6 FT. 
.TONIGHT...NW WIND 20 KT. SEAS 8 FT. 
.SUN...W WIND 10 KT. SEAS 6 FT. SW SWELL IN THE MORNING. 
.SUN NIGHT...SE WIND 20 KT. SEAS 6 FT. RAIN.
.MON...SE WIND 25 KT BECOMING S 15 KT. SEAS 8 FT. 
.TUE...SE WIND 25 KT BECOMING E GALE TO 35 KT. SEAS 11 FT
BUILDING TO 18 FT. 
.WED...S WIND 25 KT. SEAS 18 FT. 

$$

PKZ051-300615-
CAPE FAIRWEATHER TO ICY CAPE-
406 AM AKDT SAT APR 29 2017

.TODAY...E WIND 20 KT BECOMING W IN THE AFTERNOON. SEAS 5 FT. 
.TONIGHT...W WIND 15 KT. SEAS 6 FT. 
.SUN...SW WIND 10 KT. SEAS 6 FT. 
.SUN NIGHT...SE WIND 20 KT. SEAS 6 FT. RAIN.
.MON...S WIND 20 KT. SEAS 9 FT. 
.TUE...E WIND 25 KT. SEAS 9 FT BUILDING TO 18 FT. 
.WED...SE WIND 25 KT. SEAS 18 FT. 

$$

PKZ052-300615-
ICY CAPE TO CAPE SUCKLING-
406 AM AKDT SAT APR 29 2017

...SMALL CRAFT ADVISORY THROUGH THIS MORNING...

.TODAY...E WIND 25 KT BECOMING SE 10 KT IN THE AFTERNOON. SEAS
5 FT. 
.TONIGHT...W WIND 10 KT. SEAS 5 FT. 
.SUN...S WIND 10 KT. SEAS 6 FT. 
.SUN NIGHT...SE WIND 25 KT. SEAS 7 FT. RAIN.
.MON...SE WIND 30 KT DIMINISHING TO 20 KT. SEAS 9 FT. 
.TUE...E WIND 25 KT INCREASING TO GALE TO 35 KT. SEAS 8 FT
BUILDING TO 18 FT. 
.WED...E WIND 25 KT. SEAS 18 FT. 

$$

861 
FZAK52 PAJK 291954 AAA
CWFAEG

COASTAL WATERS FORECAST FOR SOUTHEAST ALASKA...UPDATED
NATIONAL WEATHER SERVICE JUNEAU AK
1154 AM AKDT SAT APR 29 2017

SOUTHEAST ALASKA COASTAL WATERS FROM DIXON ENTRANCE TO
CAPE SUCKLING OUT 100 NM

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEAS FORECASTS REPRESENT THE AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WINDWAVE AND SWELL HEIGHT.

PKZ099-300100-
1154 AM AKDT SAT APR 29 2017
.SYNOPSIS FOR OUTSIDE WATERS...
A GALE FORCE LOW OVER HAIDA GWAII WILL RAPIDLY WEAKEN AS IT
MOVES NE INTO BC. A HIGH PRESSURE RIDGE WILL BRIEFLY MOVE  OVER
THE OUTSIDE WATERS AND PANHANDLE SUN INTO MON. A MODERATE  FRONT
WILL MOVE INTO THE GULF FROM THE W ON MON.  

$$

PKZ041-300100-
DIXON ENTRANCE TO CAPE DECISION-
1154 AM AKDT SAT APR 29 2017

UPDATED

...GALE WARNING THROUGH THIS AFTERNOON...

.REST OF TODAY...E WIND TO 35 KT...STRONGEST OVER THE FAR SOUTH. 
SEAS 11 FT. RAIN.
.TONIGHT...NW WIND 25 KT. SEAS 11 FT. 
.SUN...W WIND 15 KT. SEAS 7 FT. 
.SUN NIGHT...SW WIND 15 KT. SEAS 6 FT. 
.MON...S WIND 15 KT. SEAS 8 FT. 
.TUE...SE GALE TO 35 KT. SEAS 11 FT BUILDING TO 16 FT. 
.WED...S WIND 30 KT. SEAS 18 FT.

$$

PKZ042-300100-
CAPE DECISION TO CAPE EDGECUMBE-
1154 AM AKDT SAT APR 29 2017

UPDATED

...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT...

.REST OF TODAY...NE WIND 20 KT. SEAS 8 FT.
.TONIGHT...NW WIND 25 KT. SEAS 9 FT. 
.SUN...W WIND 20 KT. SEAS 8 FT SUBSIDING TO 5 FT IN THE
AFTERNOON. 
.SUN NIGHT...SW WIND 15 KT. SEAS 5 FT. 
.MON...S WIND 20 KT. SEAS 8 FT. 
.TUE...SE GALE TO 35 KT. SEAS 11 FT BUILDING TO 17 FT. 
.WED...S WIND 30 KT. SEAS 18 FT.

$$

PKZ043-300100-
CAPE EDGECUMBE TO CAPE FAIRWEATHER-
1154 AM AKDT SAT APR 29 2017

UPDATED

...SMALL CRAFT ADVISORY DUE TO SEAS THIS EVENING...

.REST OF TODAY...NE WIND 15 KT. SEAS 6 FT. 
.TONIGHT...NW WIND 20 KT. SEAS 8 FT SUBSIDING LATE. 
.SUN...W WIND 10 KT. SEAS 6 FT. SW SWELL IN THE MORNING. 
.SUN NIGHT...SE WIND 20 KT. SEAS 6 FT. RAIN.
.MON...SE WIND 25 KT BECOMING S 15 KT. SEAS 8 FT. 
.TUE...SE WIND 25 KT BECOMING E GALE TO 35 KT. SEAS 11 FT
BUILDING TO 18 FT. 
.WED...S WIND 25 KT. SEAS 18 FT.

$$

PKZ051-300100-
CAPE FAIRWEATHER TO ICY CAPE-
1154 AM AKDT SAT APR 29 2017

UPDATED

.REST OF TODAY...E WIND 10 KT BECOMING NW 15 KT IN THE AFTERNOON.
SEAS 5 FT. 
.TONIGHT...W WIND 15 KT. SEAS 6 FT. 
.SUN...SW WIND 10 KT. SEAS 6 FT. 
.SUN NIGHT...SE WIND 20 KT. SEAS 6 FT. RAIN.
.MON...S WIND 20 KT. SEAS 9 FT. 
.TUE...E WIND 25 KT. SEAS 9 FT BUILDING TO 18 FT. 
.WED...SE WIND 25 KT. SEAS 18 FT.

$$

PKZ052-300100-
ICY CAPE TO CAPE SUCKLING-
1154 AM AKDT SAT APR 29 2017

UPDATED

.REST OF TODAY...SE WIND 15 KT BECOMING VARIABLE TO 10 KT IN THE
AFTERNOON. SEAS 5 FT.
.TONIGHT...W WIND 10 KT. SEAS 5 FT. 
.SUN...S WIND 10 KT. SEAS 6 FT. 
.SUN NIGHT...SE WIND 25 KT. SEAS 7 FT. RAIN.
.MON...SE WIND 30 KT DIMINISHING TO 20 KT. SEAS 9 FT. 
.TUE...E WIND 25 KT INCREASING TO GALE TO 35 KT. SEAS 8 FT
BUILDING TO 18 FT. 
.WED...E WIND 25 KT. SEAS 18 FT.

$$

437 
FZAK52 PAJK 292303
CWFAEG

COASTAL WATERS FORECAST FOR SOUTHEAST ALASKA
NATIONAL WEATHER SERVICE JUNEAU AK
303 PM AKDT SAT APR 29 2017

SOUTHEAST ALASKA COASTAL WATERS FROM DIXON ENTRANCE TO
CAPE SUCKLING OUT 100 NM

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEAS FORECASTS REPRESENT THE AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WINDWAVE AND SWELL HEIGHT.

PKZ099-301715-
303 PM AKDT SAT APR 29 2017
.SYNOPSIS FOR OUTSIDE WATERS...
A GALE FORCE LOW OVER HAIDA GWAII WILL RAPIDLY WEAKEN AS IT
MOVES NE INTO BC. A HIGH PRESSURE RIDGE WILL BRIEFLY MOVE OVER 
THE OUTSIDE WATERS AND PANHANDLE SUN INTO MON. A MODERATE STRENGTH
FRONT WILL MOVE INTO THE GULF FROM THE W ON MON. 

$$

PKZ041-301715-
DIXON ENTRANCE TO CAPE DECISION-
303 PM AKDT SAT APR 29 2017

...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT...

.TONIGHT...NE WIND 25 KT BECOMING NW LATE. SEAS 11 FT. RAIN EARLY
IN THE EVENING.
.SUN...W WIND 15 KT. SEAS 7 FT. 
.SUN NIGHT...S WIND 15 KT. SEAS 6 FT. 
.MON...S WIND 25 KT. SEAS 9 FT. 
.MON NIGHT...S WIND 20 KT. SEAS 9 FT. SW SWELL. 
.TUE...S WIND 30 KT. SEAS 11 FT BUILDING TO 16 FT. 
.WED...S WIND 25 KT. SEAS 18 FT. 
.THU...S WIND 20 KT. SEAS 12 FT. 

$$

PKZ042-301715-
CAPE DECISION TO CAPE EDGECUMBE-
303 PM AKDT SAT APR 29 2017

...SMALL CRAFT ADVISORY DUE TO SEAS THROUGH LATE TONIGHT...

.TONIGHT...NW WIND 20 KT. SEAS 9 FT. 
.SUN...W WIND 20 KT. SEAS 7 FT. 
.SUN NIGHT...S WIND 15 KT. SEAS 6 FT. 
.MON...S WIND 25 KT. SEAS 9 FT. 
.MON NIGHT...S WIND 20 KT. SEAS 9 FT. SW SWELL. 
.TUE...SE GALE TO 35 KT. SEAS 11 FT BUILDING TO 17 FT. 
.WED...S WIND 25 KT. SEAS 18 FT. 
.THU...SW WIND 15 KT. SEAS 13 FT. 

$$

PKZ043-301715-
CAPE EDGECUMBE TO CAPE FAIRWEATHER-
303 PM AKDT SAT APR 29 2017

.TONIGHT...NW WIND 15 KT. SEAS 7 FT. S SWELL LATE. 
.SUN...SW WIND 10 KT. SEAS 6 FT. 
.SUN NIGHT...S WIND 20 KT. SEAS 6 FT. 
.MON...S WIND 20 KT. SEAS 8 FT. RAIN.
.MON NIGHT...S WIND 15 KT. SEAS 8 FT. SW SWELL. 
.TUE...SE WIND 25 KT INCREASING TO GALE TO 40 KT. SEAS 11 FT
BUILDING TO 18 FT. 
.WED...S WIND 25 KT. SEAS 18 FT. 
.THU...S WIND 20 KT. SEAS 15 FT. 

$$

PKZ051-301715-
CAPE FAIRWEATHER TO ICY CAPE-
303 PM AKDT SAT APR 29 2017

.TONIGHT...W WIND 15 KT. SEAS 6 FT. 
.SUN...SW WIND 10 KT. SEAS 6 FT. 
.SUN NIGHT...SE WIND 15 KT. SEAS 6 FT. RAIN LATE. 
.MON...SE WIND 25 KT. SEAS 8 FT. RAIN.
.MON NIGHT...S WIND 15 KT. SEAS 8 FT. SW SWELL. RAIN.
.TUE...SE WIND 25 KT BECOMING E GALE TO 40 KT. SEAS 9 FT
BUILDING TO 18 FT. 
.WED...SE WIND 25 KT. SEAS 18 FT. 
.THU...S WIND 15 KT. SEAS 17 FT. 

$$

PKZ052-301715-
ICY CAPE TO CAPE SUCKLING-
303 PM AKDT SAT APR 29 2017

.TONIGHT...LIGHT WINDS BECOMING W 10 KT IN THE EVENING.
SEAS 5 FT.
.SUN...S WIND 10 KT. SEAS 6 FT. 
.SUN NIGHT...SE WIND 25 KT. SEAS 7 FT. RAIN LATE. 
.MON...E WIND 30 KT. GUSTS TO 45 KT. SEAS 10 FT. RAIN.
.MON NIGHT...SE WIND 15 KT. SEAS 8 FT. SW SWELL. 
.TUE...E WIND 25 KT INCREASING TO GALE TO 40 KT. SEAS 8 FT
BUILDING TO 18 FT. 
.WED...E WIND 20 KT. SEAS 18 FT. 
.THU...SE WIND 10 KT. SEAS 17 FT. 

$$

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
254 PM AKDT Fri Apr 28 2017

.SHORT TERM.../Through Sunday/A high pressure ridge over SE AK
will weaken and drift NE tonight. A weak occluded front over the
central gulf will move to the northern gulf tonight, then
dissipate there Sat. A strong low will move NE to Haida Gwaii by
Sat afternoon, then turn E to the central BC coast while weakening
rapidly Sat night. A weak upper trof will move NE across the area
Sun. Used 12z GFS/NAM blend to handle things through Sun.

Main forecast concerns will be precip potential and winds. Showers
going on over the area will diminish tonight as low level flow
becomes more offshore. Rain with strong low will move NE into the
far southern area Sat. Models differ some on how far N the rain
will get. GFS/NAM basically limit it to the southern 3 zones, but
some rain could get into the far S part of 23 and 26 as well. AS
low moves out Sat evening, the rain should diminish over the far
south. For Sun, upper trof moving in may be strong enough for some
spotty rain over the area. Have generally chance POPs to handle
this on Sun.

Winds will be diminishing over the N this evening while
increasing over the S late tonight and Sat. Over the N, 15-20 KT
S-W winds should become fairly light for a bit by late evening,
then turn more N-E around 10-15 KT late tonight. They will
increase a bit more Sat to 15-20 KT over much of the N and central
area. Over the S, as low moves toward them, winds will become more
E-NE and increase to 15-25 KT by late tonight, then to 25-35 KT
Sat with highest winds over the far S parts. Once low moves inland
Sat night, winds should back to N-NW and drop off some. Trough
moving in Sunday may pick winds up a little bit but most areas
should be below SCA levels. Over the N gulf, winds will pick up to
15-25 KT late tonight as weak front moves in, then diminish Sat as
front dissipates.

Otherwise, keeping in patchy fog for parts of the area late
tonight with breaks in clouds and diminishing winds. Sat should
see temps rebound to slightly above average with offshore flow
helping with warming especially over the N. Sunday should be cooler
again with more onshore flow bringing clouds and spotty precip.

.LONG TERM /Sunday night through Friday/...
As of 10pm Thursday...Early next week a weak ridging pattern will
be in place over the panhandle that persists until an upper level
low pressure over the western Aleutians begins to track eastward.
Models are in fair agreement of this pattern.

Sunday looks like a relatively drier day as the remnants of a
low pressure system begin to dissipate. After this break, models
are trending toward a wetter pattern, for the panhandle as a
whole. Early next week the offshore flow pattern shifts back to
onshore flow. This should keep temperatures slightly cooler. The
largest concern next week is a stronger low that will travel
across the gulf, carrying further precipitation. Models still do
not have a good handle the intensity (though they are trending
toward a stronger low) and the track it will take.

No significant changes were made in the long term due to models
still not having a good handle on the low pressure system next
week. Used a combination of the ECMWF/GFS with input from WPC in
the long term, the Canadian model seemed like an outlier with the
handling of the low pressure.

&&

AVIATION...Widespread showers with MVFR and some IFR ceiling from
this morning has given way to VFR and MVFR ceilings and drier
conditions this afternoon and evening. Aviation weather is
expected to continue to improve overnight with offshore flow
increasing. Included some fog for various areas as low level
moisture is high and light winds prevail. Tomorrow, northern
airports expected to remain VFR. Southern airports will see
increasing possibility of rain with clouds lowering to MVFR by mid
day as low moves toward Haida Gwaii. Did include some minor wind
shear for PAKT and PAKW tomorrow due to some speed and directional
shear at low levels.

&&

.AJK Watches/Warnings/Advisories...
PUBLIC...None.
MARINE...Gale Warning for PKZ041.
     Small Craft Advisory for PKZ012-036-042-052.

&&

RWT/Byrd

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