Storm Warning 170, NWS Anchorage, AK

659 
FZAK62 PAFC 171247
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
347 AM AKST THU DEC 17 2015

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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

PKZ499-180300-
347 AM AKST THU DEC 17 2015
.SYNOPSIS FOR CENTRAL BERING SEA...
A 967 MB LOW NEAR 55N 149W EXITS THE AREA TO THE EAST BY MIDDAY. A
973 MB LOW NEAR 54N 164E MOVES TO 58N 174E AT 943 MB FRI MORNING...THEN
MOVES TO 58N 174W AT 958 MB SAT MORNING. AN ASSOCIATED FRONT OVER
THE WESTERN ALEUTIANS MOVES TO THE SOUTHWESTERN MAINLAND FRI
MORNING.

$$

PKZ411-180300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
347 AM AKST THU DEC 17 2015

...STORM WARNING THROUGH FRIDAY...

.TODAY...S WIND 40 TO 55 KT. SEAS 12 TO 20 FT. RAIN AND SNOW.
.TONIGHT...SW WIND 35 TO 50 KT. SEAS 17 TO 25 FT. RAIN.
.FRI...W WIND 40 TO 55 KT. SEAS 19 TO 34 FT. RAIN SHOWERS AND SNOW
SHOWERS.
.FRI NIGHT...W WIND 40 TO 55 KT. SEAS 19 TO 34 FT.
.SAT...SW WIND 30 TO 45 KT. SEAS 13 TO 28 FT.
.SUN...SW WIND 15 TO 30 KT. SEAS 8 TO 13 FT.
.MON...NE WIND 10 TO 25 KT. SEAS 8 TO 11 FT.

$$

PKZ412-180300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
347 AM AKST THU DEC 17 2015

...STORM WARNING THROUGH TONIGHT...

.TODAY...SE WIND 30 TO 45 KT INCREASING TO 40 TO 55 KT IN THE
AFTERNOON. SEAS 7 TO 10 FT BUILDING TO 10 TO 18 FT IN THE
AFTERNOON. SNOW AND RAIN. 
.TONIGHT...SE WIND 40 TO 55 KT BECOMING S 25 TO 40 KT AFTER
MIDNIGHT. SEAS 14 TO 21 FT. RAIN AND SNOW.
.FRI...S WIND 25 TO 40 KT. SEAS 18 TO 28 FT.
.FRI NIGHT...W WIND 30 TO 45 KT. SEAS 20 TO 35 FT.
.SAT...NW WIND 30 TO 45 KT. SEAS 14 TO 29 FT.
.SUN THROUGH MON...NE WIND 10 TO 25 KT. SEAS 9 TO 14 FT.

$$

PKZ413-180300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
347 AM AKST THU DEC 17 2015

...STORM WARNING TONIGHT AND FRIDAY...

.TODAY...S WIND 30 TO 45 KT. SEAS 10 TO 18 FT. RAIN AND SNOW.
.TONIGHT...SW WIND 35 TO 50 KT. SEAS 15 TO 28 FT. RAIN.
.FRI...SW WIND 40 TO 55 KT. SEAS 24 TO 36 FT. RAIN SHOWERS AND
SNOW SHOWERS.
.FRI NIGHT...W WIND 45 TO 55 KT. SEAS 33 TO 40 FT.
.SAT...W WIND 40 TO 55 KT. SEAS 19 TO 34 FT.
.SUN...SE WIND 15 TO 30 KT. SEAS 8 TO 13 FT.
.MON...N WIND 15 TO 30 KT. SEAS 7 TO 10 FT.

$$

PKZ414-180300-
BERING SEA OFFSHORE EAST OF 171W-
347 AM AKST THU DEC 17 2015

...STORM WARNING TONIGHT...

.TODAY...NW WIND 10 TO 25 KT BECOMING S 20 TO 35 KT IN THE
AFTERNOON. SEAS 7 TO 11 FT. FREEZING SPRAY IN THE MORNING.
.TONIGHT...S WIND 35 TO 50 KT. SEAS 9 TO 17 FT. RAIN AND SNOW.
.FRI...SW WIND 30 TO 45 KT. SEAS 13 TO 28 FT. RAIN SHOWERS.
.FRI NIGHT...SW WIND 35 TO 50 KT. SEAS 18 TO 33 FT.
.SAT...W WIND 35 TO 50 KT. SEAS 20 TO 35 FT.
.SUN...NW WIND 10 TO 25 KT. SEAS 9 TO 17 FT.
.MON...N WIND 15 TO 30 KT. SEAS 5 TO 10 FT.

$$

038 
FZAK62 PAFC 180003
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
303 PM AKST THU DEC 17 2015

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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

PKZ499-181530-
303 PM AKST THU DEC 17 2015
.SYNOPSIS FOR CENTRAL BERING SEA...

A 951 MB LOW AT 57N 172E MOVES TO 59N 169W BY SAT AFTERNOON AS A
963 MB LOW. THE ASSOCIATED FRONT MOVES ACROSS THE ALEUTIANS INTO
SOUTHWEST ALASKA BY SAT MORNING. A 979 MB LOW ENTERS FROM THE
NORTH PACIFIC NEAR 53N 167E SAT MORNING AND MOVES TO 55N 169E AS A
977 MB LOW SAT AFTERNOON. A FRONT TRAILS OVER THE WESTERN
ALEUTIANS THROUGH SAT AFTERNOON.

$$

PKZ411-181530-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
303 PM AKST THU DEC 17 2015

...STORM WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...S TO W WIND 35 TO 50 KT. SEAS 18 TO 26 FT. RAIN.
.FRI...W WIND 40 TO 55 KT...EXCEPT VARIABLE 20 KT N OF 57N. SEAS
20 TO 35 FT. RAIN AND SNOW SHOWERS.
.FRI NIGHT...W WIND 40 TO 55 KT...EXCEPT N 20 KT N OF 57. SEAS 20
TO 35 FT. SNOW AND RAIN SHOWERS.
.SAT...W WIND 35 TO 50 KT. SEAS 15 TO 30 FT.
.SAT NIGHT...S WIND 15 TO 30 KT. SEAS 10 TO 17 FT.
.SUN...NW WIND 15 TO 30 KT. SEAS 9 TO 14 FT.
.MON...N WIND 10 TO 25 KT. SEAS 10 TO 15 FT.
.TUE...S WIND 10 TO 20 KT. SEAS 11 TO 14 FT.

$$

PKZ412-181530-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
303 PM AKST THU DEC 17 2015

...STORM WARNING TONIGHT...

.TONIGHT...SE WIND 35 TO 50 KT BECOMING S 20 TO 35 KT AFTER
MIDNIGHT. SEAS 13 TO 20 FT. RAIN.
.FRI...S WIND 25 TO 40 KT. SEAS 18 TO 30 FT. RAIN AND SNOW
SHOWERS.
.FRI NIGHT...S TO W WIND 30 TO 45 KT. SEAS 21 TO 36 FT. RAIN
AND SNOW SHOWERS.
.SAT...NW WIND 30 TO 45 KT. SEAS 19 TO 34 FT.
.SAT NIGHT...W WIND 25 TO 40 KT. SEAS 15 TO 23 FT.
.SUN THROUGH TUE...NE WIND 10 TO 25 KT. SEAS 9 TO 16 FT.

$$

PKZ413-181530-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
303 PM AKST THU DEC 17 2015

...STORM WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...SW WIND 35 TO 45 KT. SEAS 16 TO 25 FT. RAIN.
.FRI...SW WIND 40 TO 55 KT. SEAS 23 TO 37 FT. RAIN AND SNOW
SHOWERS.
.FRI NIGHT...W WIND 45 TO 55 KT. SEAS 32 TO 40 FT. SNOW AND RAIN
SHOWERS.
.SAT...W WIND 40 TO 55 KT. SEAS 24 TO 39 FT.
.SAT NIGHT...SW WIND 25 TO 40 KT. SEAS 15 TO 30 FT.
.SUN...SE WIND 15 TO 30 KT. SEAS 9 TO 14 FT.
.MON...NW WIND 10 TO 25 KT. SEAS 13 TO 16 FT.
.TUE...W WIND 10 TO 20 KT. SEAS 12 TO 16 FT.

$$

PKZ414-181530-
BERING SEA OFFSHORE EAST OF 171W-
303 PM AKST THU DEC 17 2015

...STORM WARNING TONIGHT AND FRIDAY NIGHT...

.TONIGHT...SE WIND 35 TO 50 KT. SEAS 8 TO 13 FT BUILDING TO 13 TO
19 FT AFTER MIDNIGHT. RAIN AND SNOW.
.FRI...SW WIND 25 TO 40 KT. SEAS 15 TO 23 FT. RAIN SHOWERS.
.FRI NIGHT...SW WIND 35 TO 50 KT. SEAS 17 TO 32 FT. RAIN AND
SNOW SHOWERS.
.SAT...W WIND 35 TO 50 KT. SEAS 22 TO 37 FT.
.SAT NIGHT...W WIND 30 TO 45 KT. SEAS 18 TO 33 FT.
.SUN THROUGH TUE...NW WIND 15 TO 30 KT. SEAS 10 TO 18 FT.

$$

499 
FZAK62 PAFC 181240
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
340 AM AKST FRI DEC 18 2015

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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

PKZ499-190230-
340 AM AKST FRI DEC 18 2015
.SYNOPSIS FOR CENTRAL BERING SEA...
A 944 MB LOW AT 57N 175E MOVES TO 59N 173W SAT MORNING AT 955 MB...
THEN MOVES INLAND NEAR 60N 164W SUN MORNING AT 973 MB. AN ASSOCIATED
FRONT OVER THE EASTERN ALEUTIANS MOVES INTO SOUTHWEST ALASKA BY
FRI AFTERNOON. A NEW FRONT MOVES OVER THE WESTERN ALEUTIANS BY
SAT MORNING AND REMAINS STATIONARY THROUGH SUN.

$$

PKZ411-190230-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
340 AM AKST FRI DEC 18 2015

...STORM WARNING THROUGH TONIGHT...

.TODAY...W WIND 45 TO 60 KT EXCEPT N 20 TO 30 KT N OF 56N. SEAS
20 TO 35 FT. RAIN AND SNOW SHOWERS.
.TONIGHT...W WIND 40 TO 55 KT EXCEPT N 20 TO 30 KT N OF 56N. SEAS
19 TO 34 FT. SNOW AND RAIN SHOWERS.
.SAT...W WIND 30 TO 45 KT BECOMING S 15 TO 30 KT IN THE
AFTERNOON. SEAS 14 TO 28 FT.
.SAT NIGHT...S WIND 15 TO 30 KT. SEAS 11 TO 16 FT.
.SUN THROUGH MON...W WIND 10 TO 25 KT. SEAS 9 TO 14 FT.
.TUE...S WIND 10 TO 20 KT. SEAS 11 TO 14 FT.

$$

PKZ412-190230-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
340 AM AKST FRI DEC 18 2015

...STORM WARNING THROUGH SATURDAY...

.TODAY...S WIND 25 TO 40 KT BECOMING SW 40 TO 55 KT IN THE
AFTERNOON. SEAS 18 TO 25 FT BUILDING TO 20 TO 35 FT IN THE
AFTERNOON. RAIN SHOWERS.
.TONIGHT...W WIND 35 TO 50 KT. SEAS 22 TO 37 FT. RAIN AND SNOW
SHOWERS.
.SAT...W WIND 35 TO 50 KT. SEAS 19 TO 34 FT. SNOW AND RAIN
SHOWERS.
.SAT NIGHT...W WIND 30 TO 45 KT. SEAS 15 TO 23 FT.
.SUN...SE WIND 15 TO 30 KT. SEAS 9 TO 14 FT.
.MON THROUGH TUE...NE WIND 10 TO 25 KT. SEAS 9 TO 14 FT.

$$

PKZ413-190230-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
340 AM AKST FRI DEC 18 2015

...STORM WARNING THROUGH SATURDAY...

.TODAY...SW WIND 45 TO 60 KT. SEAS 25 TO 40 FT. RAIN AND SNOW
SHOWERS.
.TONIGHT...W WIND 55 KT. SEAS 34 TO 41 FT. SNOW AND RAIN SHOWERS.
.SAT...W WIND 35 TO 50 KT. SEAS 23 TO 38 FT.
.SAT NIGHT...SW WIND 25 TO 40 KT. SEAS 14 TO 29 FT.
.SUN...SE WIND 25 TO 40 KT. SEAS 10 TO 15 FT.
.MON...NW WIND 15 TO 30 KT. SEAS 12 TO 18 FT.
.TUE...W WIND 10 TO 20 KT. SEAS 12 TO 16 FT.

$$

PKZ414-190230-
BERING SEA OFFSHORE EAST OF 171W-
340 AM AKST FRI DEC 18 2015

...STORM WARNING TONIGHT AND SATURDAY...

.TODAY...SW WIND 25 TO 35 KT INCREASING TO 30 TO 45 KT IN THE
AFTERNOON. SEAS 14 TO 28 FT. RAIN SHOWERS.
.TONIGHT...SW WIND 35 TO 50 KT. SEAS 20 TO 35 FT. RAIN AND SNOW
SHOWERS.
.SAT...SW WIND 35 TO 50 KT. SEAS 24 TO 39 FT. RAIN AND SNOW
SHOWERS.
.SAT NIGHT...W WIND 30 TO 45 KT. SEAS 21 TO 32 FT.
.SUN...NW WIND 25 TO 40 KT. SEAS 10 TO 18 FT.
.MON...NE WIND 20 TO 30 KT. SEAS 8 TO 13 FT.
.TUE...NW WIND 15 TO 25 KT. SEAS 9 TO 17 FT.

$$

260 
FZAK62 PAFC 190001
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
301 PM AKST FRI DEC 18 2015

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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

PKZ499-191445-
301 PM AKST FRI DEC 18 2015
.SYNOPSIS FOR CENTRAL BERING SEA...

A 946 MB LOW AT 58N 178W MOVES TO 60N 165W AS A 966 MB LOW SAT NIGHT
AND THEN MOVES ONSHORE SUN MORNING. A 987 MB LOW NEAR 50N 164E
SAT MORNING MOVES TO 55N 171E SAT EVENING AS A 972 MB LOW BEFORE
MOVING TOWARDS KAMCHATKA SUN MORNING. A NORTH PACIFIC LOW MOVES
TO 49N 178W SUN AFTERNOON AS A 964 MB LOW.

$$

PKZ411-191445-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
301 PM AKST FRI DEC 18 2015

...STORM WARNING TONIGHT...

.TONIGHT...W WIND 40 TO 55 KT EXCEPT N 20 TO 30 KT N OF 57N. SEAS
18 TO 33 FT. SNOW AND RAIN SHOWERS.
.SAT...W WIND 30 TO 45 KT BECOMING S 20 TO 35 KT IN THE
AFTERNOON. SEAS 16 TO 24 FT.
.SAT NIGHT...S WIND 20 TO 35 KT. SEAS 12 TO 20 FT. SNOW AND RAIN.
.SUN...SW WIND 15 TO 30 KT. SEAS 11 TO 18 FT.
.SUN NIGHT...W WIND 10 TO 20 KT. SEAS 9 TO 13 FT.
.MON...NW WIND 10 TO 20 KT. SEAS 8 TO 12 FT.
.TUE...S WIND 10 TO 20 KT. SEAS 6 TO 10 FT.
.WED...NE WIND 10 TO 25 KT. SEAS 6 TO 9 FT.

$$

PKZ412-191445-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
301 PM AKST FRI DEC 18 2015

...STORM WARNING THROUGH SATURDAY...

.TONIGHT...W WIND 35 TO 50 KT. SEAS 23 TO 38 FT. RAIN AND SNOW
SHOWERS.
.SAT...W WIND 35 TO 50 KT. SEAS 19 TO 34 FT. SNOW AND RAIN
SHOWERS.
.SAT NIGHT...W WIND 30 TO 45 KT DIMINISHING TO 20 TO 35 KT AFTER
MIDNIGHT. SEAS 16 TO 24 FT.
.SUN...S WIND 10 TO 25 KT. SEAS 9 TO 14 FT.
.SUN NIGHT...E WIND 15 TO 30 KT. SEAS 9 TO 13 FT.
.MON THROUGH TUE...NE WIND 15 TO 30 KT. SEAS 7 TO 12 FT.
.WED...E WIND 10 TO 25 KT. SEAS 7 FT.

$$

PKZ413-191445-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
301 PM AKST FRI DEC 18 2015

...STORM WARNING THROUGH SATURDAY...

.TONIGHT...W WIND 50 TO 60 KT. SEAS 32 TO 42 FT. SNOW AND RAIN
SHOWERS.
.SAT...W WIND 40 TO 55 KT. SEAS 22 TO 37 FT.
.SAT NIGHT...W WIND 25 TO 40 KT BECOMING S 15 TO 30 KT AFTER
MIDNIGHT. SEAS 15 TO 23 FT.
.SUN...S WIND 15 TO 30 KT. SEAS 9 TO 13 FT.
.SUN NIGHT...E WIND 25 TO 40 KT. SEAS 10 TO 17 FT.
.MON...N WIND 15 TO 30 KT. SEAS 9 TO 17 FT.
.TUE...W WIND UP TO 20 KT. SEAS 9 FT.
.WED...SE WIND 15 TO 25 KT. SEAS 6 TO 11 FT.

$$

PKZ414-191445-
BERING SEA OFFSHORE EAST OF 171W-
301 PM AKST FRI DEC 18 2015

...STORM WARNING THROUGH SATURDAY...

.TONIGHT...SW WIND 40 TO 55 KT. SEAS 21 TO 36 FT. RAIN AND SNOW
SHOWERS.
.SAT...W WIND 35 TO 50 KT. SEAS 25 TO 40 FT. RAIN AND SNOW
SHOWERS.
.SAT NIGHT...W WIND 35 TO 45 KT DIMINISHING TO 25 TO 40 KT AFTER
MIDNIGHT. SEAS 19 TO 31 FT. RAIN SHOWERS.
.SUN...W WIND 20 TO 35 KT. SEAS 12 TO 20 FT.
.SUN NIGHT...NE WIND 25 TO 40 KT. SEAS 7 TO 11 FT.
.MON...NE WIND 15 TO 30 KT. SEAS 7 TO 12 FT.
.TUE...NW WIND 15 TO 25 KT. SEAS 8 FT.
.WED...SE WIND 10 TO 25 KT. SEAS 5 TO 8 FT.

$$

691 
FZAK62 PAFC 191241
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
341 AM AKST SAT DEC 19 2015

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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

PKZ499-200245-
341 AM AKST SAT DEC 19 2015
.SYNOPSIS FOR CENTRAL BERING SEA...
A 955 MB LOW NEAR 59N 172W MOVES INLAND NEAR 60N 165W SUN MORNING
AT 975 MB. A FRONT ENTERS THE WESTERN ALEUTIANS ASSOCIATED WITH A
NORTH PACIFIC LOW AND STALLS ON SUNDAY. A NEW LOW DEVELOPS ALONG
THIS FRONT NEAR 44N 174E SUN MORNING AT 982 MB AND MOVES TO 54N
178W MON MORNING AT 971 MB.

$$

PKZ411-200245-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
341 AM AKST SAT DEC 19 2015

...GALE WARNING THROUGH TONIGHT...

.TODAY...W WIND 30 TO 45 KT DIMINISHING TO 15 TO 30 KT IN THE
AFTERNOON. S OF 56N...BECOMING S 20 TO 35 KT IN THE AFTERNOON.
SEAS 16 TO 24 FT.
.TONIGHT...S WIND 20 TO 35 KT. SEAS 11 TO 18 FT. SNOW AND RAIN.
.SUN...W WIND 15 TO 30 KT. SEAS 9 TO 16 FT. SNOW AND RAIN.
.SUN NIGHT...N WIND 25 TO 40 KT. SEAS 9 TO 16 FT.
.MON...NE WIND 25 TO 40 KT. SEAS 10 TO 17 FT.
.TUE...S WIND 10 TO 20 KT. SEAS 6 TO 10 FT.
.WED...NE WIND 10 TO 25 KT. SEAS 6 TO 9 FT.

$$

PKZ412-200245-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
341 AM AKST SAT DEC 19 2015

...STORM WARNING TODAY...

.TODAY...W WIND 35 TO 50 KT. SEAS 20 TO 35 FT. SNOW SHOWERS AND
RAIN SHOWERS.
.TONIGHT...W WIND 30 TO 45 KT. WIND BECOMING SW 20 TO 35 KT AFTER
MIDNIGHT W OF 176W. SEAS 16 TO 24 FT.
.SUN...SE WIND 10 TO 25 KT. SEAS 9 TO 14 FT.
.SUN NIGHT...E WIND 20 TO 35 KT. SEAS 9 TO 14 FT.
.MON THROUGH TUE...NE WIND 15 TO 30 KT. SEAS 8 TO 13 FT.
.WED...E WIND 10 TO 25 KT. SEAS 7 FT.

$$

PKZ413-200245-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
341 AM AKST SAT DEC 19 2015

...STORM WARNING TODAY...

.TODAY...W WIND 35 TO 50 KT. SEAS 27 TO 37 FT SUBSIDING TO 19 TO
32 FT IN THE AFTERNOON.
.TONIGHT...SW WIND 25 TO 40 KT DIMINISHING TO 15 TO 30 KT AFTER
MIDNIGHT. SEAS 15 TO 23 FT.
.SUN...SE WIND 20 TO 35 KT. SEAS 9 TO 13 FT.
.SUN NIGHT...E WIND 25 TO 40 KT. SEAS 11 TO 18 FT.
.MON...N WIND 30 TO 45 KT. SEAS 12 TO 20 FT.
.TUE...W WIND UP TO 20 KT. SEAS 9 FT.
.WED...SE WIND 15 TO 25 KT. SEAS 6 TO 11 FT.

$$

PKZ414-200245-
BERING SEA OFFSHORE EAST OF 171W-
341 AM AKST SAT DEC 19 2015

...STORM WARNING TODAY...

.TODAY...W WIND 35 TO 50 KT. SEAS 24 TO 38 FT. RAIN AND SNOW
SHOWERS.
.TONIGHT...W WIND 35 TO 45 KT DIMINISHING TO 25 TO 40 KT AFTER
MIDNIGHT. SEAS 19 TO 30 FT. SNOW SHOWERS AND RAIN SHOWERS.
.SUN...W WIND 25 TO 40 KT DIMINISHING TO 15 TO 30 KT IN THE
AFTERNOON. S OF THE PRIBILOF ISLANDS...WIND BECOMING SE 15 TO 25
KT IN THE AFTERNOON. SEAS 12 TO 20 FT.
.SUN NIGHT...NE WIND 20 TO 35 KT. SEAS 6 TO 11 FT.
.MON...NE WIND 15 TO 30 KT. SEAS 9 TO 14 FT.
.TUE...NW WIND 15 TO 25 KT. SEAS 8 FT.
.WED...SE WIND 10 TO 25 KT. SEAS 5 TO 8 FT.

$$

202 
FZAK62 PAFC 192341
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
241 PM AKST SAT DEC 19 2015

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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

PKZ499-201515-
241 PM AKST SAT DEC 19 2015
.SYNOPSIS FOR CENTRAL BERING SEA...
A 967 MB LOW AT 60N 168W WILL MOVE ONSHORE NEAR 60N 165W SUN
MORNING AT 977 MB. A 977 MB LOW NEAR 55N 170E WILL MOVE TO 
59N 167E SUN NIGHT AT 983 MB AND THEN DISSIPATE MON MORNING. 
A 990 MB LOW NEAR 47N 174E WILL MOVE TO 52N 180 AND RAPIDLY
STRENGTHEN TO 968 MB SUN AFTERNOON. THIS LOW WILL THEN MOVE 
TO 57N 173W AT 968 MB MON AFTERNOON.

$$

PKZ411-201515-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
241 PM AKST SAT DEC 19 2015

...GALE WARNING TONIGHT AND SUNDAY NIGHT...

.TONIGHT...S TO W WIND 20 TO 35 KT. SEAS 12 TO 17 FT. SNOW AND RAIN.
.SUN...N TO W WIND 15 TO 30 KT. SEAS 9 TO 15 FT. SNOW AND RAIN.
.SUN NIGHT...NW WIND 25 TO 45 KT...BECOMING E 45 KT N OF 55N
AFTER MIDNIGHT. SEAS 12 TO 29 FT. SNOW. FREEZING SPRAY.
.MON...NW WIND 25 TO 40 KT...EXCEPT NE 45 KT N OF 55N. 
SEAS 12 TO 20 FT.
.MON NIGHT...N WIND 25 TO 40 KT. SEAS 15 TO 21 FT.
.TUE THROUGH WED...E WIND 20 TO 35 KT. SEAS 11 TO 19 FT.
.THU...N WIND 20 TO 35 KT. SEAS 18 TO 22 FT.

$$

PKZ412-201515-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
241 PM AKST SAT DEC 19 2015

...GALE WARNING TONIGHT AND SUNDAY NIGHT...

.TONIGHT...W WIND 30 TO 45 KT BECOMING SW 20 TO 35 KT 
AFTER MIDNIGHT. SEAS 15 TO 23 FT.
.SUN...SE WIND 15 TO 30 KT. SEAS 9 TO 15 FT.
.SUN NIGHT...E WIND 25 TO 40 KT. SEAS 9 TO 16 FT. RAIN. 
.MON...NE WIND 30 TO 45 KT. SEAS 12 TO 17 FT.
.MON NIGHT...NE WIND 30 TO 45 KT. SEAS 13 TO 18 FT.
.TUE...NE WIND 25 TO 40 KT. SEAS 11 TO 19 FT.
.WED THROUGH THU...E WIND 25 TO 40 KT. SEAS 14 TO 22 FT.

$$

PKZ413-201515-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
241 PM AKST SAT DEC 19 2015

...STORM WARNING SUNDAY NIGHT...

.TONIGHT...SW WIND 20 TO 35 KT. SEAS 14 TO 22 FT.
.SUN...S WIND 15 TO 30 KT BECOMING SE 25 TO 40 KT IN THE 
AFTERNOON. SEAS 10 TO 15 FT. RAIN AND SNOW.
.SUN NIGHT...SE WIND 30 TO 45 KT BECOMING SW 40 TO 55 KT 
AFTER MIDNIGHT. SEAS 14 TO 22 FT. RAIN AND SNOW.
.MON...W WIND 40 TO 55 KT. SEAS 15 TO 26 FT.
.MON NIGHT...W WIND 35 TO 50 KT. SEAS 16 TO 20 FT.
.TUE...NW WIND 35 TO 50 KT. SEAS 11 TO 17 FT.
.WED...SE WIND 20 TO 35 KT. SEAS 12 TO 20 FT.
.THU...NE WIND 20 TO 35 KT. SEAS 14 TO 22 FT.

$$

PKZ414-201515-
BERING SEA OFFSHORE EAST OF 171W-
241 PM AKST SAT DEC 19 2015

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...W WIND 30 TO 45 KT. SEAS 20 TO 30 FT. 
SNOW AND RAIN SHOWERS.
.SUN...W WIND 25 TO 40 KT DIMINISHING TO 15 TO 30 KT 
IN THE AFTERNOON. SEAS 11 TO 19 FT.
.SUN NIGHT...VARIABLE WIND 20 KT BECOMING SW TO SE 
WIND 20 TO 35 KT. SEAS 7 TO 14 FT.
.MON...S WIND 30 TO 45 KT. SEAS 10 TO 18 FT.
.MON NIGHT...SW WIND 25 TO 40 KT. SEAS 10 TO 18 FT.
.TUE...W WIND 25 TO 40 KT. SEAS 8 TO 16 FT.
.WED...E WIND 20 TO 35 KT. SEAS 8 TO 13 FT.
.THU...E WIND 25 TO 40 KT. SEAS 13 TO 20 FT.

$$

689 
FZAK62 PAFC 201240
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
340 AM AKST SUN DEC 20 2015

OFFSHORE WATERS FORECAST FOR THE BERING SEA

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

PKZ499-210300-
340 AM AKST SUN DEC 20 2015
.SYNOPSIS FOR CENTRAL BERING SEA...
A 982 MB LOW NEAR 51N 177E MOVES TO 57N 180 AT 975 MB MON
MORNING...THEN MOVES TO 55N 173E AT 980 MB TUE MORNING. A 976 MB
LOW DEVELOPS NEAR 54N 163W MON MORNING AND MOVES TO 55N 149W TUE
MORNING AND MAINTAINS STRENGTH.

$$

PKZ411-210300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
340 AM AKST SUN DEC 20 2015

...GALE WARNING THROUGH MONDAY...

.TODAY...NW WIND 20 TO 35 KT...EXCEPT E 25 KT N OF 56N. SEAS 10
TO 14 FT. SNOW AND RAIN. .
.TONIGHT...W WIND 20 TO 35 KT...EXCEPT E 25 KT N OF 56N. SEAS 9
TO 14 FT. SNOW AND RAIN.
.MON...W WIND 20 TO 35 KT...EXCEPT E 25 KT N OF 57N. SEAS 9 TO 15
FT. SNOW.
.MON NIGHT...SW WIND 15 TO 30 KT. SEAS 10 TO 15 FT.
.TUE...SE WIND 15 TO 30 KT. SEAS 9 TO 14 FT.
.WED...E WIND 20 TO 35 KT. SEAS 11 TO 19 FT.
.THU...N WIND 20 TO 35 KT. SEAS 18 TO 22 FT.

$$

PKZ412-210300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
340 AM AKST SUN DEC 20 2015

...GALE WARNING TONIGHT AND MONDAY...

.TODAY...S WIND 15 TO 30 KT. SEAS 9 TO 13 FT.
.TONIGHT...E WIND 20 TO 35 KT. SEAS 9 TO 14 FT. SNOW AND RAIN.
.MON...SE TO SW WIND 20 TO 35 KT. SEAS 11 TO 18 FT. SNOW AND
RAIN.
.MON NIGHT...SW WIND 15 TO 25 KT. SEAS 10 TO 15 FT.
.TUE...SW WIND UP TO 20 KT. SEAS 7 TO 10 FT.
.WED THROUGH THU...E WIND 25 TO 40 KT. SEAS 14 TO 22 FT.

$$

PKZ413-210300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
340 AM AKST SUN DEC 20 2015

...GALE WARNING THROUGH MONDAY...

.TODAY...S WIND 15 TO 30 KT BECOMING SE 25 TO 35 KT IN THE
AFTERNOON. SEAS 10 TO 14 FT. RAIN AND SNOW.
.TONIGHT...SE WIND 25 TO 40 KT BECOMING W AFTER MIDNIGHT. SEAS 11
TO 19 FT. SNOW AND RAIN.
.MON...W WIND 25 TO 40 KT. SEAS 13 TO 21 FT. SNOW.
.MON NIGHT...SW WIND 20 TO 30 KT. SEAS 11 TO 16 FT.
.TUE...SW WIND 10 TO 20 KT. SEAS 8 TO 12 FT.
.WED...SE WIND 20 TO 35 KT. SEAS 12 TO 20 FT.
.THU...NE WIND 20 TO 35 KT. SEAS 14 TO 22 FT.

$$

PKZ414-210300-
BERING SEA OFFSHORE EAST OF 171W-
340 AM AKST SUN DEC 20 2015

...GALE WARNING TODAY AND MONDAY...

.TODAY...W WIND 25 TO 40 KT DIMINISHING TO 15 TO 30 KT IN THE
AFTERNOON. WIND BECOMING SE 15 TO 25 KT S OF THE PRIBILOF ISLANDS
IN THE AFTERNOON. SEAS 11 TO 19 FT.
.TONIGHT...SE WIND 15 TO 30 KT. SEAS 6 TO 11 FT.
.MON...E WIND 20 TO 35 KT EXCEPT W 15 TO 25 KT S OF THE PRIBILOF
ISLANDS. SEAS 9 TO 17 FT. SNOW AND RAIN.
.MON NIGHT...W WIND 15 TO 30 KT. SEAS 11 TO 19 FT.
.TUE...W WIND 10 TO 25 KT. SEAS 6 TO 10 FT.
.WED...E WIND 20 TO 35 KT. SEAS 8 TO 13 FT.
.THU...E WIND 25 TO 40 KT. SEAS 13 TO 20 FT.

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
537 AM AKST WED DEC 16 2015

.ANALYSIS AND UPPER LEVELS...

AN UPPER LEVEL TROUGH IS OVER THE BERING THIS MORNING WITH RIDGES
OVER SOUTHEAST AK AND THE EASTERN GULF OF AK...AS WELL AS NEAR
KAMCHATKA. AT THE SURFACE...LOWS ARE OVER THE SOUTHERN TIP OF THE
KAMCHATKA PENINSULA...OVER THE BERING STRAIT...AND SOUTH OF THE
AKPEN. A DECAYING FRONT WITH SOME SNOW SHOWER ACTIVITY IS ALONG
THE GULF COAST AND IS IN THE PROCESS OF MERGING WITH A FRONT FROM
THE AKPEN LOW. COLD AIR IS STREAMING ACROSS THE BERING SEA WITH
ASSOCIATED SNOW SHOWERS...AND SOME OVERNIGHT VALLEY FOG IS
AFFECTING SOUTHWEST AK AND THE COPPER RIVER AS WELL AS CORDOVA.

&&

.MODEL DISCUSSION...

MODELS ARE IN EXCELLENT AGREEMENT INDICATING A HIGHLY PROGRESSIVE PATTERN
CHANGE IS IN PROGRESS.

ALL AGREE THAT THE SURFACE RIDGE OVER THE GULF WILL BE REPLACED BY
THE LOW SOUTH OF THE AKPEN...AND THE BERING LOW WILL BE REPLACED
BY THE RIDGE ARRIVING FROM NEAR KAMCHATKA. THE LOW CURRENTLY OVER
SOUTHERN KAMCHATKA WILL ALSO MOVE INTO THE WESTERN BERING. THIS
DYNAMIC DEVELOPMENT WILL RESULT IN A MOISTURE LADEN FRONT
ASSOCIATED WITH THE AKPEN LOW REACHING THE NORTH GULF COAST LATER
TODAY THROUGH THU...A DRYING RIDGE SPREADING OVER SW AK ON
THU...AND ANOTHER POWERFUL SURFACE LOW ENTERING THE WESTERN
BERING BEGINNING ON THU. THE FORECAST UTILIZES SOME NAM AND EC IN
THE SHORT TERM DUE TO RUN TO RUN CONSISTENCY.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (DAYS 1 AND 2)...

AFTER A RELATIVELY QUIET NIGHT ACROSS SOUTHCENTRAL...A STRONG LOW
PRESSURE SYSTEM IS DEVELOPING IN THE NORTH PACIFIC AND EXPECTED TO
ENTER THE GULF BY THIS AFTERNOON. HEAVY PRECIPITATION AND STORM
STRENGTH GUSTS ARE EXPECTED TO IMPACT KODIAK ISLAND BEGINNING THIS
EVENING AND CONTINUING INTO THE MORNING HOURS THURSDAY. ALTHOUGH
IT IS NOT EXPECTED TO MAKE LANDFALL ON MAINLAND SOUTHCENTRAL...IT
WILL STILL INFLUENCE THE MAINLAND WEATHER OVER THE NEXT 48 HOURS.
IT IS EXPECTED TO ENHANCE PRESSURE GRADIENTS ACROSS MAINLY THE
NORTH- SOUTH GAPS ACROSS THE GULF COAST...WITH GUSTY WINDS
EXPECTED OUT OF THE MATANUSKA VALLEY...ALONG THE INLET...AND A FEW
LOCAL GUSTS IN VALDEZ. IN ADDITION...PERSISTENT EASTERLY FLOW
ASSOCIATED WITH THE LOW WILL BRING STEADY RAIN AND SNOW TO THE
EAST KENAI BEGINNING THIS MORNING THROUGH THURSDAY.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (DAYS 1 AND 2)...

A FRONTAL SYSTEM ASSOCIATED WITH THE DEEPENING LOW SOUTH OF KODIAK
ISLAND WILL REMAIN STRETCHED ACROSS THE ALASKA PENINSULA TODAY AND
TONIGHT THEN WEAKEN AND PULL AWAY TO THE SOUTHWEST ON THURSDAY.
FURTHER NORTH...CONDITIONS WILL REMAIN DRY OVER MUCH OF SOUTHWEST
ALASKA THROUGH THURSDAY NIGHT. NORTHEAST WINDS WILL INCREASE
THROUGH THE DAY TODAY THEN TURN MORE NORTHERLY TONIGHT AND
THURSDAY. THESE INCREASINGLY BREEZY WINDS SHOULD PREVENT ANY FOG
FROM REFORMING TONIGHT OR THURSDAY MORNING AND CONFINE THE COLDEST
LOW TEMPERATURES TO THE MORE INTERIOR AND WIND SHELTERED VALLEYS.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (DAYS 1 AND 2)...

THE NEXT INCOMING FRONTAL SYSTEM WILL REACH THE WESTERN ALEUTIANS
THIS EVENING AND THEN CONTINUE EAST ACROSS THE BERING AND
ALEUTIANS TONIGHT AND THURSDAY. WHILE NOT AS STRONG AS THE
PREVIOUS BIG ONE...THE SURFACE LOW IS STILL EXPECTED TO DEEPEN
RESPECTABLY INTO THE LOWER 940 MB RANGE. A SWATH OF SOUTHEASTERLY
STORM FORCE WINDS ASSOCIATED WITH THE INITIAL FRONTAL SYSTEM WILL
LIFT NORTHEAST ACROSS THE BERING THURSDAY AND THURSDAY NIGHT. A
BROADER AREA OF SOLID SOUTHWESTERLY STORM FORCE WINDS TO THE
SOUTH OF THE SURFACE LOW WILL PUSH INTO THE WESTERN AND CENTRAL
ALEUTIANS THURSDAY AFTERNOON AND EVENING. WINDS WILL TURN MORE
WESTERLY THURSDAY NIGHT AND FRIDAY WITH COLD ADVECTION HELPING TO
MIX DOWN STRONGER GUSTS. ANOTHER SIGNIFICANT CONCERN WITH THIS LOW
WILL BE COMBINED SEAS BUILDING TO NEAR 40 FT.

&&

.LONG TERM FORECAST (DAYS 3 THROUGH 7)...
THERE IS DECENT AGREEMENT WITH THE MODELS MOVING A STRONG STORM-
FORCE LOW INTO THE WESTERN BERING THURSDAY. THE PRIMARY IMPACT
FROM THIS STORM WILL BE WIDESPREAD STRONG WINDS ACROSS THE
SOUTHERN HALF OF THE BERING SEA AND THE ALEUTIAN CHAIN...ENDING
FROM WEST TO EAST FROM SATURDAY THROUGH SUNDAY.

FOR SOUTHCENTRAL...THE UPPER TROUGH WITH THE ELEVATED FRONTAL
BOUNDARY WILL BRING AN OPPORTUNITY FOR SNOW FOR SOUTHCENTRAL
THURSDAY NIGHT INTO FRIDAY...ESPECIALLY SOUTH AND EAST FACING
SLOPES. ACCUMULATIONS SHOULD BE LIGHT SINCE THIS SYSTEM WILL BE A
FAIRLY QUICK MOVER. A TRIPLE POINT LOW FORMS ALONG THIS FRONT OVER
THE NORTHWEST GULF AND MOVES QUICKLY EAST ACROSS THE NORTHERN GULF
ALLOWING FOR COLD AIR ADVECTION INTO SOUTHCENTRAL ALASKA TO
COMMENCE FROM THE NORTH AND WEST FOR SATURDAY INTO SUNDAY. BY LATE
SUNDAY INTO MONDAY...AN APPROACHING SYSTEM FROM THE WEST MAY PUSH
MOISTURE UP THE INLET AND ALLOW FOR THE FIRST SIGNIFICANT SNOW
EVENT (MORE THAN THE DUSTING TO 2 INCH TYPE EVENTS EXPERIENCED IN
ANCHORAGE) IN A FEW WEEKS. CONFIDENCE IS STILL LOW AT THIS TIME
BUT INCREASING SLIGHTLY WITH EACH SUCCESSIVE SET OF MODEL RUNS.

LOOKING AHEAD EVEN FURTHER...THERE IS INCREASING CONFIDENCE THAT
A SIGNIFICANT COLD AND DRY PERIOD WILL SETTLE OVER SOUTHCENTRAL
AND SOUTHWEST ALASKA TOWARD THE MIDDLE OF CHRISTMAS WEEK AND
PERSIST THROUGH AT LEAST CHRISTMAS WEEKEND.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...HIGH WIND WATCH 187 191.
MARINE...GALE 121 132 136 137 139 141 155 165 170 172-175 179 352
         413 414.
         STORM 119 120 130 131 138 150 176-178 185 351 411 412.
         HEAVY FREEZING SPRAY 180 185.

&&

SYNOPSIS AND MODEL DISCUSSION...DS
SOUTHCENTRAL ALASKA...EN
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...JR
LONG TERM...CC