Gale Warning 117, NWS Anchorage, AK

990 
FZAK62 PAFC 211253
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
353 AM AKST TUE FEB 21 2017

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.

PKZ499-220215-
353 AM AKST TUE FEB 21 2017
.SYNOPSIS FOR CENTRAL BERING SEA...
BOGOSLOF VOLCANO AT 54N 168W REMAINS ACTIVE. A FRONT OVER THE
EASTERN BERING WEAKENS AS IT MOVES INTO SOUTHWEST ALASKA THIS
AFTERNOON. A 964 MB LOW NEAR 49N 169E MIDDAY TODAY MOVES TO 53N
167E AT 947 MB EARLY WED MORNING...THEN MOVES TO 56N 170E AT 960
MB LATE WED NIGHT.

$$

PKZ411-220215-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
353 AM AKST TUE FEB 21 2017

...STORM WARNING TONIGHT...

.TODAY...SE WIND 25 TO 40 KT. SEAS 16 TO 23 FT.
.TONIGHT...SE WIND 35 TO 50 KT. SEAS 17 TO 23 FT. SNOW AND RAIN.
.WED...S WIND 30 TO 40 KT. SEAS 20 TO 25 FT.
.WED NIGHT...S WIND 30 TO 45 KT. SEAS 20 TO 29 FT.
.THU...S WIND 30 TO 45 KT. SEAS 17 TO 29 FT.
.FRI...SE WIND 25 TO 40 KT. SEAS 16 TO 30 FT.
.SAT...SW WIND 20 TO 35 KT. SEAS 15 TO 23 FT.

$$

PKZ412-220215-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
353 AM AKST TUE FEB 21 2017

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...E WIND 25 TO 40 KT. SEAS 14 TO 22 FT. FREEZING SPRAY.
.TONIGHT...E WIND 25 TO 40 KT. SEAS 12 TO 18 FT. FREEZING SPRAY IN
THE EVENING. SNOW AND RAIN.
.WED...SE WIND 25 TO 40 KT. SEAS 12 TO 20 FT. RAIN AND SNOW.
.WED NIGHT...S WIND 20 TO 35 KT. SEAS 15 TO 20 FT.
.THU THROUGH SAT...S WIND 25 TO 40 KT. SEAS 15 TO 26 FT.

$$

PKZ413-220215-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
353 AM AKST TUE FEB 21 2017

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...S WIND 15 TO 30 KT. SEAS 12 TO 17 FT.
.TONIGHT...SE WIND 20 TO 35 KT BECOMING S 30 TO 40 KT AFTER
MIDNIGHT. SEAS 12 TO 19 FT. RAIN AND SNOW.
.WED...S WIND 35 KT BECOMING 25 TO 40 KT IN THE AFTERNOON. SEAS
15 TO 22 FT. RAIN.
.WED NIGHT...S WIND 20 TO 35 KT. SEAS 14 TO 22 FT.
.THU THROUGH FRI...S WIND 30 TO 45 KT. SEAS 15 TO 23 FT.
.SAT...S WIND 15 TO 30 KT. SEAS 13 TO 21 FT.

$$

PKZ414-220215-
BERING SEA OFFSHORE EAST OF 171W-
353 AM AKST TUE FEB 21 2017

...GALE WARNING TODAY AND WEDNESDAY...

.TODAY...E WIND 30 TO 45 KT BECOMING SW 15 TO 30 KT IN THE
AFTERNOON. SEAS IN ICE FREE WATERS 5 TO 10 FT. SNOW.
.TONIGHT...S WIND 15 TO 30 KT. SEAS IN ICE FREE WATERS 4 TO 9 FT.
.WED...S WIND 15 TO 30 KT INCREASING TO 25 TO 40 KT IN THE
AFTERNOON. SEAS IN ICE FREE WATERS 6 TO 11 FT.
.WED NIGHT...S WIND 25 TO 40 KT. SEAS IN ICE FREE WATERS 7 TO 12
FT.
.THU THROUGH SAT...S WIND 20 TO 35 KT. SEAS IN ICE FREE WATERS 6
TO
11 FT.

$$

262 
FZAK62 PAFC 220031
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
331 PM AKST TUE FEB 21 2017

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.

PKZ499-221515-
331 PM AKST TUE FEB 21 2017
.SYNOPSIS FOR CENTRAL BERING SEA...
BOGOSLOF VOLCANO AT 54N 168W REMAINS ACTIVE. A 963 MB LOW AT 51N
170E WILL MOVE TO 54N 169E AT 955 MB WED AFTERNOON...THEN MOVE TO
59N 174E AT 974 MB THU AFTERNOON. AN ASSOCIATED FRONT OVER THE
WESTERN ALEUTIANS WILL MOVE TO THE CENTRAL BERING WED AND MOVE
INLAND OVER SOUTHWEST ALASKA THU MORNING.

$$

PKZ411-221515-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
331 PM AKST TUE FEB 21 2017

...STORM WARNING TONIGHT...

.TONIGHT...E WIND 35 TO 50 KT. SEAS 16 TO 24 FT. SNOW AND RAIN.
.WED...S WIND 30 TO 45 KT. SEAS 19 TO 24 FT.
.WED NIGHT...S WIND 30 TO 40 KT. SEAS 20 TO 29 FT. SNOW AND 
RAIN SHOWERS.
.THU...S WIND 40 KT. SEAS 23 TO 29 FT.
.THU NIGHT...SW WIND 25 TO 35 KT. SEAS 16 TO 26 FT.
.FRI THROUGH SAT...SW WIND 25 TO 40 KT. SEAS 15 TO 30 FT.
.SUN...SW WIND 15 TO 25 KT. SEAS 9 TO 15 FT.

$$

PKZ412-221515-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
331 PM AKST TUE FEB 21 2017

...GALE WARNING THROUGH WEDNESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING TONIGHT...

.TONIGHT...E WIND 20 TO 35 KT INCREASING TO 30 TO 45 KT AFTER
MIDNIGHT. SEAS 11 TO 19 FT. HEAVY FREEZING SPRAY N OF 58N. SNOW.
.WED...SE WIND 25 TO 40 KT. SEAS 11 TO 19 FT. RAIN AND SNOW.
.WED NIGHT...S WIND 20 TO 35 KT. SEAS 15 TO 19 FT.
.THU...S WIND 25 TO 35 KT. SEAS 15 TO 25 FT.
.THU NIGHT...S WIND 30 KT. SEAS 18 TO 25 FT.
.FRI THROUGH SAT...S WIND 25 TO 40 KT. SEAS 16 TO 26 FT.
.SUN...SW WIND 25 KT. SEAS 11 TO 16 FT.

$$

PKZ413-221515-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
331 PM AKST TUE FEB 21 2017

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SE WIND 20 TO 35 KT BECOMING S 30 TO 40 KT AFTER
MIDNIGHT. SEAS 12 TO 18 FT. RAIN AND SNOW.
.WED...S WIND 25 TO 40 KT. SEAS 15 TO 21 FT. RAIN.
.WED NIGHT...S WIND 20 TO 35 KT. SEAS 14 TO 22 FT.
.THU...S WIND 25 TO 35 KT. SEAS 14 TO 22 FT.
.THU NIGHT...SW WIND 20 TO 30 KT. SEAS 16 TO 23 FT.
.FRI...S WIND 30 TO 45 KT. SEAS 16 TO 25 FT.
.SAT...S WIND 15 TO 30 KT. SEAS 13 TO 21 FT.
.SUN...SW WIND 10 TO 20 KT. SEAS 9 TO 13 FT.

$$

PKZ414-221515-
BERING SEA OFFSHORE EAST OF 171W-
331 PM AKST TUE FEB 21 2017

...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...S WIND 15 TO 30 KT. SEAS IN ICE FREE WATERS 4 TO 9 FT.
.WED...S WIND 25 TO 40 KT. SEAS IN ICE FREE WATERS 6 TO 11 FT.
.WED NIGHT...S WIND 30 TO 40 KT DIMINISHING TO 20 TO 35 KT AFTER
MIDNIGHT. SEAS IN ICE FREE WATERS 8 TO 13 FT. RAIN AND SNOW.
.THU...S WIND 15 TO 30 KT. SEAS IN ICE FREE WATERS 5 TO 10 FT.
.THU NIGHT...SW WIND UP TO 20 KT. SEAS IN ICE FREE WATERS 5 TO
10 FT.
.FRI THROUGH SUN...SW WIND 20 TO 35 KT. SEAS IN ICE FREE WATERS 6
TO 11 FT.

$$

949 
FZAK62 PAFC 221301
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
401 AM AKST WED FEB 22 2017

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.

PKZ499-230215-
401 AM AKST WED FEB 22 2017
.SYNOPSIS FOR CENTRAL BERING SEA...BOGOSLOF VOLCANO AT 54N 168W
 REMAINS ACTIVE. A 948 MB LOW NEAR 55N 168E MOVES TO 56N 173E AT
963 MB LATE TONIGHT...THEN MOVES TO 63N 179W AT 989 MB LATE THU
NIGHT. AN ASSOCIATED FRONT OVER THE CENTRAL BERING MOVES TO THE
EASTERN BERING TONIGHT...THEN WEAKENS AS IT MOVES INTO ALASKA.
ANOTHER STRONG FRONT MOVES INTO THE WESTERN ALEUTIANS THU NIGHT.

$$

PKZ411-230215-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
401 AM AKST WED FEB 22 2017

...GALE WARNING THROUGH THURSDAY...

.TODAY...S WIND 30 TO 45 KT. SEAS 19 TO 24 FT.
.TONIGHT...S WIND 30 TO 45 KT. SEAS 19 TO 27 FT.
.THU...SW WIND 35 TO 45 KT. SEAS 21 TO 29 FT.
.THU NIGHT...SW WIND 25 TO 35 KT. SEAS 15 TO 23 FT.
.FRI...S WIND 35 TO 50 KT. SEAS 16 TO 31 FT.
.SAT...SW WIND 25 TO 40 KT. SEAS 14 TO 29 FT.
.SUN...SW WIND 15 TO 25 KT. SEAS 9 TO 13 FT.

$$

PKZ412-230215-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
401 AM AKST WED FEB 22 2017

...GALE WARNING THROUGH THURSDAY...

.TODAY...SE WIND 30 TO 45 KT. SEAS 12 TO 20 FT. RAIN AND SNOW.
.TONIGHT...S WIND 25 TO 40 KT. SEAS 16 TO 19 FT.
.THU...S WIND 25 TO 40 KT. SEAS 16 TO 26 FT.
.THU NIGHT...SW WIND 25 TO 35 KT. SEAS 18 TO 26 FT.
.FRI THROUGH SAT...SW WIND 30 TO 45 KT. SEAS 15 TO 28 FT.
.SUN...W WIND 15 TO 25 KT. SEAS 10 TO 14 FT.

$$

PKZ413-230215-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
401 AM AKST WED FEB 22 2017

...GALE WARNING THROUGH THURSDAY...

.TODAY...S WIND 25 TO 40 KT. SEAS 16 TO 22 FT. RAIN.
.TONIGHT...S WIND 25 TO 40 KT. SEAS 14 TO 22 FT.
.THU...SW WIND 25 TO 35 KT. SEAS 16 TO 24 FT.
.THU NIGHT...SW WIND 20 TO 30 KT. SEAS 16 TO 23 FT.
.FRI THROUGH SAT...SW WIND 30 TO 45 KT. SEAS 13 TO 27 FT.
.SUN...NW WIND 10 TO 20 KT. SEAS 8 TO 12 FT.

$$

PKZ414-230215-
BERING SEA OFFSHORE EAST OF 171W-
401 AM AKST WED FEB 22 2017

...GALE WARNING THROUGH TONIGHT...

.TODAY...S WIND 25 TO 40 KT. SEAS IN ICE FREE WATERS 6 TO 11 FT.
RAIN AND SNOW.
.TONIGHT...S WIND 25 TO 40 KT. SEAS IN ICE FREE WATERS 8 TO 13 FT.
.THU...S WIND 15 TO 30 KT. SEAS IN ICE FREE WATERS 5 TO 10 FT.
.THU NIGHT...SW WIND 10 TO 20 KT. SEAS IN ICE FREE WATERS 5 TO
10 FT.
.FRI THROUGH SAT...SW WIND 20 TO 35 KT. SEAS IN ICE FREE WATERS 8
TO
13 FT.
.SUN...W WIND 15 TO 25 KT. SEAS IN ICE FREE WATERS 5 TO 10 FT.

$$

086 
FZAK62 PAFC 230030
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
330 PM AKST WED FEB 22 2017

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.

PKZ499-231415-
330 PM AKST WED FEB 22 2017
.SYNOPSIS FOR CENTRAL BERING SEA...

BOGOSLOF VOLCANO AT 54N 168W REMAINS ACTIVE. A 953 MB LOW AT 54N
169E WILL BE 975 MB AT 59N 175E THU AFTERNOON THEN WEAKEN TO 1004
MB AT 65N 174W FRI AFTERNOON. THE ASSOCIATED FRONT OVER THE
EASTERN BERING WILL MOVE INLAND OVER SOUTHWEST ALASKA TONIGHT. A
NORTHWEST PACIFIC LOW WILL BE A 968 MB LOW AT 55N 167E FRI AFTERNOON.

$$

PKZ411-231415-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
330 PM AKST WED FEB 22 2017

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...S WIND 30 TO 45 KT. SEAS 19 TO 27 FT. RAIN SHOWERS AND SNOW
SHOWERS.
.THU...SW WIND 35 TO 45 KT. SEAS 21 TO 29 FT. RAIN SHOWERS AND SNOW
SHOWERS.
.THU NIGHT...SW WIND 25 TO 35 KT. SEAS 15 TO 23 FT. SNOW AND RAIN
SHOWERS.
.FRI...S WIND 30 TO 45 KT. SEAS 14 TO 27 FT.
.FRI NIGHT...SW WIND 35 TO 50 KT. SEAS 23 TO 33 FT.
.SAT...SW WIND 30 TO 45 KT. SEAS 15 TO 30 FT.
.SUN...SW WIND 15 TO 25 KT. SEAS 9 TO 13 FT.
.MON...SE WIND 20 TO 30 KT. SEAS 8 TO 12 FT.

$$

PKZ412-231415-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
330 PM AKST WED FEB 22 2017

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...S WIND 20 TO 35 KT. SEAS 16 TO 20 FT.
.THU...S WIND 25 TO 40 KT. SEAS 15 TO 26 FT. SNOW SHOWERS AND RAIN
SHOWERS.
.THU NIGHT...SW WIND 25 TO 35 KT. SEAS 17 TO 26 FT.
.FRI...S WIND 30 TO 45 KT. SEAS 17 TO 22 FT.
.FRI NIGHT...S WIND 35 TO 45 KT. SEAS 19 TO 28 FT.
.SAT...SW WIND 25 TO 40 KT. SEAS 17 TO 29 FT.
.SUN...W WIND 15 TO 25 KT. SEAS 10 TO 14 FT.
.MON...S WIND 10 TO 25 KT. SEAS 6 TO 10 FT.

$$

PKZ413-231415-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
330 PM AKST WED FEB 22 2017

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...S WIND 25 TO 40 KT. SEAS 14 TO 22 FT.
.THU...SW WIND 25 TO 35 KT. SEAS 15 TO 23 FT.
.THU NIGHT...SW WIND 20 TO 30 KT. SEAS 16 TO 23 FT.
.FRI...S WIND 30 TO 45 KT. SEAS 16 TO 24 FT.
.FRI NIGHT...S WIND 30 TO 45 KT. SEAS 17 TO 27 FT.
.SAT...SW WIND 20 TO 35 KT. SEAS 14 TO 22 FT.
.SUN...NW WIND 10 TO 20 KT. SEAS 8 TO 12 FT.
.MON...E WIND 15 TO 30 KT. SEAS 6 TO 9 FT.

$$

PKZ414-231415-
BERING SEA OFFSHORE EAST OF 171W-
330 PM AKST WED FEB 22 2017

...GALE WARNING TONIGHT...

.TONIGHT...S WIND 25 TO 40 KT. SEAS IN ICE FREE WATERS 8 TO 13 FT.
.THU...S WIND 15 TO 30 KT. SEAS IN ICE FREE WATERS 5 TO 10 FT.
.THU NIGHT...SW WIND 10 TO 20 KT. SEAS IN ICE FREE WATERS 5 TO
10 FT.
.FRI...SW WIND 15 TO 30 KT. SEAS IN ICE FREE WATERS 5 TO 10 FT.
.FRI NIGHT...S WIND 20 TO 35 KT. SEAS IN ICE FREE WATERS 6 TO 11
FT.
.SAT...SW WIND 20 TO 35 KT. SEAS IN ICE FREE WATERS 7 TO 12 FT.
.SUN...W WIND 15 TO 25 KT. SEAS IN ICE FREE WATERS 5 TO 10 FT.
.MON...NW WIND UP TO 20 KT. SEAS IN ICE FREE WATERS 3 TO 7 FT.

$$

879 
FZAK62 PAFC 231242
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
342 AM AKST THU FEB 23 2017

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.

PKZ499-240230-
342 AM AKST THU FEB 23 2017
.SYNOPSIS FOR CENTRAL BERING SEA...

BOGOSLOF VOLCANO AT 54N 168W REMAINS ACTIVE. A 964 MB LOW AT 56N
172E STEADILY WEAKENS TO 1017 MB AS IT MOVES TO 67N 165W BY SAT
MORNING. THE ASSOCIATED FRONT MOVES INTO WESTERN ALASKA THU NIGHT.
A 971 MB LOW MOVES TO 52N 163E FRI MORNING CONTINUING TO 60N 172E
AT 981 MB BY SAT MORNING. ITS ASSOCIATED FRONT MOVES INTO THE
WESTERN BERING BY SAT MORNING.

$$

PKZ411-240230-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
342 AM AKST THU FEB 23 2017

...GALE WARNING THROUGH FRIDAY...

.TODAY...SW WIND 35 TO 45 KT. SEAS 21 TO 28 FT. RAIN SHOWERS AND
SNOW SHOWERS.
.TONIGHT...SW WIND 25 TO 35 KT. SEAS 15 TO 23 FT. SNOW.
.FRI...S WIND 30 TO 45 KT. SEAS 14 TO 26 FT. RAIN AND SNOW.
.FRI NIGHT...SW WIND 35 TO 50 KT. SEAS 23 TO 30 FT.
.SAT...SW WIND 30 TO 45 KT. SEAS 13 TO 28 FT.
.SUN...W WIND 10 TO 25 KT. SEAS 8 TO 13 FT.
.MON...E WIND 20 TO 35 KT. SEAS 8 TO 13 FT.

$$

PKZ412-240230-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
342 AM AKST THU FEB 23 2017

...GALE WARNING THROUGH FRIDAY...

.TODAY...S WIND 25 TO 40 KT. SEAS 15 TO 25 FT. RAIN SHOWERS.
.TONIGHT...SW WIND 25 TO 35 KT. SEAS 17 TO 25 FT.
.FRI...S WIND 30 TO 45 KT. SEAS 17 TO 21 FT. RAIN AND SNOW.
.FRI NIGHT...S WIND 35 TO 45 KT. SEAS 18 TO 27 FT.
.SAT...SW WIND 30 TO 45 KT. SEAS 14 TO 28 FT.
.SUN...W WIND 10 TO 20 KT. SEAS 9 TO 15 FT.
.MON...NE WIND 10 TO 25 KT. SEAS 6 TO 9 FT.

$$

PKZ413-240230-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
342 AM AKST THU FEB 23 2017

...GALE WARNING TODAY AND FRIDAY...

.TODAY...SW WIND 20 TO 35 KT. SEAS 15 TO 23 FT.
.TONIGHT...SW WIND 20 TO 30 KT. SEAS 16 TO 22 FT.
.FRI...S WIND 30 TO 45 KT. SEAS 16 TO 24 FT. RAIN.
.FRI NIGHT...S WIND 30 TO 45 KT. SEAS 17 TO 27 FT.
.SAT...SW WIND 20 TO 35 KT. SEAS 13 TO 21 FT.
.SUN...NW WIND UP TO 20 KT. SEAS 7 TO 12 FT.
.MON...E WIND 15 TO 30 KT. SEAS 6 TO 11 FT.

$$

PKZ414-240230-
BERING SEA OFFSHORE EAST OF 171W-
342 AM AKST THU FEB 23 2017

...GALE WARNING TODAY...

.TODAY...S WIND 20 TO 35 KT BECOMING SW 15 TO 25 KT IN THE
AFTERNOON. SEAS 5 TO 10 FT.
.TONIGHT...SW WIND 10 TO 25 KT. SEAS 5 TO 10 FT.
.FRI...SW WIND 15 TO 30 KT. SEAS 5 TO 10 FT.
.FRI NIGHT...S WIND 25 TO 40 KT. SEAS 6 TO 11 FT.
.SAT THROUGH SUN...SW WIND 20 TO 35 KT. SEAS 6 TO 11 FT.
.MON...N WIND 20 KT. SEAS 3 TO 6 FT.

$$

579 
FZAK62 PAFC 240027
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
327 PM AKST THU FEB 23 2017

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.

PKZ499-241415-
327 PM AKST THU FEB 23 2017
.SYNOPSIS FOR CENTRAL BERING SEA...
BOGOSLOF VOLCANO AT 54N 168W REMAINS ACTIVE. A 974 MB LOW NEAR
59N 174E MOVES TO 64N 176W AND WEAKENS TO 1006 MB FRIDAY
AFTERNOON. A DEVELOPING NORTH PACIFIC LOW MOVES TO NEAR 55N 167E
AT 969 MB FRIDAY AFTERNOON THEN TO 62N 177E AT 982 MB SATURDAY
MORNING.

$$

PKZ411-241415-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
327 PM AKST THU FEB 23 2017

...STORM WARNING FRIDAY NIGHT...

.TONIGHT...SW WIND 25 TO 40 KT. SEAS 15 TO 23 FT.
.FRI...S WIND 30 TO 45 KT. SEAS 15 TO 23 FT. RAIN.
.FRI NIGHT...SW WIND 35 TO 50 KT. SEAS 22 TO 33 FT. RAIN.
.SAT...SW WIND 35 TO 50 KT. SEAS 17 TO 32 FT.
.SAT NIGHT...W WIND 15 TO 30 KT. SEAS 12 TO 20 FT.
.SUN...W WIND 10 TO 25 KT. SEAS 8 TO 13 FT.
.MON THROUGH TUE...SE WIND 20 TO 35 KT. SEAS 10 TO 18 FT.

$$

PKZ412-241415-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
327 PM AKST THU FEB 23 2017

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...SW WIND 25 TO 40 KT. SEAS 17 TO 25 FT.
.FRI...S WIND 30 TO 45 KT. SEAS 16 TO 21 FT. RAIN.
.FRI NIGHT...S WIND 35 TO 45 KT. SEAS 16 TO 27 FT. RAIN WITH SNOW.
.SAT...SW WIND 30 TO 45 KT. SEAS 19 TO 28 FT.
.SAT NIGHT...SW WIND 15 TO 30 KT. SEAS 15 TO 23 FT.
.SUN...W WIND 10 TO 20 KT. SEAS 9 TO 15 FT.
.MON...NE WIND 10 TO 25 KT. SEAS 6 TO 9 FT.
.TUE...E WIND 15 TO 30 KT. SEAS 5 TO 10 FT.

$$

PKZ413-241415-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
327 PM AKST THU FEB 23 2017

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...SW WIND 20 TO 35 KT. SEAS 16 TO 22 FT.
.FRI...S WIND 25 TO 35 KT INCREASING TO 35 TO 45 KT IN THE
AFTERNOON. SEAS 14 TO 18 FT BUILDING TO 16 TO 24 FT IN THE
AFTERNOON. RAIN.
.FRI NIGHT...S WIND 30 TO 45 KT. SEAS 18 TO 26 FT. RAIN.
.SAT...SW WIND 20 TO 35 KT. SEAS 15 TO 23 FT.
.SAT NIGHT...SW WIND 10 TO 25 KT. SEAS 10 TO 17 FT.
.SUN...NW WIND 10 TO 25 KT. SEAS 7 TO 12 FT.
.MON THROUGH TUE...E WIND 20 TO 35 KT. SEAS 8 TO 13 FT.

$$

PKZ414-241415-
BERING SEA OFFSHORE EAST OF 171W-
327 PM AKST THU FEB 23 2017

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...SW WIND 15 TO 25 KT. SEAS 8 TO 16 FT.
.FRI...SW WIND 15 TO 30 KT. SEAS 9 TO 16 FT.
.FRI NIGHT...S WIND 25 TO 40 KT. SEAS 10 TO 20 FT.
.SAT...SW WIND 25 TO 40 KT. SEAS 14 TO 20 FT.
.SAT NIGHT...SW WIND 15 TO 30 KT. SEAS 12 TO 17 FT.
.SUN...SW WIND 10 TO 25 KT. SEAS 9 TO 14 FT.
.MON THROUGH TUE...NE WIND 25 KT. SEAS 6 TO 9 FT.

$$

914 
FZAK62 PAFC 241255
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
355 AM AKST FRI FEB 24 2017

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.

PKZ499-250315-
355 AM AKST FRI FEB 24 2017
.SYNOPSIS FOR CENTRAL BERING SEA...

BOGOSLOF VOLCANO AT 54N 168W REMAINS ACTIVE. A 992 MB LOW AT 61N
180 MERGES WITH A 971 MB SOUTH KAMCHATKA LOW TO FORM A 968 MB LOW
NEAR 55N 166E FRI AFTERNOON. THIS LOW WEAKENS TO 1004 MB AS IT
MOVES TO 68N 168W SUN MORNING. THE ASSOCIATED FRONT EXTENDS
THROUGH THE CENTRAL ALEUTIANS BY SUN MORNING.

$$

PKZ411-250315-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
355 AM AKST FRI FEB 24 2017

...STORM WARNING TONIGHT AND SATURDAY...

.TODAY...S WIND 30 TO 45 KT. SEAS BUILDING TO 16 TO 24 FT. RAIN.
.TONIGHT...SW WIND 35 TO 50 KT. GUSTS TO 65 KT. SEAS 22 TO 33 FT.
RAIN.
.SAT...SW WIND 35 TO 50 KT DIMINISHING TO 20 TO 35 KT IN THE
AFTERNOON. GUSTS TO 65 KT IN THE MORNING. SEAS 17 TO 32 FT.
.SAT NIGHT...SW WIND 15 TO 30 KT. SEAS 12 TO 20 FT.
.SUN...W WIND 10 TO 25 KT. SEAS 8 TO 13 FT.
.MON THROUGH TUE...E WIND 25 TO 40 KT. SEAS 9 TO 17 FT.

$$

PKZ412-250315-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
355 AM AKST FRI FEB 24 2017

...GALE WARNING THROUGH SATURDAY...

.TODAY...SW WIND 35 KT BECOMING S IN THE AFTERNOON. SEAS 16 TO 21
FT. RAIN.
.TONIGHT...S WIND 35 TO 45 KT. SEAS 16 TO 27 FT. RAIN AND SNOW.
.SAT...SW WIND 30 TO 45 KT DIMINISHING TO 20 TO 35 KT IN THE
AFTERNOON. SEAS 19 TO 28 FT.
.SAT NIGHT...SW WIND 15 TO 30 KT. SEAS 15 TO 23 FT.
.SUN...W WIND 10 TO 25 KT. SEAS 9 TO 15 FT.
.MON...NW WIND 10 TO 25 KT. SEAS 6 TO 11 FT.
.TUE...NE WIND 25 KT. SEAS 5 TO 8 FT.

$$

PKZ413-250315-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
355 AM AKST FRI FEB 24 2017

...GALE WARNING THROUGH SATURDAY...

.TODAY...S WIND 30 TO 45 KT. SEAS 15 TO 22 FT. RAIN.
.TONIGHT...S WIND 30 TO 45 KT. SEAS 15 TO 26 FT. RAIN.
.SAT...SW WIND 20 TO 35 KT. SEAS 15 TO 23 FT. RAIN.
.SAT NIGHT...SW WIND 10 TO 25 KT. SEAS 10 TO 17 FT.
.SUN...NW WIND UP TO 20 KT. SEAS 7 TO 12 FT.
.MON THROUGH TUE...E WIND 15 TO 30 KT. SEAS 6 TO 10 FT.

$$

PKZ414-250315-
BERING SEA OFFSHORE EAST OF 171W-
355 AM AKST FRI FEB 24 2017

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...SW WIND 15 TO 25 KT. SEAS 5 TO 10 FT.
.TONIGHT...S WIND 25 TO 40 KT. SEAS 6 TO 11 FT.
.SAT...SW WIND 25 TO 40 KT. SEAS 7 TO 12 FT. RAIN AND SNOW.
.SAT NIGHT...SW WIND 15 TO 30 KT. SEAS 6 TO 11 FT.
.SUN...W WIND 10 TO 25 KT. SEAS 4 TO 9 FT.
.MON THROUGH TUE...N WIND 20 TO 35 KT. SEAS 5 TO 10 FT.

$$

825 
FZAK62 PAFC 250021
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
321 PM AKST FRI FEB 24 2017

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.

PKZ499-251515-
321 PM AKST FRI FEB 24 2017
.SYNOPSIS FOR CENTRAL BERING SEA...
BOGOSLOF VOLCANO AT 54N 168W REMAINS ACTIVE. A 1007 MB LOW OVER
THE GULF OF ANADYR DISSIPATES TONIGHT. A 969 MB LOW NEAR 54N 167E
MAKES LANDFALL OVER THE SOUTHERN COAST OF RUSSIA SATURDAY. HIGH
PRESSURE BUILDS OVER THE SOUTHWESTERN BERING SEA ON SUNDAY.

$$

PKZ411-251515-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
321 PM AKST FRI FEB 24 2017

...STORM WARNING THROUGH SATURDAY...

.TONIGHT...SW WIND 35 TO 50 KT. SEAS 22 TO 32 FT. RAIN AND SNOW.
.SAT...SW WIND 35 TO 50 KT DIMINISHING TO 25 TO 40 KT IN THE
AFTERNOON. SEAS 17 TO 31 FT.
.SAT NIGHT...W WIND 15 TO 30 KT. SEAS 13 TO 21 FT.
.SUN...W WIND 10 TO 25 KT. SEAS 9 TO 15 FT.
.SUN NIGHT...W WIND 10 TO 25 KT. SEAS 6 TO 11 FT.
.MON THROUGH WED...SE WIND 25 TO 40 KT. SEAS 9 TO 17 FT.

$$

PKZ412-251515-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
321 PM AKST FRI FEB 24 2017

...GALE WARNING THROUGH SATURDAY...

.TONIGHT...S WIND 35 TO 45 KT. SEAS 16 TO 27 FT. RAIN AND SNOW.
.SAT...SW WIND 30 TO 45 KT. SEAS 19 TO 27 FT.
.SAT NIGHT...SW WIND 15 TO 30 KT. SEAS 15 TO 23 FT.
.SUN...W WIND 10 TO 25 KT. SEAS 12 TO 16 FT.
.SUN NIGHT...NW WIND 15 TO 30 KT. SEAS 10 TO 14 FT.
.MON...NW WIND 15 TO 30 KT. SEAS 6 TO 11 FT.
.TUE THROUGH WED...NE WIND 15 TO 25 KT. SEAS 4 TO 8 FT.

$$

PKZ413-251515-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
321 PM AKST FRI FEB 24 2017

...STORM WARNING TONIGHT...

.TONIGHT...S WIND 35 TO 50 KT. SEAS 16 TO 25 FT. RAIN.
.SAT...SW WIND 20 TO 35 KT. SEAS 14 TO 22 FT. RAIN.
.SAT NIGHT...W WIND 10 TO 25 KT. SEAS 11 TO 17 FT. RAIN.
.SUN...NW WIND 10 TO 20 KT. SEAS 9 TO 12 FT.
.SUN NIGHT...N WIND 10 TO 20 KT. SEAS 7 TO 10 FT.
.MON THROUGH WED...NE WIND 15 TO 30 KT. SEAS 6 TO 11 FT.

$$

PKZ414-251515-
BERING SEA OFFSHORE EAST OF 171W-
321 PM AKST FRI FEB 24 2017

...GALE WARNING THROUGH SATURDAY...

.TONIGHT...S WIND 20 TO 30 KT INCREASING TO 25 TO 40 KT AFTER
MIDNIGHT. SEAS 7 TO 12 FT.
.SAT...SW WIND 25 TO 40 KT. SEAS 9 TO 17 FT. RAIN AND SNOW.
.SAT NIGHT...SW WIND 15 TO 30 KT. SEAS 8 TO 13 FT. RAIN.
.SUN...W WIND 15 TO 30 KT. SEAS 7 TO 12 FT.
.SUN NIGHT...NW WIND 10 TO 20 KT. SEAS 4 TO 9 FT.
.MON THROUGH WED...N WIND 20 TO 35 KT. SEAS 5 TO 10 FT.

$$

151 
FZAK62 PAFC 251249
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
349 AM AKST SAT FEB 25 2017

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.

PKZ499-260245-
349 AM AKST SAT FEB 25 2017
.SYNOPSIS FOR CENTRAL BERING SEA...

BOGOSLOF VOLCANO AT 54N 168W REMAINS ACTIVE. A 977 MB NORTH
KAMCHATKA LOW WEAKENS TO 1016 MB AS IT MOVES TO 69N 165W BY MON
MORNING. THE ASSOCIATED FRONT SWEEPS ACROSS THE BERING SEA INTO
WESTERN ALASKA BY MON MORNING. HIGH PRESSURE MOVES OVER THE BERING
BY MON MORNING.

$$

PKZ411-260245-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
349 AM AKST SAT FEB 25 2017

...GALE WARNING TODAY...

.TODAY...SW WIND 30 TO 45 KT. SEAS 19 TO 32 FT.
.TONIGHT...W WIND 15 TO 30 KT. SEAS 13 TO 21 FT.
.SUN...W WIND 10 TO 25 KT. SEAS 9 TO 15 FT.
.SUN NIGHT...W WIND 10 TO 25 KT. SEAS 7 TO 11 FT.
.MON THROUGH WED...E WIND 25 TO 40 KT. SEAS 9 TO 17 FT.

$$

PKZ412-260245-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
349 AM AKST SAT FEB 25 2017

...GALE WARNING TODAY...

.TODAY...SW WIND 30 TO 45 KT. SEAS 21 TO 28 FT.
.TONIGHT...SW WIND 15 TO 30 KT. SEAS 15 TO 23 FT.
.SUN...W WIND 10 TO 25 KT. SEAS 13 TO 16 FT.
.SUN NIGHT...NW WIND 15 TO 25 KT. SEAS 10 TO 13 FT.
.MON...N WIND 10 TO 25 KT. SEAS 6 TO 11 FT.
.TUE THROUGH WED...E WIND 15 TO 30 KT. SEAS 4 TO 9 FT.

$$

PKZ413-260245-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
349 AM AKST SAT FEB 25 2017

...GALE WARNING TODAY...

.TODAY...SW WIND 20 TO 35 KT. SEAS 14 TO 22 FT. RAIN.
.TONIGHT...SW WIND 15 TO 30 KT. SEAS 11 TO 17 FT. RAIN.
.SUN...NW WIND 10 TO 25 KT BECOMING 15 KT IN THE AFTERNOON. SEAS
10 TO 13 FT.
.SUN NIGHT...N WIND 20 KT. SEAS 7 TO 10 FT.
.MON THROUGH WED...E WIND 15 TO 30 KT. SEAS 7 TO 12 FT.

$$

PKZ414-260245-
BERING SEA OFFSHORE EAST OF 171W-
349 AM AKST SAT FEB 25 2017

...GALE WARNING TODAY...

.TODAY...SW WIND 25 TO 40 KT. SEAS 9 TO 17 FT. RAIN.
.TONIGHT...SW WIND 15 TO 30 KT. SEAS 9 TO 14 FT. RAIN AND SNOW.
.SUN...W WIND 15 TO 30 KT. SEAS 7 TO 12 FT. RAIN.
.SUN NIGHT...NW WIND 20 KT. SEAS 5 TO 10 FT.
.MON THROUGH WED...NE WIND 15 TO 30 KT. SEAS 5 TO 10 FT.

$$

066 
FZAK62 PAFC 260007
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
307 PM AKST SAT FEB 25 2017

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.

PKZ499-261430-
307 PM AKST SAT FEB 25 2017
.SYNOPSIS FOR CENTRAL BERING SEA...
BOGOSLOF VOLCANO AT 54N 168W REMAINS ACTIVE. A FRONT OVER THE
SOUTHERN BERING AND ALEUTIANS PERSISTS THROUGH SUN NIGHT...THEN
DISSIPATES. ANOTHER FRONT MOVES INTO THE WESTERN ALEUTIANS MON.
HIGH PRESSURE OVER THE WESTERN BERING SUN AFTERNOON MOVES TO THE
CENTRAL BERING BY MON AFTERNOON.

$$

PKZ411-261430-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE-
307 PM AKST SAT FEB 25 2017

.TONIGHT...W WIND 15 TO 30 KT. SEAS 13 TO 21 FT.
.SUN...W WIND 10 TO 25 KT. SEAS 9 TO 14 FT.
.SUN NIGHT...NW WIND UP TO 20 KT BECOMING NE 10 TO 25 KT 
AFTER MIDNIGHT. SEAS 7 TO 10 FT.
.MON...E WIND 20 TO 35 KT. SEAS 7 TO 12 FT.
.MON NIGHT...E WIND 25 TO 40 KT. SEAS 8 TO 16 FT.
.TUE THROUGH THU...E WIND 25 TO 40 KT. SEAS 8 TO 16 FT.

$$

PKZ412-261430-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N-
307 PM AKST SAT FEB 25 2017

.TONIGHT...SW WIND 15 TO 30 KT. SEAS 14 TO 22 FT.
.SUN...W WIND 10 TO 20 KT. SEAS 12 TO 16 FT.
.SUN NIGHT...NW WIND 15 TO 25 KT. SEAS 8 TO 11 FT.
.MON...NW WIND 10 TO 25 KT. SEAS 6 TO 10 FT.
.MON NIGHT...N WIND 10 TO 25 KT. SEAS 5 TO 9 FT.
.TUE THROUGH THU...NE WIND 15 TO 30 KT. SEAS 4 TO 9 FT.

$$

PKZ413-261430-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N-
307 PM AKST SAT FEB 25 2017

.TONIGHT...SW WIND 15 TO 30 KT. SEAS 11 TO 16 FT. RAIN.
.SUN...NW WIND 10 TO 25 KT. SEAS 10 TO 13 FT.
.SUN NIGHT...N WIND 15 TO 25 KT. SEAS 9 FT.
.MON...NE WIND 15 TO 30 KT. SEAS 6 TO 9 FT.
.MON NIGHT...E WIND 15 TO 30 KT. SEAS 6 TO 11 FT.
.TUE THROUGH THU...E WIND 15 TO 30 KT. SEAS 7 TO 12 FT.

$$

PKZ414-261430-
BERING SEA OFFSHORE EAST OF 171W-
307 PM AKST SAT FEB 25 2017

.TONIGHT...SW WIND 15 TO 30 KT. SEAS 8 TO 16 FT. RAIN AND SNOW.
.SUN...SW WIND 15 TO 30 KT. SEAS 7 TO 12 FT. RAIN AND SNOW.
.SUN NIGHT...NW WIND 20 KT. SEAS 5 TO 10 FT. FREEZING SPRAY.
.MON...NW WIND 15 TO 25 KT. SEAS 4 TO 8 FT.
.MON NIGHT...NW WIND 15 TO 25 KT. SEAS 5 TO 8 FT.
.TUE THROUGH THU...N WIND 15 TO 30 KT. SEAS 6 TO 11 FT.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
501 AM AKST Mon Feb 20 2017

.ANALYSIS AND UPPER LEVELS...
The progressive pattern change across AK and the north Pacific is
underway this morning. An upper level trough over the western half
of the AK mainland is bounded by a weakening ridge to the east and
a strong ridge covering much of the Bering. A cut-off upper low is
over the western Bering. At the surface, a deep 950 to 955 mb low
is recurving over the western Aleutians with the associated storm
to hurricane force front curving back across the central Bering
and Aleutians. A ridge is over the eastern Bering and southwest
AK, and the remnants of a low continue to weaken over Prince
William Sound. Weakening snow shower activity persists across the
Kenai Peninsula, the Anchorage Bowl, and the Matanuska and Susitna
valleys.

&&

.MODEL DISCUSSION...
Models are in agreement that the Prince William Sound low will
continue to weaken through tonight, allowing the Bering/Southwest
AK ridge to migrate east. This will allow the Bering front to
reach the southwest coast of AK on Tue, producing a triple point
low that moves into the Gulf of AK on Wed.

While all of this is happening, a new low from Japan races to the
western Aleutians later on Tue, merges with the original low and
then spins through the western Bering into Thu. The leading gale
and storm force front from this merged system crosses the Bering
and Aleutians Tue, and reaches southwest AK on Wed. The trailing
gale force front moves across the Aleutians through Thu.

&&

.AVIATION...
PANC...A threat of snow showers will continue through the
morning as lines of showers rotate up from the Western Kenai. If
one of these lines tracks over the airport expect a period of MVFR
conditions. Otherwise, VFR conditions are expected to continue
through tonight.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
The negatively tilted arctic trough will slowly lift northeastward
across Southcentral today through Tuesday with a ridge building
in behind it. Snow shower activity in the Cook Inlet/Susitna
Valley corridor will gradually diminish today as the trough
passes overhead, lingering longest along the mountains. Showers
will spread out ahead of the trough from eastern Prince William
Sound northward into the western Copper River Basin. Meanwhile,
arctic air will continue to pour across the Alaska and Aleutian
ranges into Southcentral and across the Gulf. Temperatures will
not rise much today, especially over western areas of Southcentral
where the coldest low level air mass will lead to steady or
slowly falling temperatures. Gap winds will be in full force along
the western Gulf and western Prince William Sound.

Temperatures will drop off quickly tonight as clouds decrease
behind the upper trough axis. The cold temperatures will be
short-lived however, as the frontal system currently along the
Aleutians reaches Southcentral Tuesday night. Have upped the
probability of precipitation significantly area-wide Tuesday
night into Wednesday, with high confidence that a fast but stout
upper trough will move through. With arctic air in place expect
snow for all but Kodiak Island.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
A pattern change will be coming for the mainland, but first
another day of the status quo. The stationary upper trough and
arctic air mass will continue to sit over the area for another
day, keeping temperatures firmly in the negatives. There are
pockets of low level clouds forming under the inversion but these
should not be widespread today. Late tonight, an approaching front
from the Bering Sea will begin to bring some offshore flow and
slightly mixed air near the surface which will stop temperatures
from falling as drastically as the last couple nights.

The front will impact the mainland on Tuesday, spreading light
snow from southwest to northeast through the day. Snowfall
accumulation looks to be in the 3 to 6 inch range, with isolated
areas getting more than 6 inches. The front exits from west to
east late Tuesday night, but an active, progressive pattern
persists.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
The big story currently is a hurricane force front over the
western Bering Sea. It looks to have peaked in intensity and
should dissipate today with the strongest of winds remaining over
the far western Bering. The front continues northeastward over the
Bering and will bring blizzard conditions to the Pribilof Islands
this evening and overnight into Tuesday. As the front moves
eastward Unalaska will get a quick shot of snow and blowing snow,
but temperatures will warm enough from downslope to mitigate the
threat by the afternoon hours. The actual warm air will change
precipitation to rain by the late evening. The Alaska Peninsula
is in a similar situation as the front traverses the area Tuesday
morning. As the front exits onto the mainland, another strong low
and front already enter the western Bering Tuesday afternoon. This
one will have more of a south to north trajectory with the warm
front followed by a west to east moving cold front.

&&

.LONG TERM FORECAST (Days 3 through 7)...
Midweek through the weekend forecast will be dominated by a ridge
that will nose in across Southcentral and a trough that will dig
south across the Bering. Guidance remains in good agreement with
bringing a shortwave across the ridge and sliding southeast across
the Gulf of Alaska. There are select differences with the models
with how strong of a wiggle in the flow it will be and more
importantly how far south it will develop. The forecast today
sided closer with the surface placement and features from the EC
and GFS as the NAM seems to be the outlier in how fast it
transitions the low to SE AK. Mid week that will likely bring a
shot of snow back to the area. Ridgetop and higher flow is
looking to remain southwesterly, keeping downsloping chances down.
Beyond that time for southcentral, the trough over the bering will
slide east and allow a front to stall out from the AKPEN and along
the Alaska Range. This will increase overall surface temperatures
as well as bring back the chances for mixed phase winter weather
come late in the week and again over the weekend.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Blizzard Warning 195.
MARINE...Heavy Freezing Spray Warning 121 129 130 131 138 139 141
                                      150 165 185.
		 Storm Warning 177 178.
	     Gale Warning 130 131 138 155 160 165 170 171 172 173
					  174 175 176 179 180 185.

&&

SYNOPSIS AND MODEL DISCUSSION...DS
SOUTHCENTRAL ALASKA...SEB
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...MTL
LONG TERM...SS