Gale Warning 137, NWS Anchorage, AK

445 
FZAK61 PAFC 060002
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST SAT FEB 5 2011

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-061500-
400 PM AKST SAT FEB 5 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 1002 MB LOW NEAR 54N 152W MOVES TO OVER KODIAK ISLAND THIS EVENING
THEN WEAKENS OVER EASTERN BRISTOL BAY SUNDAY MORNING. HIGH PRESSURE
BUILDS OVER THE GULF OF ALASKA SUNDAY AND SHIFTS TO THE EASTERN GULF
MONDAY.

$$

PKZ351-061500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKST SAT FEB 5 2011

...GALE WARNING TONIGHT...

.TONIGHT...E WIND 35 KT. SEAS 15 FT. RAIN AND SNOW. 
.SUN...SE WIND 25 KT. SEAS 15 FT. RAIN AND SNOW. 
.SUN NIGHT...W WIND 20 KT. SEAS 11 FT. 
.MON...SW WIND 15 KT. SEAS 10 FT. 
.MON NIGHT...SE WIND 40 KT. SEAS 11 FT. 
.TUE...SE WIND 35 KT. SEAS 14 FT. 
.WED...S WIND 20 KT. SEAS 19 FT. 
.THU...W WIND 25 KT. SEAS 14 FT.  

$$

PKZ352-061500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 PM AKST SAT FEB 5 2011

...GALE WARNING TONIGHT...

.TONIGHT...E WIND 30 TO 40 KT BECOMING SW 20 KT AFTER MIDNIGHT. SEAS
16 FT. RAIN AND SNOW. 
.SUN...W WIND 25 KT. SEAS 12 FT. RAIN AND SNOW. 
.SUN NIGHT...W WIND 25 KT. SEAS 12 FT. 
.MON...S WIND 35 KT. SEAS 12 FT. 
.MON NIGHT...SE WIND 45 KT. SEAS 15 FT. 
.TUE...SE WIND 30 KT. SEAS 20 FT. 
.WED...SW WIND 20 KT. SEAS 20 FT. 
.THU...W WIND 25 KT. SEAS 13 FT.  

$$

588 
FZAK61 PAFC 061228
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKST SUN FEB 6 2011

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

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.

PKZ399-070300-
400 AM AKST SUN FEB 6 2011
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A WEATHER FRONT OVER THE NORTHERN GULF REMAINS STATIONARY AS IT 
DISSIPATES SUN AFTERNOON. ANOTHER WEATHER FRONT MOVES INTO THE
SOUTHERN TO WESTERN GULF MON NIGHT.
$$

PKZ351-070300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 AM AKST SUN FEB 6 2011

.TODAY...E WIND 20 TO 30 KT SHIFTING TO W 20 KT IN THE AFTERNOON.
SEAS 15 FT. RAIN AND SNOW. 
.TONIGHT...W WIND 15 TO 25 KT. SEAS 12 FT. 
.MON...SW WIND 10 TO 20 KT BECOMING SE 15 KT IN THE AFTERNOON. 
SEAS 10 FT. 
.MON NIGHT...SE WIND 30 TO 40 KT. SEAS 12 FT. 
.TUE...SE WIND 30 TO 40 KT. SEAS 19 FT. 
.WED...SE WIND 30 KT. SEAS 21 FT. 
.THU...SW WIND 30 KT. SEAS 14 FT.  

$$

PKZ352-070300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF 144W
400 AM AKST SUN FEB 6 2011

.TODAY...W WIND 15 TO 25 KT. SEAS 12 FT. 
.TONIGHT...SW WIND 15 TO 25 KT. SEAS 12 FT. 
.MON...S WIND 15 KT INCREASING TO SE 20 TO 30 KT IN THE AFTERNOON.
SEAS 11 FT. 
.MON NIGHT...SE WIND 40 KT. SEAS 16 FT. 
.TUE...S WIND 35 KT. SEAS 25 FT. 
.WED...S WIND 30 KT. SEAS 21 FT. 
.THU...W WIND 30 KT. SEAS 13 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
430 PM AKST FRI FEB 4 2011

.ANALYSIS AND UPPER LEVELS...
HIGH PRESSURE HAS ARRIVED OVER MOST OF THE STATE TODAY. THE REMNANTS
OF THE LOW PRESSURE SYSTEM THAT WAS RESPONSIBLE FOR THIS WEEKS SNOW
IS DRIFTING EAST ACROSS THE SOUTHERN GULF. HIGH PRESSURE IS CENTERED
OVER SOUTHWEST ALASKA AND WILL CONTINUE TO PUSH EAST TOWARD
SOUTHCENTRAL OVERNIGHT. A LARGE VERTICALLY STACKED LOW IS IN ITS
MATURE PHASE SOUTH OF THE CENTRAL ALEUTIANS. THIS LOW AND THE
ASSOCIATED GALE FORCE FRONTAL BOUNDARY WILL SLOWLY WEAKEN AS IT
DRIFTS NORTH INTO THE CENTRAL BERING SEA.

.MODEL DISCUSSION...MODELS INITIALIZING WELL ON THE FEW FEATURES
ACROSS OUR DOMAIN THIS AFTERNOON. THE DEVELOPING SYSTEM OVER THE
NORTH PACIFIC CONTINUES TO GIVE THE MODELS FITS...AS RUN TO RUN
CONSISTENCY IS VERY POOR. THE TREND HAS BEEN FOR THE FRONTAL BOUNDARY
TO APPROACH FASTER WITH EACH RUN AS WELL AS AN OCCLUDED LOW
DEVELOPING ALONG THE BOUNDARY OVER THE SOUTHERN GULF. THE AFTERNOON
FORECAST PACKAGE WILL REFLECT MINOR CHANGES TO THE MAINLAND...BUT
WILL ADJUST THE COASTAL AND OFFSHORE FORECASTS TOWARD THE 12Z GFS
WHICH DEPICTS THESE TRENDS NICELY.

.SHORT TERM FORECAST...
.SOUTHCENTRAL...HIGH PRESSURE IS BUILDING OVER THE REGION THIS
AFTERNOON. THE VERY PLEASANT WEATHER ACROSS THE AREA WILL CONTINUE
THROUGH SATURDAY ALTHOUGH THE RECENT SNOWFALL AND CALM SURFACE WINDS
COULD LEAD TO SOME PATCHY DENSE FOG DEVELOPING OVERNIGHT. THE SURFACE
HIGH PRESSURE SHIFTS OVER TO THE ALCAN BORDER WHERE IT WILL REMAIN
THROUGH THE REST OF THE WEEKEND. THIS FEATURE WILL PREVENT THE
APPROACHING FRONTAL BOUNDARY FROM IMPACTING THE GULF COAST. IT WON'T
BE UNTIL EARLY NEXT WEEK THAT THE NEXT FRONTAL BOUNDARY MAKES MORE
PROGRESS AND PUSHES MOISTURE BACK OVER SOUTHCENTRAL.

.SOUTHWEST ALASKA...WIDESPREAD STRATUS AND FOG HAS DEVELOPED UNDER
THE RIDGE AXIS ACROSS SOUTHWEST ALASKA. CONDITIONS SHOULD IMPROVE
OVERNIGHT AS HIGH PRESSURE SHIFTS TOWARD SOUTHCENTRAL AND OFFSHORE
GRADIENT INCREASES. MOISTURE ASSOCIATED WITH THE FRONT STALLS ACROSS
THE ALASKA PENINSULA WITH GUSTY WINDS THROUGH CHANNELED TERRAIN AND
ALONG THE WESTERN CAPES EXPECTED THROUGH THE WEEKEND. BY SUNDAY
NIGHT...A SHORTWAVE PUSHES INLAND BRINGING LIGHT SNOW ACROSS THE
REGION. THEN A MUCH STRONGER SYSTEM APPROACHES SOUTHWEST ALASKA
MONDAY NIGHT INTO TUESDAY.

.BERING SEA AND ALEUTIANS...A LARGE AREA OF LOW PRESSURE WILL SLOWLY
CROSS THE CENTRAL ALEUTIANS AND WEAKEN AS IT MOVES INTO THE CENTRAL
BERING SEA. WIDESPREAD SHOWERS AND GALE FORCE WINDS WILL DIMINISH BY
THE END OF THE WEEKEND AS WEAK HIGH PRESSURE BUILDS BEFORE THE NEXT
SYSTEM APPROACHES FROM THE SOUTH EARLY NEXT WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALE WARNING...132 150 155 160 165 170 171 172 175 176
FIRE WEATHER...NONE.

AB FEB 11