Gale Warning 423, NWS Anchorage, AK

617 
FZAK61 PAFC 212349
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT FRI JUN 21 2013

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.

PKZ399-221500-
400 PM AKDT FRI JUN 21 2013
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
HIGH PRESSURE WILL PERSIST OVER THE GULF THROUGH FRI NIGHT AND THEN
WILL SHIFT EASTWARD ON SAT AS A FRONT MOVES INTO THE WESTERN GULF.
THIS FRONT WILL THEN BECOME NEARLY STATIONARY THROUGH SUN.

$$

PKZ351-221500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKDT FRI JUN 21 2013

.TONIGHT...SW WIND 15 KT. SEAS 6 FT. PATCHY FOG. 
.SAT...SE WIND 20 KT. SEAS 5 FT. PATCHY FOG. 
.SAT NIGHT...SE WIND 25 KT. SEAS 6 FT. PATCHY FOG. 
.SUN AND SUN NIGHT...E WIND 20 KT. SEAS 7 FT. 
.MON...NE WIND 15 KT. SEAS 7 FT. 
.TUE...NW WIND 15 KT. SEAS 5 FT. 
.WED...S WIND 15 KT. SEAS 4 FT.  

$$

PKZ352-221500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 PM AKDT FRI JUN 21 2013

...GALE WARNING SATURDAY...

.TONIGHT...SE WIND 15 KT INCREASING TO 25 KT AFTER MIDNIGHT. SEAS 5
FT. PATCHY FOG. 
.SAT...SE WIND 25 TO 35 KT. SEAS 7 FT. PATCHY FOG. 
.SAT NIGHT...SE WIND 20 TO 30 KT. SEAS 9 FT. PATCHY FOG. RAIN.
.SUN...E WIND 25 KT. SEAS 9 FT. 
.SUN NIGHT...E WIND 20 KT. SEAS 9 FT. 
.MON...NE WIND 20 KT. SEAS 9 FT. 
.TUE...N WIND 15 KT. SEAS 6 FT. 
.WED...SW WIND 15 KT. SEAS 4 FT.  

$$

JM

963 
FZAK61 PAFC 221145
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SAT JUN 22 2013

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.

PKZ399-230300-
400 AM AKDT SAT JUN 22 2013
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
HIGH PRESSURE OVER THE GULF WILL SHIFT EASTWARD THIS AFTERNOON AS A
FRONT MOVES INTO THE WESTERN GULF. THIS FRONT WILL THEN BECOME NEARLY
STATIONARY THROUGH SUN.

$$

PKZ351-230300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 AM AKDT SAT JUN 22 2013

.TODAY...SE WIND 20 KT. SEAS 6 FT. PATCHY FOG. 
.TONIGHT...SE WIND 15 TO 25 KT. SEAS 6 TO 9 FT. PATCHY FOG. 
.SUN...E WIND 20 KT. SEAS 7 FT. PATCHY FOG. 
.SUN NIGHT...E WIND 20 KT. SEAS 7 FT. 
.MON...NE WIND 15 KT. SEAS 7 FT. 
.TUE...VARIABLE WIND 10 KT. SEAS 5 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 3 FT.  

$$

PKZ352-230300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 AM AKDT SAT JUN 22 2013

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE WIND 20 TO 35 KT...STRONGEST W OF 148W. SEAS 7 TO 11
FT...HIGHEST W OF 148W. RAIN AND PATCHY FOG. 
.TONIGHT...SE WIND 20 TO 35 KT...STRONGEST W OF 148W. SEAS 7 TO 13
FT...HIGHEST W OF 148W. PATCHY FOG. RAIN.
.SUN...SE WIND 25 KT. SEAS 9 FT. PATCHY FOG. 
.SUN NIGHT...E WIND 20 KT. SEAS 9 FT. 
.MON...NE WIND 15 KT. SEAS 9 FT. 
.TUE...VARIABLE WIND 10 KT. SEAS 6 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 4 FT.  

$$

354 
FZAK61 PAFC 222334
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT SAT JUN 22 2013

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.

PKZ399-231500-
400 PM AKDT SAT JUN 22 2013
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A FRONT WILL REMAIN OVER THE WESTERN GULF OF ALASKA THROUGH SUN
NIGHT. THIS FRONT WILL THEN MOVE SOUTH AND DISSIPATE ON MON. 
$$

PKZ351-231500-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W
400 PM AKDT SAT JUN 22 2013

.TONIGHT...SE WIND 15 TO 25 KT. SEAS 6 FT. PATCHY FOG. 
.SUN...E WIND 25 KT. SEAS 7 FT. PATCHY FOG. 
.SUN NIGHT...E WIND 20 KT. SEAS 7 FT. 
.MON...NE WIND 15 KT. SEAS 7 FT. 
.MON NIGHT...VARIABLE WIND 10 KT. SEAS 6 FT. 
.TUE...NW WIND 15 KT. SEAS 5 FT. 
.WED AND THU...VARIABLE WIND 10 KT. SEAS 3 FT. 

$$

PKZ352-231500-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W
400 PM AKDT SAT JUN 22 2013

.TONIGHT...SE WIND 20 TO 30 KT. SEAS 9 FT. PATCHY FOG. RAIN.
.SUN...SE WIND 25 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.SUN NIGHT...E WIND 25 KT. SEAS 11 FT. 
.MON AND MON NIGHT...NE WIND 15 KT. SEAS 9 FT. 
.TUE...N WIND 15 KT. SEAS 6 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 4 FT. 
.THU...E WIND 15 KT. SEAS 4 FT.  

$$

JM

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT THU JUN 20 2013

.ANALYSIS AND UPPER LEVELS...THE UPPER LEVEL PATTERN HAS BECOME A
LITTLE MORE COMPLEX TODAY AS THE RIDGE HAS RECEDED INTO WESTERN
CANADA AND AN UPPER LEVEL LOW IS DIGGING JUST EAST OF THE KAMCHATKA
PENINSULA. IN BETWEEN THESE FEATURES THERE IS A HIGH AMPLITUDE RIDGE
AND THEN A WEAKENING UPPER LEVEL LOW OVER THE SOUTHWEST ALASKA COAST.
A STRONG JET STREAM IS RUNNING JUST SOUTH OF THE KAMCHATKA LOW AND IS
PERFECTLY POSITIONED TO FURTHER INTENSIFY AN EXTRA TROPICAL SURFACE
LOW THAT IS APPROACHING THE ALEUTIAN ISLANDS. THIS LOW WILL REACH THE
LOWER 960S MB RANGE AND WOULD BE CONSIDERED A STRONG LOW EVEN IN THE
WINTER.
A WEAKENING FRONT IS OVER SOUTHWEST ALASKA AND THE ALASKA PENINSULA
WHICH HAS ALSO TURNED THE FLOW SOUTHEAST OVER MOST OF THE MAINLAND
FORECAST AREA. THE SURFACE RIDGE IN THE GULF WILL REMAIN FOR THE NEXT
FEW DAYS AS WELL.

.MODEL DISCUSSION...THE MODELS ARE SETTLING DOWN AND SEEM TO HAVE
COME TOGETHER NICELY ON THE TRACK OF THE EXTRA TROPICAL LOW IN THE
ALEUTIANS. ONE TREND THEY ALL HAVE SHOWN OVER THE PAST DAY IS THAT
THE LOW WILL BE STRONGER AND FARTHER NORTH THAN THEY HAD BEEN
DEPICTING. THIS CHANGE MAKE A LOT OF SENSE DUE TO THE LOWS ORIGIN AND
THE EXTRA CHALLENGES THE MODELS ENCOUNTER WITH THESE SYSTEMS. THIS
WILL IMPACT THE FORECASTS IN THAT IT WILL SHIFT THE PRECIPITATION IN
THE ALEUTIANS AND BERING SEA FARTHER NORTH...BRINGING IN STORM FORCE
WINDS INTO THE WESTERN ALEUTIAN MARINE ZONES WHICH IS NOT VERY COMMON
IN JUNE.

.SHORT TERM FORECAST...CONVECTION STRONG ENOUGH TO PRODUCE
THUNDERSTORMS WILL BE LIMITED TO THE ALASKA RANGE IN THE NORTHERN
COPPER RIVER BASIN THE NEXT FEW DAYS. THERE ARE SOME SHOWERS THAT
WILL LINGER MAINLY OVER THE MOUNTAINS IN SOUTHWEST ALASKA UNTIL THE
WEATHER FRONT ASSOCIATED WITH THE ALEUTIAN STORM MOVES TO THE
SOUTHWEST ALASKA COAST FRIDAY NIGHT AN INCREASES THE WINDS AS WELL AS
THE CHANCES OF RAIN.
WIDESPREAD FOG WILL PERSIST IN THE GULF OF ALASKA REGION AS THE
SOUTHEAST GRADIENT KEEP CONDITIONS FAVORABLE FOR LOW CLOUDS AND FOG.

.LONG TERM FORECAST...THE EXTRA TROPICAL LOW WILL BE SHUNTED SOUTH OF
THE GULF OF ALASKA BY THE HIGH PRESSURE OVER THE STATE THIS WEEKEND.
THE FRONT ASSOCIATED WITH THIS LOW WILL RAPIDLY WEAKEN WHEN IT PUSHES
INTO THE HIGH PRESSURE AS IT MOVES EASTWARD. THIS WILL BRING SOME
PRECIPITATION TO THE GULF COAST AND REGION THIS WEEKEND BUT WILL
LIKELY ONLY INCREASE CLOUD COVER IN THE REST OF SOUTHWEST AND SOUTH
CENTRAL ALASKA. THE UPPER LEVEL HIGH PRESSURE WILL BUILD BACK OVER
THE STATE EARLY NEXT WEEK BRINGING WARMER AND DRIER CONDITIONS THAN
THE WEEKEND...BUT NOWHERE AS WARM AS EARLIER THIS WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALE 155 160 165 170 172 175 179 180 185.
         STORM 176.
FIRE WEATHER...NONE.

JUN 13