Gale Warning 245, NWS Anchorage, AK

891 
FZAK62 PAFC 292310
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT FRI MAR 29 2013

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.

PKZ499-301500-
400 PM AKDT FRI MAR 29 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 1001 MB LOW NEAR 53N 163W WILL MOVE TO 56N 155W AT 1020 MB LATE SAT
NIGHT. A 1003 MB LOW NEAR 49N 178E SAT AFTERNOON WILL MOVE TO 56N
178W SUN AFTERNOON AT 996 MB.
$$

PKZ411-301500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT FRI MAR 29 2013

...GALE WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...SE WIND 35 TO 45 KT. SEAS 14 FT. SNOW AND RAIN. FREEZING
SPRAY MAINLY IN THE EVENING N OF 56N.
.SAT...S WIND 35 TO 45 KT. WEST OF 178E...WINDS BECOMING SW 15 TO 25
KT IN THE AFTERNOON. SEAS 17 FT. RAIN AND SNOW. 
.SAT NIGHT...W WIND 20 KT. EAST OF 178E...S WIND 40 KT IN THE
EVENING. SEAS 14 FT. SNOW AND RAIN. 
.SUN...NW WIND 30 KT. SEAS 10 FT. 
.SUN NIGHT...NW WIND 35 KT. SEAS 13 FT. 
.MON...NW WIND 35 KT. SEAS 12 FT. 
.TUE...N WIND 25 KT. SEAS 9 FT. 
.WED...NE WIND 25 KT. SEAS 13 FT.  
$$

PKZ412-301500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT FRI MAR 29 2013

...GALE WARNING SATURDAY AND SATURDAY NIGHT...

.TONIGHT...N WIND 15 TO 25 KT DIMINISHING TO VARIABLE 10 KT. WEST OF
175W...N WIND 20 KT BECOMING SE 15 TO 25 KT AFTER MIDNIGHT. SEAS 5
FT. FREEZING SPRAY. 
.SAT...SE WIND 20 TO 30 KT INCREASING TO 30 TO 40 KT IN THE
AFTERNOON. SEAS 10 FT. PATCHY FOG. FREEZING SPRAY. 
.SAT NIGHT...SE WIND 30 TO 40 KT. SEAS 14 FT. PATCHY FOG. SNOW AND
RAIN. 
.SUN...SE WIND 40 KT. SEAS 14 FT. 
.SUN NIGHT...SE WIND 40 KT. SEAS 15 FT. 
.MON...W WIND 30 KT. SEAS 14 FT. 
.TUE...NE WIND 25 KT. SEAS 7 FT. 
.WED...E WIND 25 KT. SEAS 12 FT.  
$$

PKZ413-301500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT FRI MAR 29 2013

...GALE WARNING SATURDAY AND SATURDAY NIGHT...

.TONIGHT...NW WIND 15 TO 25 KT BECOMING VARIABLE 10 KT AFTER
MIDNIGHT. W OF 175W...N WIND 20 KT BECOMING S 20 TO 30 KT AFTER
MIDNIGHT. SEAS 8 FT. FREEZING SPRAY. 
.SAT...S WIND 20 TO 30 KT INCREASING TO 30 TO 40 KT IN THE AFTERNOON.
SEAS 11 FT. RAIN AND SNOW. 
.SAT NIGHT...SE WIND 25 TO 35 KT. SEAS 13 FT. RAIN AND SNOW. 
.SUN...SE WIND 40 KT. SEAS 13 FT. 
.SUN NIGHT...W WIND 35 KT. SEAS 14 FT. 
.MON...NW WIND 25 KT. SEAS 13 FT. 
.TUE...NE WIND 30 KT. SEAS 9 FT. 
.WED...E WIND 25 KT. SEAS 15 FT.  
$$

PKZ414-301500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT FRI MAR 29 2013

.TONIGHT...N WIND 15 TO 25 KT. SEAS IN ICE FREE WATERS 6 FT. PATCHY
FOG. FREEZING SPRAY. 
.SAT...N WIND 15 KT BECOMING VARIABLE 10 KT IN THE AFTERNOON. SEAS IN
ICE FREE WATERS 4 FT. PATCHY FOG. 
.SAT NIGHT...SE WIND 20 KT. SEAS IN ICE FREE WATERS 4 FT. PATCHY
FOG. 
.SUN...SE WIND 30 KT. SEAS IN ICE FREE WATERS 7 FT. 
.SUN NIGHT...SE WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.MON...SE WIND 25 KT. SEAS IN ICE FREE WATERS 9 FT. 
.TUE AND WED...E WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
$$

413 
FZAK62 PAFC 300515 AAA
OFFALU

OFFSHORE WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE ANCHORAGE AK
915 PM AKDT FRI MAR 29 2013

UPDATED ZONE 412 413

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.

PKZ499-301500-
400 PM AKDT FRI MAR 29 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 1001 MB LOW NEAR 53N 163W WILL MOVE TO 56N 155W AT 1020 MB LATE SAT
NIGHT. A 1003 MB LOW NEAR 49N 178E SAT AFTERNOON WILL MOVE TO 56N
178W SUN AFTERNOON AT 996 MB.
$$

PKZ411-301500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT FRI MAR 29 2013

...GALE WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...SE WIND 35 TO 45 KT. SEAS 14 FT. SNOW AND RAIN. FREEZING
SPRAY MAINLY IN THE EVENING N OF 56N.
.SAT...S WIND 35 TO 45 KT. WEST OF 178E...WINDS BECOMING SW 15 TO 25
KT IN THE AFTERNOON. SEAS 17 FT. RAIN AND SNOW. 
.SAT NIGHT...W WIND 20 KT. EAST OF 178E...S WIND 40 KT IN THE
EVENING. SEAS 14 FT. SNOW AND RAIN. 
.SUN...NW WIND 30 KT. SEAS 10 FT. 
.SUN NIGHT...NW WIND 35 KT. SEAS 13 FT. 
.MON...NW WIND 35 KT. SEAS 12 FT. 
.TUE...N WIND 25 KT. SEAS 9 FT. 
.WED...NE WIND 25 KT. SEAS 13 FT.  
$$

PKZ412-301500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
915 PM AKDT FRI MAR 29 2013

...GALE WARNING SATURDAY AND SATURDAY NIGHT...

.TONIGHT...N WIND 15 TO 25 KT DIMINISHING TO VARIABLE 10 KT. WEST OF
175W...N WIND 20 KT BECOMING SE 15 TO 25 KT AFTER MIDNIGHT. SEAS 5
FT. FREEZING SPRAY IN THE EVENING. 
.SAT...SE WIND 20 TO 30 KT INCREASING TO 30 TO 40 KT IN THE
AFTERNOON. SEAS 10 FT. PATCHY FOG. FREEZING SPRAY. 
.SAT NIGHT...SE WIND 30 TO 40 KT. SEAS 14 FT. PATCHY FOG. SNOW AND
RAIN. 
.SUN...SE WIND 40 KT. SEAS 14 FT. 
.SUN NIGHT...SE WIND 40 KT. SEAS 15 FT. 
.MON...W WIND 30 KT. SEAS 14 FT. 
.TUE...NE WIND 25 KT. SEAS 7 FT. 
.WED...E WIND 25 KT. SEAS 12 FT.  
$$

PKZ413-301500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
915 PM AKDT FRI MAR 29 2013

...GALE WARNING SATURDAY AND SATURDAY NIGHT...

.TONIGHT...NW WIND 15 TO 25 KT BECOMING VARIABLE 10 KT AFTER
MIDNIGHT. W OF 175W...N WIND 20 KT BECOMING S 20 TO 30 KT AFTER
MIDNIGHT. SEAS 8 FT. FREEZING SPRAY IN THE EVENING. 
.SAT...S WIND 20 TO 30 KT INCREASING TO 30 TO 40 KT IN THE AFTERNOON.
SEAS 11 FT. RAIN AND SNOW. 
.SAT NIGHT...SE WIND 25 TO 35 KT. SEAS 13 FT. RAIN AND SNOW. 
.SUN...SE WIND 40 KT. SEAS 13 FT. 
.SUN NIGHT...W WIND 35 KT. SEAS 14 FT. 
.MON...NW WIND 25 KT. SEAS 13 FT. 
.TUE...NE WIND 30 KT. SEAS 9 FT. 
.WED...E WIND 25 KT. SEAS 15 FT.  
$$

PKZ414-301500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT FRI MAR 29 2013

.TONIGHT...N WIND 15 TO 25 KT. SEAS IN ICE FREE WATERS 6 FT. PATCHY
FOG. FREEZING SPRAY. 
.SAT...N WIND 15 KT BECOMING VARIABLE 10 KT IN THE AFTERNOON. SEAS IN
ICE FREE WATERS 4 FT. PATCHY FOG. 
.SAT NIGHT...SE WIND 20 KT. SEAS IN ICE FREE WATERS 4 FT. PATCHY
FOG. 
.SUN...SE WIND 30 KT. SEAS IN ICE FREE WATERS 7 FT. 
.SUN NIGHT...SE WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.MON...SE WIND 25 KT. SEAS IN ICE FREE WATERS 9 FT. 
.TUE AND WED...E WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
$$

490 
FZAK62 PAFC 301146
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SAT MAR 30 2013

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.

PKZ499-310300-
400 AM AKDT SAT MAR 30 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 1011 MB LOW NEAR 54N 159W WILL MOVE TO 55N 156W AT 1020 MB LATE
TONIGHT AND DISSIPATE. A 999 MB LOW NEAR 54N 179E LATE TONIGHT WILL
MOVE TO 59N 177W LATE SUN NIGHT AT 997 MB.

$$

PKZ411-310300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT SAT MAR 30 2013

...GALE WARNING THROUGH TONIGHT...

.TODAY...S WIND 35 TO 45 KT. SEAS 14 TO 19 FT. RAIN AND SNOW. 
.TONIGHT...SW WIND 30 TO 40 KT BECOMING W 25 KT AFTER MIDNIGHT. SEAS
14 TO 18 FT. RAIN AND SNOW. 
.SUN...NW WIND 30 KT. SEAS 11 TO 14 FT. FREEZING SPRAY. 
.SUN NIGHT...NW WIND 35 KT. SEAS 14 FT. 
.MON...W WIND 35 KT. SEAS 13 FT. 
.TUE...NE WIND 30 KT. SEAS 15 FT. 
.WED...NE WIND 25 KT. SEAS 13 FT.  

$$

PKZ412-310300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT SAT MAR 30 2013

...GALE WARNING THROUGH SUNDAY...

.TODAY...SE WIND 20 TO 30 KT INCREASING TO SE WIND 30 TO 40 KT IN THE
AFTERNOON. SEAS IN ICE FREE WATERS 10 TO 14 FT. PATCHY FOG. SNOW.
FREEZING SPRAY. 
.TONIGHT...SE WIND 30 TO 40 KT. SEAS IN ICE FREE WATERS 10 TO 15 FT.
PATCHY FOG. SNOW AND RAIN. 
.SUN...SE WIND 30 TO 40 KT. SEAS IN ICE FREE WATERS 10 TO 15 FT. SNOW
AND RAIN. 
.SUN NIGHT...SE WIND 35 KT. SEAS IN ICE FREE WATERS 15 FT. 
.MON...W WIND 30 KT. SEAS IN ICE FREE WATERS 14 FT. 
.TUE...NE WIND 30 KT. SEAS IN ICE FREE WATERS 10 FT. 
.WED...E WIND 25 KT. SEAS IN ICE FREE WATERS 11 FT.  

$$

PKZ413-310300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT SAT MAR 30 2013

...GALE WARNING THROUGH SUNDAY...

.TODAY...S WIND 20 TO 30 KT INCREASING TO 30 TO 40 KT IN THE
AFTERNOON. SEAS 11 TO 14 FT. SNOW. 
.TONIGHT...S WIND 25 TO 35 KT. SEAS 11 TO 15 FT. SNOW. 
.SUN...S WIND 30 TO 40 KT. SEAS 12 TO 16 FT. SNOW. 
.SUN NIGHT...W WIND 35 KT. SEAS 14 FT. 
.MON...NW WIND 25 KT. SEAS 13 FT. 
.TUE...NE WIND 35 KT. SEAS 16 FT. 
.WED...E WIND 25 KT. SEAS 12 FT.  

$$

PKZ414-310300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT SAT MAR 30 2013

.TODAY...N WIND 20 KT. SEAS IN ICE FREE WATERS 4 FT. PATCHY FOG. 
.TONIGHT...SE WIND 25 KT. SEAS IN ICE FREE WATERS 4 FT. PATCHY FOG. 
.SUN...SE WIND 30 KT. SEAS IN ICE FREE WATERS 8 FT. PATCHY FOG. 
.SUN NIGHT...SE WIND 35 KT. SEAS IN ICE FREE WATERS 11 FT. 
.MON...E WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.TUE...E WIND 35 KT. SEAS IN ICE FREE WATERS 10 FT. 
.WED...E WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT.  

$$

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
500 PM AKDT THU MAR 28 2013

.MODEL DISCUSSION...
MODELS HAVE ALL INITIALIZED FAIRLY WELL AND ARE IN GOOD AGREEMENT
THROUGH THE SHORT TERM. THERE ARE SOME POSITIONAL DIFFERENCES WITH
THE WEAK LOW IN THE GULF OF ALASKA FRIDAY THROUGH SATURDAY HOWEVER.
THE NAM IS THE PREFERRED MODEL AS IT BRINGS THE LOW INTO THE NORTHERN
GULF. FOR THE BERING SEA AND SOUTHWEST MAINLAND...THE GFS IS THE
PREFERRED MODEL OVERALL.

.ANALYSIS AND UPPER LEVELS...
TWO UPPER LOWS...ONE OVER FAR EASTERN RUSSIA AND ONE NEAR THE CENTRAL
ALEUTIANS...ARE BEING SEPARATED BY UPPER RIDGING PUSHING IN FROM THE
SOUTHWEST. ANOTHER UPPER LOW IS OVER NORTHEAST ALASKA AND NORTHWEST
CANADA...WHILE RIDGING IS IN PLACE OVER MUCH OF THE INTERIOR AND
SOUTH CENTRAL MAINLAND. AT THE SURFACE...A LARGE LOW CENTERED OVER
THE CENTRAL ALEUTIANS IS MOVING EASTWARD WITH A WARM FRONT MAKING ITS
WAY EASTWARD TOWARD THE GULF OF ALASKA. HIGH PRESSURE IS OVER THE
EASTERN GULF. SNOW CONTINUES OVER MUCH OF THE SOUTHWEST MAINLAND
TODAY AHEAD OF THE FRONT AS IT MOVES INLAND...AND SOME LIGHT
PRECIPITATION IS FALLING OVER THE GULF OF ALASKA AND GRADUALLY MOVING
TOWARD THE COASTAL COMMUNITIES.

.SHORT TERM FORECAST...
THE LOW AND ITS ASSOCIATED WARM FRONT WILL SLOWLY MOVE EASTWARD
THROUGH SATURDAY...WITH THE LOW CENTER REACHING THE KODIAK ISLAND
AREA BY SUNDAY MORNING. THE FRONT WILL SURGE EASTWARD AHEAD OF THE
LOW...SWINGING TOWARD THE GULF COAST TONIGHT AND FRIDAY. THIS FRONT
WILL NOT CONTINUE TO TRAVEL INLAND ALONG THE GULF COAST...THEREFORE
WHILE THOMPSON PASS WILL GET SOME SNOW AND SOME WIND...BLIZZARD
CONDITIONS ARE NOT EXPECTED. THE BEST CHANCE FOR SNOWFALL FOR THE
WESTERN KENAI PENINSULA...ANCHORAGE BOWL AND OTHER AREAS ON THE LEE
SIDE OF MOUNTAINS WILL BE AS THE FRONT MOVES THROUGH...WITH ANY
ACCUMULATION BEING LIGHT. THE HEAVIEST SNOWFALL WOULD BE ALONG THE
NORTH GULF COAST (WHERE PRECIPITATION TYPE IS SNOW).

SOUTHWEST MAINLAND AND BERING SEA/ALEUTIAN ISLANDS...
SNOW WILL GRADUALLY END TONIGHT ACROSS THE SOUTHWEST MAINLAND...WITH
THE EXCEPTION OF LOCATIONS EAST OF SLEETMUTE AND KING SALMON WHERE
SNOW WILL LINGER. THE LOW WILL CONTINUE EASTWARD AND BRING SHOWERS TO
THE ALEUTIANS AND ALASKA PENINSULA THROUGH THE WEEKEND.

.LONG TERM FORECAST...
SUNDAY AND BEYOND...THE REMNANTS OF THE LONGWAVE TROUGH WILL STILL BE
HANGING OVER SOUTHCENTRAL ALASKA...WITH AREAS OF SCATTERED SNOW
SHOWERS...MIXING WITH RAIN ALONG COASTAL AREAS. ONCE AGAIN...THE
GLOBAL MODELS ARE HAVING A DIFFICULT TIME HANDLING THE AMPLIFIED WAVE
PATTERN...WITH THE MAIN DISCREPANCIES REVOLVING AROUND THE POTENTIAL
FOR NUMEROUS CUTOFF LOWS AS THE EASTERN PACIFIC RIDGE BEGINS TO EXERT
A STRONGER INFLUENCE OVER MAINLAND ALASKA AND THE EASTERN BERING SEA.
RIGHT NOW...THERE IS HIGH CONFIDENCE THE UPPER LOW EXITS SOUTHERN
ALASKA BY LATE MONDAY...WITH HIGH PRESSURE LIKELY HOLDING STRONG OVER
MUCH OF MAINLAND ALASKA THROUGH MOST OF THE WEEK. ANY FRONTS WILL BE
WEAK AND LOW IMPACT...WITH THE MAIN STORM TRACK STAYING ACROSS THE
WESTERN BERING AND NORTH PACIFIC. TEMPERATURES WILL BE A BIGGER
CHALLENGE AS THE EXACT PLACEMENT OF THE BLOCK WILL DETERMINE WHETHER
OR NOT SOUTHERN ALASKA IS INFLUENCED BY NORTHERLY OFFSHORE FLOW AND
RETROGRADING EASTERLY WAVES...OR BY STABLE UPPER LEVEL HIGH PRESSURE.
HOWEVER...NO MAJOR COLD AIR ARCTIC OUTBREAKS SEEM EMINENT AT THIS
TIME AS THE MAIN COLD CENTERS DEVELOP OVER THE LOWER 48/CANADA AND
EASTERN ASIA.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...GALE 120 125 129 130 172 175 176.
         HEAVY FREEZING SPRAY 179.
FIRE WEATHER...NONE.