Gale Warning 311, NWS Anchorage, AK

593 
FZAK62 PAFC 082335
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT FRI APR 8 2011

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.

PKZ499-091500-
400 PM AKDT FRI APR 8 2011
.SYNOPSIS FOR CENTRAL BERING SEA...
A 982 MB LOW NEAR 59N 163W WILL MERGE WITH A LOW IN THE NORTHWEST
GULF OVERNIGHT. A 990 MB LOW NEAR 55N 164E WILL MOVE TO 56N 172E 
AT 993 MB SAT AFTERNOON AND THEN MOVE TO 55N 167W AT 1005 MB SUN
AFTERNOON.
$$

PKZ411-091500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT FRI APR 8 2011

...GALE WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...S WIND 20 KT INCREASING TO 35 KT AFTER MIDNIGHT.
SEAS 12 FT. RAIN AND SNOW. 
.SAT...S OF 56N...SW WIND 35 KT. N OF 56N...SW WINDS 20 KT. 
SEAS 18 FT. SNOW.
.SAT NIGHT...S OF 56N...W WIND 35 KT. N OF 56N...NE WINDS 25 KT. 
SEAS 20 FT. 
.SUN...N WIND 25 KT. SEAS 14 FT. 
.SUN NIGHT...N WIND 15 KT. SEAS 10 FT. 
.MON...S WIND 25 KT. SEAS 9 FT. 
.TUE...SW WIND 20 KT. SEAS 8 FT. 
.WED...SW WIND 20 KT. SEAS 6 FT.  

$$

PKZ412-091500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT FRI APR 8 2011

...GALE WARNING TONIGHT...

.TONIGHT...NW WIND 40 KT DIMINISHING TO 25 KT AFTER MIDNIGHT. 
SEAS 20 FT SUBSIDING TO 13 FT AFTER MIDNIGHT. SNOW. FREEZING SPRAY. 
.SAT...SE WIND 30 KT. SEAS 10 FT. SNOW AND RAIN. 
.SAT NIGHT...SW WIND 25 KT. SEAS 12 FT. FREEZING SPRAY. 
.SUN...N WIND 25 KT. SEAS 13 FT. 
.SUN NIGHT...N WIND 20 KT. SEAS 11 FT. 
.MON...NW WIND 15 KT. SEAS 8 FT. 
.TUE...W WIND 15 KT. SEAS 5 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 5 FT.  

$$

PKZ413-091500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT FRI APR 8 2011

...GALE WARNING THROUGH SATURDAY...

.TONIGHT...NW WIND 40 KT DIMINISHING TO 25 KT AFTER MIDNIGHT. 
SEAS 24 FT. 
.SAT...SW WIND 35 KT. SEAS 14 FT. SNOW AND RAIN. 
.SAT NIGHT...SW WIND 30 KT. SEAS 16 FT. 
.SUN...W WIND 30 KT. SEAS 18 FT. 
.SUN NIGHT...NW WIND 25 KT. SEAS 14 FT. 
.MON...NW WIND 15 KT. SEAS 10 FT. 
.TUE...W WIND 20 KT. SEAS 6 FT. 
.WED...W WIND 15 KT. SEAS 5 FT.  

$$

PKZ414-091500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT FRI APR 8 2011

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY...

.TONIGHT...NW WIND 35 TO 45 KT. SEAS IN ICE FREE WATERS 25 FT. 
HEAVY FREEZING SPRAY. 
.SAT...NW WIND 30 KT BECOMING S 15 TO 25 IN THE AFTERNOON. 
SEAS IN ICE FREE WATERS 17 FT SUBSIDING TO 12 FT IN THE AFTERNOON.
HEAVY FREEZING SPRAY IN THE MORNING.
.SAT NIGHT...SW WIND 30 KT. SEAS IN ICE FREE WATERS 11 FT. 
.SUN...NW WIND 20 KT. SEAS IN ICE FREE WATERS 11 FT. 
.SUN NIGHT...N WIND 25 KT. SEAS IN ICE FREE WATERS 13 FT. 
.MON...NW WIND 25 KT. SEAS IN ICE FREE WATERS 10 FT. 
.TUE AND WED...NW WIND 20 KT. SEAS IN ICE FREE WATERS 7 FT. 

$$

730 
FZAK62 PAFC 091144
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SAT APR 9 2011

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.

PKZ499-100300-
400 AM AKDT SAT APR 9 2011
.SYNOPSIS FOR CENTRAL BERING SEA...

A 987 MB LOW NEAR 57N 167E WILL WEAKEN TO 1004 MB NEAR 56N 178W LATE
SAT NIGHT. THIS BROAD AREA OF LOW PRESSURE WILL THEN MOVE INTO THE
WESTERN GULF BY SUN EVENING. HIGH PRESSURE WILL BUILD INTO THE
WESTERN BERING ON SUN.

$$

PKZ411-100300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT SAT APR 9 2011

.TODAY...SW WIND 20 TO 30 KT. SEAS 10 TO 16 FT. SNOW.
.TONIGHT...W WIND 20 TO 30 KT. SEAS 12 TO 16 FT. 
.SUN...NW WIND 30 KT DIMINISHING TO 20 KT IN THE AFTERNOON. SEAS 13
FT. 
.SUN NIGHT...NW WIND 20 KT. SEAS 11 FT. 
.MON...S WIND 25 KT. SEAS 8 FT. 
.TUE THROUGH WED...S WIND 20 KT. SEAS 7 FT. 

$$

PKZ412-100300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT SAT APR 9 2011

...HEAVY FREEZING SPRAY WARNING SUNDAY...

.TODAY...E TO S WIND 20 TO 30 KT. SEAS 11 FT. SNOW AND RAIN. FREEZING
SPRAY IN THE MORNING.
.TONIGHT...S TO SW WIND 25 KT BECOMING VARIABLE 15 KT AFTER 
MIDNIGHT. SEAS 11 FT.
.SUN...N WIND 20 KT. SEAS 12 FT. HEAVY FREEZING SPRAY.
.SUN NIGHT...N WIND 25 KT. SEAS 12 FT. 
.MON...W WIND 20 KT. SEAS 8 FT. 
.TUE...NW WIND 20 KT. SEAS 6 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 5 FT.  

$$

PKZ413-100300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT SAT APR 9 2011

.TODAY...SW WIND 20 TO 30 KT. SEAS 14 FT. SNOW AND RAIN. 
.TONIGHT...SW WIND 30 KT. SEAS 12 TO 16 FT. 
.SUN...W WIND 20 TO 30 KT BECOMING N IN THE AFTERNOON. SEAS 16 FT. 
.SUN NIGHT...N WIND 25 KT. SEAS 13 FT. 
.MON...W WIND 20 KT. SEAS 10 FT. 
.TUE...NW WIND 20 KT. SEAS 6 FT. 
.WED...W WIND 15 KT. SEAS 5 FT.  

$$

PKZ414-100300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT SAT APR 9 2011

...GALE WARNING TODAY...
...HEAVY FREEZING SPRAY WARNING TODAY AND SUNDAY...

.TODAY...W WIND 25 TO 35 KT BECOMING S 20 KT IN THE AFTERNOON. SEAS
IN ICE FREE WATERS 12 TO 16 FT. HEAVY FREEZING SPRAY IN THE MORNING. 
.TONIGHT...S WIND 30 KT BECOMING W 25 KT AFTER MIDNIGHT. SEAS IN ICE
FREE WATERS 10 FT. 
.SUN...NW WIND 25 KT. SEAS IN ICE FREE WATERS 10 FT. HEAVY FREEZING
SPRAY.
.SUN NIGHT...N WIND 25 KT. SEAS IN ICE FREE WATERS 12 FT. 
.MON...NW WIND 25 KT. SEAS IN ICE FREE WATERS 11 FT. 
.TUE...NW WIND 30 KT. SEAS IN ICE FREE WATERS 9 FT. 
.WED...N WIND 25 KT. SEAS IN ICE FREE WATERS 7 FT.  

$$

838 
FZAK62 PAFC 092313
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT SAT APR 9 2011

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.

PKZ499-101500-
400 PM AKDT SAT APR 9 2011
.SYNOPSIS FOR CENTRAL BERING SEA...
A 1001 MB LOW NEAR 57N 175W WILL MOVE TO 56N 157W SUN MORNING AND
THEN DISSIPATE. A 992 MB LOW NEAR 56N 171E WILL MOVE TO 54N 170W AT
1010 MB SUN AFTERNOON AND THEN DISSIPATE. HIGH PRESSURE WILL BUILD
INTO THE WESTERN BERING SEA SUN NIGHT.
$$

PKZ411-101500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT SAT APR 9 2011

...GALE WARNING TONIGHT...

.TONIGHT...S OF 55N...W WIND 35 KT. N OF 55N...VARIABLE WIND 20 KT
BECOMING N 25 KT AFTER MIDNIGHT. SEAS 18 FT. SNOW SHOWERS. 
.SUN...N WIND 30 KT DIMINISHING TO 20 KT IN THE AFTERNOON. SEAS 16
FT. FREEZING SPRAY N OF 55N IN THE MORNING.. 
.SUN NIGHT...N WIND 15 KT BECOMING SW 20 KT AFTER MIDNIGHT. SEAS 11
FT. 
.MON...S WIND 25 KT. SEAS 8 FT. 
.MON NIGHT THROUGH THU...S WIND 20 KT. SEAS 8 FT. 

$$

PKZ412-101500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT SAT APR 9 2011

...HEAVY FREEZING SPRAY WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...SW WIND 25 KT BECOMING N AFTER MIDNIGHT. SEAS 10 FT. SNOW.
FREEZING SPRAY AFTER MIDNIGHT. 
.SUN AND SUN NIGHT...N WIND 25 KT. SEAS 13 FT. HEAVY FREEZING SPRAY. 
.MON...NW WIND 25 KT. SEAS 9 FT. 
.MON NIGHT...W WIND 20 KT. SEAS 8 FT. 
.TUE...NW WIND 15 KT. SEAS 6 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 5 FT. 
.THU...NW WIND 15 KT. SEAS 4 FT. 

$$

PKZ413-101500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT SAT APR 9 2011

.TONIGHT...SW WIND 30 KT. SEAS 15 FT. 
.SUN...W WIND 30 KT BECOMING N IN THE AFTERNOON SEAS 16 FT. SNOW AND
RAIN SHOWERS. 
.SUN NIGHT...N WIND 30 KT. SEAS 14 FT. FREEZING SPRAY. 
.MON...W WIND 25 KT. SEAS 11 FT. 
.MON NIGHT...W WIND 20 KT. SEAS 7 FT. 
.TUE THROUGH THU...NW WIND 15 KT. SEAS 5 FT. 

$$

PKZ414-101500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT SAT APR 9 2011

...HEAVY FREEZING SPRAY WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...SW WIND 25 KT. SEAS IN ICE FREE WATERS 10 FT. SNOW
SHOWERS.
.SUN...NW WIND 25 KT. SEAS IN ICE FREE WATERS 10 FT. SNOW SHOWERS.
HEAVY FREEZING SPRAY. 
.SUN NIGHT...N WIND 30 KT. SEAS IN ICE FREE WATERS 13 FT. HEAVY
FREEZING SPRAY. 
.MON AND MON NIGHT...NW WIND 30 KT. SEAS IN ICE FREE WATERS 10 FT. 
.TUE...NW WIND 35 KT. SEAS IN ICE FREE WATERS 10 FT. 
.WED...N WIND 25 KT. SEAS IN ICE FREE WATERS 7 FT. 
.THU...N WIND 20 KT. SEAS IN ICE FREE WATERS 6 FT.  

$$

JAM APR 11

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKDT THU APR 7 2011

.ANALYSIS AND UPPER LEVELS...
A SINGLE MASSIVE STORM CONTINUES TO DOMINATE THE MAJORITY OF THE
STATE TODAY FROM THE BERING SEA TO EASTERN MAINLAND ALASKA. THE
VERTICALLY STACKED LOW BOTTOMED OUT SOMEWHERE AROUND 935 MB OVERNIGHT
IN THE NORTHERN BERING SEA...AND IS NOW SLOWLY WEAKENING AND SHOULD
MAKE LANDFALL NEAR HOOPER BAY EARLY FRI MORNING. THE STRONG FRONT
ASSOCIATED WITH THIS STORM CENTER BROUGHT DAMAGING WINDS TO THE
ALEUTIANS AND ALASKA PENINSULA YESTERDAY...AND WIDESPREAD BLIZZARD
CONDITIONS TO THE SOUTHWEST MAINLAND COAST. THE TRAILING END OF THE
FRONT MOVED INTO COOK INLET AND JUST EAST OF KODIAK ISLAND AROUND
NOON TODAY. A STRONG SOUTHERLY LOW LEVEL JET COMBINED WITH TIGHT
PRESSURE GRADIENTS AHEAD OF THE FRONT ARE PRODUCING VERY STRONG WINDS
ACROSS SOUTHCENTRAL ALASKA...ESPECIALLY THE ANCHORAGE BOWL AND ACROSS
TURNAGAIN ARM. ABUNDANT MOISTURE WITH THIS FRONT IS PRODUCING HEAVY
SNOW OVER THE SUSITNA VALLEY AND THE NORTH GULF COAST NEAR THOMPSON
PASS AND ALONG THE EASTERN KENAI PENINSULA.

.MODEL DISCUSSION...MODELS ARE IN GENERALLY GOOD AGREEMENT THROUGH
THE SHORT TERM.

.SHORT TERM FORECAST...
.SOUTHCENTRAL...THE STRONG WEATHER FRONT EXTENDING ACROSS THE WESTERN
SUSITNA VALLEY...TROUGH COOK INLET...TO JUST EAST OF KODIAK AT NOON
TODAY...MOVES INTO WESTERN CANADA/EASTERN GULF LATE THIS EVENING.
STRONG WINDS ACROSS SOUTHCENTRAL WILL DIMINISH WITH THE FRONTAL
PASSAGE. SAT IMAGERY SHOWS THE BACK EDGE OF THE PRECIPITATION OVER
SOUTHERN COOK INLET. SO SHOULD SEE HEAVY SNOWS TAPERING OFF OVER THE
SUSITNA VALLEY AND THE THOMPSON PASS THIS EVENING WITH FRONTAL
PASSAGE. ANOTHER SMALLER SCALE LOW CENTER SOUTH OF THE ALEUTIANS THIS
AFTERNOON MOVES TO THE KENAI PENINSULA FRI AFTERNOON AND BRINGS
ANOTHER SHOT OF SNOW AND RAIN.

.SOUTHWEST...THE BERING LOW WILL PROGRESSES NORTHEASTWARD TOWARDS THE
KUSKOKWIM DELTA TODAY. WARNING LEVEL WINDS SHOULD DIMINISH ACROSS
MUCH OF THE REGION BY MIDNIGHT TONIGHT. EXPECT SHOWERS WILL ALSO
CONTINUE ACROSS MUCH OF THE AREA INTO THE WEEKEND.

.ALEUTIANS/BERING SEA...
THE BERING SEA LOW CURRENTLY SOUTH OF SAINT MATTHEW ISLAND CONTINUES
TO IMPACT MUCH OF THE BERING SEA. WARNING LEVEL SOUTHWESTERLY WINDS
ON THE SOUTHERN FLACK HAVE DIMINISHED OVER THE PRIBILOF ISLANDS.
HOWEVER...EXPECT GALE FORCE AND STORM FORCE WINDS TO CONTINUE ACROSS
THE EASTERN/CENTRAL BERING BEHIND THIS LOW INTO SATURDAY. ANOTHER LOW
MOVES TO JUST EAST OF THE KAMCHATKA PENINSULA FRI AFTERNOON AND
CONTINUES TO THE CENTRAL BERING SEA SAT NIGHT. THE ASSOCIATED FRONTAL
SYSTEM MOVES TO THE WESTERN BERING SEA FRI EVENING..THEN ELONGATES SE
TO OVER BRISTOL BAY AND THE AK PEN AND WEAKENS SAT NIGHT.

.LONG TERM FORECAST...A PROGRESSIVE PATTERN WILL CONTINUE ACROSS THE
FORECAST REGION THROUGH THE NEXT WEEK.  AS A RESULT A SERIES OF LOWS
WILL MOVE FROM THE BERING SEA INTO THE GULF OF ALASKA.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...HIGH WIND WARNING 101 125 155 161
         WINTER STORM WARNING...145
         BLIZZARD WARNING...131
MARINE...STORM...160 180
         GALE...120 130 132 138 140 141 411 414 150 155 165 170 171
                172 175 179 185
         HEAVY FREEZING SPRAY...160 165 179 185
FIRE WEATHER...NONE

RMC APR 11