Gale Warning 385, NWS Anchorage, AK

799 
FZAK62 PAFC 180323 CCA
OFFALU

OFFSHORE WATERS FORECAST...CORRECTED
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT FRI MAY 17 2013

CORRECTED ZONE 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.

PKZ499-181500-
400 PM AKDT FRI MAY 17 2013
.SYNOPSIS FOR CENTRAL BERING SEA...

HIGH PRESSURE OVER THE CENTRAL BERING SEA WILL MOVE TO THE EASTERN
BERING SEA THROUGH SUN AFTERNOON. A 970 MB LOW NEAR 45N 167E SAT
AFTERNOON WILL WEAKEN TO 984 MB NEAR 47N 174E SUN AFTERNOON. A
WEATHER FRONT WILL MOVE INTO THE WESTERN ALEUTIANS SAT EVENING AND TO
THE CENTRAL ALEUTIANS BY SUN AFTERNOON.

$$

PKZ411-181500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT FRI MAY 17 2013

...GALE WARNING SATURDAY NIGHT...

.TONIGHT...SW WIND 15 KT. SEAS 4 FT. 
.SAT...S TO SE WIND 15 KT INCREASING TO 25 KT IN THE AFTERNOON. 
SEAS 5 FT. PATCHY FOG. 
.SAT NIGHT...SE WIND 25 TO 35 KT. SEAS 11 FT. PATCHY FOG. 
RAIN AND SNOW. 
.SUN...E WIND 35 KT. SEAS 12 FT. 
.SUN NIGHT...E WIND 25 KT. SEAS 12 FT. 
.MON...N WIND 25 KT. SEAS 11 FT. 
.TUE...NW WIND 20 KT. SEAS 9 FT. 
.WED...NW WIND 20 KT. SEAS 7 FT.  

$$

PKZ412-181500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT FRI MAY 17 2013

.TONIGHT...S TO SW WIND 15 KT. SEAS 3 FT. 
.SAT...S TO SW WIND 20 KT. SEAS 4 FT. 
.SAT NIGHT...S WIND 15 KT INCREASING TO 25 KT AFTER MIDNIGHT. 
SEAS 5 FT. PATCHY FOG. 
.SUN...SE WIND 35 KT. SEAS 11 FT. 
.SUN NIGHT...SE WIND 40 KT. SEAS 15 FT. 
.MON...SE WIND 35 KT. SEAS 14 FT. 
.TUE AND WED...W WIND 20 KT. SEAS 8 FT.

$$

PKZ413-181500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT FRI MAY 17 2013

...GALE WARNING SATURDAY NIGHT...

.TONIGHT...SW WIND 15 KT. SEAS 5 FT. 
.SAT...VARIABLE WIND 10 KT BECOMING S 20 KT IN THE AFTERNOON. 
SEAS 4 FT. 
.SAT NIGHT...SE WIND 25 KT IN THE EVENING INCREASING TO 35 KT. 
SEAS 10 FT. PATCHY FOG. RAIN.
.SUN AND SUN NIGHT...SE WIND 40 KT. SEAS 15 FT.
.MON...S WIND 35 KT. SEAS 14 FT. 
.TUE AND WED...W WIND 20 KT. SEAS 9 FT. 

$$

PKZ414-181500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT FRI MAY 17 2013

.TONIGHT...NW WIND 20 KT. SEAS 4 FT. FREEZING SPRAY N OF 56N. 
.SAT...S WIND 15 KT. SEAS 4 FT. 
.SAT NIGHT...S WIND 20 KT. SEAS 4 FT. FREEZING SPRAY N OF 57N. 
.SUN...S WIND 35 KT. SEAS 9 FT. 
.SUN NIGHT...SE WIND 40 KT. SEAS 13 FT. 
.MON...SE WIND 40 KT. SEAS 15 FT. 
.TUE...S WIND 25 KT. SEAS 10 FT. 
.WED...S WIND 20 KT. SEAS 7 FT.  

$$

994 
FZAK62 PAFC 181139
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SAT MAY 18 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.

PKZ499-190300-
400 AM AKDT SAT MAY 18 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
HIGH PRESSURE WILL REMAIN OVER THE EASTERN BERING SEA THROUGH SUN
AFTERNOON. A 970 MB LOW NEAR 46N 165E THIS AFTERNOON WILL WEAKEN TO
990 MB NEAR 48N 178E LATE SUN NIGHT. A WEATHER FRONT WILL MOVE INTO
THE WESTERN ALEUTIANS THIS AFTERNOON AND TO THE EASTERN ALEUTIANS BY
LATE SUN NIGHT.
$$

PKZ411-190300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT SAT MAY 18 2013

...GALE WARNING TONIGHT...

.TODAY...S WIND 15 KT INCREASING TO 25 KT IN THE AFTERNOON. SEAS
5 FT. PATCHY FOG. 
.TONIGHT...SE WIND 25 KT INCREASING TO 35 KT AFTER MIDNIGHT. SEAS 7
FT BUILDING TO 11 FT. PATCHY FOG. RAIN AND SNOW. 
.SUN...E WIND 30 KT. SEAS 12 FT. PATCHY FOG. RAIN AND SNOW. 
.SUN NIGHT...E WIND 20 KT. SEAS 12 FT. 
.MON...N WIND 25 KT. SEAS 11 FT. 
.TUE...NW WIND 25 KT. SEAS 9 FT. 
.WED...W WIND 20 KT. SEAS 7 FT.  

$$

PKZ412-190300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT SAT MAY 18 2013

...GALE WARNING SUNDAY...

.TODAY...SW WIND 20 KT. SEAS 5 FT. 
.TONIGHT...S WIND 15 KT INCREASING TO 25 KT AFTER MIDNIGHT. SEAS 5 FT
BUILDING TO 9 FT. PATCHY FOG. 
.SUN...SE WIND 35 KT. SEAS 11 FT. PATCHY FOG. RAIN AND SNOW. 
.SUN NIGHT...SE WIND 35 KT. SEAS 14 FT. 
.MON...SE WIND 30 KT. SEAS 14 FT. 
.TUE AND WED...W WIND 20 KT. SEAS 8 FT. 

$$

PKZ413-190300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT SAT MAY 18 2013

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...VARIABLE WIND 10 KT BECOMING S 20 KT IN THE AFTERNOON. SEAS
4 FT. 
.TONIGHT...SE WIND 25 KT INCREASING TO 35 KT TOWARDS MORNING. SEAS
9 FT. PATCHY FOG. RAIN.
.SUN...SE WIND 40 KT. SEAS 13 FT. AREAS OF FOG. RAIN AND SNOW. 
.SUN NIGHT...SE WIND 40 KT. SEAS 15 FT. 
.MON...SE WIND 30 KT. SEAS 14 FT. 
.TUE...W WIND 25 KT. SEAS 9 FT. 
.WED...SW WIND 20 KT. SEAS 8 FT.  

$$

PKZ414-190300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT SAT MAY 18 2013

.TODAY...S TO W WIND 15 KT. SEAS 4 FT. 
.TONIGHT...S WIND 20 KT. SEAS 4 FT. 
.SUN...SE WIND 30 KT. SEAS 9 FT. PATCHY FOG. 
.SUN NIGHT...SE WIND 35 KT. SEAS 12 FT. 
.MON...SE WIND 35 KT. SEAS 15 FT. 
.TUE...S WIND 30 KT. SEAS 10 FT. 
.WED...SW WIND 20 KT. SEAS 7 FT.  

$$

JM

473 
FZAK62 PAFC 182324
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT SAT MAY 18 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.

PKZ499-191500-
400 PM AKDT SAT MAY 18 2013
.SYNOPSIS FOR CENTRAL BERING SEA...

A 969 MB LOW NEAR 45N 166E WILL WEAKEN TO 997 MB AS IT TRACKS TO 
51N 179W MON AFTERNOON. AN ASSOCIATED FRONT ALONG THE WESTERN
ALEUTIANS WILL CROSS THE CENTRAL BERING SUN AND STALL OVER THE
EASTERN BERING MON.

$$

PKZ411-191500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT SAT MAY 18 2013

.TONIGHT...SE WIND 30 KT EXCEPT 20 KT N OF 57N. SEAS 11 FT EXCEPT 5
FT N OF 57N. PATCHY FOG. RAIN AND SNOW. 
.SUN...E WIND 20 TO 30 KT. SEAS 10 TO 13 FT. PATCHY FOG. RAIN.
.SUN NIGHT...N TO E WIND 20 KT. SEAS 12 FT. PATCHY FOG. RAIN SHOWERS.
.MON...NE WIND 20 KT. SEAS 12 FT. 
.MON NIGHT...N WIND 25 KT. SEAS 11 FT. 
.TUE...NW WIND 25 KT. SEAS 9 FT. 
.WED...W WIND 25 KT. SEAS 7 FT. 
.THU...W WIND 15 KT. SEAS 6 FT.  

$$

PKZ412-191500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT SAT MAY 18 2013

...GALE WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...S WIND 15 TO 25 KT. SEAS 6 FT. PATCHY FOG. 
.SUN...SE WIND 25 TO 35 KT. SEAS 9 TO 13 FT. PATCHY FOG. RAIN AND
SNOW. 
.SUN NIGHT...SE WIND 25 TO 35 KT. SEAS 12 TO 15 FT. AREAS OF FOG.
RAIN.
.MON AND MON NIGHT...SE WIND 25 KT. SEAS 13 FT. 
.TUE AND WED...SW WIND 25 KT. SEAS 10 FT. 
.THU...W WIND 15 KT. SEAS 5 FT.  

$$

PKZ413-191500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT SAT MAY 18 2013

...GALE WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...SE WIND 20 KT INCREASING TO 30 KT AFTER MIDNIGHT. SEAS 5
FT BUILDING TO 9 FT. PATCHY FOG. RAIN.
.SUN...SE WIND 25 TO 35 KT. SEAS 11 TO 14 FT. AREAS OF FOG. RAIN.
.SUN NIGHT...SE WIND 25 TO 35 KT. SEAS 11 TO 16 FT. AREAS OF FOG.
RAIN.
.MON...SE WIND 30 KT. SEAS 13 FT. 
.MON NIGHT...SE WIND 25 KT. SEAS 13 FT. 
.TUE...W WIND 25 KT. SEAS 11 FT. 
.WED...SW WIND 25 KT. SEAS 8 FT. 
.THU...W WIND 15 KT. SEAS 5 FT.  

$$

PKZ414-191500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT SAT MAY 18 2013

...GALE WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...S WIND 20 KT. SEAS 5 FT. 
.SUN...SE WIND 20 KT INCREASING TO 30 KT BY MIDDAY. SEAS 6 FT
BUILDING TO 9 FT. PATCHY FOG. 
.SUN NIGHT...SE WIND 30 TO 40 KT. SEAS 11 TO 15 FT. PATCHY FOG. RAIN.
.MON...S WIND 35 KT. SEAS 15 FT. 
.MON NIGHT...SE WIND 35 KT. SEAS 14 FT. 
.TUE...S WIND 30 KT. SEAS 12 FT. 
.WED...SW WIND 20 KT. SEAS 7 FT. 
.THU...SW WIND 15 KT. SEAS 4 FT. 

$$

577 
FZAK62 PAFC 191144
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SUN MAY 19 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.

PKZ499-200300-
400 AM AKDT SUN MAY 19 2013
.SYNOPSIS FOR CENTRAL BERING SEA...

A 969 MB LOW NEAR 45N 166E WILL WEAKEN TO 997 MB AS IT TRACKS TO 
51N 179W MON AFTERNOON. AN ASSOCIATED FRONT ALONG THE WESTERN
ALEUTIANS WILL CROSS THE CENTRAL BERING SUN AND STALL OVER THE
EASTERN BERING MON.

$$

PKZ411-200300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT SUN MAY 19 2013

.TODAY...E WIND 20 TO 30 KT. SEAS 12 FT...EXCEPT 8 FT N OF 56N.
PATCHY FOG. RAIN. 
.TONIGHT...E WIND 10 TO 20 KT. SEAS 11 FT. PATCHY FOG. RAIN.
.MON...NE WIND 15 TO 25 KT. SEAS 11 FT. 
.MON NIGHT...N WIND 25 KT. SEAS 9 FT. 
.TUE...NW WIND 30 KT. SEAS 9 FT. 
.WED...W WIND 25 KT. SEAS 8 FT. 
.THU...W WIND 15 KT. SEAS 5 FT.  

$$

PKZ412-200300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT SUN MAY 19 2013

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE WIND 25 TO 35 KT. SEAS 5 TO 10 FT. PATCHY FOG. RAIN. 
.TONIGHT...SE WIND 25 TO 35 KT. SEAS 9 TO 14 FT. AREAS OF FOG. RAIN.
.MON...SE WIND 15 TO 25 KT. SEAS 9 TO 14 FT. PATCHY FOG. 
.MON NIGHT...SE WIND 25 KT. SEAS 11 FT. 
.TUE AND WED...SW WIND 25 KT. SEAS 9 FT. 
.THU...SW WIND 20 KT. SEAS 6 FT. 

$$

PKZ413-200300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT SUN MAY 19 2013

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE WIND 30 TO 40 KT. SEAS 9 TO 13 FT. AREAS OF FOG. RAIN.
.TONIGHT...SE WIND 30 TO 40 KT DIMINISHING TO 20 TO 30 KT AFTER
MIDNIGHT. SEAS 10 TO 15 FT. AREAS OF FOG. RAIN.
.MON...SE WIND 20 TO 30 KT. SEAS 8 TO 13 FT. PATCHY FOG. RAIN.
.MON NIGHT...S WIND 25 KT. SEAS 12 FT. 
.TUE...W WIND 25 KT. SEAS 10 FT. 
.WED...SW WIND 25 KT. SEAS 8 FT. 
.THU...SW WIND 15 KT. SEAS 5 FT. 

$$

PKZ414-200300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT SUN MAY 19 2013

...GALE WARNING THROUGH MONDAY...

.TODAY...SE WIND 15 TO 25 KT INCREASING TO 25 TO 35 KT IN THE
AFTERNOON. SEAS 5 TO 10 FT. PATCHY FOG. 
.TONIGHT...SE WIND 35 TO 40 KT. SEAS 9 TO 14 FT. PATCHY FOG. RAIN AND
SNOW. 
.MON...SE WIND 30 TO 40 KT. SEAS 10 TO 15 FT. AREAS OF FOG. RAIN. 
.MON NIGHT...SE WIND 35 KT. SEAS 14 FT. 
.TUE...S WIND 35 KT. SEAS 11 FT. 
.WED...SW WIND 25 KT. SEAS 8 FT. 
.THU...S WIND 15 KT. SEAS 5 FT.  

$$
TP

362 
FZAK62 PAFC 192338
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT SUN MAY 19 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.

PKZ499-201500-
400 PM AKDT SUN MAY 19 2013
.SYNOPSIS FOR CENTRAL BERING SEA...

A 984 MB LOW NEAR 46N 173E WILL WEAKEN TO 995 MB AS IT MOVES TO 
52N 178W MON AFTERNOON. THIS LOW WILL THEN TRACK TO 57N 175W TUE
AFTERNOON AT 999 MB. AN ASSOCIATED FRONT OVER THE CENTRAL BERING 
WILL MOVE TO THE EASTERN BERING MON AND DISSIPATE ALONG THE 
SOUTHWEST ALASKA COAST ON TUE.

$$

PKZ411-201500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT SUN MAY 19 2013

.TONIGHT...NE WIND 15 TO 25 KT. SEAS 9 TO 13 FT. PATCHY FOG. RAIN.
.MON...NE WIND 15 TO 25 KT. SEAS 9 TO 13 FT. PATCHY FOG. RAIN.
.MON NIGHT...N WIND 15 TO 25 KT. SEAS 9 TO 12 FT. 
.TUE...NW WIND 25 KT. SEAS 10 FT. 
.TUE NIGHT...W WIND 25 KT. SEAS 9 FT. 
.WED...SW WIND 20 KT. SEAS 6 FT. 
.THU...W WIND 15 KT. SEAS 5 FT. 
.FRI...VARIABLE WIND 10 KT. SEAS 3 FT.  

$$

PKZ412-201500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT SUN MAY 19 2013

...GALE WARNING TONIGHT...

.TONIGHT...SE WIND 25 TO 35 KT. SEAS 12 TO 16 FT. AREAS OF FOG. RAIN.
.MON...SE WIND 20 TO 30 KT DIMINISHING TO 10 TO 25 KT IN THE
AFTERNOON. SEAS 10 TO 13 FT. PATCHY FOG. 
.MON NIGHT...SE WIND 10 TO 20 KT. SEAS 9 TO 11 FT. PATCHY FOG. RAIN.
.TUE...SE WIND 20 KT. SEAS 9 FT. 
.TUE NIGHT...W WIND 25 KT. SEAS 8 FT. 
.WED AND THU...SW WIND 20 KT. SEAS 7 FT. 
.FRI...VARIABLE WIND 10 KT. SEAS 3 FT.  

$$

PKZ413-201500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT SUN MAY 19 2013

...GALE WARNING TONIGHT...

.TONIGHT...E OF 176W...SE WIND 40 KT DIMINISHING TO 30 KT AFTER
MIDNIGHT. SEAS 16 FT. W OF 176W...SE WIND 20 KT. SEAS 11 FT. AREAS OF
FOG. RAIN.
.MON...E OF 176W...SE WIND 25 KT. SEAS 13 FT. W OF 176W...SE WIND 10
TO 20 KT. SEAS 8 TO 10 FT. AREAS OF FOG. RAIN.
.MON NIGHT...E OF 176W...SE WIND 15 TO 25 KT. SEAS 11 FT. W OF
176W...VARIABLE WIND 15 KT. SEAS 8 FT. PATCHY FOG. RAIN SHOWERS. 
.TUE...SW WIND 25 KT. SEAS 9 FT. 
.TUE NIGHT...W WIND 25 KT. SEAS 9 FT. 
.WED AND THU...SW WIND 20 KT. SEAS 7 FT. 
.FRI...VARIABLE WIND 10 KT. SEAS 3 FT.  

$$

PKZ414-201500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT SUN MAY 19 2013

...GALE WARNING THROUGH MONDAY...

.TONIGHT...SE WIND 25 TO 40 KT. SEAS 12 TO 16 FT. PATCHY FOG. RAIN
AND SNOW. 
.MON...SE WIND 25 TO 35 KT. SEAS 14 FT. AREAS OF FOG. RAIN.
.MON NIGHT...SE WIND 30 KT. SEAS 13 FT. PATCHY FOG. RAIN.
.TUE...S WIND 30 KT. SEAS 11 FT. 
.TUE NIGHT...S WIND 25 KT. SEAS 9 FT. 
.WED...SW WIND 20 KT. SEAS 7 FT. 
.THU...S WIND 15 KT. SEAS 5 FT. 
.FRI...VARIABLE WIND 10 KT. SEAS 3 FT.  

$$

899 
FZAK62 PAFC 201145
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT MON MAY 20 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.

PKZ499-210300-
400 AM AKDT MON MAY 20 2013
.SYNOPSIS FOR CENTRAL BERING SEA...

A 994 MB LOW NEAR 48N 179E WILL MOVE TO 60N 174W AS IT WEAKENS TO
1001 MB WED MORNING. AN ASSOCIATED FRONT OVER THE EASTERN BERING WILL
MOVE TO THE SOUTHWEST ALASKA COAST AND DISSIPATE TUE EVENING.

$$

PKZ411-210300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT MON MAY 20 2013

.TODAY...N TO E WIND 15 TO 25 KT. SEAS 11 FT. PATCHY FOG E OF 177E. 
.TONIGHT...N WIND 15 TO 25 KT. SEAS 10 FT. 
.TUE...NW WIND 15 TO 25 KT. SEAS 10 FT. 
.TUE NIGHT...W WIND 25 KT. SEAS 9 FT. 
.WED AND THU...SW WIND 20 KT. SEAS 6 FT. 
.FRI...NE WIND 15 KT. SEAS 4 FT.  

$$

PKZ412-210300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT MON MAY 20 2013

.TODAY...SE WIND 20 TO 30 KT...EXCEPT SE 10 TO 20 KT W OF 175W. SEAS
9 TO 14 FT. AREAS OF FOG. 
.TONIGHT...S TO E WIND 15 TO 25 KT. SEAS 7 TO 12 FT. PATCHY FOG.
RAIN.
.TUE...SE WIND 20 KT. SEAS 7 TO 11 FT. PATCHY FOG. RAIN.
.TUE NIGHT AND WED...W WIND 20 KT. SEAS 8 FT. 
.THU...S WIND 20 KT. SEAS 5 FT. 
.FRI...E WIND 20 KT. SEAS 5 FT.  

$$

PKZ413-210300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT MON MAY 20 2013

.TODAY...SE WIND 20 TO 30 KT...EXCEPT SE 10 TO 20 W OF 176W. SEAS 9
TO 14 FT. AREAS OF FOG. RAIN.
.TONIGHT...SE WIND 15 TO 25 KT...EXCEPT VARIABLE 15 KT W OF 176W.
SEAS 7 TO 12 FT. PATCHY FOG. RAIN.
.TUE...SE WIND 10 TO 20 KT BECOMING W IN THE AFTERNOON. SEAS 6 TO 11
FT. PATCHY FOG. 
.TUE NIGHT AND WED...W WIND 20 KT. SEAS 8 FT. 
.THU...S WIND 15 KT. SEAS 5 FT. 
.FRI...E WIND 20 KT. SEAS 5 FT.  

$$

PKZ414-210300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT MON MAY 20 2013

...GALE WARNING THROUGH TUESDAY...

.TODAY...SE WIND 25 TO 35 KT. SEAS 9 TO 14 FT. AREAS OF FOG. RAIN.
.TONIGHT...SE WIND 25 TO 35 KT. SEAS 9 TO 13 FT. PATCHY FOG. RAIN.
.TUE...SE WIND 25 TO 35 KT. SEAS 8 TO 12 FT. PATCHY FOG. RAIN.
.TUE NIGHT...S WIND 30 KT. SEAS 9 FT. 
.WED...SW WIND 25 KT. SEAS 7 FT. 
.THU...S WIND 15 KT. SEAS 5 FT. 
.FRI...SE WIND 25 KT. SEAS 6 FT.  

$$
TP

SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
130 PM AKDT FRI MAY 17 2013

.ANALYSIS AND UPPER LEVELS...
AN UPPER LEVEL TROUGH ACCOMPANIED BY MUCH-ADVERTISED UNSEASONABLY
COLD AIR IS MOVING THROUGH SOUTHERN ALASKA THIS AFTERNOON. A WEAK LOW
PRESSURE SYSTEM IN THE GULF HAS SPREAD WIDESPREAD PRECIPITATION
ACROSS ALL OF SOUTHCENTRAL ALASKA...WHICH IS FALLING GENERALLY IN THE
FORM OF RAIN AT LOWER ELEVATIONS AND SNOW AT HIGHER ELEVATIONS.
SATELLITE IMAGERY SHOWS THE UPPER TROUGH BECOMING INCREASINGLY
NEGATIVELY TILTED...WITH AN UPPER LEVEL LOW NEAR THE BERING STRAIT
DROPPING INTO THE BASE OF THE TROUGH. FURTHER WEST...THE COLD FRONT
HAS PASSED THROUGH MOST OF THE SOUTHWEST MAINLAND...CLEARING SKIES
AND ALLOWING TEMPERATURES TO DROP INTO THE TEENS EARLIER THIS MORNING
FROM THE KUSKOKWIM DELTA TO THE WESTERN KUSKOKWIM VALLEY. HIGH
TEMPERATURES THIS AFTERNOON WILL STRUGGLE TO REACH THE UPPER 20S IN
PARTS OF THE DELTA...WHERE THE AVERAGE HIGH THIS TIME OF YEAR SHOULD
BE UPWARDS OF 50 DEGREES. WAY OUT WEST...HIGH PRESSURE REMAINS IN
COMMAND OF THE BERING SEA REGION...THOUGH HIGH CLOUDS IN ADVANCE OF A
NORTH PACIFIC LOW ARE APPROACHING THE FAR WESTERN ALEUTIANS.

.MODEL DISCUSSION...
MODEL AGREEMENT HAS CONTINUED TO IMPROVE TODAY WITH THE NAM JOINING
THE OTHER SOLUTIONS IN THE TIMING AND EVOLUTION OF THE UPPER LEVEL
TROUGH OVER THE MAINLAND TODAY (NAM HAD BEEN FASTER WITH SPEED OF THE
UPPER TROUGH IN PREVIOUS DAYS). THUS CONFIDENCE HAS CONTINUED TO
INCREASE THAT AN UNUSUAL LATE-SEASON SNOWFALL EVENT WILL BE UNFOLDING
ACROSS SOUTHCENTRAL ALASKA TONIGHT AND CONTINUING THROUGH SATURDAY
MORNING. THE NAM WAS THE PRIMARY MODEL USED TODAY...THOUGH NO STRONG
PREFERENCES WERE NOTED AND NO MODELS WERE UNUSABLE.

.SHORT TERM FORECAST...
EAST OF THE ALASKA RANGE...COLD AIR IS SLOWLY BLEEDING INTO THE AREA
BUT THIS TREND WILL ACCELERATE DRAMATICALLY BY LATE THIS AFTERNOON.
AS THE ATMOSPHERIC COLUMN COOLS THE RAIN/SNOW MIX WILL TURN TO ALL
SNOW EVEN AT LOWER ELEVATIONS. HIGHER ELEVATIONS WILL SEE THE MOST
SNOWFALL...LIKELY APPROACHING 6 INCHES IN SOME LOCATIONS...WITH LOWER
ELEVATIONS SIGNIFICANTLY LESS. AS SKIES CLEAR ON SATURDAY AFTERNOON
TEMPERATURES SHOULD DROP SIGNIFICANTLY OVERNIGHT INTO SUNDAY MORNING.
RECORD LOW TEMPERATURES IN ANCHORAGE ARE IN THE MID 20S...AND THESE
RECORDS MAY BE THREATENED IF WINDS DIMINISH ENOUGH TO ALLOW
SIGNIFICANT OVERNIGHT COOLING. EVEN IF THE RECORD LOWS ARE NOT
REACHED...A WIDESPREAD HARD FREEZE IS EXPECTED ACROSS MUCH OF THE
REGION FROM THE INLAND KENAI PENINSULA NORTHWARD. TEMPERATURES WILL
START TO SLOWLY REBOUND ON SUNDAY AS HIGH PRESSURE MOVES IN FROM THE
WEST.

WEST OF THE ALASKA RANGE...BEHIND THE COLD FRONT TEMPERATURES DROPPED
WELL BELOW FREEZING THIS MORNING AT MANY INLAND LOCATIONS OVER THE
MAINLAND. MOSTLY CLEAR SKIES WILL ALLOW TEMPERATURES TO DROP AGAIN
TONIGHT INTO THE LOWER TEENS...BEFORE A STEADY WARMING TREND ENSUES
FOR THE LATTER HALF OF THE WEEKEND. HIGH PRESSURE CURRENTLY OVER THE
BERING SEA WILL DRIFT EASTWARD...CONTINUING BENIGN CONDITIONS AND
MOSTLY SUNNY SKIES. MARINE FOG/STRATUS OVER THE BERING AND ALEUTIANS
WILL START TO SLOWLY DISSIPATE SATURDAY AS A GALE-FORCE FRONT
APPROACHES THE WESTERN ALEUTIANS. THIS WEATHER FRONT AND ASSOCIATED
RAIN SHIELD WILL MOVE TO THE EASTERN BERING BY LATE SUNDAY.

.LONG TERM FORECAST...
A MORE PROGRESSIVE WEATHER PATTERN WILL MOVE INTO THE REGION STARTING
SUNDAY. THIS WILL SEE MOST AREAS RETURN TO NEAR-NORMAL TEMPERATURES
BY THE MIDDLE OF NEXT WEEK...WITH RAIN MOVING INTO THE SOUTHWEST
MAINLAND BUT SOUTHCENTRAL REMAINING MOSTLY DRY.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...SNOW ADVISORY 101 111 145
MARINE...GALE 130 132 150 172 175 176
FIRE WEATHER...NONE

DIXON MAY 13

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1000 AM AKDT FRI MAY 17 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0930 AM     SNOW             13 SE ANCHORAGE         61.08N 149.60W
05/17/2013  E0.0 INCH                           AK   TRAINED SPOTTER

            STEADY SNOWFALL WITH BIG SNOW FLAKES. SNOW IS MELTING ON
            CONTACT WITH THE GROUND FORMING A SLUSHY LAYER ON HARD
            SURFACES. SO FAR ONLY A TRACE OF SNOW HAS FALLEN.
            VISIBILITY IS ONE HALF MILE OF LESS. REPORT IS NEAR THE
            CHUGACH STATE PARK TRAILHEAD

&&

PETERSON

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1053 AM AKDT FRI MAY 17 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     SNOW             5 N HOMER               59.71N 151.52W
05/17/2013  M0.8 INCH                           AK   OTHER FEDERAL

            0.80 INCHES WET SNOW ACCUMULATION THIS MORNING ALONG
            DIAMOND RIDGE AT ELEVATION 800 FT NORTH OF HOMER.

&&

ADIXON