Alert archive / Alaska / Gale Warnings in 2013

Gale Warning 142, NWS Anchorage, AK

February 28, 2013

NWS Anchorage, AK issued this gale warning at Feb 28, 2013, 4:00 AM AKST. It was in force for 36 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 28, 2013, 4:00 AM AKST (13:00 UTC)
Expired
Mar 1, 2013, 4:00 PM AKST
In force
36 hr
Issued by
NWS Anchorage, AK

The text

As transmitted, in the capitals the NWS used until 2016.

610 
FZAK62 PAFC 281219
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKST THU FEB 28 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.

PKZ499-010300-
400 AM AKST THU FEB 28 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 987 MB LOW NEAR 51N 159W WILL WEAKEN AS IT EXITS TO THE NORTHEAST
PACIFIC TONIGHT. A DEVELOPING LOW WILL RAPIDLY INTENSIFY TO 972 MB AS
IT MOVES TO 51N 174W FRI NIGHT.
$$

PKZ411-010300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKST THU FEB 28 2013

...GALE WARNING FRIDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH FRIDAY...

.TODAY...N OF 56N...W WIND 10 TO 20 KT. HEAVY FREEZING SPRAY. SEAS 6
FT. S OF 56N...NW WIND 15 TO 25 KT. SEAS 8 FT. SNOW. FREEZING SPRAY. 
.TONIGHT...N OF 56N...W WIND 10 TO 20 KT. SEAS 6 FT. HEAVY FREEZING
SPRAY. S OF 56N...N WIND 10 TO 20 KT INCREASING TO 20 TO 30 KT AFTER
MIDNIGHT. SEAS 8 FT. SNOW SHOWERS. FREEZING SPRAY. 
.FRI...N WIND 25 TO 40 KT EXCEPT 10 TO 20 KT N OF 56N. SEAS 8 TO 14
FT. SNOW SHOWERS. HEAVY FREEZING SPRAY. 
.FRI NIGHT AND SAT...N WIND 40 KT. SEAS 15 FT. 
.SAT...N WIND 40 KT. SEAS 16 FT. 
.SUN...SE WIND 35 KT. SEAS 14 FT. 
.MON...SW WIND 25 KT. SEAS 17 FT.  

$$

PKZ412-010300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKST THU FEB 28 2013

...HEAVY FREEZING SPRAY WARNING TODAY AND FRIDAY...

.TODAY...NW WIND 10 TO 20 KT. SEAS 6 FT. HEAVY FREEZING SPRAY NEAR
THE ICE EDGE.
.TONIGHT...S WIND 15 KT BECOMING SE 25 KT AFTER MIDNIGHT EXCEPT NW 15
KT W OF 177W. SEAS 5 FT. SNOW. FREEZING SPRAY. 
.FRI...SE WIND 30 KT EXCEPT N 20 KT W OF 177W. SEAS 8 FT. SNOW. HEAVY
FREEZING SPRAY W OF 177W. 
.FRI NIGHT AND SAT...NE WIND 40 KT. SEAS 18 FT.  
.SUN...SE WIND 35 KT. SEAS 13 FT. 
.MON...S WIND 25 KT. SEAS 15 FT.  

$$

PKZ413-010300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKST THU FEB 28 2013

...GALE WARNING FRIDAY...

.TODAY...N WIND 20 KT BECOMING VARIABLE 10 KT IN THE AFTERNOON. W OF
176W...S WIND 10 TO 20 KT. SEAS 8 FT. SNOW. FREEZING SPRAY. 
.TONIGHT...S WIND 15 TO 25 KT. SEAS 7 FT. SNOW. FREEZING SPRAY. 
.FRI...SE WIND 30 KT BECOMING SE TO NE 45 KT IN THE AFTERNOON. SEAS 8
FT BUILDING TO 15 FT IN THE AFTERNOON. SNOW. FREEZING SPRAY W OF
176W. 
.FRI NIGHT...NE WIND 45 KT. SEAS 22 FT. 
.SAT...NW WIND 45 KT. SEAS 26 FT. 
.SUN...S WIND 35 KT. SEAS 13 FT. 
.MON...SW WIND 30 KT. SEAS 16 FT.  

$$

PKZ414-010300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKST THU FEB 28 2013

...GALE WARNING FRIDAY...
...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...N WIND 20 TO 30 KT. SEAS IN ICE FREE WATERS 9 FT. HEAVY
FREEZING SPRAY NEAR THE ICE EDGE. 
.TONIGHT...N WIND 15 TO 25 KT. W OF 167W...BECOMING SE 10 TO 20 KT
AFTER MIDNIGHT. SEAS IN ICE FREE WATERS 4 FT. FREEZING SPRAY. 
.FRI...SE WIND 15 TO 25 KT BECOMING SE 25 TO 40 KT IN THE AFTERNOON.
SEAS IN ICE FREE WATERS 7 FT BUILDING TO 12 FT. FREEZING SPRAY. 
.FRI NIGHT...SE WIND 45 KT. SEAS IN ICE FREE WATERS 18 FT. 
.SAT...E WIND 40 KT. SEAS IN ICE FREE WATERS 14 FT. 
.SUN AND MON...S WIND 35 KT. SEAS IN ICE FREE WATERS 11 FT. 

$$
3 follow-up statements
781 
FZAK62 PAFC 010031
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST THU FEB 28 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.

PKZ499-011500-
400 PM AKST THU FEB 28 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
WEAK LOW PRESSURE OVER THE CENTRAL BERING WILL DISSIPATE BY FRI
MORNING. A 989 MB NORTH PACIFIC LOW WILL INTENSIFY TO 971 MB AND
MOVE TO 50N 176W FRI AFTERNOON...THEN MOVE TO 52N 163W AT 983 MB SAT
AFTERNOON.
$$

PKZ411-011500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKST THU FEB 28 2013

...GALE WARNING FRIDAY AND FRIDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...NW WIND 20 KT. SEAS 7 FT. SNOW SHOWERS. HEAVY FREEZING
SPRAY. 
.FRI...N WIND 20 KT INCREASING TO 25 TO 35 KT IN THE AFTERNOON. SEAS
9 FT. SNOW SHOWERS. HEAVY FREEZING SPRAY. 
.FRI NIGHT...N WIND 30 TO 40 KT. SEAS 15 FT. SNOW SHOWERS. HEAVY
FREEZING SPRAY. 
.SAT...NW WIND 30 TO 40 KT DIMINISHING TO 15 TO 25 KT IN THE
AFTERNOON. SEAS 16 FT. 
.SAT NIGHT...NE WIND 15 TO 25 KT BECOMING SE 20 TO 30 KT AFTER
MIDNIGHT. SEAS 11 FT. 
.SUN...SE WIND 35 KT. SEAS 14 FT. 
.MON...SW WIND 25 KT. SEAS 17 FT. 
.TUE...W WIND 25 KT. SEAS 14 FT.  

$$

PKZ412-011500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKST THU FEB 28 2013

...GALE WARNING FRIDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...S WIND 15 KT INCREASING TO 25 KT AFTER MIDNIGHT. SEAS
5 FT. SNOW. FREEZING SPRAY. 
.FRI...SE WIND 20 TO 30 KT...EXCEPT W OF 175W...N WIND 15 TO 25 KT.
SEAS 7 FT. SNOW. HEAVY FREEZING SPRAY. 
.FRI NIGHT...N TO E WIND INCREASING TO 30 TO 40 KT AFTER MIDNIGHT.
SEAS 13 FT BUILDING TO 18 FT AFTER MIDNIGHT. SNOW. HEAVY FREEZING
SPRAY. 
.SAT...N TO E WIND 30 TO 40 KT. SEAS 17 FT. 
.SAT NIGHT...NW WIND 35 KT. SEAS 15 FT. 
.SUN...SE WIND 35 KT. SEAS 13 FT. 
.MON THROUGH TUE...S WIND 25 KT. SEAS 15 FT. 

$$

PKZ413-011500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKST THU FEB 28 2013

...GALE WARNING FRIDAY AND FRIDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING FRIDAY NIGHT...

.TONIGHT...S WIND 15 TO 25 KT. SEAS 7 FT. SNOW. FREEZING SPRAY. 
.FRI...SE WIND 30 KT BECOMING N TO E 35 TO 45 KT IN THE AFTERNOON.
SEAS 8 FT BUILDING TO 14 FT IN THE AFTERNOON. SNOW. FREEZING SPRAY. 
.FRI NIGHT...N TO E WIND 45 KT. SEAS 22 FT. SNOW. HEAVY FREEZING
SPRAY. 
.SAT...NW WIND 45 KT. SEAS 25 FT. 
.SAT NIGHT...NW WIND 40 KT. SEAS 23 FT. 
.SUN...S WIND 35 KT. SEAS 13 FT. 
.MON...SW WIND 30 KT. SEAS 16 FT. 
.TUE...SW WIND 25 KT. SEAS 14 FT.  

$$

PKZ414-011500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKST THU FEB 28 2013

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...N WIND 15 TO 25 KT BECOMING SE AFTER MIDNIGHT. SEAS IN 
ICE FREE WATERS 5 FT. FREEZING SPRAY.
.FRI...SE WIND 20 TO 30 KT INCREASING TO 30 TO 40 KT IN THE
AFTERNOON. SEAS IN ICE FREE WATERS 9 FT. FREEZING SPRAY. 
.FRI NIGHT...SE WIND 35 TO 45 KT. SEAS IN ICE FREE WATERS 17 FT. 
SNOW AND RAIN. 
.SAT...E WIND 40 KT. SEAS IN ICE FREE WATERS 13 FT. 
.SAT NIGHT...NE WIND 35 KT. SEAS IN ICE FREE WATERS 13 FT. 
.SUN THROUGH MON...S WIND 35 KT. SEAS IN ICE FREE WATERS 11 FT. 
.TUE...S WIND 20 KT. SEAS IN ICE FREE WATERS 10 FT.  

$$
475 
FZAK62 PAFC 011207
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKST FRI MAR 1 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.

PKZ499-020300-
400 AM AKST FRI MAR 1 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 967 MB NORTH PACIFIC LOW NEAR 49N 179W WILL MOVE TO 52N 167W AT 971
MB SAT MORNING...THEN MOVE TO NEAR 51N 157W AT 990 MB SUN MORNING. A
STRONG WEATHER FRONT WILL TRACK TO THE FAR WESTERN ALEUTIANS AND
BERING SEA EARLY SUN MORNING.

$$

PKZ411-020300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKST FRI MAR 1 2013

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

.TODAY...N WIND 30 TO 45 KT. SEAS 5 TO 10 FT. HEAVY FREEZING SPRAY.
.TONIGHT...N WIND 30 TO 40 KT. SEAS 8 TO 16 FT. HEAVY FREEZING SPRAY.

.SAT...NW WIND 20 TO 35 KT. SEAS 7 TO 13 FT. HEAVY FREEZING SPRAY. 
.SAT NIGHT...SE WIND 50 KT. SEAS 12 FT. 
.SUN...SE WIND 55 KT. SEAS 19 FT. 
.MON...SW WIND 30 KT. SEAS 22 FT. 
.TUE...W WIND 25 KT. SEAS 15 FT.  
$$

PKZ412-020300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKST FRI MAR 1 2013

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

.TODAY...E OF 176W...SE WIND 35 KT. W OF 175W...N WIND 25 KT
INCREASING TO 35 KT IN THE AFTERNOON. SEAS 5 TO 10 FT. SNOW. HEAVY
FREEZING SPRAY IN THE AFTERNOON W OF 176W. 
.TONIGHT...NE WIND 30 TO 45 KT. SEAS 9 TO 16 FT. SNOW. HEAVY FREEZING
SPRAY MAINLY W OF 175W. 
.SAT...NW WIND 40 KT. SEAS 9 TO 16 FT. SNOW. HEAVY FREEZING SPRAY
MAINLY W OF 174W. 
.SAT NIGHT...NW WIND 40 KT. SEAS 13 FT. 
.SUN...SE WIND 45 KT. SEAS 17 FT. 
.MON...S WIND 35 KT. SEAS 17 FT. 
.TUE...S WIND 20 KT. SEAS 14 FT.  
$$

PKZ413-020300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKST FRI MAR 1 2013

...STORM WARNING THROUGH SATURDAY...
...HEAVY FREEZING SPRAY WARNING TONIGHT AND SATURDAY...

.TODAY...E OF 176W...SE WIND 35 KT IN THE MORNING BECOMING E 50 KT. W
OF 176W...N WIND 35 KT IN THE MORNING INCREASING TO 60 KT. SEAS 9 FT
BUILDING TO 16 FT IN THE AFTERNOON. SNOW. FREEZING SPRAY W OF 176W. 
.TONIGHT...N WIND 60 KT. E OF 175W...E WIND 50 KT BECOMING NE 35 KT
AFTER MIDNIGHT. SEAS 13 TO 23 FT. SNOW AND RAIN. HEAVY FREEZING
SPRAY W OF 175W. 
.SAT...NW WIND 55 KT DIMINISHING TO 45 KT IN THE AFTERNOON. SEAS 13
TO 23 FT. SNOW. HEAVY FREEZING SPRAY W OF 174W. 
.SAT NIGHT...NW WIND 45 KT. SEAS 19 FT. 
.SUN...SE WIND 50 KT. SEAS 16 FT. 
.MON...SW WIND 30 KT. SEAS 18 FT. 
.TUE...SW WIND 25 KT. SEAS 14 FT.  
$$

PKZ414-020300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKST FRI MAR 1 2013

...STORM WARNING TONIGHT...

.TODAY...E WIND 30 KT INCREASING TO 45 KT IN THE AFTERNOON. SEAS IN
ICE FREE WATERS 6 FT BUILDING TO 11 FT IN THE AFTERNOON. SNOW.
FREEZING SPRAY. 
.TONIGHT...E WIND 35 TO 50 KT. SEAS IN ICE FREE WATERS 12 TO 18 FT.
SNOW AND RAIN. 
.SAT...E WIND 30 TO 45 KT BECOMING NW LATE IN THE AFTERNOON. SEAS IN
ICE FREE WATERS 11 FT. SNOW AND RAIN. 
.SAT NIGHT...NW WIND 40 KT. SEAS IN ICE FREE WATERS 13 FT. 
.SUN...NW WIND 30 KT. SEAS IN ICE FREE WATERS 10 FT. 
.MON...SE WIND 35 KT. SEAS IN ICE FREE WATERS 11 FT. 
.TUE...SW WIND 20 KT. SEAS IN ICE FREE WATERS 10 FT.  
$$
732 
FZAK62 PAFC 020030
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKST FRI MAR 1 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.

PKZ499-021500-
400 PM AKST FRI MAR 1 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 965 MB LOW NEAR 50N 175W WILL WEAKEN TO 980 MB AS IT MOVES TO 
51N 164W SAT AFTERNOON. THIS LOW WILL THEN CONTINUE TO WEAKEN AS 
IT EXITS TO THE NORTHEAST PACIFIC SAT NIGHT AND SUN. ANOTHER 
PACIFIC LOW WILL TRACK TO 54N 165E SUN AFTERNOON PUSHING A STRONG
FRONT TO THE CENTRAL BERING.
$$

PKZ411-021500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKST FRI MAR 1 2013

...STORM WARNING SATURDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...N WIND 30 TO 40 KT. SEAS 10 TO 16 FT. HEAVY FREEZING
SPRAY. 
.SAT...NW WIND 25 TO 35 KT DIMINISHING TO 10 TO 20 KT IN THE
AFTERNOON. SEAS 9 TO 14 FT. HEAVY FREEZING SPRAY. 
.SAT NIGHT...VARIABLE WIND 15 KT BECOMING SE 45 TO 55 KT AFTER
MIDNIGHT. SEAS 13 FT. HEAVY FREEZING SPRAY. 
.SUN...SE WIND 55 KT. SEAS BUILDING TO 20 FT. 
.SUN NIGHT...S WIND 35 KT. SEAS 17 FT. 
.MON...SW WIND 30 KT. SEAS 21 FT. 
.TUE...W WIND 25 KT. SEAS 15 FT. 
.WED...W WIND 15 KT. SEAS 8 FT.

$$

PKZ412-021500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKST FRI MAR 1 2013

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

.TONIGHT...NE WIND 30 TO 40 KT. SEAS 17 FT. SNOW. HEAVY FREEZING
SPRAY. 
.SAT...N WIND 30 TO 40 KT. SEAS 17 FT. SNOW. HEAVY FREEZING SPRAY. 
.SAT NIGHT...NW WIND 25 TO 35 KT DIMINISHING TO 15 TO 25 KT AFTER
MIDNIGHT. SEAS 12 FT. HEAVY FREEZING SPRAY. 
.SUN...VARIABLE WIND 15 KT INCREASING TO SE 40 TO 50 KT IN THE
AFTERNOON. SEAS 12 FT. 
.SUN NIGHT...S WIND 45 KT. SEAS 16 FT. 
.MON...S WIND 35 KT. SEAS 17 FT. 
.TUE...S WIND 20 KT. SEAS 14 FT. 
.WED...VARIABLE WIND 10 KT. SEAS 9 FT.  

$$

PKZ413-021500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKST FRI MAR 1 2013

...STORM WARNING THROUGH SATURDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...N TO E WIND 45 TO 55 KT. SEAS 20 FT. SNOW. HEAVY FREEZING
SPRAY. 
.SAT...N WIND 40 TO 50 KT. SEAS 21 FT. SNOW. HEAVY FREEZING SPRAY. 
.SAT NIGHT...NW WIND 35 TO 45 KT DIMINISHING TO 25 KT AFTER 
MIDNIGHT. SEAS 17 FT SUBSIDING TO 12 FT AFTER MIDNIGHT. HEAVY
FREEZING SPRAY. 
.SUN...VARIABLE WIND 15 KT INCREASING TO S 40 TO 50 KT IN THE
AFTERNOON. SEAS 16 FT. 
.SUN NIGHT...S WIND 45 KT. SEAS 16 FT. 
.MON...SW WIND 30 KT. SEAS 18 FT. 
.TUE...SW WIND 25 KT. SEAS 14 FT. 
.WED...W WIND 15 KT. SEAS 10 FT.  

$$

PKZ414-021500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKST FRI MAR 1 2013

...STORM WARNING TONIGHT...

.TONIGHT...E WIND 40 TO 50 KT. SEAS IN ICE FREE WATERS 15 FT. SNOW.
FREEZING SPRAY.
.SAT...E WIND 40 KT DIMINISHING TO VARIABLE WIND 20 KT IN THE
AFTERNOON. SEAS IN ICE FREE WATERS 11 FT. SNOW. 
.SAT NIGHT...VARIABLE WIND 15 KT INCREASING TO N 25 TO 35 KT BY
MIDNIGHT. SEAS  IN ICE FREE WATERS 9 FT. FREEZING SPRAY. 
.SUN...NW WIND 25 KT. SEAS IN ICE FREE WATERS 9 FT. 
.SUN NIGHT...SE WIND 40 KT. SEAS IN ICE FREE WATERS 9 FT. 
.MON...S WIND 35 KT. SEAS IN ICE FREE WATERS 12 FT. 
.TUE...SW WIND 20 KT. SEAS IN ICE FREE WATERS 10 FT. 
.WED...SE WIND 15 KT. SEAS IN ICE FREE WATERS 9 FT.  

$$

What forecasters said that day

The local office's own words before this gale warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Anchorage, AK wrote its last area forecast discussion before this gale warning went out at Feb 27, 12:20 PM AKST, 15 hours 40 minutes earlier.

Area forecast discussion, Feb 27, 12:20 PM AKST, 15 hours 40 minutes before
SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
1220 PM AKST WED FEB 27 2013

.ANALYSIS AND UPPER LEVELS...AN UPPER LEVEL TROUGH EXTENDS FROM
THE CENTRAL ALEUTIANS TO SOUTHCENTRAL ALASKA AND THE GULF OF ALASKA
WITH RIDGING OVER INTERIOR ALASKA AND OVER THE WESTERN BERING AND
ALEUTIANS. SEVERAL FEATURES ARE MOVING THROUGH THE TROUGH AND AROUND
A FAIRLY LARGE AND DIFFUSE UPPER LEVEL CLOSED LOW ALONG THE ALASKA
PENINSULA. A SMALL BUT SHARP SHORT-WAVE TROUGH OVER THE NORTHERN
GULF IS ROTATING NORTHWESTWARD ACROSS THE KENAI PENINSULA. STRONGER
WINDS OUT AHEAD OF THE TROUGH ARE WEAKENING AS IT MOVES ONSHORE.
HOWEVER...PRESSURE RISES AND A MORE UNSTABLE AIR MASS BEHIND THE
TROUGH ARE LEADING TO GUSTY WINDS AND SHOWERS. A MODERATE STRENGTH
LOW IS TRACKING NORTHWARD ACROSS THE EASTERN GULF BUT THIS IS
EXPECTED TO WEAKEN OVER THE NORTHEAST GULF WITH LITTLE IMPACT TO
SOUTHCENTRAL ALASKA. A VORT-MAX EAST OF THE PRIBILOF ISLANDS IS
ROTATING SOUTHWESTWARD AROUND THE UPPER CENTER AND PRODUCING AREAS
OF LIGHT SNOW. A MATURE LOW SOUTH OF THE EASTERN ALEUTIANS IS
WEAKENING AS IT TRACKS EASTWARD. A NARROW BAND OF STRONGER WINDS
ON THE BACK SIDE OF THIS LOW IS PRODUCING AREAS OF BLOWING SNOW
FROM THE PRIBILOF ISLANDS TO THE CENTRAL ALEUTIANS.

.MODEL DISCUSSION...MODELS ALL INITIALIZED FAIRLY WELL WITH MAJOR
FEATURES BUT SOLUTIONS QUICKLY DIVERGE. ECMWF AND UMKET SEEM TO
HAVE A BETTER TRACK (FURTHER EAST) ON THE EASTERN GULF LOW BASED
ON LATEST SATELLITE TRENDS. THE NAM IS AN OUTLIER WITH THE UPPER
LEVEL SHORT-WAVE ASSOCIATED WITH THIS SURFACE LOW AS IT MOVES TO
SOUTHCENTRAL EARLY THURSDAY. MODELS ARE ALL OVER THE PLACE WITH
TRACK AND STRENGTH OF A LOW FORMING EAST OF SHEMYA TONIGHT AND
MOVING INTO THE CENTRAL BERING THURSDAY. THE ONLY TREND SEEMS TO
BE TOWARD A DEEPER LOW. WILL TREND TOWARD THE GFS TO DEPICT A SMALL
AREA OF SMALLER WINDS AROUND THE LOW CENTER RECOGNIZING THAT THERE
IS LOW CONFIDENCE IN THE TRACK. FOR NEXT MAJOR STORM SYSTEM MOVING
TO THE ALEUTIANS FRIDAY THERE CONTINUES TO BE SOME SPEED AND TRACK
DIFFERENCES. THERE IS A TREND TOWARD FASTER AND FURTHER NORTH.
CURRENT FORECAST WAS BASED ON THE SLOWER AND FURTHER SOUTH ECMWF
SO WILL BLEND TOWARD THE LATEST ECMWF TO REFLECT THE OVERALL TREND.

.SHORT TERM FORECAST...

SOUTHCENTRAL ALASKA...AS TROUGH MOVES ACROSS THE KENAI PENINSULA
AND OVER COOK INLET THIS AFTERNOON WINDS WILL RAPIDLY INCREASE
ALONG TURNAGAIN ARM THANKS TO AN INCREASED PRESSURE GRADIENT AND
PRESSURE RISES BEHIND THE TROUGH. WINDS WILL COME DOWN ACROSS THE
REGION OVERNIGHT AS TROUGH AND AREA OF PRESSURE RISES EXITS TO THE
NORTHWEST. THERE WILL BE A BIT OF A REPEAT AS ANOTHER TROUGH MOVES
THROUGH IN A SIMILAR FASHION EARLY THURSDAY. HOWEVER THE SECOND
TROUGH WILL BE WEAKER SO DON'T EXPECT WINDS TO BE AS STRONG. THE
BULK OF PRECIP THIS AFTERNOON AND TONIGHT WILL REMAIN ALONG THE
COAST PARTLY DUE TO THE STRONG WINDS ACROSS THE MOUNTAINS. WITH
WEAKER WINDS TOMORROW AND A SLIGHTLY MORE FAVORABLE ORIENTATION OF
THE UPPER TROUGH EXPECT TO SEE MORE PRECIP MAKE IT ACROSS THE KENAI
MOUNTAINS...ALTHOUGH MOST OF IT SHOULD REMAIN SOUTH OF ANCHORAGE.
ANOTHER LOW WILL TRACK INTO THE EASTERN GULF THURSDAY BUT EXPECT
IT TO REMAIN IN THE EAST AND ONLY AFFECT THE COPPER BASIN AND
EASTERN PRINCE WILLIAM SOUND AREAS.

SOUTHWEST ALASKA...SOUTHWEST ALASKA WILL BE ON THE PERIPHERY OF
FEATURES MOVING THROUGH THE REGION. HIGH PRESSURE WILL THEN BUILD
ON THURSDAY NIGHT AND FRIDAY AND HOLD IN UNTIL ARRIVAL OF A FRONT
FROM THE BERING SEA SOMETIME THIS WEEKEND. THUS...EXPECT GENERALLY
BENIGN WEATHER FOR THE NEXT FEW DAYS.

BERING SEA/ALEUTIANS...THE BERING SEA WILL REMAIN RELATIVELY QUIET
UNTIL ARRIVAL OF A MAJOR PACIFIC STORM THURSDAY NIGHT AND FRIDAY.
THERE IS STILL UNCERTAINTY IN THE EXACT TRACK AND SPEED OF THIS LOW.
HOWEVER BASED ON THE STRENGTH THERE IS POTENTIAL FOR HIGH WIND
AND/OR BLIZZARD CONDITIONS FROM THE PRIBILOFS TO THE ALEUTIANS.

.LONG TERM FORECAST...CONFIDENCE IS GAINING IN DEVELOPMENT OF A
BLOCKING RIDGE FROM THE ARCTIC SOUTHWARD ACROSS MAINLAND ALASKA
THIS WEEKEND...ALTHOUGH UNCERTAINTY REMAINS IN HOW STRONG IT WILL
BE AND HOW LONG IT WILL HOLD OVER THE AREA. INITIALLY THIS WILL
CAUSE THE MAJOR SYSTEM ALONG THE ALEUTIANS AT THE END OF THE WEEK
TO DIVE SOUTHEASTWARD TOWARD THE NORTHEAST PACIFIC...KEEPING
SOUTHCENTRAL ALASKA DRY. ANOTHER SYSTEM MOVING INTO THE BERING
LATER THIS WEEKEND WILL TRY TO MOVE EASTWARD INTO THIS RIDGE AND
BRING PRECIP BACK TO SOUTHCENTRAL EARLY TO MID WEEK.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE.
MARINE...STORM WARNING...175 176.
         GALE WARNING...120 170 172.
         HEAVY FREEZING SPRAY WARNING...165 179.
FIRE WEATHER...NONE.

SEB FEB 13

The office that day

Everything else NWS Anchorage, AK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 27, 4:00 PM AKSTSmall Craft AdvisoryAFC12 hr
Feb 27, 4:00 PM AKSTSmall Craft AdvisoryAFC60 hr
Feb 27, 4:00 PM AKSTStorm WarningAFC4 days
Feb 27, 4:00 PM AKSTHeavy Freezing Spray WarningAFC60 hr
Feb 28, 4:00 AM AKSTGale WarningAFC24 hr
Feb 28, 4:00 AM AKSTGale WarningAFC12 hr
Feb 28, 4:00 AM AKSTGale WarningAFC5 days
Feb 28, 4:00 AM AKSTStorm WarningAFC20 hr
Feb 28, 4:36 AM AKSTBlizzard WatchAFC12 hr

Nearby

Gale Warnings in Alaska, 2013Every gale warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.