Alert archive / Alaska / Gale Warnings in 2013

Gale Warning 533, NWS Anchorage, AK

September 19, 2013

NWS Anchorage, AK issued this gale warning at Sep 19, 2013, 4:00 AM AKDT. It was in force for 48 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
Sep 19, 2013, 4:00 AM AKDT (12:00 UTC)
Expired
Sep 21, 2013, 4:00 AM AKDT
In force
48 hr
Issued by
NWS Anchorage, AK

The text

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

105 
FZAK62 PAFC 191141
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT THU SEP 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 THU SEP 19 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
HIGH PRESSURE RIDGE WILL REMAIN OVER THE BERING SEA THROUGH THIS
EVENING. A 998 MB LOW WILL DEVELOP NEAR 48N 174E THU EVENING AND
RAPIDLY STRENGTHEN TO 973 MB NEAR 54N 170W FRI AFTERNOON. BY SAT
MORNING THE LOW WILL TRACK TO 55N 157W AT 969 MB.

$$

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

.TODAY...SW WIND 15 TO 25 KT. SEAS 10 TO 14 FT. PATCHY FOG. 
.TONIGHT...S WIND 15 KT. SEAS 5 TO 9 FT. PATCHY FOG. RAIN.
.FRI...VARIABLE WIND 15 KT BECOMING N 30 KT BY LATE MORNING.
SEAS 5 TO 9 FT. 
.FRI NIGHT...NW WIND 25 KT. SEAS 8 FT. 
.SAT...S WIND 30 KT. SEAS 11 FT. 
.SUN...S WIND 20 KT. SEAS 10 FT. 
.MON...NE WIND 15 KT. SEAS 10 FT.  

$$

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

.TODAY...W WIND 10 TO 20 KT. SEAS 10 TO 14 FT. AREAS OF FOG. 
.TONIGHT...SW WIND 15 KT BECOMING SE AFTER MIDNIGHT. SEAS 9
FT. PATCHY FOG. 
.FRI...E WIND 20 KT. SEAS 9 FT. PATCHY FOG. RAIN.
.FRI NIGHT AND SAT...N WIND 25 KT. SEAS 9 FT. 
.SUN...S WIND 20 KT. SEAS 8 FT. 
.MON...E WIND 15 KT. SEAS 9 FT.  

$$

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

...GALE WARNING FRIDAY...

.TODAY...SW WIND 10 TO 20 KT. SEAS 9 TO 13 FT. PATCHY FOG. 
.TONIGHT...S WIND 20 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.FRI...W OF 175W...W WIND 25 TO 35 KT. E OF 175W...E WIND 15 TO 25
KT. SEAS 11 FT. PATCHY FOG. 
.FRI NIGHT...NW WIND 30 KT. SEAS 13 FT. 
.SAT...W WIND 25 KT. SEAS 10 FT. 
.SUN...SW WIND 20 KT. SEAS 9 FT. 
.MON...W WIND 15 KT. SEAS 9 FT.  

$$

PKZ414-200300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT THU SEP 19 2013

.TODAY...W WIND 20 KT. SEAS 8 TO 11 FT. AREAS OF FOG. 
.TONIGHT...W WIND 15 KT. SEAS 7 FT. PATCHY FOG. 
.FRI...S WIND 20 KT BECOMING E 30 KT IN THE AFTERNOON. SEAS 7 TO 11
FT. PATCHY FOG. RAIN.
.FRI NIGHT...N WIND 30 KT. SEAS 11 FT. 
.SAT...NW WIND 30 KT. SEAS 11 FT. 
.SUN...W WIND 20 KT. SEAS 8 FT. 
.MON...SW WIND 15 KT. SEAS 8 FT.  

$$
4 follow-up statements
161 
FZAK62 PAFC 192256
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT THU SEP 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 THU SEP 19 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 1005 MB LOW NEAR 50N 173E WILL RAPIDLY STRENGTHEN TO 973 MB NEAR
56N 167W FRI AFTERNOON AND MOVE INTO THE WESTERN GULF ON SAT MORNING.
A 994 MB NORTHWEST PACIFIC LOW WILL MOVE TO 55N 166E ON SAT
AFTERNOON.
$$

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

.TONIGHT...W WIND 20 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.FRI...NW WIND 25 KT. SEAS 10 FT. RAIN.
.FRI NIGHT AND SAT...NW WIND 25 KT. SEAS 10 FT. 
.SAT NIGHT...S WIND 30 KT. SEAS 11 FT. 
.SUN...S WIND 25 KT. SEAS 10 FT. 
.MON...NE WIND 15 KT. SEAS 10 FT. 
.TUE...W WIND 20 KT. SEAS 10 FT.  

$$

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

.TONIGHT...SW WIND 15 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.FRI AND FRI NIGHT...N WIND 25 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.SAT...NW WIND 25 KT. SEAS 10 FT. 
.SAT NIGHT...NW WIND 25 KT. SEAS 9 FT. 
.SUN...S WIND 20 KT. SEAS 8 FT. 
.MON...E WIND 15 KT. SEAS 9 FT. 
.TUE...NW WIND 15 KT. SEAS 8 FT.  

$$

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

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

.TONIGHT...S WIND 20 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.FRI...SW WIND 40 KT BECOMING NW 35 KT IN THE AFTERNOON. SEAS 13 FT.
PATCHY FOG. RAIN.
.FRI NIGHT...NW WIND 35 KT. SEAS 13 FT. PATCHY FOG. 
.SAT...NW WIND 25 KT. SEAS 10 FT. 
.SAT NIGHT AND SUN...SW WIND 25 KT. SEAS 9 FT. 
.MON...W WIND 15 KT. SEAS 9 FT. 
.TUE...NW WIND 20 KT. SEAS 10 FT.  

$$

PKZ414-201500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT THU SEP 19 2013

.TONIGHT...W WIND 15 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.FRI...E WIND 30 KT. SEAS 11 FT. PATCHY FOG. RAIN.
.FRI NIGHT...N WIND 30 KT. SEAS 11 FT. PATCHY FOG. RAIN.
.SAT...NW WIND 30 KT. SEAS 12 FT. 
.SAT NIGHT...NW WIND 35 KT. SEAS 14 FT. 
.SUN...W WIND 25 KT. SEAS 10 FT. 
.MON...SW WIND 15 KT. SEAS 8 FT. 
.TUE...NW WIND 20 KT. SEAS 7 FT.  

$$
925 
FZAK62 PAFC 201139
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT FRI SEP 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 FRI SEP 20 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 991 MB LOW NEAR 54N 180W WILL RAPIDLY STRENGTHEN TO 974 MB NEAR
56N 166W THIS AFTERNOON AND MOVE INTO THE WESTERN GULF ON SAT MORNING
AT 970 MB NEAR 56N 155W. A 991 MB NORTHWEST PACIFIC LOW WILL MOVE TO
57N 167E ON SUN AFTERNOON.

$$

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

.TODAY...NW WIND 20 TO 30 KT. SEAS 8 TO 12 FT. 
.TONIGHT...NW WIND 15 TO 25 KT. SEAS 6 TO 9 FT. 
.SAT...VARIABLE WIND 15 KT BECOMING S 30 KT IN THE AFTERNOON. SEAS 8 
TO 12 FT. RAIN.
.SAT NIGHT...S WIND 30 KT. SEAS 11 FT. 
.SUN...SW WIND 25 KT. SEAS 10 FT. 
.MON...N WIND 20 KT. SEAS 8 FT. 
.TUE...W WIND 20 KT. SEAS 8 FT.  

$$

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

.TODAY...VARIABLE WIND 15 KT BECOMING N 25 KT THIS AFTERNOON.
SEAS 8 FT. PATCHY FOG. RAIN.
.TONIGHT...N WIND 15 TO 25 KT. SEAS 9 TO 12 FT. PATCHY FOG. 
.SAT...NW WIND 20 TO 30 KT. SEAS 9 TO 13 FT. 
.SAT NIGHT...NW WIND 25 KT. SEAS 9 FT. 
.SUN...S WIND 25 KT. SEAS 8 FT. 
.MON...E WIND 20 KT. SEAS 9 FT. 
.TUE...NW WIND 20 KT. SEAS 10 FT.  

$$

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

...GALE WARNING THROUGH TONIGHT...

.TODAY...S OF 55N...S WIND 25 KT BECOMING SW 40 KT IN THE
AFTERNOON. SEAS 12 TO 17 FT. N OF 55N...VARIABLE WIND 15 KT BECOMING
N 20 KT IN THE AFTERNOON. SEAS 8 FT. PATCHY FOG. RAIN.
.TONIGHT...NW WIND 35 KT. SEAS 13 TO 17 FT. PATCHY FOG. 
.SAT...NW WIND 15 TO 25 KT. SEAS 8 TO 12 FT. 
.SAT NIGHT AND SUN...SW WIND 25 KT. SEAS 9 FT. 
.MON...W WIND 15 KT. SEAS 7 FT. 
.TUE...NW WIND 20 KT. SEAS 11 FT.  

$$

PKZ414-210300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT FRI SEP 20 2013

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...VARIABLE WIND 15 KT BECOMING E 20 TO 30 KT IN THE
AFTERNOON. SEAS 6 TO 9 FT. PATCHY FOG. RAIN.
.TONIGHT...N WIND 25 TO 35 KT. SEAS 9 TO 13 FT. PATCHY FOG. 
.SAT AND SAT NIGHT...NW WIND 35 KT. SEAS 14 FT. 
.SUN...W WIND 25 KT. SEAS 9 FT. 
.MON...S WIND 15 KT. SEAS 5 FT. 
.TUE...NW WIND 20 KT. SEAS 12 FT.  

$$
028 
FZAK62 PAFC 202300
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM AKDT FRI SEP 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.

PKZ499-211500-
400 PM AKDT FRI SEP 20 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 971 MB LOW NEAR 56N 166W WILL MOVE TO 56N 153W AT 969 MB TONIGHT
THEN MOVE EAST INTO THE GULF. A 995 MB LOW WILL MOVE TO
55N 166E ON SAT AFTERNOON AND REMAIN NEARLY STATIONARY THROUGH SUN
AFTERNOON.
$$

PKZ411-211500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT FRI SEP 20 2013

...GALE WARNING SATURDAY NIGHT...

.TONIGHT...NW WIND 15 TO 25 KT. SEAS 6 TO 9 FT. PATCHY FOG. 
.SAT...NW WIND 20 KT BECOMING S 25 KT IN THE AFTERNOON. SEAS 8 FT.
AREAS OF FOG. 
.SAT NIGHT...S WIND 25 TO 35 KT. SEAS 7 TO 11 FT. AREAS OF FOG. RAIN.
.SUN...S WIND 20 TO 30 KT. SEAS 6 TO 10 FT. 
.SUN NIGHT...SW WIND 20 KT. SEAS 8 FT. 
.MON...N WIND 20 TO 30 KT. SEAS 6 TO 11 FT. 
.TUE...NW WIND 20 TO 30 KT. SEAS 7 TO 11 FT. 
.WED...SW WIND 25 TO 35 KT. SEAS 11 TO 16 FT.  

$$

PKZ412-211500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT FRI SEP 20 2013

.TONIGHT...NW WIND 15 TO 25 KT. SEAS 6 TO 9 FT. PATCHY FOG. RAIN.
.SAT...NW WIND 20 TO 30 KT. SEAS 7 TO 10 FT. PATCHY FOG. 
.SAT NIGHT...N WIND 15 TO 25 KT BECOMING S 20 KT AFTER MIDNIGHT. SEAS
6 TO 9 FT. AREAS OF FOG. RAIN.
.SUN...SE WIND 15 TO 25 KT. SEAS 7 FT. 
.SUN NIGHT...SE WIND 15 TO 25 KT. SEAS 8 FT. 
.MON...E WIND 20 TO 30 KT. SEAS 6 TO 10 FT. 
.TUE...N WIND 25 TO 35 KT. SEAS 12 TO 17 FT. 
.WED...SW WIND 20 TO 30 KT. SEAS 8 TO 13 FT.  

$$

PKZ413-211500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT FRI SEP 20 2013

...GALE WARNING TONIGHT...

.TONIGHT...NW WIND 25 TO 35 KT. SEAS 8 TO 13 FT. PATCHY FOG. 
.SAT...NW WIND 15 TO 25 KT. SEAS 6 TO 10 FT. AREAS OF FOG. 
.SAT NIGHT...SW WIND 15 TO 25 KT. SEAS 8 FT. AREAS OF FOG. RAIN.
.SUN...SW WIND 15 TO 25 KT. SEAS 6 TO 10 FT. 
.SUN NIGHT...SW WIND 15 TO 25 KT. SEAS 6 TO 10 FT. 
.MON...SE WIND 15 TO 25 KT. SEAS 6 TO 10 FT. 
.TUE...NW WIND 25 TO 35 KT. SEAS 14 TO 20 FT. 
.WED...SW WIND 25 TO 35 KT. SEAS 10 TO 15 FT.  

$$

PKZ414-211500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT FRI SEP 20 2013

...GALE WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...N WIND 25 TO 35 KT. SEAS 9 TO 13 FT. RAIN SHOWERS. 
.SAT...NW WIND 25 TO 35 KT. SEAS 8 TO 12 FT. 
.SAT NIGHT...NW WIND 25 TO 35 KT. SEAS 9 TO 13 FT. 
.SUN...W WIND 15 TO 25 KT. SEAS 6 TO 10 FT. 
.SUN NIGHT...SW WIND 15 KT. SEAS 7 FT. 
.MON...SE WIND 20 TO 30 KT. SEAS 6 TO 10 FT. 
.TUE...N WIND 25 TO 35 KT. SEAS 10 TO 16 FT. 
.WED...W WIND 20 TO 30 KT. SEAS 8 TO 14 FT.  

$$
925 
FZAK62 PAFC 211136
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SAT SEP 21 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.

PKZ499-220300-
400 AM AKDT SAT SEP 21 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 994 MB LOW WILL MOVE TO NEAR 56N 168E THIS EVENING AND WILL REMAIN
NEARLY STATIONARY THROUGH SUN AFTERNOON THEN MOVE TO 53N 173E AT 992
MB ON MONDAY MORNING. 

$$

PKZ411-220300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT SAT SEP 21 2013

...GALE WARNING TONIGHT...

.TODAY...NW WIND 20 KT BECOMING S 30 KT IN THE AFTERNOON. SEAS 9 FT.
AREAS OF FOG. RAIN.
.TONIGHT...S WIND 35 KT. SEAS 15 FT. AREAS OF FOG. RAIN.
.SUN...S WIND 30 KT. SEAS 12 FT. PATCHY FOG. RAIN.
.SUN NIGHT...SW WIND 25 KT. SEAS 10 FT. 
.MON...N WIND 30 KT. SEAS 12 FT. 
.TUE...NW WIND 30 KT. SEAS 12 FT. 
.WED...SW WIND 35 KT. SEAS 17 FT.  

$$

PKZ412-220300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT SAT SEP 21 2013

.TODAY...N WIND 30 KT. SEAS 10 TO 13 FT. PATCHY FOG. 
.TONIGHT...NW WIND 30 KT BECOMING SW 25 KT AFTER MIDNIGHT. SEAS
8 TO 12 FT. AREAS OF FOG. 
.SUN...S WIND 25 KT. SEAS 8 FT. AREAS OF FOG. RAIN.
.SUN NIGHT...SE WIND 25 KT. SEAS 8 FT. 
.MON...E WIND 35 KT. SEAS 9 FT. 
.TUE...N WIND 40 KT. SEAS 14 FT. 
.WED...SW WIND 35 KT. SEAS 15 FT.  

$$

PKZ413-220300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT SAT SEP 21 2013

.TODAY...NW WIND 30 KT. SEAS 10 TO 13 FT. PATCHY FOG. 
.TONIGHT...W WIND 20 KT BECOMING SW 30 KT AFTER MIDNIGHT. SEAS
8 TO 12 FT. AREAS OF FOG. RAIN.
.SUN...S WIND 30 KT. SEAS 11 FT. AREAS OF FOG. RAIN.
.SUN NIGHT...SW WIND 25 KT. SEAS 11 FT. 
.MON...S WIND 30 KT. SEAS 8 FT. 
.TUE...NW WIND 40 KT. SEAS 17 FT. 
.WED...SW WIND 35 KT. SEAS 17 FT.  

$$

PKZ414-220300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT SAT SEP 21 2013

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW WIND 35 KT. SEAS 11 TO 15 FT. PATCHY FOG. 
.TONIGHT...NW WIND 40 KT. SEAS 14 TO 17 FT. PATCHY FOG. 
.SUN...W WIND 30 KT. SEAS 9 TO 12 FT. AREAS OF FOG. RAIN.
.SUN NIGHT...SW WIND 20 KT. SEAS 8 FT. 
.MON...SE WIND 35 KT. SEAS 9 FT. 
.TUE...N WIND 35 KT. SEAS 17 FT. 
.WED...W WIND 30 KT. SEAS 13 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 Sep 18, 2:00 PM AKDT, 14 hours earlier.

Area forecast discussion, Sep 18, 2:00 PM AKDT, 14 hours before
SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKDT WED SEP 18 2013

.ANALYSIS AND UPPER LEVELS...
A LOOK AT THE MORNING WEATHER MAP CONTINUES TO SHOW A DEEP UPPER
TROUGH ENCOMPASSING MOST OF MAINLAND ALASKA. THE UPPER TROUGH THAT
BROUGHT RAIN TO PRINCE WILLIAM SOUND AND THE COPPER RIVER BASIN HAS
NOW WEAKENED AND DRIFTED INTO THE INTERIOR...WHILE A COLD UPPER
TROUGH EXTENDED DOWN FROM AN UPPER LOW OVER NORTHWEST ALASKA IS
SWINGING THROUGH SOUTHCENTRAL. LIFT ASSOCIATED WITH THIS TROUGH
RESULTED IN A PERIOD OF STEADY RAIN FORMING OVER EAST ANCHORAGE AND
THE MAT-SU VALLEY THIS MORNING...AND IS NOW BEING REPLACED
INSTABILITY SHOWERS FORMING OVER COOK INLET AND MOVING TO THE
NORTHEAST. SNOW CONTINUES TO FALL ABOVE 2000-2500 FT IN THE NORTHERN
SUSITNA VALLEY AND COPPER RIVER BASIN...WITH AN INCH OR TWO OF SLUSHY
ACCUMULATION OBSERVED AT A FEW LOCATIONS. A BROAD RIDGE OF HIGH
PRESSURE TOPPED BY A RELATIVELY ZONAL 140 KT JET REMAINS OVER THE
NORTH PACIFIC AND SOUTHERN BERING SEA. A DISSIPATING FRONT MOVED OVER
THE TOP OF THE RIDGE THIS MORNING...BRINGING LITTLE MORE THAN
SPRINKLES TO THE PRIBILOF ISLANDS THIS MORNING. MEANWHILE...GUSTY
WINDS ASSOCIATED WITH THE REMNANTS OF A FORMER TROPICAL SYSTEM
WEAKENING OVER THE KAMCHATKA PENINSULA OF RUSSIA ARE DIMINISHING.

.MODEL DISCUSSION...
SATELLITE IMAGERY SHOWS A COMPLEX LOW DEVELOPING DEEP IN THE BASE OF
THE LONGWAVE TROUGH OVER THE NORTHEAST PACIFIC. THERE ARE MULTIPLE
UPPER LEVEL WAVES COMBINING AT THIS MOMENT...AND THE MODELS ALL AGREE
THAT EVENTUALLY THIS SYSTEM WILL GET MORE ORGANIZED AND STRENGTHEN AS
IT HEADS TOWARD THE SOUTHERN PANHANDLE OVER THE NEXT 24-36 HOURS. THE
MODELS HAVE ALL SHOWED A FASTER/FURTHER NORTH TRACK WITH THE LOW ONCE
IT DEVELOPS...WHICH IS NOT SURPRISING CONSIDERING THE STRONG 120 KT
SOUTH-TO-NORTH JET THAT WILL BE CLIMBING OUT OF THIS TROUGH. THE NAM
IS A NOTABLE OUTLIER COMPARED TO THE OTHER MODELS...LAGGING BEHIND
THE CONSENSUS...AND WAS REMOVED FROM CONSIDERATION FOR THE AFTERNOON
FORECAST. MEANWHILE...MODELS ALSO CONTINUE TO STRUGGLE WITH THE
TIMING AND INTENSITY OF THE LOW THAT WILL DEVELOP OVER THE SOUTHERN
BERING SEA ON FRIDAY MORNING. THERE IS BETTER AGREEMENT THAN
YESTERDAY...ESPECIALLY AT THE UPPER LEVELS...BUT THE AMOUNT OF COLD
AIR ENTRAINED BY THE SYSTEM IS NOT IN GOOD AGREEMENT AND IS HAVING AN
IMPACT ON HOW STRONG THE SURFACE LOW (AND RESULTANT WIND FIELD) WILL
BECOME. THE ECMWF IS PULLING IN THE MOST COLD AND AS A RESULT HAS THE
STRONGEST SURFACE LOW. MEANWHILE THE NAM IS ON THE OTHER END OF THE
SPECTRUM. UNTIL SOME BETTER MODEL AGREEMENT DEVELOPS...WILL STICK
WITH THE GFS SOLUTION WHICH IS CLOSE TO THE INHERITED GRIDS.

.SHORT TERM FORECAST...
SOUTHCENTRAL...WIDESPREAD PRECIPITATION ASSOCIATED WITH THE UPPER
SHORTWAVE WILL CONTINUE TO END FROM WEST TO EAST TONIGHT...WITH THE
COPPER RIVER BASIN AND VALDEZ/CORDOVA THAT LAST PLACES TO SEE DRYING
CONDITIONS. CONVECTIVE SHOWERS OVER UPPER COOK INLET WILL ALSO
DISSIPATE THIS EVENING AS WEAK SUBSIDENCE ALOFT GRADUALLY SPREADS
INTO THE REGION FROM THE WEST. CLOUDS WILL BE A BIT SLOWER TO
CLEAR...AND LINGER ON WEST-FACING MOUNTAIN RANGES THE LONGEST...BUT
WILL EVENTUALLY YIELD TO INCREASING SUNSHINE ON THURSDAY. MANY PLACES
WILL SEE THE COLDEST TEMPERATURES OF THE SEASON SO FAR ON THURSDAY
NIGHT...WITH LOCATIONS AS FAR SOUTH AS THE KENAI PENINSULA DROPPING
BELOW FREEZING BY FRIDAY MORNING.

SOUTHWEST...DRY NORTHWEST FLOW WILL PREVAIL OVER MOST OF THE AREA
THROUGH THE END OF THE WEEK. THE BERING SEA STORM WILL PASS TO THE
SOUTH OF THE AREA...WITH CLOUDINESS AND SLIGHT RAIN CHANCES CONFINED
LARGELY TO THE COAST. OVERNIGHT TEMPERATURES WILL CONTINUE NEAR OR
SLIGHTLY BELOW NORMAL...WITH TEMPERATURES DROPPING EASILY INTO THE
20S OVER INTERIOR AREAS.

BERING SEA AND ALEUTIANS...MORE ACTIVE WEATHER RETURNS TO THE REGION
THURSDAY NIGHT AS A STRONG LOW DEVELOPS WITH GOOD JET SUPPORT AND
SOME COLD AIR FILTERING DOWN THROUGH THE BERING STRAIT. MOST ALEUTIAN
LOCATIONS WILL SEE RAIN AND GUSTY WINDS AS THIS STORM GOES PAST. WITH
THE EXPECTED STORM TRACK AS WELL AS THE VERY FAST FORWARD SPEED OF
THE STORM ITSELF...EXPECT THE EASTERN ALEUTIANS WILL SEE STRONGER
WINDS THAN OTHER AREAS. AT THIS POINT THIS WILL LIKELY HAPPEN FRIDAY
AFTERNOON AND EVENING WITH STRONG WINDS BLOWING FROM THE WEST.

.LONG TERM FORECAST...
THE LONG RANGE MODELS ARE BEGINNING TO SUGGEST THAT THE DEEP LONGWAVE
TROUGH WILL RETROGRADE WESTWARD TO THE BERING SEA BY THE MIDDLE OF
NEXT WEEK. THIS SUGGEST SOUTHERN ALASKA COULD TRANSITION RETURN TO A
SLIGHTLY WARMER AND WETTER PATTERN FOR MOST AREAS...WHILE THE ACTIVE
STORM TRACK AND UNSETTLED WEATHER WOULD SHIFT BACK TO THE BERING SEA
REGION.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...GALE 130
FIRE WEATHER...NONE

AMD SEP 13

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 18, 4:00 PM AKDTGale WarningAFC60 hr
Sep 18, 4:00 PM AKDTGale WarningAFC60 hr
Sep 18, 4:00 PM AKDTSmall Craft AdvisoryAFC48 hr
Sep 18, 4:00 PM AKDTSmall Craft AdvisoryAFC48 hr
Sep 19, 4:00 AM AKDTGale WarningAFC36 hr
Sep 19, 4:00 AM AKDTSmall Craft AdvisoryAFC36 hr
Sep 19, 4:00 AM AKDTSmall Craft AdvisoryAFC12 hr
Sep 19, 3:59 PM AKDTFreeze WarningAFC17 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.