Alert archive / Alaska / Gale Warnings in 2013

Gale Warning 535, NWS Anchorage, AK

September 20, 2013

NWS Anchorage, AK issued this gale warning at Sep 20, 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 20, 2013, 4:00 AM AKDT (12:00 UTC)
Expired
Sep 22, 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.

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.  

$$
4 follow-up statements
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.  

$$
888 
FZAK62 PAFC 220007
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 PM 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.

PKZ499-221500-
400 PM AKDT SAT SEP 21 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 996 MB LOW NEAR 56N 166E WILL DRIFT TO 57N 168E SUN AFTERNOON. 
THIS LOW WILL THEN MOVE TO 53N 169E AT 996 MB MON AFTERNOON. A
STRENGTHENING 990 MB LOW WILL MOVE TO 48N 177W MON AFTERNOON.
$$

PKZ411-221500-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 PM AKDT SAT SEP 21 2013

.TONIGHT...S WIND 20 TO 30 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.SUN...S WIND 30 KT. SEAS 10 FT. RAIN.
.SUN NIGHT...SW WIND 25 KT. SEAS 8 FT. PATCHY FOG. RAIN.
.MON...E WIND 20 KT. SEAS 7 FT. 
.MON NIGHT...N WIND 30 KT. SEAS 10 FT. 
.TUE...NW WIND 35 KT. SEAS 11 FT. 
.WED...SW WIND 35 KT. SEAS 17 FT. 
.THU...W WIND 25 KT. SEAS 15 FT.  

$$

PKZ412-221500-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 PM AKDT SAT SEP 21 2013

.TONIGHT...N WIND 25 KT BECOMING SW 20 KT AFTER MIDNIGHT. SEAS 9 FT.
PATCHY FOG. RAIN.
.SUN...S WIND 25 KT. SEAS 8 FT. PATCHY FOG. RAIN.
.SUN NIGHT...SE WIND 25 KT. SEAS 8 FT. PATCHY FOG. RAIN.
.MON...SE WIND 20 KT. SEAS 7 FT. 
.MON NIGHT...NE WIND 40 KT. SEAS 12 FT. 
.TUE...N WIND 45 KT. SEAS 18 FT. 
.WED...SW WIND 35 KT. SEAS 15 FT. 
.THU...W WIND 25 KT. SEAS 16 FT.  

$$

PKZ413-221500-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 PM AKDT SAT SEP 21 2013

.TONIGHT...SW WIND 25 KT. SEAS 7 FT. PATCHY FOG. RAIN.
.SUN...S WIND 30 KT. SEAS 9 FT. PATCHY FOG. RAIN.
.SUN NIGHT...SW WIND 25 KT. SEAS 8 FT. RAIN.
.MON...SE WIND 20 KT. SEAS 7 FT. 
.MON NIGHT...NE WIND 40 KT. SEAS 12 FT. 
.TUE...NW WIND 45 KT. SEAS 17 FT. 
.WED...SW WIND 35 KT. SEAS 17 FT. 
.THU...W WIND 30 KT. SEAS 16 FT.  

$$

PKZ414-221500-
BERING SEA OFFSHORE EAST OF 171W
400 PM AKDT SAT SEP 21 2013

...GALE WARNING TONIGHT...

.TONIGHT...NW WIND 35 KT. SEAS 13 FT. 
.SUN...W WIND 30 KT. SEAS 9 FT. PATCHY FOG. 
.SUN NIGHT...SW WIND 20 KT. SEAS 7 FT. PATCHY FOG. RAIN.
.MON...S WIND 20 KT. SEAS 7 FT. 
.MON NIGHT...SE WIND 40 KT. SEAS 12 FT. 
.TUE...N WIND 40 KT. SEAS 16 FT. 
.WED AND THU...W WIND 30 KT. SEAS 14 FT.  

$$
948 
FZAK62 PAFC 221149
OFFALU

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT SUN SEP 22 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.

PKZ499-230300-
400 AM AKDT SUN SEP 22 2013
.SYNOPSIS FOR CENTRAL BERING SEA...
A 994 MB LOW NEAR 56N 169E WILL MAINTAIN STRENGTH AND DRIFT TO NEAR
57N 174E EARLY MON MORNING...THEN MOVE TO NEAR 54N 172E AT 996 MB 
AND DISSIPATE MON AFTERNOON. A STRENGTHENING NORTH PACIFIC LOW WILL
MOVE TO NEAR 50N 177W AT 988 MB MON AFTERNOON...THEN MOVE TO NEAR 
53N 174W AT 970 MB BY EARLY TUE MORNING.
$$

PKZ411-230300-
BERING SEA OFFSHORE WEST OF 180 AND EAST OF THE INTERNATIONAL
DATELINE
400 AM AKDT SUN SEP 22 2013

.TODAY...S WIND 30 KT. SEAS 10 FT. PATCHY FOG. RAIN.
.TONIGHT...SW WIND 25 KT. SEAS 9 FT. PATCHY FOG. RAIN.
.MON...SW WIND 15 KT BECOMING N 20 KT IN THE AFTERNOON. SEAS 8 FT.
RAIN.
.MON NIGHT...N WIND 35 KT. SEAS 10 FT. 
.TUE...NW WIND 40 KT. SEAS 12 FT. 
.WED...SW WIND 40 KT. SEAS 15 FT. 
.THU...W WIND 40 KT. SEAS 15 FT.  

$$

PKZ412-230300-
BERING SEA OFFSHORE 171W TO 180 AND NORTH OF 56N
400 AM AKDT SUN SEP 22 2013

.TODAY...S WIND 25 KT. SEAS 7 FT. PATCHY FOG. RAIN.
.TONIGHT...SE WIND 25 KT. SEAS 8 FT. PATCHY FOG. RAIN.
.MON...S WIND 20 KT BECOMING NE 20 KT IN THE AFTERNOON. SEAS 7 FT.
PATCHY FOG. RAIN.
.MON NIGHT...NE WIND 35 KT. SEAS 10 FT. 
.TUE...N WIND 45 KT. SEAS 15 FT. 
.WED...SW WIND 30 KT. SEAS 10 FT. 
.THU...W WIND 35 KT. SEAS 13 FT.  

$$

PKZ413-230300-
BERING SEA OFFSHORE 171W TO 180 AND SOUTH OF 56N
400 AM AKDT SUN SEP 22 2013

.TODAY...S WIND 25 KT. SEAS 9 FT. PATCHY FOG. RAIN.
.TONIGHT...SW WIND 25 KT. SEAS 9 FT. PATCHY FOG. RAIN.
.MON...SE WIND 20 KT. SEAS 7 FT. PATCHY FOG. 
.MON NIGHT...NE WIND 40 KT. SEAS 10 FT. 
.TUE...NW WIND 45 KT. SEAS 17 FT. 
.WED...SW WIND 35 KT. SEAS 14 FT. 
.THU...W WIND 40 KT. SEAS 15 FT.  

$$

PKZ414-230300-
BERING SEA OFFSHORE EAST OF 171W
400 AM AKDT SUN SEP 22 2013

.TODAY...W WIND 20 TO 30 KT BECOMING S 15 KT IN THE AFTERNOON. SEAS
10 FT. RAIN.
.TONIGHT...SW WIND 20 KT. SEAS 7 FT. PATCHY FOG. RAIN.
.MON...S WIND 20 KT. SEAS 7 FT. PATCHY FOG. 
.MON NIGHT...SE WIND 35 KT. SEAS 10 FT. 
.TUE...NE WIND 40 KT. SEAS 14 FT. 
.WED...W WIND 35 KT. SEAS 13 FT. 
.THU...W WIND 40 KT. SEAS 13 FT.  

$$

JM

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 19, 2:00 PM AKDT, 14 hours earlier.

Area forecast discussion, Sep 19, 2:00 PM AKDT, 14 hours before
SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
200 PM AKDT THU SEP 19 2013

.ANALYSIS AND UPPER LEVELS...
ALOFT...A DEEP UPPER TROUGH REMAINS OVER THE MAINLAND PORTION OF THE
STATE WITH AN ANCHOR LOW REMAINING IN PLACE OVER INTERIOR ALASKA. A
BROAD RIDGE REMAINS IN PLACE OVER THE NORTH PACIFIC AND SOUTHERN
BERING SEA WITH A STRONG 150+ KT JET STREAM FLOWING OVER THE TOP AND
TURNING SOUTHWARD INTO THE BASE OF THE LONGWAVE TROUGH. MEANWHILE AT
THE LOWER LEVELS...A LOW SOUTH OF THE PANHANDLE IS MOVING NORTHWARD
AND STRENGTHENING RAPIDLY WITH THE HELP OF A 120 KT JET STREAK COMING
UP OUT OF THE LONGWAVE TROUGH. SATELLITE IMAGERY SHOWS THE
CIRCULATION STARTING TO BECOME ELONGATED TO THE NORTH. OVER
SOUTHCENTRAL...A SHORTWAVE TROUGH OVERNIGHT CAUSED CLOUDS AND RAIN
SHOWERS TO LINGER AROUND COOK INLET THROUGH THE MORNING HOURS...BUT
HAS NOW MOVED TO THE EAST ALLOWING SUNSHINE TO BREAK OUT IN A MAJOR
WAY FROM THE WESTERN KENAI TO ANCHORAGE. LOW CLOUDS AND LIGHT RAIN
AND SNOW SHOWERS CONTINUE ACROSS THE COPPER RIVER BASIN. OUT
WEST...HIGH CLOUDS AND RELATIVELY BENIGN WEATHER PREVAIL ACROSS THE
BERING SEA REGION...THOUGH A NEW LOW IS BEGINNING TO FORM SOUTHWEST
OF THE WESTERN ALEUTIANS.

.MODEL DISCUSSION...
MODELS SEEM TO BE LOCKING INTO A SYNOPTIC SOLUTION FOR BOTH OF THE
STRONG STORMS THAT WILL AFFECT THE FORECAST AREA THROUGH THE WEEKEND.
THE LOW MOVING UP TOWARD THE PANHANDLE IS EXPECTED TO REACH PEAK
INTENSITY THIS EVENING AROUND 971 MB. WHILE ALL MODELS SHOW A SIMILAR
SOLUTION THE NAM WAS A BIT SOUTH AND EAST OF THE GFS/EC/GEM CONSENSUS
WITH THE TRACK OF THE SURFACE LOW AND WAS REMOVED FROM CONSIDERATION
IN THE AFTERNOON FORECAST. THE MORE IMPACTFUL STORM FOR OUR FORECAST
AREA WILL BE THE LOW DEVELOPING NEAR THE WESTERN ALEUTIANS THAT WILL
CROSS THE BERING AND REACH THE GULF BY SATURDAY MORNING. HERE AGAIN
THE 12Z NAM IS A NOTABLE OUTLIER...KEEPING A GOOD PORTION OF THE
STORM ALONG OR SOUTH OF THE ALEUTIAN CHAIN. THIS SCENARIO IS NOT
SUPPORTED BY THE OTHER MODELS AND LIKELY STEMS FROM A MUCH WEAKER
SUPPORTING UPPER LEVEL WAVE THAN THE OTHER MODELS HAVE ALL SHOWN FOR
SEVERAL DAYS. HERE AGAIN THE NAM WAS EXCLUDED.

.SHORT TERM FORECAST...
SOUTHCENTRAL...SKIES ARE FINALLY CLEARING AROUND COOK INLET...A TREND
THAT SHOULD CONTINUE TO SPREAD TO THE NORTH AND EAST THROUGHOUT THE
EVENING HOURS. THE SHORTWAVE TROUGH THAT MOVED THROUGH COOK INLET
EARLIER IS DISSIPATING AND IS HEADED OFF TO THE EAST...THOUGH THE NEW
MODEL RUNS ARE SUGGESTING ANOTHER TROUGH WILL MOVE THROUGH UPPER COOK
INLET LATE THIS EVENING BEFORE AMPLIFYING OVER THE COPPER RIVER BASIN
TOWARD MORNING. THINKING AT THIS TIME IS THAT THE ATMOSPHERE SHOULD
BE SUFFICIENTLY DRY FROM THE WESTERN KENAI TO ANCHORAGE AND THE
MAT-SU TO PREVENT A REPEAT OF THE SHOWERS THAT OCCURRED THIS
MORNING...BUT NORTHERN SECTIONS OF THE COPPER RIVER BASIN WILL LIKELY
STILL HAVE ENOUGH RESIDUAL LOW-LEVEL MOISTURE TO ALLOW SOME AREAS OF
RAIN/SNOW TO DEVELOP YET AGAIN...ESPECIALLY AT HIGHER ELEVATIONS.
OTHERWISE...THE COLDEST NIGHT OF THE SEASON SO FAR LOOKS INCREASINGLY
LIKELY TONIGHT AS MUCH OF ANCHORAGE AND THE WESTERN KENAI WILL DROP
TO NEAR OR BELOW FREEZING TONIGHT AND AGAIN ON FRIDAY NIGHT. WITH
RECENT RAINFALL THERE MAY ALSO BE SOME LOCALIZED FOG THAT DEVELOPS
AROUND KNIK ARM TOWARD BUTTE TONIGHT WHERE NORTHERLY WINDS ARE THE
LIGHTEST.

SOUTHWEST...BENIGN NORTHWESTERLY FLOW WILL BECOME MORE NORTHEASTERLY
AND OFFSHORE BY FRIDAY EVENING AS THE STRONG BERING LOW PASSES SOUTH
OF THE MAINLAND. COASTAL SECTIONS OF THE BRISTOL BAY ZONE AND ALASKA
PENINSULA WILL SEE MUCH MORE IN THE WAY OF RAINFALL...THOUGH PRECIP
MAY SPREAD FAR ENOUGH INLAND TO PRODUCE A BIT OF MIXED RAIN/SNOW OVER
INTERIOR PORTIONS OF BRISTOL BAY BEFORE THE LOW MOVES INTO THE GULF
ON SATURDAY.

BERING SEA AND ALEUTIANS...CONFIDENCE IS INCREASING REGARDING DETAILS
OF THE DEVELOPING LOW EXPECTED TO TRACK THROUGH THE SOUTHERN BERING
THROUGH THE END OF THE WEEK. THE STORM WILL BEGIN TO UNDERGO RAPID
INTENSIFICATION THIS EVENING...AND WILL CONTINUE TO GET STRONGER AS
IT TRACKS ALL THE WAY TO THE GULF BY SATURDAY. PRIMARY THREAT FROM
THIS STORM WILL BE STRONGER WINDS THAN HAVE BEEN EXPERIENCED IN A
WHILE...WITH THE VERY FAST STORM MOVEMENT EXAGGERATING WINDS THAT
WILL ALREADY BE STRONG ON THE BACKSIDE OF THE LOW. STRONGEST WINDS
WILL OCCUR FRIDAY AFTERNOON AND EVENING FROM ATKA TO DUTCH HARBOR.
WHILE THESE WINDS SHOULD NOT APPROACH WARNING LEVEL...GUSTS
APPROACHING 60 MPH LOOK INCREASINGLY LIKELY. VIRTUALLY ALL AREAS WILL
ALSO SEE A PERIOD OF HEAVY RAIN ASSOCIATED WITH THIS STORM...BUT DUE
TO THE RAPID STORM MOVEMENT THIS SHOULD BE RELATIVELY SHORT-LIVED AT
MOST LOCATIONS.

.LONG TERM FORECAST...
LONG RANGE MODELS CONTINUE TO SHOW THE LONGWAVE TROUGH OVER THE
MAINLAND RETROGRADING BY EARLY NEXT WEEK BEFORE BREAKING DOWN INTO A
MOVE PROGRESSIVE PATTERN BY MIDWEEK. CONFIDENCE IS LOW IN SPECIFIC
FEATURES...BUT A SLIGHT WARMUP BACK TO MORE SEASONABLE TEMPERATURES
LOOKS FAIRLY LIKELY FOR MUCH OF THE MAINLAND AS THE STORM TRACK
SHIFTS BACK TO THE BERING SEA.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...NONE
MARINE...GALE 130 155 170 171  172 175
FIRE WEATHER...NONE

AMD SEP 13

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 19, 4:00 PM AKDTGale WarningAFC12 hr
Sep 19, 4:00 PM AKDTSmall Craft AdvisoryAFC12 hr
Sep 19, 4:00 PM AKDTSmall Craft AdvisoryAFC24 hr
Sep 20, 4:00 AM AKDTGale WarningAFC48 hr
Sep 20, 4:00 AM AKDTGale WarningAFC4 days
Sep 20, 4:00 AM AKDTGale WarningAFC6 days
Sep 20, 4:00 AM AKDTSmall Craft AdvisoryAFC36 hr
Sep 20, 4:00 AM AKDTStorm WarningAFC36 hr
Sep 20, 4:00 AM AKDTStorm WarningAFC36 hr
Sep 20, 11:09 AM AKDTHigh Wind WatchAFC18 hr
Sep 20, 11:09 AM AKDTHigh Wind WarningAFC11 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.