Alert archive / Alaska / Storm Warnings in 2015

Storm Warning 74, NWS Anchorage, AK

May 20, 2015

NWS Anchorage, AK issued this storm warning at May 20, 2015, 3:01 PM AKDT. It was in force for 12 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
May 20, 2015, 3:01 PM AKDT (23:01 UTC)
Expired
May 21, 2015, 3:29 AM AKDT
In force
12 hr
Issued by
NWS Anchorage, AK

The text

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

966 
FZAK52 PAFC 202301
CWFALU

COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
301 PM AKDT WED MAY 20 2015

COASTAL WATERS FORECAST FOR SOUTHWEST ALASKA+BRISTOL BAY+THE
ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS UP TO 100 NM OUT.

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.

PKZ199-211230-
301 PM AKDT WED MAY 20 2015
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...A FRONT IN THE CENTRAL
BERING WILL QUICKLY DISSIPATE WED NIGHT. THE 981 MB REMNANTS OF
TYPHOON DOLPHIN 525 NM SOUTHWEST OF SHEMYA THU MORNING WILL MOVE
TO 200 NM WEST OF SHEMYA AT 962 MB THU AFTERNOON...THEN REACH
PEAK INTENSITY AT 956 MB 100 NM NORTHWEST OF SHEMYA FRI MORNING.

$$

PKZ150-211230-
SOUTH OF THE AK PENINSULA SITKINAK TO CASTLE CAPE-
301 PM AKDT WED MAY 20 2015

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...SE WIND 25 KT EXCEPT SE 15 KT W OF CHIRIKOF ISLAND.
SEAS 10 FT. RAIN.
.THU...SE WIND 15 KT. SEAS 9 FT. RAIN.
.THU NIGHT...E WIND 20 KT. SEAS 7 FT. RAIN.
.FRI...E WIND 25 KT. SEAS 8 FT.
.FRI NIGHT...S WIND 25 KT. SEAS 9 FT.
.SAT...S WIND 30 KT. SEAS 10 FT.
.SUN THROUGH MON...S WIND 15 KT. SEAS 9 FT.

$$

PKZ155-211230-
SOUTH OF THE AK PENINSULA CASTLE CAPE TO CAPE SARICHEF-
301 PM AKDT WED MAY 20 2015

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...SE WIND 15 KT. SEAS 9 FT. PATCHY FOG.
.THU...VARIABLE WIND 10 KT. SEAS 8 FT.
.THU NIGHT...NE WIND 15 KT. SEAS 6 FT.
.FRI...SE WIND 20 KT. SEAS 6 FT.
.FRI NIGHT...S WIND 30 KT. SEAS 11 FT.
.SAT...S WIND 30 KT. SEAS 13 FT.
.SUN THROUGH MON...S WIND 20 KT. SEAS 12 FT.

$$

PKZ160-211230-
BRISTOL BAY-
301 PM AKDT WED MAY 20 2015

.TONIGHT...SE WIND 20 KT. GUSTS TO 30 KT OUT OF BAYS AND PASSES IN
THE EVENING. SEAS 3 FT.
.THU...SE WIND 10 KT. SEAS 2 FT.
.THU NIGHT...E WIND 15 KT. SEAS 3 FT. PATCHY FOG.
.FRI AND FRI NIGHT...SE WIND 25 KT. SEAS 5 FT.
.SAT...SE WIND 30 KT. SEAS 6 FT.
.SUN THROUGH MON...SE WIND 15 KT. SEAS 4 FT.

$$

PKZ165-211230-
PORT HEIDEN TO CAPE SARICHEF-
301 PM AKDT WED MAY 20 2015

.TONIGHT...S WIND 15 KT. SEAS 2 FT. PATCHY FOG.
.THU...NW WIND 15 KT EXCEPT VARIABLE 10 KT FROM PORT MOLLER E.
SEAS 4 FT.
.THU NIGHT...NE WIND 15 KT. SEAS 4 FT. PATCHY FOG.
.FRI...SE WIND 25 KT. SEAS 4 FT.
.FRI NIGHT...SE WIND 30 KT. SEAS 7 FT.
.SAT...S WIND 30 KT. SEAS 7 FT.
.SUN THROUGH MON...SE WIND 20 KT. SEAS 8 FT.

$$

PKZ170-211230-
CAPE SARICHEF TO NIKOLSKI BERING SIDE-
301 PM AKDT WED MAY 20 2015

...SMALL CRAFT ADVISORY THURSDAY NIGHT...

.TONIGHT...NW WIND 20 KT. SEAS BUILDING TO 7 FT.
.THU...NW WIND 15 KT. SEAS 7 FT.
.THU NIGHT...E WIND 15 KT BECOMING SE 25 KT AFTER MIDNIGHT. SEAS
5 FT.
.FRI...SE WIND 35 KT. SEAS 9 FT.
.FRI NIGHT...S WIND 30 KT. SEAS 9 FT.
.SAT THROUGH MON...S WIND 25 KT. SEAS 10 FT.

$$

PKZ171-211230-
UNALASKA BAY-
301 PM AKDT WED MAY 20 2015

.TONIGHT...NW WIND TO 15 KT. SEAS 2 FT BUILDING TO 5 FT AFTER
MIDNIGHT.
.THU...NW WIND 15 KT BECOMING N IN THE AFTERNOON. SEAS 5 FT
SUBSIDING TO 3 FT IN THE AFTERNOON.
.THU NIGHT...VARIABLE WIND LESS THAN 10 KT BECOMING SE 10 KT AFTER
MIDNIGHT. SEAS 3 FT.
.FRI AND FRI NIGHT...SE WIND 25 KT. SEAS 4 FT.
.SAT THROUGH MON...S WIND 20 KT. SEAS 3 FT.

$$

PKZ172-211230-
CAPE SARICHEF TO NIKOLSKI PACIFIC SIDE-
301 PM AKDT WED MAY 20 2015

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NW WIND 20 KT. SEAS 8 FT.
.THU...N WIND 20 KT. SEAS 8 FT.
.THU NIGHT...VARIABLE WIND 10 KT BECOMING SE 20 KT AFTER MIDNIGHT.
SEAS 6 FT.
.FRI AND FRI NIGHT...S WIND 30 KT. SEAS 12 FT.
.SAT THROUGH MON...S WIND 25 KT. SEAS 15 FT.

$$

PKZ173-211230-
NIKOLSKI TO SEGUAM ISLAND BERING SIDE-
301 PM AKDT WED MAY 20 2015

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...NW WIND 30 KT. SEAS 10 FT SUBSIDING TO 6 FT TOWARD
MORNING.
.THU...VARIABLE WIND 10 KT BECOMING S 20 KT IN THE AFTERNOON. SEAS
6 FT.
.THU NIGHT...S WIND 30 KT INCREASING TO 40 KT AFTER MIDNIGHT. SEAS
7 FT BUILDING TO 12 FT AFTER MIDNIGHT.
.FRI...SE WIND 40 KT. SEAS 15 FT.
.FRI NIGHT...SW WIND 25 KT. SEAS 11 FT.
.SAT...SW WIND 30 KT. SEAS 14 FT.
.SUN...SW WIND 25 KT. SEAS 13 FT.
.MON...S WIND 25 KT. SEAS 9 FT.

$$

PKZ174-211230-
NIKOLSKI TO SEGUAM ISLAND PACIFIC SIDE-
301 PM AKDT WED MAY 20 2015

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...NW WIND 30 KT. SEAS 11 FT SUBSIDING TO 7 FT TOWARD
MORNING.
.THU...NW WIND 15 KT BECOMING SW IN THE AFTERNOON. SEAS 7 FT.
.THU NIGHT...S WIND 30 KT INCREASING TO 40 KT AFTER MIDNIGHT. SEAS
7 FT BUILDING TO 11 FT AFTER MIDNIGHT.
.FRI...S WIND 40 KT. SEAS 16 FT.
.FRI NIGHT...SW WIND 25 KT. SEAS 15 FT.
.SAT...SW WIND 30 KT. SEAS 20 FT.
.SUN THROUGH MON...S WIND 25 KT. SEAS 16 FT.

$$

PKZ175-211230-
SEGUAM ISLAND TO ADAK BERING SIDE-
301 PM AKDT WED MAY 20 2015

...STORM WARNING THURSDAY NIGHT...

.TONIGHT...NW WIND 20 KT. SEAS 9 FT.
.THU...S WIND 20 KT INCREASING TO 40 KT IN THE AFTERNOON. SEAS 5
FT BUILDING TO 8 FT IN THE AFTERNOON.
.THU NIGHT...SE WIND 50 KT. SEAS 16 FT. PATCHY FOG. RAIN.
.FRI...S WIND 40 KT. SEAS 15 FT.
.FRI NIGHT...SW WIND 30 KT. SEAS 12 FT.
.SAT...SW WIND 35 KT. SEAS 14 FT.
.SUN...SW WIND 25 KT. SEAS 11 FT.
.MON...S WIND 20 KT. SEAS 6 FT.

$$

PKZ176-211230-
SEGUAM ISLAND TO ADAK PACIFIC SIDE-
301 PM AKDT WED MAY 20 2015

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...NW WIND 25 KT BECOMING W 15 KT AFTER MIDNIGHT. SEAS 8
FT.
.THU...SW WIND 20 KT BECOMING S 35 KT IN THE AFTERNOON. SEAS 5 FT
BUILDING TO 9 FT IN THE AFTERNOON.
.THU NIGHT...S WIND 45 KT. SEAS 12 FT IN THE EVENING BUILDING TO 18
FT. PATCHY FOG. RAIN.
.FRI...SW WIND 40 KT. SEAS 17 FT.
.FRI NIGHT...SW WIND 35 KT. SEAS 22 FT.
.SAT...SW WIND 40 KT. SEAS 25 FT.
.SUN...SW WIND 25 KT. SEAS 16 FT.
.MON...SW WIND 20 KT. SEAS 14 FT.

$$

PKZ177-211230-
ADAK TO KISKA-
301 PM AKDT WED MAY 20 2015

...STORM WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...W WIND 15 KT BECOMING SW 25 KT AFTER MIDNIGHT. SEAS 6
FT.
.THU...S WIND 35 KT BECOMING SE 50 KT IN THE AFTERNOON. SEAS 8 FT
BUILDING TO 18 FT IN THE AFTERNOON. RAIN.
.THU NIGHT...S WIND 50 KT DIMINISHING TO 40 KT AFTER MIDNIGHT.
SEAS 19 FT. PATCHY FOG. RAIN SHOWERS.
.FRI...SW WIND 40 KT. SEAS 21 FT.
.FRI NIGHT...SW WIND 45 KT. SEAS 26 FT.
.SAT...SW WIND 45 KT. SEAS 26 FT.
.SUN...SW WIND 25 KT. SEAS 12 FT.
.MON...W WIND 15 KT. SEAS 11 FT.

$$

PKZ178-211230-
KISKA TO ATTU-
301 PM AKDT WED MAY 20 2015

...STORM WARNING THURSDAY...

.TONIGHT...S WIND 20 KT INCREASING TO 30 KT AFTER MIDNIGHT.
SEAS BUILDING TO 9 FT. PATCHY FOG. RAIN.
.THU...SE WIND 40 KT INCREASING TO 50 KT IN THE AFTERNOON. SEAS
14 FT BUILDING TO 19 FT IN THE AFTERNOON. PATCHY FOG. RAIN.
.THU NIGHT...S WIND 45 KT. SEAS 23 FT. PATCHY FOG. RAIN SHOWERS.
.FRI AND FRI NIGHT...W WIND 45 KT. SEAS 26 FT.
.SAT...W WIND 45 KT. SEAS 23 FT.
.SUN...SW WIND 20 KT. SEAS 10 FT.
.MON...NW WIND 15 KT. SEAS 9 FT.

$$

PKZ179-211230-
PRIBILOF ISLANDS NEAR SHORE WATERS-
301 PM AKDT WED MAY 20 2015

...SMALL CRAFT ADVISORY TONIGHT AND THURSDAY NIGHT...

.TONIGHT...NW WIND 20 KT. SEAS 8 FT.
.THU...VARIABLE WIND 10 KT. SEAS 5 FT. PATCHY FOG.
.THU NIGHT...SE WIND 20 KT INCREASING TO 30 KT AFTER MIDNIGHT.
SEAS 7 FT. PATCHY FOG.
.FRI...SE WIND 35 KT. SEAS 13 FT.
.FRI NIGHT...SE WIND 30 KT. SEAS 13 FT.
.SAT THROUGH SUN...S WIND 25 KT. SEAS 12 FT.
.MON...SE WIND 20 KT. SEAS 10 FT.

$$

PKZ180-211230-
KUSKOKWIM DELTA AND ETOLIN STRAIT-
301 PM AKDT WED MAY 20 2015

.TONIGHT...S WIND 15 KT. SEAS 4 FT. PATCHY FOG.
.THU...SW WIND 10 KT. SEAS 3 FT. PATCHY FOG.
.THU NIGHT...N WIND 10 KT BECOMING E AFTER MIDNIGHT. SEAS 2 FT.
PATCHY FOG.
.FRI AND FRI NIGHT...SE WIND 25 KT. SEAS 7 FT.
.SAT...SE WIND 30 KT. SEAS 10 FT.
.SUN THROUGH MON...SE WIND 20 KT. SEAS 7 FT.

$$

PKZ181-211230-
NORTH AND WEST OF NUNIVAK ISLAND-
301 PM AKDT WED MAY 20 2015

.TONIGHT...S WIND 20 KT. SEAS 3 FT. PATCHY FOG.
.THU...SW WIND 15 KT. SEAS 2 FT. PATCHY FOG.
.THU NIGHT...VARIABLE WIND 10 KT BECOMING SE 20 KT AFTER MIDNIGHT.
SEAS 2 FT. PATCHY FOG. 
.FRI...SE WIND 30 KT. SEAS 4 FT.
.FRI NIGHT...SE WIND 25 KT. SEAS 4 FT.
.SAT...SE WIND 30 KT. SEAS 5 FT.
.SUN...SE WIND 25 KT. SEAS 4 FT.
.MON...SE WIND 20 KT. SEAS 3 FT.

$$

PKZ185-211230-
SAINT MATTHEW ISLAND WATERS-
301 PM AKDT WED MAY 20 2015

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...W WIND 20 KT. SEAS 6 FT. PATCHY FOG.
.THU...SW WIND 20 KT. SEAS 5 FT.
.THU NIGHT...E OF SAINT MATTHEW ISLAND...SE WIND 25 KT. W OF SAINT
MATTHEW ISLAND...SE WIND 30 KT INCREASING TO 45 KT AFTER MIDNIGHT.
SEAS 7 FT BUILDING TO 11 FT AFTER MIDNIGHT. RAIN AND SNOW.
.FRI...SE WIND 40 KT. SEAS 20 FT.
.FRI NIGHT...E WIND 35 KT. SEAS 18 FT.
.SAT...E WIND 30 KT. SEAS 14 FT.
.SUN...SE WIND 20 KT. SEAS 6 FT.
.MON...SE WIND 15 KT. SEAS 6 FT.

$$
1 follow-up statement
433 
FZAK52 PAFC 211129
CWFALU

COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
329 AM AKDT THU MAY 21 2015

COASTAL WATERS FORECAST FOR SOUTHWEST ALASKA+BRISTOL BAY+THE
ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS UP TO 100 NM OUT.

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.

PKZ199-220030-
329 AM AKDT THU MAY 21 2015
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
THE 979 MB REMNANTS OF TYPHOON DOLPHIN IS 200 NM SOUTHWEST OF
SHEMYA THIS MORNING MOVES 240 NM NORTHWEST OF SHEMYA AT 967 MB FRI
MORNING. THIS LOW MOVES 250 NM NORTHWEST OF ADAK AT 979 MB SAT
AFTERNOON. A FRONT WILL ENTER THE WESTERN BERING SEA THU MORNING
BEFORE MOVING INTO THE EASTERN BERING SEA BY FRI EVENING BEFORE
DISSIPATING BY SATURDAY AFTERNOON.

$$

PKZ150-220030-
SOUTH OF THE AK PENINSULA SITKINAK TO CASTLE CAPE-
329 AM AKDT THU MAY 21 2015

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SE WIND 20 KT. SEAS 9 FT. RAIN SHOWERS.
.TONIGHT...SE WIND 20 KT. SEAS 8 FT. RAIN.
.FRI...SE WIND 30 KT. SEAS 9 FT. RAIN.
.FRI NIGHT...S WIND 30 KT. SEAS 10 FT.
.SAT...S WIND 30 KT. SEAS 11 FT.
.SUN THROUGH MON...S WIND 15 KT. SEAS 9 FT.

$$

PKZ155-220030-
SOUTH OF THE AK PENINSULA CASTLE CAPE TO CAPE SARICHEF-
329 AM AKDT THU MAY 21 2015

.TODAY...VARIABLE WIND 10 KT. SEAS 7 FT.
.TONIGHT...VARIABLE WIND LESS THAN 10 KT EXCEPT SE 15 KT FROM THE
SHUMAGIN ISLANDS E. SEAS 6 FT.
.FRI...S WIND 20 KT. SEAS 6 FT. RAIN.
.FRI NIGHT...S WIND 35 KT. SEAS 14 FT.
.SAT...S WIND 30 KT. SEAS 14 FT.
.SUN THROUGH MON...S WIND 20 KT. SEAS 12 FT.

$$

PKZ160-220030-
BRISTOL BAY-
329 AM AKDT THU MAY 21 2015

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...SE WIND 10 KT BECOMING E IN THE AFTERNOON. SEAS 2 FT.
.TONIGHT...E WIND 15 KT. SEAS 3 FT. PATCHY FOG.
.FRI...E WIND 25 KT. SEAS 5 FT.
.FRI NIGHT...SE WIND 30 KT. SEAS 7 FT.
.SAT...SE WIND 30 KT. SEAS 7 FT.
.SUN THROUGH MON...SE WIND 15 KT. SEAS 4 FT.

$$

PKZ165-220030-
PORT HEIDEN TO CAPE SARICHEF-
329 AM AKDT THU MAY 21 2015

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...VARIABLE WIND UP TO 10 KT. SEAS 5 FT W OF COLD BAY. SEAS
2 FT E OF COLD BAY.
.TONIGHT...E WIND 15 KT. SEAS 4 FT. PATCHY FOG.
.FRI...SE WIND 15 KT EXCEPT 25 KT E OF PORT MOLLER. SEAS 5 FT.
.FRI NIGHT...SE WIND 30 KT. SEAS 8 FT.
.SAT...S WIND 30 KT. SEAS 8 FT.
.SUN THROUGH MON...SE WIND 20 KT. SEAS 8 FT.

$$

PKZ170-220030-
CAPE SARICHEF TO NIKOLSKI BERING SIDE-
329 AM AKDT THU MAY 21 2015

...GALE WARNING FRIDAY...

.TODAY...N WIND 15 KT BECOMING VARIABLE LESS THAN 10 KT IN THE
AFTERNOON. SEAS 7 FT.
.TONIGHT...VARIABLE WIND 10 KT BECOMING S 20 KT AFTER MIDNIGHT. SEAS
5 FT.
.FRI...SE WIND 25 KT EXCEPT 35 KT W OF UNALASKA. SEAS 6 FT EXCEPT 10
FT W OF UNALASKA.
.FRI NIGHT...S WIND 35 KT. SEAS 10 FT.
.SAT...SW WIND 30 KT. SEAS 15 FT.
.SUN THROUGH MON...S WIND 25 KT. SEAS 10 FT.

$$

PKZ171-220030-
UNALASKA BAY-
329 AM AKDT THU MAY 21 2015

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...N WIND 10 KT. SEAS 3 FT.
.TONIGHT...VARIABLE WIND LESS THAN 10 KT BECOMING SE 10 KT AFTER
MIDNIGHT. SEAS 3 FT.
.FRI...SE WIND 25 KT. SEAS 4 FT.
.FRI NIGHT...S WIND 30 KT. SEAS 5 FT.
.SAT...SW WIND 25 KT. SEAS 4 FT.
.SUN THROUGH MON...S WIND 20 KT. SEAS 3 FT.

$$

PKZ172-220030-
CAPE SARICHEF TO NIKOLSKI PACIFIC SIDE-
329 AM AKDT THU MAY 21 2015

...GALE WARNING FRIDAY...

.TODAY...N WIND 20 KT DIMINISHING TO 10 KT IN THE AFTERNOON. SEAS
8 FT SUBSIDING TO 5 FT.
.TONIGHT...VARIABLE WIND 10 KT BECOMING SE 20 KT AFTER MIDNIGHT W
OF UNALASKA. SEAS 5 FT.
.FRI...SE WIND 30 KT INCREASING TO 40 KT IN THE AFTERNOON W OF
UNALASKA. SEAS 7 FT BUILDING TO 11 FT IN THE AFTERNOON W OF
UNALASKA.
.FRI NIGHT...S WIND 35 KT. SEAS 15 FT.
.SAT...SW WIND 30 KT. SEAS 15 FT.
.SUN THROUGH MON...S WIND 25 KT. SEAS 15 FT.

$$

PKZ173-220030-
NIKOLSKI TO SEGUAM ISLAND BERING SIDE-
329 AM AKDT THU MAY 21 2015

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...W WIND 15 KT BECOMING S IN THE AFTERNOON. SEAS 7 FT.
.TONIGHT...S WIND 30 KT BECOMING SE 40 KT AFTER MIDNIGHT. SEAS 7
FT BUILDING TO 12 FT AFTER MIDNIGHT.
.FRI...SE WIND 45 KT. SEAS 16 FT. RAIN.
.FRI NIGHT...SW WIND 30 KT. SEAS 12 FT.
.SAT...SW WIND 35 KT. SEAS 18 FT.
.SUN...SW WIND 25 KT. SEAS 13 FT.
.MON...S WIND 25 KT. SEAS 9 FT.

$$

PKZ174-220030-
NIKOLSKI TO SEGUAM ISLAND PACIFIC SIDE-
329 AM AKDT THU MAY 21 2015

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...NW WIND 20 KT BECOMING S IN THE AFTERNOON. SEAS 7 FT.
.TONIGHT...S WIND 30 KT INCREASING TO 40 KT AFTER MIDNIGHT. SEAS
7 FT BUILDING TO 11 FT AFTER MIDNIGHT.
.FRI...SE WIND 40 KT. SEAS 17 FT. RAIN.
.FRI NIGHT...SW WIND 30 KT. SEAS 16 FT.
.SAT...SW WIND 30 KT. SEAS 18 FT.
.SUN THROUGH MON...S WIND 25 KT. SEAS 16 FT.

$$

PKZ175-220030-
SEGUAM ISLAND TO ADAK BERING SIDE-
329 AM AKDT THU MAY 21 2015

...GALE WARNING THROUGH FRIDAY...

.TODAY...S WIND 25 KT INCREASING TO 40 KT IN THE AFTERNOON W OF
ATKA. SEAS 9 FT. RAIN.
.TONIGHT...SE WIND 45 KT. SEAS 15 FT. RAIN.
.FRI...S WIND 45 KT BECOMING SW 25 KT IN THE AFTERNOON. SEAS 15
FT. RAIN.
.FRI NIGHT...SW WIND 30 KT. SEAS 11 FT.
.SAT...SW WIND 35 KT. SEAS 19 FT.
.SUN...SW WIND 25 KT. SEAS 11 FT.
.MON...S WIND 20 KT. SEAS 6 FT.

$$

PKZ176-220030-
SEGUAM ISLAND TO ADAK PACIFIC SIDE-
329 AM AKDT THU MAY 21 2015

...GALE WARNING THROUGH FRIDAY...

.TODAY...SW WIND 20 KT BECOMING S 35 KT IN THE AFTERNOON W OF ATKA.
SEAS 9 FT. RAIN.
.TONIGHT...S WIND 45 KT. SEAS 19 FT. RAIN.
.FRI...S WIND 40 KT BECOMING SW 30 KT IN THE AFTERNOON. SEAS 18
FT. RAIN.
.FRI NIGHT...W WIND 35 KT. SEAS 18 FT.
.SAT...SW WIND 35 KT. SEAS 21 FT.
.SUN...SW WIND 25 KT. SEAS 16 FT.
.MON...SW WIND 20 KT. SEAS 14 FT.

$$

PKZ177-220030-
ADAK TO KISKA-
329 AM AKDT THU MAY 21 2015

...STORM WARNING THROUGH TONIGHT...

.TODAY...S WIND 25 KT BECOMING SE 50 KT IN THE AFTERNOON. SEAS 10
FT BUILDING TO 18 FT IN THE AFTERNOON. RAIN.
.TONIGHT...S WIND 50 KT DIMINISHING TO SW 25 KT AFTER MIDNIGHT.
SEAS 19 FT. RAIN SHOWERS.
.FRI...W WIND 35 KT. SEAS 16 FT. RAIN.
.FRI NIGHT...SW WIND 45 KT. SEAS 22 FT.
.SAT...W WIND 40 KT. SEAS 23 FT.
.SUN...SW WIND 25 KT. SEAS 12 FT.
.MON...W WIND 15 KT. SEAS 11 FT.

$$

PKZ178-220030-
KISKA TO ATTU-
329 AM AKDT THU MAY 21 2015

...STORM WARNING TODAY...

.TODAY...SE WIND 40 KT BECOMING S 50 KT IN THE AFTERNOON. SEAS
19 FT. RAIN.
.TONIGHT...SW WIND 30 KT. SEAS 18 FT.
.FRI...W WIND 40 KT. SEAS 19 FT. RAIN.
.FRI NIGHT...W WIND 45 KT. SEAS 25 FT.
.SAT...W WIND 45 KT. SEAS 24 FT.
.SUN...SW WIND 20 KT. SEAS 10 FT.
.MON...NW WIND 15 KT. SEAS 9 FT.

$$

PKZ179-220030-
PRIBILOF ISLANDS NEAR SHORE WATERS-
329 AM AKDT THU MAY 21 2015

...SMALL CRAFT ADVISORY TONIGHT AND FRIDAY...

.TODAY...VARIABLE WIND 10 KT BECOMING SE 15 KT IN THE AFTERNOON.
SEAS 5 FT.
.TONIGHT...SE WIND INCREASING TO 25 KT. SEAS 6 FT.
.FRI...SE WIND 30 KT. SEAS 13 FT.
.FRI NIGHT...SE WIND 30 KT. SEAS 14 FT.
.SAT...S WIND 30 KT. SEAS 14 FT.
.SUN...S WIND 25 KT. SEAS 12 FT.
.MON...SE WIND 20 KT. SEAS 10 FT.

$$

PKZ180-220030-
KUSKOKWIM DELTA AND ETOLIN STRAIT-
329 AM AKDT THU MAY 21 2015

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...SW WIND 10 KT IN THE MORNING BECOMING VARIABLE LESS THAN
10 KT. SEAS 3 FT. DENSE FOG.
.TONIGHT...E WIND 10 KT INCREASING TO 15 KT AFTER MIDNIGHT. SEAS
3 FT. DENSE FOG.
.FRI...SE WIND 25 KT. SEAS 6 FT. DENSE FOG. RAIN.
.FRI NIGHT...SE WIND 30 KT. SEAS 8 FT.
.SAT...SE WIND 35 KT. SEAS 10 FT.
.SUN THROUGH MON...SE WIND 20 KT. SEAS 7 FT.

$$

PKZ181-220030-
NORTH AND WEST OF NUNIVAK ISLAND-
329 AM AKDT THU MAY 21 2015

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...SW WIND 15 KT. SEAS 2 FT. AREAS OF FOG.
.TONIGHT...VARIABLE WIND 10 KT BECOMING SE 20 KT AFTER MIDNIGHT.
SEAS 3 FT. AREAS OF FOG.
.FRI...SE WIND 25 KT. SEAS 5 FT. DENSE FOG.
.FRI NIGHT...E WIND 25 KT. SEAS 5 FT.
.SAT...SE WIND 30 KT. SEAS 6 FT.
.SUN...SE WIND 25 KT. SEAS 4 FT.
.MON...SE WIND 20 KT. SEAS 3 FT.

$$

PKZ185-220030-
SAINT MATTHEW ISLAND WATERS-
329 AM AKDT THU MAY 21 2015

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...SW WIND 20 KT. SEAS 6 FT.
.TONIGHT...E OF SAINT MATTHEW ISLAND...SE WIND 25 KT. W OF SAINT
MATTHEW ISLAND...SE WIND 35 KT INCREASING TO 45 KT AFTER MIDNIGHT.
SEAS 12 FT. DENSE FOG FROM SAINT MATTHEW ISLAND E. RAIN AND SNOW.
.FRI...SE WIND 30 KT E OF SAINT MATTHEW ISLAND...SE 45 KT W OF
SAINT MATTHEW ISLAND. SEAS 20 FT. DENSE FOG. RAIN AND SNOW.
.FRI NIGHT...E WIND 40 KT. SEAS 20 FT.
.SAT...E WIND 30 KT. SEAS 13 FT.
.SUN...SE WIND 20 KT. SEAS 6 FT.
.MON...SE WIND 15 KT. SEAS 6 FT.

$$

What forecasters said that day

The local office's own words before this storm 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 storm warning went out at May 20, 4:03 AM AKDT, 10 hours 58 minutes earlier.

Area forecast discussion, May 20, 4:03 AM AKDT, 10 hours 58 minutes before
SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE ANCHORAGE AK
403 AM AKDT WED MAY 20 2015

CORRECTION TO SOUTHCENTRAL FIRE WEATHER DISCUSSION

.ANALYSIS AND UPPER LEVELS...
THE OVERALL WEATHER PATTERN REMAINS VERY SIMILAR TO THAT OF THE
LAST FEW DAYS...WITH STRONG RIDGING STRETCHING INTO THE EASTERN
MAINLAND AND A BROAD LOW OVER THE BERING BRINGING ABUNDANT
MOISTURE TO THE WESTERN MAINLAND. THE BERING LOW IS CENTERED OVER
THE PRIBILOF ISLANDS AND IS BRINGING YET ANOTHER ROUND OF
RAINFALL THROUGHOUT THE SOUTHWEST MAINLAND WITH DIMINISHING
SOUTHEASTERLY WINDS. MOISTURE FROM THIS SYSTEM CAN BE SEEN
STRETCHING AS FAR SOUTH AS 35N...WITH PRECIPITABLE WATER VALUES
OVER 200% TO 45N. THE RIDGING THAT IS KEEPING THE WEATHER MOSTLY
CLEAR AND DRY EAST OF THE ALASKA RANGE NOW STRETCHES FROM THE
NORTHEAST PACIFIC INTO THE EASTERN MAINLAND AND THE PANHANDLE.
WELL OUTSIDE OF THE AOR BUT NOTABLE NONE THE LESS...TYPHOON
DOLPHIN CAN BE SEEN MOVING NORTHEASTWARD OFF THE COAST OF JAPAN.
THIS SYSTEM WILL CONTINUE TRACKING TOWARDS THE WESTERN ALEUTIANS
OVER THE COURSE OF THIS WEEK...AND IS EXPECTED TO BEGIN IMPACTING
THE WESTERN BERING SEA LATE THURSDAY.

&&

.MODEL DISCUSSION...
THE MODELS REMAIN IN VERY GOOD AGREEMENT WITH THE SYNOPTIC SCALE
FEATURES THROUGH THE END OF THE WEEK WHEN THEY CONTINUE TO HAVE
ISSUES AGREEING ON THE INTENSITY OF THE REMNANTS OF TYPHOON
DOLPHIN OVER THE WESTERN BERING. THE GOOD NEWS IS THAT THE MODELS
HAVE COME INTO MUCH BETTER AGREEMENT WITH THE SPEED OF THIS SYSTEM
WITH THE ADDITION OF THE 22/00Z EC...SO FORECAST CONFIDENCE IS
INCREASING IN THE TIMING OF THIS SYSTEM. THEY ALSO HAVE COME INTO
SLIGHTLY BETTER AGREEMENT WITH THE INTENSITY OF THE LOW...BUT THE
EC CONTINUES TO BE A CONSISTENT WEAK OUTLIER...WHILE THE NAM IS
THE SLIGHTLY DEEPER THAN THE GFS/GEM. THE GFS HAS BEEN THE MOST
CONSISTENT WITH THIS SYSTEM...SO IT WAS USED HEAVILY FOR THE
FORECAST PACKAGE TO FURTHER DEEPEN THE LOW. ONE INTERESTING NOTE
FROM THE GFS IS THAT THE GFS ENSEMBLE MEAN ACTUALLY DEEPER THAN
THE LAST TWO OPERATIONAL RUNS (AT TIMES AS MUCH AS 5 TO 6 MB).
WHILE THIS IS ALLOWING FOR HIGHER CONFIDENCE IN A DEEPER SYSTEM
THAN WAS PREVIOUSLY FORECAST...IT MAY NEED TO BE DEEPENED EVEN
FURTHER IF THIS TREND CONTINUES.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA...
HIGH PRESSURE CONTINUES TO DOMINATE THE SOUTHCENTRAL BUT THE
APPROACHING FRONT FROM THE SOUTHWEST IS BRINGING CLOUD COVER OVER
THE WESTERN PORTIONS OF THE SOUTHCENTRAL. HOWEVER...THE FRONT WILL
STALL OVER KODIAK ISLAND AND THE HIGH WILL REMAIN THE DOMINATE
FEATURE FOR THE NEXT COUPLE DAYS. THIS WILL KEEP DIURNAL TRENDS
GOING FOR WINDS WITH SEA BREEZES ALONG COASTAL AREAS. GAP FLOWS
WILL INCREASE THOUGH TODAY ACROSS SOUTHCENTRAL AS THE GULF RIDGE
BUILDS IN ADVANCE OF THE FRONTAL SYSTEM MOVING TOWARD KODIAK
ISLAND. STRONGEST FLOWS ARE EXPECTED ACROSS TURNAGAIN ARM (ESE
WIND)...ALONG THE COPPER RIVER(S WIND). GAP FLOWS SHOULD DIMINISH
TONIGHT AS GRADIENTS RELAX. TEMPERATURES WILL ALSO STAY
WARM...ESPECIALLY FOR PLACES IN THE COPPER RIVER BASIN.

&&

.FIRE WEATHER...
AREAS OF CONCERN ARE EXPANDING THROUGHOUT THE SOUTHCENTRAL AS
AFTERNOON AND EVENING WINDS INCREASE. THE TWO AREAS THAT WILL BE
THE CLOSEST TO CRITICAL LEVELS ARE THE COPPER RIVER BASIN AND TO A
LESSER EXTENT THE KNIK RIVER VALLEY. THE COPPER RIVER STILL
REMAINS THE PRIMARY AREA OF CONCERN THROUGH THU. RH VALUES ARE
EXPECTED TO DIP TO RED FLAG THRESHOLDS THIS AFTERNOON AND SOUTH
WINDS ARE ALSO EXPECTED TO GUST AT LEAST TO 25 MPH ALONG THE
COPPER RIVER. RH VALUES ARE EXPECTED TO RECOVER AND WINDS DIMINISH
BY LATE THIS EVENING. WARM AND DRY CONDITIONS WITH GENERALLY LIGHT
WINDS ARE EXPECTED IN THE COPPER RIVER BASIN THU. HOWEVER
CONDITIONS SHOULD BE SOMEWHAT DRIER AND ALLOW FOR RED FLAG RH
CONDITIONS TO REDEVELOP IN THE AFTERNOON AND EVENING THU. FOR THE
KNIK RIVER VALLEY RH VALUES WILL DROP TO AROUND 30 PERCENT DURING
THE AFTERNOON AND EVENING HOURS THROUGH THU. THE DIFFERENCE TODAY
WILL BE GUSTY SOUTHEAST WINDS AROUND 20 MPH.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (DAYS 1 AND 2)...
THE FRONTAL BOUNDARY WILL STALL OVER THE MAINLAND TODAY ALONG WITH
A DEEP STREAM OF MOISTURE ORIGINATING FROM THE SUBTROPICS. THESE
CONDITIONS WILL FACILITATE A CONTINUATION OF STEADY LIGHT RAIN
OVER MUCH OF THE AREA. STRONG AND DEEP LAYER CROSS BARRIER FLOW IS
TAKING SOME OF THE BITE OUT OF THE RAIN IN THE LEES OF THE
ALEUTIAN RANGE AND THE KILBUCKS BUT PLENTIFUL MOISTURE ALOFT IS
STILL MAKING IT TO THE SURFACE. THE FRONT WILL GRADUALLY WEAKEN
THROUGHOUT THE DAY DIMINISHING GUSTY SOUTHEASTERLY WINDS BY LATE
THIS EVENING. PRECIPITATION WILL ALSO STEADILY LIGHTEN UP DURING
THE OVERNIGHT HOURS INTO THURSDAY HOWEVER WEAK
STABILITY...LINGERING MOISTURE...AND A PERSISTENT JET ALOFT WILL
KEEP SOME AREAS OF LIGHT RAIN AROUND THROUGH THE DAY ON THURSDAY.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (DAYS 1 AND 2)...
THE FRONTAL BOUNDARY HAS MAINLY CLEARED THE BERING SEA...LINGERING
TOWARD THE MAINLAND. CYCLONIC FLOW ALOFT WILL KEEP THE CHANCE FOR
SHOWERS FROM THE CENTRAL TO THE EASTERN BERING WITH PROBABILITIES
DECREASING TODAY AND TOMORROW. THIS EVENING INTO THURSDAY ALL EYES
TURN TO THE APPROACHING REMNANTS AND EXTRATROPICAL TRANSITION OF
TYPHOON DOLPHIN. A SURGE OF TROPICAL AIR WITH THE WARM FRONT AND
RAPIDLY DEEPENING SURFACE PRESSURES WILL BRING A STORM FORCE FRONT
INTO THE WESTERN AND CENTRAL BERING SEA. WIDESPREAD RAIN WILL
ACCOMPANY THE FRONT AS WELL AS SEAS QUICKLY BUILDING THURSDAY
MORNING UP TO TWENTY FEET.

&&

.LONG TERM FORECAST (FRIDAY THROUGH TUESDAY)...
BEGINNING THE EXTENDED FORECAST ON FRIDAY...THE STRONG NORTH EAST
PACIFIC RIDGE EXTENDING INTO NORTHERN ALASKA WILL REMAIN IN
PLACE...WITH THE STRONG REMNANTS OF FORMER TYPHOON DOLPHIN OVER
THE FAR WESTERN BERING. THIS WILL MEAN WARM AND DRY WEATHER ACROSS
SOUTHCENTRAL ALASKA...WITH A REMNANT WEAK FRONTAL ZONE OVER
SOUTHWEST AND THE EASTERN BERING KEEPING CLOUDS AND PRECIPITATION
OVER THAT REGION. EVENTUALLY...THE LARGE UPPER LOW OVER THE
WESTERN BERING WILL BEGIN TO MAKE EASTWARD PROGRESS AS NUMEROUS
LOBES OF ENERGY ROTATE AROUND THE LOW. THIS WILL SPREAD CLOUDS AND
PRECIPITATION INTO SOUTHCENTRAL ALASKA SATURDAY AND SUNDAY. BY
NEXT WEEK...THERE IS SOME DISCREPANCY WITH SMALLER SCALE
DETAILS...BUT THERE ARE SIGNS THAT THE STRONG NORTH EAST PACIFIC
RIDGE REBUILDS INTO ALASKA MONDAY AND TUESDAY...BRINGING MORE
WARMER AND DRIER WEATHER TO ALASKA...KEEPING THE STORM TRACK OVER
THE BERING SEA.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...STORM 177 178
GALE 175 176.
FIRE WEATHER...RED FLAG WARNING 141.

&&

SYNOPSIS AND MODEL DISCUSSION...DEK
SOUTHCENTRAL ALASKA...RMC
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...ML
LONG TERM...JA

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 3:49 AM AKDTGale WarningAFC11 hr
May 20, 3:49 AM AKDTStorm WarningAFC48 hr
May 20, 3:53 AM AKDTGale WarningAFC48 hr
May 20, 3:53 AM AKDTStorm WarningAFC48 hr
May 20, 10:48 AM AKDTGale WarningAFC4 hr
May 20, 3:01 PM AKDTGale WarningAFC37 hr
May 20, 3:01 PM AKDTSmall Craft AdvisoryAFC37 hr
May 20, 3:01 PM AKDTStorm WarningAFC37 hr

Nearby

Storm Warnings in Alaska, 2015Every storm warning in 2015

Sources

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