053
FZAK80 PAFC 250000
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
400 PM AKDT FRIDAY MAY 24 2013

FORECAST VALID...WEDNESDAY MAY 29 2013

ANALYSIS CONFIDENCE...MODERATE TO HIGH.

SYNOPSIS...A NORTH PACIFIC LOW WILL CROSS THE CENTRAL ALEUTIAN
ISLANDS INTO THE SOUTHERN BERING SEA FRIDAY... MOVING NEAR THE
PRIBILOF ISLANDS SUNDAY... AND SLOWLY TRACKING TO THE SOUTHWEST
BERING SEA AS IT WEAKENS THROUGH WEDNESDAY. A LOW OVER THE WESTERN
CHUKCHI SEA WILL TRACK NORTH SATURDAY... AND HIGH PRESSURE WILL BUILD
OVER THE CHUKCHI AND BEAUFORT SEAS THROUGH WEDNESDAY.

-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ220-WALES TO CAPE THOMPSON-
PKZ215-KOTZEBUE SOUND-

ICE COVERED.

POLYNYAS AND LEADS ARE FORMING JUST BEYOND THE SHOREFAST ICE EDGE
FROM POINT BARROW TO THE EAST ALONG THE ALASKAN NORTH SLOPE.

FORECAST THROUGH WEDNESDAY...POLYNYAS AND LEADS WILL CONTINUE TO FORM
NEAR NORTH AND NORTHWEST FACING COASTS FRIDAY THROUGH MONDAY.
SHOREFAST ICE REMAINS UNSTABLE EXCEPT WHERE GROUNDED.

-BERING SEA-
PKZ210-DALL POINT TO WALES-
PKZ200-NORTON SOUND-
PKZ185-ST MATTHEW ISLAND WATERS
PKZ180-SOUTHWEST ALASKA WATERS CAPE NEWENHAM TO DALL POINT-

THE ICE EDGE LIES FROM NEAR CAPE NEWENHAM TO 59.4N 162.5W TO 58.7N
164.5W TO 58.6N 170.6W TO 60.6N 175.2W TO 61.8N 176.5W TO 61.7N
177.2E AND CONTINUES ALONG THE BERING COAST OF KAMCHATKA. THE ICE
EDGE EAST OF 167W IS OPEN WATER. THE ICE EDGE WEST OF 167W IS MAINLY
4 TO 9 TENTHS NEW...YOUNG AND FIRST YEAR THIN ICE.

FORECAST THROUGH WEDNESDAY...WIND WILL BE DOMINATED BY EASTERLY TO
NORTHEASTERLY FLOW THROUGH WEDNESDAY. WIND FLOW AND CURRENTS WILL AID
IN SPREADING OUT THE SOUTHERN EDGE OF THE ICE PACK. WARMING OCEAN
SURFACE TEMPERATURES AND ADDITIONAL SPRINGTIME SUNLIGHT WILL AID IN
MELTING THE ICE PACK AS IT SPREADS OUT ALONG THE SOUTHERN EXTENT. THE
ICE RETREAT WILL BE STEADY THROUGH WEDNESDAY WITH A NET ICE EDGE
SHIFT 35 TO 65 NM TO THE NORTH BY WEDNESDAY. POLYNYAS WILL OPEN ALONG
SOUTH FACING COASTS SATURDAY THROUGH WEDNESDAY. SHOREFAST ICE SHOULD
BE CONSIDERED VERY UNSTABLE.

BLEGATT 2013

$$