Ice Forecast
Issued by NWS Anchorage, AK

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FZAK80 PAFC 180247
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
645 PM AKDT FRIDAY MAY 17 2013

FORECAST VALID...WEDNESDAY MAY 22 2013

ANALYSIS CONFIDENCE...HIGH.

SYNOPSIS...A DEVELOPING NORTH PACIFIC LOW WILL MOVE TOWARD THE
WESTERN ALEUTIANS THROUGH MONDAY. A STRONG WARM FRONT WILL SPREAD
ACROSS THE BERING SEA THROUGH WEDNESDAY. THE PARENT LOW WILL MOVE
OVER THE CENTRAL ALEUTIANS AND INTO THE BERING SEA TUESDAY AND
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.

-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 162.6W TO 59.2N
163.6W TO 57.2N 165.5W TO 57.7N 170.6W TO 58.7N 174.7W TO 59.7N
175.8W TO 60.4N 174.5W TO 60.7N 178.2W TO 60.8N 179.5E TO 61.5N
176.9E AND CONTINUES ALONG THE BERING COAST OF KAMCHATKA. THE ICE
EDGE IS MAINLY 1 TO 6 TENTHS NEW...YOUNG AND FIRST YEAR THIN ICE IN
STRIPS.

FORECAST THROUGH WEDNESDAY...WARM SOUTHERLY FLOW WILL DEVELOP LATE
SATURDAY AND CONTINUE THROUGH MOST OF THE FORECAST PERIOD. ICE
MOVEMENT WILL BE AS FOLLOWS...

SATURDAY    NORTH 5 TO 10 NM
SUNDAY      NORTHWEST 20 TO 25 NM
MONDAY      NORTHWEST 20 TO 25 NM
TUESDAY     NORTHWEST 15 TO 20 NM
WEDNESDAY   NORTH 10 TO 15 NM

THE NET ICE MOVEMENT THROUGH WEDNESDAY WILL BE 70 TO 95 NM TO THE
NORTHWEST.

WEST TO NORTH FACING SHOREFAST ICE ALONG THE ALASKA WEST COAST AND
THE BERING ISLANDS WILL LOSE 30 TO 50 NM OF ICE. LARGE LEADS WILL
OPEN ALONG WEST FACING COAST AND REMAINING FAST ICE. AREAS OF OPEN
WATER ALONG SOUTH FACING COASTS NORTH OF NUNIVAK ISLAND WILL CLOSE.

KCOLE 2013

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