000
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
$$
000
FZAK80 PAFC 160223
ICEAFC
SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
620 PM AKDT WEDNESDAY MAY 15 2013
FORECAST VALID...MONDAY MAY 20 2013
ANALYSIS CONFIDENCE...HIGH.
SYNOPSIS...A COLD LOW OVER THE CHUKCHI SEA WILL SPREAD ACROSS
NORTHERN ALASKA THROUGH FRIDAY THEN REDEVELOP OVER THE NORTHERN
CHUKCHI SATURDAY. A WEAK COLD FRONT ASSOCIATED WITH THIS LOW WILL
DROP OVER BERING SEA THROUGH FRIDAY. A DEVELOPING NORTH PACIFIC LOW
WILL MOVE NEAR THE CENTRAL ALEUTIANS MONDAY WHILE HIGH PRESSURE
BUILDS OVER THE GULF OF ALASKA.
-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ220-WALES TO CAPE THOMPSON-
PKZ215-KOTZEBUE SOUND-
ICE COVERED.
-BERING SEA-
PKZ210-DALL POINT TO WALES-
PKZ200-NORTON SOUND-
PKZ185-ST MATTHEW ISLAND WATERS
PKZ180-SOUTHWEST ALASKA WATERS CAPE NEWENHAM TO DALL POINT-
THE ICE EDGE LIES FROM NEAR CAPE NEWENHAM TO 59.4N 162.6W TO 59.2N
163.6W TO 57.1N 165.6W TO 57.6N 170.5W TO 58.8N 175W TO 60.8N 179.5E
TO 61.1N 173.4E AND CONTINUES ALONG THE BERING COAST OF KAMCHATKA.
THE ICE EDGE EAST OF 169W IS MAINLY OPEN WATER. THE ICE EDGE WEST OF
169W IS 1 TO 6 TENTHS NEW...YOUNG AND FIRST YEAR THIN ICE IN STRIPS.
FORECAST THROUGH SATURDAY...COLD NORTHERLY FLOW THROUGH FRIDAY WILL
PUSH THE ICE EDGE TO THE SOUTH 15 TO 25 NM. WARM SOUTHERLY FLOW WILL
MOVE OVER THE WESTERN BERING SUNDAY AND SPREAD ACROSS THE SOUTHERN
BERING SEA THROUGH MONDAY. INCREASING WARM SOUTHERLY FLOW WILL MOVE
THE ICE TO THE NORTH 35 TO 45 NM SUNDAY AND MONDAY. THE NET ICE
MOVEMENT WILL BE TO THE NORTH 15 TO 25 NM.
KCOLE 2013
$$
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