Ice Forecast
Issued by NWS Anchorage, AK

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6
000
FZAK80 PAFC 202352
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
252 PM AKST MONDAY 20 FEBRUARY 2017

FORECAST VALID...SATURDAY 25 FEBRUARY 2017

ANALYSIS CONFIDENCE...HIGH

SYNOPSIS...A FRONTAL BOUNDARY WILL MOVE OVER THE PRIBILOF ISLANDS
AND PUSH TOWARD THE WEST COAST OF ALASKA EARLY ON TUESDAY. THE FRONT
WILL MOVE INLAND THROUGH FRIDAY...BRINGING WARMER AIR NORTHWARD WITH
IT. A SECOND FRONT WILL MOVE EASTWARD THROUGH THE BERING SEA FRIDAY
THROUGH SATURDAY.

-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-
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-
PKZ200-NORTON SOUND-

ICE COVERED.

-BERING SEA-

PKZ160-BRISTOL BAY-
PKZ165-PORT HEIDEN TO CAPE SARICHEF-
PKZ180-KUSKOKWIM DELTA TO ETOLIN STRAIT-
PKZ181-NORTH AND WEST OF NUNIVAK ISLAND-
PKZ185-SAINT MATTHEW ISLAND WATERS-
PKZ210-DALL POINT TO WALES-

THE MAIN ICE EDGE IN THE BERING SEA EXTENDS FROM NEAR 55.8N 162.2W
TO 56.2N 160.7W TO 57.4N 159W TO 56.7N 164.9W TO 57.4N 170.3W TO
59.1N 172.5W TO 59.8N 175.2W TO 60.6N 175W TO 61N 177.4W TO 62.1N
177.4W AND CONTINUES IN RUSSIAN WATERS. THE ICE EDGE IS MAINLY OPEN
WATER. THERE IS ALSO NEW AND YOUNG SEA ICE WITHIN FALSE PASS...AS
WELL AS SOME NEW ICE ON THE NORTH SIDE OF SAINT PAUL ISLAND.

FORECAST THROUGH SATURDAY FOR THE BERING SEA...WINDS WILL BEGIN
SHIFTING TO THE SOUTHEAST...THEN SOUTHERLY WEDNESDAY THROUGH
SATURDAY. THE MAIN ICE EDGE IS EXPECTED TO RETREAT NORTHWARD 30 TO
45 NM AS STRIPS OF ICE MOVE BACK TOWARD THE MAIN ICE EDGE WITH THE
SOUTHERLY WINDS.

-COOK INLET-
PKZ130-WEST OF BARREN ISLANDS INCLUDING KAMISHAK BAY-
PKZ139-COOK INLET KALGIN ISLAND TO POINT BEDE-
PKZ140-COOK INLET NORTH OF KALGIN ISLAND-
PKZ141-KACHEMAK BAY-

COOK INLET ANALYSIS CONFIDENCE...HIGH

SYNOPSIS FOR COOK INLET...LOW PRESSURE OVER PRINCE WILLIAM SOUND
WILL MOVE OFF TO THE EAST TUESDAY NIGHT AS HIGH PRESSURE BRIEFLY
BUILDS IN. A FRONT MOVES IN FROM THE WEST WEDNESDAY THROUGH
SATURDAY...BRINGING WARMER AIR INTO THE REGION.

THE MAIN ICE EDGE EXTENDS FROM NEAR 60.3N 151.4W TO 60.1N 151.9W TO
60N 152W TO 60.2N 152.3W TO 60N 152.6W. ALSO...NEAR KAMISHAK BAY
FROM 59.4N 153.9W TO 59N 153W TO 58.8N 153.3W. THE ICE EDGE IS
MAINLY OPEN WATER. THERE IS ALSO SOME NEW ICE IN THE SHALLOW AREAS
OF KACHEMAK BAY.

FORECAST THROUGH SATURDAY FOR COOK INLET...TEMPERATURES ARE EXPECTED
TO GRADUALLY WARM THROUGH FRIDAY...WITH SOME ABOVE FREEZING HIGHS
POSSIBLE FRIDAY AND SATURDAY. WHILE THERE MAY BE SOME NEW SEA ICE
GROWTH THROUGH WEDNESDAY...OVERALL WE WILL LIKELY SEE A SLIGHT
DECREASE IN THE COVERAGE OF SEA ICE THROUGH SATURDAY AS THE WARMER
AIR MOVES IN...ESPECIALLY SOUTH OF KALGIN ISLAND WHERE SEA SURFACE
TEMPERATURES ARE WARMEST.

PLEASE NOTE...COOK INLET ICE CHANGES SIGNIFICANTLY WITH THE TIDES.

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.