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 7 8 9
000
FZAK80 PAFC 252230
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
230 PM AKDT WEDNESDAY 25 MARCH 2015

FORECAST VALID...MONDAY 30 MARCH 2015

ANALYSIS CONFIDENCE...HIGH

SYNOPSIS...AN AREA OF LOW PRESSURE SITUATED SOUTH OF KODIAK ISLAND
WILL MOVE NEAR KODIAK ISLAND LATE THURSDAY MORNING. A SERIES OF LOW
PRESSURE SYSTEMS WILL SKIRT SOUTH OF THE ALEUTIAN CHAIN THROUGH
SUNDAY MORNING. AN AREA OF LOW PRESSURE WILL PUSH OFF KAMCHATKA
SUNDAY MORNING AND PUSH INTO THE WESTERN BERING SEA SUNDAY AFTERNOON
AS IT PUSHES A FRONT ACROSS THE BERING SEA.

-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-

PKZ500-WESTERN US ARCTIC OFFSHORE-
PKZ505-CENTRAL US ARCTIC OFFSHORE-
PKZ510-EASTERN US ARCTIC OFFSHORE-
PKZ220-WALES TO CAPE THOMPSON-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-

ICE COVERED.

-BERING SEA-

PKZ215-KOTZEBUE SOUND-
PKZ200-NORTON SOUND-
PKZ210-DALL POINT TO WALES-
PKZ160-BRISTOL BAY-
PKZ180-KUSKOKWIM DELTA AND ETOLIN STRAIT-
PKZ181-NORTH AND WEST OF NUNIVAK ISLAND-
PKZ185-SAINT MATTHEW ISLAND WATERS-

THE MAIN ICE EDGE LIES FROM THE ALASKA COAST FROM A POINT NEAR 58.3N
158.0W TO 57.9N 157.4W TO 58.2N 164.8W TO 57.4N 171.1W TO 60.9N
178.4W AND CONTINUES ALONG THE RUSSIAN COAST. THE ICE EDGE IS MAINLY
OPEN WATER WITH TO 7 TO 9 TENTHS NEW...YOUNG...AND FIRST YEAR THIN
SEA ICE ALONG THE RUSSIAN COAST.

FORECAST THROUGH MONDAY FOR THE BERING SEA E OF 168W...STRONG
EASTERLY WINDS WILL BEGIN TO DIMINISH THURSDAY AFTERNOON. WINDS WILL
BEGIN TO SHIFT TO THE SOUTHEAST LATE FRIDAY AND SHIFT TO THE
NORTHEAST BY LATE SATURDAY MORNING. WINDS WILL THEN BECOME LIGHT AND
VARIABLE ON SUNDAY. THE ICE EDGE IS EXPECTED TO MOVE TO THE
WEST/SOUTHWEST 15 TO 25 NM THROUGH MONDAY.

FORECAST THROUGH MONDAY FOR THE BERING SEA FROM 168W WEST...STRONG
NORTHERLY WINDS WILL SLOWLY BEGIN TO DIMINISH STARTING THURSDAY
AFTERNOON AND BECOME LIGHT FROM THE NORTH OVER THE WEEKEND. THE ICE
EDGE IS EXPECTED TO MOVE TO THE SOUTH/SOUTHWEST 10 TO 20 NM THROUGH
MONDAY WITH STRIPS OF ICE BEING PULLED OFF THE MAIN PACK. WARMER SEA
SURFACE TEMPERATURES TO THE SOUTH OF THE ICE PACK WILL INHIBIT
FURTHER SOUTHERN PROGRESS OF THE ICE.

-COOK INLET-

PKZ140-COOK INLET NORTH OF KAMISHAK BAY AND ENGLISH BAY-

COOK INLET ANALYSIS CONFIDENCE...HIGH

SYNOPSIS FOR COOK INLET...AN AREA OF LOW PRESSURE IN THE WESTERN
GULF WILL MOVE NEAR KODIAK LATE THURSDAY MORNING BEFORE SHIFTING
WEST TOWARD THE ALASKA PENINSULA. A SECOND AREA OF LOW PRESSURE WILL
ENTER THE WESTERN GULF ON SATURDAY AND PUSH A FRONT ALONG THE
NORTHERN GULF COAST. THE AFOREMENTIONED LOW WILL MOVE INTO THE
NORTHERN GULF ON SUNDAY.

THE MAIN ICE EDGE LIES FROM THE COAST FROM A POINT NEAR THE EAST
FORELAND TO 60.5N 151.6W TO 60.3N 152.4W. THE ICE EDGE RANGES FROM 1
TENTH TO 3 TENTHS NEW AND YOUNG ICE. LOW CONCENTRATIONS OF ICE ARE
ALSO PRESENT IN SHALLOW BAYS ALONG THE WEST COAST OF LOWER COOK
INLET.

FORECAST FOR COOK INLET THROUGH MONDAY...MODERATE TO STRONG
NORTHERLY WINDS WILL PERSIST THROUGH THURSDAY AFTERNOON. WINDS WILL
THEN BECOME LIGHT AND VARIABLE THROUGH SATURDAY MORNING WHERE
NORTHERLY WINDS WILL ONCE AGAIN BE MODERATE TO STRONG. ABOVE NORMAL
HIGHS ARE FORECAST THROUGH SATURDAY...THEREFORE EXPECT ICE TO SLOWLY
MELT THROUGH EARLY NEXT WEEK. NEW ICE WILL LIKELY FORM EACH NIGHT
WHERE TEMPERATURES FALL BELOW FREEZING...THEN MELT DURING THE
DAYTIME.

PLEASE NOTE...COOK INLET SEA 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.