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FZAK80 PAFC 272239
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA 
240 PM AKDT WEDNESDAY 27 APRIL 2016 

FORECAST VALID...SATURDAY 02 MAY 2016

ANALYSIS CONFIDENCE...MODERATE
                      
SYNOPSIS...A BROAD AREA OF LOW PRESSURE WILL SLOWLY SHIFT EAST ALONG
THE ALEUTIAN ISLAND CHAIN THROUGH EARLY FRIDAY... SHIFTING OVER THE
GULF OF ALASKA SATURDAY. A RIDGE OF HIGH PRESSURE WILL MOVE OVER THE
WESTERN BERING SEA FRIDAY... TRACKING EAST ACROSS THE BERING SEA
THROUGH THE WEEKEND. ANOTHER LOW WILL MOVE OVER THE WESTERN BERING
SEA ON MONDAY. 

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

ICE COVERED.

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

THE MAIN ICE EDGE IN THE BERING SEA EXTENDS ALONG THE WEST COAST OF
ALASKA TO A POINT NEAR 62.8N 165.3W TO 60.6N 169.3W TO 59.9N
165.6WTO 60.2N 171.4W TO 59.2N 174.5W TO 59.4N 178.3W TO 60.9N
178.9W AND CONTINUES IN RUSSIAN WATERS. DECAYING SHOREFAST ICE
CONTINUES TO MELT FROM THE KUSKOKWIM RIVER DELTA UP TO THE YUKON
RIVER DELTA.

FORECAST THROUGH MONDAY FOR THE BERING SEA...NORTHEASTERLY FLOW WILL
BECOME LIGHTER NORTHERLY FLOW FRIDAY THROUGH SUNDAY... WITH A RETURN
OF EASTERLY FLOW OVER MUCH OF THE BERING SEA ICE PACK BY MONDAY. WE
EXPECT THE REMAINING SEA ICE IN NORTON SOUND TO CONTINUE SHIFTING TO
THE SOUTHWEST OUT OF THE SOUND THROUGH MONDAY. FIRST YEAR ICE IN THE
MAIN HIGH CONCENTRATION ICE BELT STRETCHING FROM THE NORTH COAST OF
SAINT LAWRENCE DOWN THE EAST COAST OF SAINT LAWRENCE ISLAND AND DOWN
TO SAINT MATTHEW ISLAND WILL CONTINUE TO SPREAD APART TO THE WEST
AND SLOWLY MELT DUE TO INCREASING TEMPERATURES AS WELL AS WIND AND
WAVE ACTION. WE EXPECT ICE CONCENTRATIONS ALONG THE MAIN ICE EDGE IN
THE BERING SEA TO CONTINUE TO DECREASE THROUGH MONDAY WITH THE MOST
DRAMATIC DECREASE IN CONCENTRATIONS THROUGHOUT THE MAIN ICE PACK
BETWEEN 175W AND 178W.

$$

Alaska Region Headquarters
222 West 7th Avenue #23
Anchorage, AK 99513-7575
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Fax: 1-907-271-3711
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Page Modified: 03 Feb 2008 18:00 UTC
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