Sea Ice Advisory


FZAK80 PAFC 022257
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA 
257 PM AKDT MONDAY 02 APRIL 2016 

FORECAST VALID...FRIDAY 06 MAY 2016

ANALYSIS CONFIDENCE...MODERATE TO LOW
                      
SYNOPSIS...AN AREA OF LOW PRESSURE CENTERED JUST NORTH OF ADAK WILL
SWING A FRONT ACROSS THE SOUTHERN BERING SEA THROUGH TUESDAY AS THE
LOW TRACKS EAST AND DISSIPATES. BROAD LOW PRESSURE WILL CONTINUE
ACROSS THE WEST COAST OF ALASKA THROUGH FRIDAY WITH AN AREA OF LOW
PRESSURE MOVING NEAR THE ALASKA PENINSULA ON FRIDAY. HIGH PRESSURE
WILL REMAIN OVER THE BEAUFORT SEA THROUGH THURSDAY BEFORE IT BEGINS
TO SLIDE NORTH INTO THE ARCTIC.

-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 FROM A POINT NEAR 61.1N
165.4W TO 61.1N 165.7W TO 62.1N 166.1W TO 62.3N 165.7W TO 62.7N
167.2W TO 61.6N 167.9W TO 60.2N 171.1W TO 59.5N 178.0W TO 60.1N
179.9W AND CONTINUES IN RUSSIAN WATERS. THE ICE EDGE IS MAINLY OPEN
WATER. DECAYING SHOREFAST ICE CONTINUES TO MELT FROM THE KUSKOKWIM
RIVER DELTA UP TO THE YUKON RIVER DELTA.

FORECAST THROUGH FRIDAY FOR THE BERING SEA...EAST TO NORTHEAST WINDS
ARE EXPECTED TO CONTINUE THROUGH WEDNESDAY BEFORE SWITCHING TO THE
NORTH BY THURSDAY MORNING. WE EXPECT THE REMAINING SEA ICE IN NORTON
SOUND TO CONTINUE SHIFTING TO THE SOUTHWEST OUT OF THE SOUND THROUGH
FRIDAY. 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 FRIDAY WITH THE MOST DRAMATIC DECREASE
IN CONCENTRATIONS THROUGHOUT THE MAIN ICE PACK BETWEEN 175W AND 178W.

$$