Sea Ice Advisory


FZAK80 PAFC 222324
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS 
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA 
322 PM AKDT WEDNESDAY 22 OCTOBER 2014 

FORECAST VALID...MONDAY 27 OCTOBER 2014

ANALYSIS CONFIDENCE...HIGH OVER ICE PACK
                      LOW ALONG COAST.

SYNOPSIS...HIGH PRESSURE OVER THE NORTHERN CHUKCHI AND BEAUFORT SEAS 
WILL MOVE OFF TO THE NORTHWEST ON THURSDAY AS A FRONT SWINGS 
NORTHWARD TOWARD THE NORTHERN COAST OF ALASKA. THE LOW ASSOCIATED 
WITH THE FRONT WILL MOVE INTO THE CHUKCHI SEA SATURDAY THROUGH 
MONDAY.
 
-ARCTIC OCEAN-

ICE COVERED.

-CHUKCHI SEA-
PKZ500-WESTERN US ARCTIC OFFSHORE-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ215-KOTZEBUE SOUND-

THE MAIN ICE EDGE LIES FROM A POINT ROUGHLY 40 NM NORTH OF BARROW TO 
72.6N 161.4W TO 73.7N 166.8W TO 73.1N 169.4W TO 73.2N 175.9W TO 
73.7N 178.8E TO 72.5N 178.6E TO 72.3N 175E AND CONTINUES WEST IN THE 
RUSSIAN ARCTIC. THE ICE EDGE CONSISTS OF OPEN WATER. NEW TO YOUNG 
ICE HAS FORMED IN THE PROTECTED WATERS OF THE ALASKA COAST FROM 
PEARD BAY TO POINT HOPE. NEW TO YOUNG SEA ICE HAS ALSO FORMED IN THE 
SHALLOW WATERS OF KOTZEBUE SOUND AND THE PROTECTED WATERS NEAR 
KIVALINA.
 
FORECAST THROUGH MONDAY FOR THE CHUKCHI SEA...MODERATE TO STRONG 
EASTERLY FLOW IS EXPECTED TO PERSIST OVER THE CHUKCHI SEA ICE EDGE 
THROUGH SATURDAY. FLOW WILL THEN BECOME MODERATE TO STRONG SOUTHERLY 
SUNDAY THROUGH MONDAY. THE OVERALL ICE EDGE IS EXPECTED TO EXPAND TO 
THE WEST SOUTHWEST 25 TO 35 NM THROUGH SATURDAY...THEN MOVE NORTH UP 
TO 15 NM THROUGH MONDAY. IN ADDITION NEW ICE IS EXPECTED TO CONTINUE 
FORMING IN THE PROTECTED SHALLOW AREAS ALONG THE COAST FROM KOTZEBUE 
SOUND UP TO PEARD BAY DURING TIMES OF LIGHT WINDS.

-BEAUFORT SEA-
PKZ505-CENTRAL US ARCTIC OFFSHORE-
PKZ510-EASTERN US ARCTIC OFFSHORE-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-SATURDAY

THE MAIN ICE EDGE LIES FROM THE SOUTHWEST COAST OF BANKS ISLAND TO 
72.6N 127.3W TO 71.4N 133W TO 70.8N 141.6W TO A POINT ROUGHLY 40 NM 
NORTH OF POINT BARROW. THE ICE EDGE IS MAINLY OPEN WATER TO 5 TENTHS 
YOUNG AND NEW ICE IN STRIPS. NEW AND YOUNG SEA ICE LIES UP TO 20 NM 
OFF THE NORTHERN COASTLINE OF ALASKA. 

FORECAST THROUGH MONDAY FOR THE BEAUFORT SEA...MODERATE TO STRONG 
EASTERLY TO NORTHEASTERLY FLOW WILL PERSIST OVER MUCH OF THE 
BEAUFORT SEA THROUGH MONDAY. THERE WILL BE SOME BRIEF PERIODS OF 
SOUTHERLY WINDS ALONG THE COAST AT TIMES. THE OVERALL ICE EDGE IS 
EXPECTED TO EXPAND 15 TO 25 NM TO THE WEST SOUTHWEST THROUGH MONDAY 
AND NEW SEA ICE IS EXPECTED TO CONTINUE FORMING WITHIN THE BARRIER 
ISLANDS OF THE ALASKA NORTH COAST AND IN LOCATIONS OF LIGHT WINDS. 

-BERING SEA-
PKZ200-NORTON SOUND-

NEW SEA ICE IS BEGINNING TO FORM IN THE SHALLOW PROTECTED WATERS OF 
NORTON SOUND FROM PORT SAFETY TO GOLOVIN TO KOYUK TO 30 NM NORTH OF 
SCAMMON BAY.

FORECAST THROUGH MONDAY FOR THE BERING SEA...NEW SEA ICE IS EXPECTED 
TO SLOWLY CONTINUE FORMING IN THE SHALLOW PROTECTED WATERS OF NORTON 
SOUND THROUGH MONDAY. 

$$

SCHRECK