Ice Forecast
Issued by NWS Anchorage, AK

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FZAK80 PAFC 142220
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
220 PM AKDT MONDAY 14 AUGUST 2017

FORECAST VALID...SATURDAY 19 AUGUST 2017

ANALYSIS CONFIDENCE...HIGH TO MODERATE

SYNOPSIS...A LOW PRESSURE SYSTEM WILL DROP INTO THE CHUKCHI FROM THE
NORTH TONIGHT WHILE ANOTHER COMES INTO THE BEAUFORT FROM THE
SOUTHEAST. THE TWO SYSTEMS WILL MERGE WITH A CENTER NORTH OF POINT
BARROW TOWARD 75N. TOWARD THE WEEKEND WEAK LOW PRESSURE AND FLOW
WILL ENCOMPASS THE AREA.

-ARCTIC OCEAN-
ICE COVERED.

-BEAUFORT SEA-
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-

THE MAIN ICE EDGE IN THE BEAUFORT SEA EXTENDS FROM 70.1N 135W TO
71.3N 140W TO 72.9N 138.4W TO 72.7N 152.3W TO 73.3N 153W TO 74.1N
144W TO 76.2N 143.7W TO 76.1 154.3W. THE ICE EDGE IS MAINLY OPEN
WATER.

FORECAST THROUGH SATURDAY FOR THE BEAUFORT SEA...NORTHEASTERLY WINDS
WILL PERSIST THROUGH TUESDAY BEFORE SHIFTING TO THE WEST AND SOUTH
BY WEDNESDAY. THE MAIN ICE EDGE IS EXPECTED TO MOVE TO THE SOUTHWEST
UP TO 10 NM THROUGH SATURDAY.

-CHUKCHI SEA-
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-

THE MAIN ICE EDGE IN THE CHUKCHI SEA EXTENDS FROM 76.1N 154.3W TO
73.4N 171.2W TO 73.0N 179E AND CONTINUES INTO RUSSIAN WATERS. THE
ICE EDGE IS MAINLY OPEN WATER.

FORECAST THROUGH SATURDAY FOR THE CHUKCHI SEA...MODERATE SOUTHERLY
WINDS WILL GIVE WAY TO WESTERLY THEN NORTHWESTERLY WINDS ON TUESDAY.
NORTHERLY WINDS WILL RETURN ON WEDNESDAY FOLLOWED BY A SHIFT BACK TO
LIGHT WESTERLY WINDS THURSDAY THROUGH SATURDAY. THE ICE EDGE IS
EXPECTED TO MOVE TO THE SOUTH BY 5 TO 15 NM THROUGH SATURDAY...WITH
CONTINUED MELTING WITHIN THE ICE PACK.

$$


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