167
FZAK80 PAFC 161432
ICEAFC
SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
320 PM AKDT MONDAY 15 OCTOBER 2018
FORECAST VALID...SATURDAY 20 OCTOBER 2018
ANALYSIS CONFIDENCE...MODERATE TO HIGH
SYNOPSIS...A FRONT WILL SIT OVER THE SOUTHERN BEAUFORT THROUGH
WEDNESDAY NIGHT. HIGH PRESSURE WILL REMAIN OVER THE NORTHERN
BEAUFORT SEA THROUGH SATURDAY, SPREADING SOUTHWARD AFTER WEDNESDAY.
-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-
THE ICE EDGE EXTENDS FROM NEAR POINT BARROW TO 70N 141.7W TO 71.7N
149W TO 73.1N 148.6W TO 72N 153.2W TO 75.8N 167.4W TO 75.5N 174.4W
AND CONTINUES WESTWARD INTO RUSSIAN WATERS. THE ICE EDGE IS MAINLY
OPEN WATER.
FORECAST FOR THE CHUKCHI SEA (DAYS 1 THROUGH 5)...LIGHT SOUTHERLY
WINDS WILL CONTINUE ACROSS THE NORTHERN CHUKCHI. THE ICE EDGE WILL
DRIFT NORTHWARD UP TO 10NM, WITH ADDITIONAL NEW SEA ICE GROWTH
EXPECTED ALONG AND NEAR THE ICE EDGE THROUGH SATURDAY.
FORECAST FOR THE BEAUFORT SEA (DAYS 1 THROUGH 5)...LIGHT TO MODERATE
EASTERLY WINDS WILL PERSIST THROUGH THURSDAY AFTERNOON NEAR THE
ALASKAN COAST. EXPECT THE PACK ICE IN THE EASTERN BEAUFORT TO DRIFT
WESTWARD 25 TO 45 NM THROUGH SATURDAY WITH CONTINUED GROWTH ALONG
THE ICE EDGE. HIGH PRESSURE AND FAVORABLE SEA SURFACE TEMPERATURES
WILL EXIST IN THE NORTHERN BEAUFORT, WHICH WILL LEAD TO A FLASH
FREEZE OF MOST OF THE AREA.
LAWSON
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