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Heavy Snow from the Wasatch to the Upper Midwest

A strong weather system will bring heavy snow, gusty winds, and difficult travel conditions to a broad area from the Great Basin to the Upper Midwest. Farther south, strong winds and dry conditions is increasing the wildfire threat. Unusual warmth from the Ohio Valley to the Mid-Atlantic continues. The approaching cold front brings a threat of severe weather to the Ohio Valley later in the week. Read More >

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Ice Analysis Layer: Concentration Stage Forecast  Legend
created:

000
FZAK80 PAFC 230011
ICEAFC

SEA ICE ADVISORY FOR WESTERN AND ARCTIC ALASKAN COASTAL WATERS
NATIONAL WEATHER SERVICE ANCHORAGE ALASKA
310 PM AKST WEDNESDAY 22 FEBRUARY 2017

FORECAST VALID...MONDAY 27 FEBRUARY 2017

ANALYSIS CONFIDENCE...HIGH TO MODERATE

SYNOPSIS...A SERIES OF LOWS WILL TRACK ALONG THE EAST COAST OF
RUSSIA THROUGH SATURDAY. A FRONT WILL MOVE ACROSS THE EASTERN AND
NORTHERN BERING TONIGHT...WITH ANOTHER FRONT PASSING OVER THE BERING
FROM WEST TO EAST FRIDAY AND SATURDAY. THIS WILL KEEP WARMER AIR
OVER THE REGION THROUGH THE WEEKEND. HIGH PRESSURE WILL BUILD OVER
THE BERING SUNDAY AND MONDAY.

-ARCTIC OCEAN-
-BEAUFORT SEA-
-CHUKCHI SEA-
PKZ510-EASTERN U.S. ARCTIC OFFSHORE-
PKZ505-CENTRAL U.S. ARCTIC OFFSHORE-
PKZ500-WESTERN U.S. ARCTIC OFFSHORE-
PKZ245-FLAXMAN ISLAND TO DEMARCATION POINT-
PKZ240-CAPE HALKETT TO FLAXMAN ISLAND-
PKZ235-POINT FRANKLIN TO CAPE HALKETT-
PKZ230-CAPE BEAUFORT TO POINT FRANKLIN-
PKZ225-CAPE THOMPSON TO CAPE BEAUFORT-
PKZ220-WALES TO CAPE THOMPSON-
PKZ215-KOTZEBUE SOUND-
PKZ200-NORTON SOUND-

ICE COVERED.

-BERING SEA-

PKZ160-BRISTOL BAY-
PKZ165-PORT HEIDEN TO CAPE SARICHEF-
PKZ180-KUSKOKWIM DELTA TO ETOLIN STRAIT-
PKZ181-NORTH AND WEST OF NUNIVAK ISLAND-
PKZ185-SAINT MATTHEW ISLAND WATERS-
PKZ210-DALL POINT TO WALES-

THE MAIN ICE EDGE IN THE BERING SEA EXTENDS FROM NEAR 56.0N 161.5W
TO 56.8N 159.6W TO 57.6N 159.0W TO 57.4N 164.4W TO 57.7N 169.6W TO
59.6N 175.2W TO 61.2N 176.1W AND CONTINUES IN RUSSIAN WATERS. THE
ICE EDGE IS MAINLY OPEN WATER. THERE IS ALSO NEW AND YOUNG SEA ICE
WITHIN FALSE PASS...AS WELL AS SOME NEW ICE ON THE NORTH SIDE OF
SAINT PAUL ISLAND.

FORECAST THROUGH MONDAY FOR THE BERING SEA...SOUTHERLY WINDS WILL
PERSIST OVER THE BERING SEA ICE PACK THROUGH SATURDAY. WINDS WILL
BECOME VARIABLE SUNDAY INTO MONDAY. THE MAIN ICE EDGE IS EXPECTED TO
RETREAT NORTHWARD 25 TO 40 NM BY MONDAY AS STRIPS OF ICE MOVE BACK
TOWARD THE MAIN ICE EDGE.

-COOK INLET-
PKZ130-WEST OF BARREN ISLANDS INCLUDING KAMISHAK BAY-
PKZ139-COOK INLET KALGIN ISLAND TO POINT BEDE-
PKZ140-COOK INLET NORTH OF KALGIN ISLAND-
PKZ141-KACHEMAK BAY-

COOK INLET ANALYSIS CONFIDENCE...MODERATE TO HIGH

SYNOPSIS FOR COOK INLET...A SERIES OF FRONTS WILL MOVE OVER THE GULF
OF ALASKA THROUGH SATURDAY...BRINGING WARMER AIR INTO THE REGION.

THE MAIN ICE EDGE EXTENDS FROM NEAR 60.3N 151.4W TO 60.1N 151.9W TO
60N 152W TO 60.2N 152.3W TO 60N 152.6W. ALSO...NEAR KAMISHAK BAY
FROM 59.4N 153.9W TO 59N 153W TO 58.8N 153.3W. THE ICE EDGE IS
MAINLY OPEN WATER. THERE IS ALSO SOME NEW ICE IN THE SHALLOW AREAS
OF KACHEMAK BAY.

FORECAST THROUGH MONDAY FOR COOK INLET...WINDS WILL GENERALLY REMAIN
LIGHT AND VARIABLE THROUGH MONDAY...WITH DAYTIME HIGHS CLIMBING NEAR
OR ABOVE FREEZING THROUGH THE WEEKEND. SEA ICE WILL LIKELY DECREASE
IN COVERAGE THROUGH MONDAY...ESPECIALLY SOUTH OF KALGIN ISLAND WHERE
SEA SURFACE TEMPERATURES ARE WARMEST.

PLEASE NOTE...COOK INLET ICE CHANGES SIGNIFICANTLY WITH THE TIDES.

$$

Regional Information

Downloads: Shapefile : KMZ | last updated Wed Feb 22 15:17:37 AKST 2017

Ice Concentration Ice Stage 5 Day Ice Forecast

 

Cook Inlet Sector

Ice Concentration Ice Stage

 

Sea Surface Temperature Analysis

Regional Analysis

 

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