textproduct: Juneau
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UPDATE...update to include the 06Z TAF issuance
Minor updates to ongoing marine and land winds across the southern panhandle, decreasing winds and gusts based on upstream observations of a low tracking inland near Haida Gwaii. Winds will increase overnight locally for Prince of Wales, Annette Island, and Ketchikan with gusts up to 40mph before decreasing into mid morning Friday, Wind Advisories remain in effect.
MARINE
Marines: Outside (Gulf and coastal waters):Thursday a storm force low with minimum pressure near 967mb will continue to move NW, making landfall over the Kenai/Cook Inlet over the next 24 hours. Winds continue to slacken across our coastal waters, with the main threat focused around stout southwesterly swell moving in. Satellite derived wave winds and altimeter wave heights highlight 20 to 24 ft wave heights in the central gulf, which will continue to travel north through the afternoon. While wave heights diminish as they spread north, long period energy will impact major ocean entrances like Yakutat Bay, Cross Sound, Chatham, and Sumner. Caution is advised, especially during ebb tide cycles. Early Friday a rapidly moving low will slide into the southern Panhandle, with confidence increasing on track and landfall of this feature. Expect a quick hit of near-gale to gale force southerly winds in Clarence Strait, with near-gales to strong breezes impacting western Prince of Wales. Winds and seas relax Saturday before a large system moves into the gulf, driving gale force southerly easterly winds.
For mariners transiting the northern coast from Cross Sound to Cape St. Elias, expecting significant wave heights to fall below 10 ft by Friday afternoon and remaining below 10 ft until early Sunday.
Inside (Inner Channels): Thursday winds continue to trend downward, with web camera images and observations from the Marine Exchange of Alaska highlighting moderate to fresh breezes (or less) for the majority of the inner channels. Main problem area early Thursday was south of Gravina Island, with SAR satellite derived winds showing gale force conditions into Dixon. Winds will be light Thursday afternoon into the evening but dont get complacent, they will increase from the east to north as a fast- moving low pushes toward the southern Panhandle from Haida Gwaii. Expecting near gale to gale force conditions to impact Dixon and southern clarence sometime near midnight, with winds becoming southerly Friday morning. This southerly surge will move north through the day, bringing strong breezes to near gales into Stephens. One exception of winds tonight will be Lynn Canal and Taku, where a tightening pressure gradient will help drive a few hours of strong breezes to possibly near gales out of the north, with a southerly surge of fresh breezes Friday night.
AJK WATCHES/WARNINGS/ADVISORIES
PUBLIC...Wind Advisory from 4 AM to 3 PM AKST Friday for AKZ328-330-332. MARINE...Small Craft Advisory for PKZ012-013-022-031-033>036-053-641>644- 651-652-661>664-671-672.
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