textproduct: Juneau
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
UPDATE...updated to include the 06Z TAF issuance
Minimal changes needed this evening as the forecast remains on track. Lowered wind gusts near Skagway for tonight below High Wind criteria, although it will still be quite gusty. Also increased the temps in Sitka this evening due to the onshore flow bringing warmer conditions. Otherwise, expect rain to continue across SEAK, with a changeover from snow to rain ongoing this evening across northern Lynn Canal, including Haines and Skagway, as warmer air lifts north.
MARINE
Outside (Gulf/Coastal waters): In short, a parade of lows will move north along our coast through the week, bringing multiple rounds of gale to storm force conditions. Strongest winds and highest seas overnight Tuesday into Wednesday.
As of 2pm Monday afternoon, southeasterly winds continue to increase in response to a broad parent low located near 47N 159W and a series of secondary lows forecasted to move into our area. Sea state along our coast is a mix of old swell and fresh seas, with dominate direction out of the south- southeast and significant heights of 6 to 8 ft. Winds will continue to increase as secondary lows rotate around their parent system, driving gale force conditions, with fresh seas of 15 ft overnight Monday. Another low will lift into the region Tuesday,biggest change today is strong gale force sustained winds with storm force gusts, along our coast Tuesday night into Wednesday with Cordova Bay, west Prince of Wales, Sitka Sound, and adjacent coastal locations seeing the strongest winds. These winds and a dynamic fetch will be responsible for freshening up seas to near 25 ft, pushing toward the northern coast.
Mariners operating in Yakutat Bay should pay close attention to the developing lows as easterly strong gales could impact the bay Tuesday morning and early Wednesday; however, these winds will be dependent on the track of the low. Closer to shore, higher winds, further offshore, less wind. Current forecast has gale force Tuesday in the Bay with gales offshore of the bar Wednesday.
Inside (Inner Channels): As of 2pm Friday afternoon winds are east to southeast across the majority of the inner channels, with winds increasing to strong breezes for Clarence Strait. Expect these winds to continue to increase overnight, marching north, bringing near- gale to gale force conditions to many inner channels. Winds will decrease a bit Tuesday afternoon before increasing again to near-gales to gales Tuesday night.
AJK WATCHES/WARNINGS/ADVISORIES
PUBLIC...Winter Weather Advisory until 9 AM AKST Tuesday for AKZ318-319. Wind Advisory from 9 PM Tuesday to 9 PM AKST Wednesday for AKZ323. Wind Advisory until 9 PM AKST Wednesday for AKZ328-330-332. MARINE...Gale Warning for PKZ036-053-641>644-651-652-661>664-671-672. Small Craft Advisory for PKZ012-013-021-031>035.
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