Marine Weather and Tide Forecast for Angoon, AK

FXAK67 PAJK 220546 AAA AFDAJK

Southeast Alaska Forecast Discussion...UPDATED National Weather Service Juneau AK 946 PM AKDT Wed May 21 2025

SHORT TERM
Drying trend with some clearing describes the next 24 hours well as a ridge slowly builds over the panhandle.
Unfortunately for many looking for continued dry weather, this ridge is quickly broken down by an upper level low moving into the central gulf. This upper level low looks to be enhanced by cold air moving down from the Bering Sea. The parent low will decay slightly, with an occluded front moving up from the south Thursday night. This front will move up from the south, bringing some enhanced winds and some precipitation to the southern half of the panhandle.

While this front is moving into the panhandle, a quick moving trough from south of the Aleutian Islands will combine with the existing upper low to significantly amplify the trough. The trough on Thursday going into Friday will become negatively tilted, with significant divergence over the southern panhandle. The result will be a stronger front moving into the southern panhandle Friday morning. Moderate to heavy rain rates will accompany this front on Friday morning for the southern panhandle, with rates upwards of 0.1 inches per hour with rain totals around 1 inch. It is important to note, these rain rates and totals may not seem impressive; however, it is unusual to see these higher rain totals during this time of year.

With the aforementioned amplified trough, a long fetch of moisture from the tropics looks to be tapped, increasing IVT above 250 Kg/ms. Considering the long fetch, this would classify as a weak AR.

LONG TERM
Looking towards the weekend, the rainy weather returns with the rainy weather lasting into next week.

Key points: -Moderate to heavy rain expected in the panhandle beginning Saturday.
-Stronger-than-normal southerly winds will move into the southern panhandle.
-Rainy weather looks to last well into next week.

Details: An area of low pressure will slide into the panhandle from the west, then get pushed northward Saturday and Sunday. Beyond Sunday, ensemble models keep an averaged low pressure in the gulf through much of next week. This would give SE AK a rainy week.

As far as rainfall amounts, latest EURO and GFS ensembles are averaging about 1 to 2 inches of rain each day beginning Saturday.
Areas on the windward side of mountains could get a little more.
Overall, just a rainy week ahead but no flooding is expected at this time.

For wind speeds, the EFI is highlighting stronger-than-normal southerly wind speeds Saturday through Monday. Marine wind speeds in the southern inner channels could get upwards of 20 to 35 knots with the strongest speeds found in southern Clarence Strait and in the outside waters.
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