Marine Weather and Tide Forecast for Clam Gulch, AK

.SHORT TERM FORECAST SOUTHWEST ALASKA/BERING SEA/ALEUTIANS (Days 1 through 3)...

A 960 mb low occupies the western Bering, while its front extends across Southwest Alaska and the Alaska Peninsula (AKPen) this afternoon. Mixed precipitation will continue through Sunday for the Bering Sea, AKPen, and Southwest mainland as the front continues rotating around the western and southern sides of the system. The low will slowly track north of the Pribilofs, by Sunday afternoon and continue eastward across the Kusko Delta by Monday afternoon. Rain is expected for the Aleutian Islands and Alaska Peninsula with a brief period of snow before changing to rain for the Pribilofs and all snow for the interior mainland.

Not far behind is a second low that lifts into the southern Bering Sunday night into Monday morning. Its position will likely remain in the vicinity of Adak through Tuesday. Precipitation from this second system may initially be a mix of rain and snow, but trend toward all rain while the front's leading edge, trailing a long moisture fetch from the North Pacific, is pushed into the Bering Sea on Tuesday morning. Widespread gales are expected across the AKPen and open water of the Bering Sea.

ER

.LONG TERM FORECAST (Days 4 through 7: Wednesday through Saturday)...

A transition toward cooler and more unsettled conditions is expected across much of Alaska through the upcoming week. A pattern dropping south from the north will usher in colder air along with periodic snow showers, particularly across the interior and the Alaska Range.

By early to mid next week, attention shifts to Southcentral and Southeast Alaska as a developing system draws in a deeper surge of moisture. This will likely bring several days of mixed precipitation, including rain at lower elevations and snow at higher elevations. The heaviest snowfall appears most likely across the Alaska Range and through higher elevation passes, accompanied by increasing winds.

A strong North Pacific low continues to be monitored. While current guidance keeps this system south of the state, any northward shift toward the Gulf of Alaska could introduce another round of impactful weather late next week.

LM


AVIATION

PANC...VFR ceilings and light south to southwest winds linger through this afternoon. By about 09Z tonight, winds will turn southeasterly out of Turnagain Arm and gradually increase, peaking as high as 30-40 kt on Sunday afternoon.

These southeasterly winds will likely keep temperatures above freezing, so when precipitation begins around 12Z, it should fall as rain. There is a small chance that precipitation will begin as a snow/rain mix, but any snow accumulations should be minimal.
Ceilings will drop to MVFR with the onset of precipitation and dip as low as IFR as precipitation continues through late Sunday afternoon.