Marine Weather and Tide Forecast for Chevak, AK

KEY WEATHER MESSAGES
Central and Eastern Interior...
- With minimal cloud cover, lows in the 30s and 40s below zero persist in colder/valley locations through much of the week.

- Wind will continue to diminish through today, with nearly calm winds by this evening.

- Blowing snow will persist along the Richardson and Parks Highway in the southern slopes of the AK Range while gradually decreasing today as winds weaken there.

West Coast and Western Interior...
- Breezy conditions will gradually weaken today, with generally weak or calm winds tonight.

- Cold and calmer weather persists thereafter with lows in the single digits above/below zero along the coast and teens to about 30F below zero in the Interior through much of the week.

North Slope and Brooks Range...
- Cold and breezy conditions continue.

- A front brings clouds and areas of snow to the Slope and Brooks Range on Monday and Tuesday. Light snow will persist into Wednesday.

- Accumulations look to be around 1 inch or less along the coast and up to 2 inches in Atigun and Anaktuvuk Passes.

FORECAST ANALYSIS AND DISCUSSION
A 545 dm ridge is centered over the Bering Sea, with a 497 mb trough over the Canadian Archipelago. Clear skies are in place across roughly the southeastern half of mainland ALaska, with 850 mb temperatures over eastern areas well into the -20s. Moving into this evening and tonight, a shortwave will ride along the top of the ridge and bring periods of snow to the North Slope and northeastern Interior through Wednesday before moving out of the area. Colder air will move into the North Slope from the northwest behind the snow with a surface cold front from Monday evening into Tuesday, with increasing westerly winds across the Arctic Coast, especially in eastern areas. Drier conditions are likely across the Interior with limited cloud cover in place before additional chances for snow return Thursday.

.EXTENDED FORECAST DAYS 4-7...
Chances for snow and, in the YK Delta region, potentially some mixed precipitation/rain, will return to much of Northern Alaska beginning early Thursday as the ridge over the Bering and Chukchi Seas shifts east and a low on its northern edge shifts off of Siberia into the Arctic. After the low moves off of Siberia, it will likely track east along or over the Arctic coast of Alaska, bringing windy conditions there (and potentially blowing snow with some visibility restrictions). This may also bring with it a broad area of cloudy conditions with potentially a few inches of snowfall to much of Alaska north of the Alaska Range. This would also yield warmer weather, with many areas rising back into the single digits above zero (double digits in western locations).
Colder and drier conditions will resume by the latter half of the weekend, with low temperatures broadly in the -20s and -30s again.

Coastal Hazard Potential Days 3 and 4...None

AFG WATCHES/WARNINGS/ADVISORIES
AK...None.
PK...Brisk Wind Advisory for PKZ801-850.
Brisk Wind Advisory for PKZ802-805.
Brisk Wind Advisory for PKZ803-804-852-853.
Brisk Wind Advisory for PKZ815.
Small Craft Advisory for PKZ851.
Heavy Freezing Spray Warning for PKZ851.