Manokotak, AK Severe Weather Alertstar_ratehome

...EXTREME VESSEL ICING POSSIBLE FROM NORTH AND WEST OF NUNIVAK
ISLAND TO CAPE NEWENHAM THROUGH MONDAY AFTERNOON...

Northeasterly winds in combination with Arctic Air surging south
across the Bering Sea is likely to lead to extreme vessel icing
at rates of 4 cm per hour or greater.

As colder air filtering in from the Arctic, northerly winds will
intensify across the eastern Bering Sea. These factors will cause
extreme freezing spray to spread south and west from the Kuskokwim
Delta. Heavy to extreme freezing spray will extend from Cape
Newenham to north and west of Nunivak Island beginning Saturday
morning. Extreme freezing spray is also possible out of Kvichak
Bay as far west as Cape Constantine. Winds diminish on Monday,
which should cause icing rates to decrease by Monday afternoon.

Operating a vessel in heavy to extreme freezing spray is
hazardous. Freezing spray may render mechanical and electronic
components inoperable. Rapid ice accretion on decks and
superstructures may result in catastrophic loss of stability.