FZAK78 PAFC 071041
MWSAFC

Marine Weather Statement
National Weather Service Anchorage AK
241 AM AKDT Sun Apr 7 2024

PKZ756-757-760>762-764-080330-
Port Heiden to Nelson Lagoon out to 15 NM-
Port Heiden to Nelson Lagoon from 15 to 60 NM-
Bristol Bay greater than 15 NM-
Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM-
Bristol Bay from Cape Chichagof to Cape Pierce out to 15 NM-
Kuskokwim Delta from 15 to 80 NM-
241 AM AKDT Sun Apr 7 2024

...EXTREME VESSEL ICING POSSIBLE FROM ST MATTHEW ISLAND TO
BRISTOL BAY SUNDAY NIGHT THROUGH TUESDAY...

Northwesterly winds in combination with frigid, Arctic air could 
lead to extreme vessel icing at rates of 4 cm an hour or greater.

A very cold airmass will move south from the Arctic Sunday,
bringing with it strong winds. Heavy to extreme freezing spray is
expected to spread south to southeast from St. Matthew Island, in
areas with open water, late Sunday night. Expect heavy to extreme
freezing spray off of the coast of Cape Newenham starting Monday
morning, and Bristol Bay early Monday afternoon. The threat of 
extreme freezing spray could persist through Wednesday.

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.

$$