Heavy Freezing Spray Warning Issued for Saint Matthew Island Waters Through Sunday Morning

Alert Details

A Heavy Freezing Spray Warning has been issued by the National Weather Service (NWS) Anchorage AK. The alert is effective starting Saturday morning and remains in place until early Sunday morning.

Affected Areas

The warning specifically impacts the Saint Matthew Island Waters (PKZ767) in the coastal waters of Southwest Alaska.

What You Should Do

Mariners and vessel operators are advised to take necessary precautions. The NWS response recommendation is to avoid the area during the warning period. Heavy freezing spray can cause rapid ice accumulation on vessels, which poses a significant risk to stability and safety.

Expected Conditions

Conditions in the Saint Matthew Island Waters are forecast to deteriorate as follows:

• Winds: Northeast winds will increase from 20 knots tonight to 25 knots on Saturday, reaching 30 knots by Saturday night.
• Seas: Wave heights in ice-free waters will rise from 4 feet tonight to 7 feet by Saturday night. By Sunday, seas are expected to reach 8 feet.
• Precipitation: Widespread snow showers are expected through Saturday.
• Hazard: Heavy freezing spray is forecast to occur tonight through Saturday night.

Timeline

• Onset: Saturday, February 28, 2026, at 5:00 AM AKST.
• Expiration: The Heavy Freezing Spray Warning is currently scheduled to end on Sunday, March 1, 2026, at 5:00 AM AKST.
• Extended Outlook: North winds of 30 knots and seas up to 11 feet are expected to continue from Monday through Wednesday.