Heavy Freezing Spray Warning Issued for Nelson Lagoon to Cape Sarichef

Alert Details

The National Weather Service (NWS) Anchorage AK has issued a Heavy Freezing Spray Warning (NWS Alert Code: UPW). This alert indicates that conditions are likely to cause significant ice accumulation on vessels in the region.

Affected Areas

The warning covers the coastal waters from Nelson Lagoon to Cape Sarichef, extending out to 15 nautical miles. This includes the Alaska Peninsula waters and the Aleutian Islands up to 100 nm out.

What You Should Do

Mariners and residents in the affected coastal areas are advised to avoid the area during the warning period. Heavy freezing spray can lead to rapid ice accumulation on ships, which can impact vessel stability and safety.

Expected Conditions

Conditions are expected to deteriorate on Thursday, March 5.

• Thursday Night: Northeast winds are forecast at 40 knots with seas reaching 11 feet. Snow and heavy freezing spray are expected.
• Thursday Afternoon: North winds of 20 knots will increase to northeast 30 knots with seas of 5 feet and freezing spray.
• Friday: Northwest winds at 30 knots with seas remaining at 11 feet.

Timeline

The Heavy Freezing Spray Warning is effective starting Thursday, March 5, at 5:00 PM AKST. The warning is currently scheduled to expire on Friday, March 6, at 5:00 AM AKST.