Storm Warning Issued for Marmot Island to Sitkinak Coastal Waters Through Friday Morning

Alert Details

A Storm Warning has been issued by the National Weather Service (NWS) Anchorage AK. The alert is effective as of February 18 at 3:21 PM AKST and is scheduled to remain in effect until February 20 at 5:00 AM AKST.

Affected Areas

The warning specifically covers the coastal waters from Marmot Island to Sitkinak, from 15 to 85 nautical miles (NM) out. The broader forecast area includes the Northern Gulf of Alaska Coast up to 100 NM out, encompassing Kodiak Island and Cook Inlet.

What You Should Do

Residents and mariners in the warning area are advised to avoid the affected coastal waters. The National Weather Service recommends taking necessary precautions to protect life and property before the onset of hazardous conditions.

Expected Conditions

According to the Coastal Waters Forecast, the following conditions are expected:

• Winds: Northwest winds will increase to 40 knots on Thursday, reaching 50 knots Thursday night and peaking at 55 knots on Friday. North winds of 50 knots will continue into Friday night.
• Seas: Wave heights will build to 13 feet on Thursday, 19 feet on Thursday night, and reach a peak of 20 feet on Friday.
• Additional Hazards: Freezing spray is forecast for Thursday night.

Timeline

The Storm Warning is in effect through 5:00 AM AKST on Friday, February 20. While the specific warning window ends Friday morning, hazardous conditions are expected to persist, with 40-knot winds and 13-foot seas continuing through Saturday. Conditions are forecast to improve by Sunday with winds decreasing to 20 knots.