Storm Warning Issued for Sitkinak to Castle Cape Coastal Waters Through Friday
This alert is no longer in effect.
NOAA issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
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NWS Anchorage has issued a Storm Warning for coastal waters from Sitkinak to Castle Cape, forecasting dangerous 55-knot winds and 21-foot seas.
Read this weather record in 30 seconds
- Record type
- Storm Warning
- Affected area
- Southwest Alaska Coastal Waters
- Issued
- April 6, 2026
- Issuing authority
- NWS Anchorage AK
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Southwest Alaska Coastal Waters.
Alert Details
The National Weather Service (NWS) in Anchorage, AK, has issued a Storm Warning for the coastal waters of Southwest Alaska. This alert is currently in effect and remains active until 5:00 AM AKST on Friday, February 20, 2026.
Affected Areas
The warning covers the offshore area from Sitkinak to Castle Cape, extending from 15 to 100 nautical miles (NM) out. This includes portions of the Alaska Peninsula waters and the Aleutian Islands.
What You Should Do
Mariners and residents in the affected maritime regions are advised to avoid the area. The NWS response instruction for this event is to avoid travel or operations within the warning zone due to hazardous conditions.
Expected Conditions
Conditions are expected to deteriorate significantly starting Thursday night.
- Winds: Northwest winds are forecast to increase from 35 knots to 50 knots after midnight Thursday, with gusts reaching up to 65 knots. By Friday, winds are expected to reach sustained speeds of 55 knots.
- Seas: Wave heights will build from 16 feet on Thursday night to a peak of 21 feet on Friday.
- Friday Night: Conditions will remain hazardous with North winds at 45 knots and seas at 19 feet.
Timeline
The Storm Warning is effective through 5:00 AM AKST on Friday, February 20. The most severe conditions, including peak wind gusts and maximum sea heights, are expected between midnight Thursday and Friday evening.
Original source: NOAA Official Notice ↗
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