Storm Warning Issued for Sitkinak to Castle Cape Waters with 70-Knot Gusts Expected
This alert is no longer in effect.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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The National Weather Service has issued a Storm Warning for Sitkinak to Castle Cape offshore waters, forecasting 70-knot gusts and 20-foot seas through Friday.
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
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
A Storm Warning has been issued by the National Weather Service (NWS) Anchorage AK. This alert is in effect for offshore coastal waters as a significant weather system moves through the region, bringing hazardous maritime conditions.
Affected Areas
The warning covers the coastal waters from Sitkinak to Castle Cape, extending from 15 to 100 nautical miles out. This includes portions of the Southwest Alaska, Bristol Bay, and Alaska Peninsula waters.
What You Should Do
Mariners are advised to avoid the warning area. The NWS recommends taking immediate action to secure vessels and equipment against extreme wind and high seas. Operators should monitor updated forecasts and remain in safe harbor until conditions improve.
Expected Conditions
Dangerous maritime conditions are forecast for the duration of the alert:
- Winds: Northwest winds will increase to 40-50 knots tonight, reaching sustained speeds of 55 knots on Friday.
- Gusts: Wind gusts are expected to reach 65 knots after midnight tonight and peak at 70 knots on Friday.
- Seas: Wave heights will build from 12 feet today to 16 feet tonight, peaking at 20 feet on Friday.
- Additional Hazards: Freezing spray is expected on Friday as temperatures and wind speeds fluctuate.
Timeline
- Onset: Thursday, February 19, at 5:00 PM AKST.
- Peak Conditions: Late Thursday night through Friday afternoon.
- Expiration: The warning is currently set to expire on Friday, February 20, at 5:00 PM AKST.
- Outlook: Conditions are expected to gradually subside on Saturday with winds decreasing to 30 knots and seas falling to 11 feet.
Original source: NOAA Official Notice ↗
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