Heavy Freezing Spray Warning Issued for Castle Cape to Cape Tolstoi
The National Weather Service has issued a Heavy Freezing Spray Warning for the Alaska Peninsula waters from Castle Cape to Cape Tolstoi, effective Saturday evening through Sunday.
Alert Details
The National Weather Service (NWS) Anchorage AK has issued a Heavy Freezing Spray Warning for the coastal waters of Southwest Alaska. This alert (NWS code UPW) is issued when conditions are favorable for significant ice accumulation on vessels.
Affected Areas
The warning specifically covers the maritime region from Castle Cape to Cape Tolstoi, extending out to 15 nautical miles (UGC: PKZ752).
What You Should Do
According to the NWS, the recommended response is to avoid the area. Mariners should be aware that heavy freezing spray can cause rapid ice accumulation on ships, which can significantly impact vessel stability and safety.
Expected Conditions
Conditions in the warning area are expected to be hazardous for maritime travel:
- Winds: Northwest winds reaching up to 40 knots tonight, decreasing slightly to 35 knots on Sunday.
- Seas: Wave heights are forecast at 7 feet tonight and 6 feet on Sunday.
- Visibility: Areas of blowing snow are expected to accompany the freezing spray.
- Hazards: Heavy freezing spray is forecast to develop Saturday night and persist through Sunday.
Timeline
The Heavy Freezing Spray Warning is effective starting at 5:00 PM AKST on Saturday, March 7, 2026. The warning is currently scheduled to expire at 5:00 PM AKDT on Sunday, March 8, 2026.
Source: NOAA Official Notice
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