Heavy Freezing Spray Warning Issued for Port Heiden to Nelson Lagoon Through Monday Morning
This alert is no longer in effect.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 Heavy Freezing Spray Warning for Southwest Alaska coastal waters, with extreme accumulation rates of 4 cm per hour expected.
Read this weather record in 30 seconds
- Record type
- Heavy Freezing Spray Warning
- Affected area
- Southwest Alaska
- Issued
- April 6, 2026
- Issuing authority
- NWS Anchorage AK
The warning type, named area, and issue time define this record. Confirm all three against the original agency notice before treating it as current.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Southwest Alaska.
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 is classified as severe, indicating a likely and expected threat to maritime operations in the region.
Affected Areas
The warning specifically covers the maritime region from Port Heiden to Nelson Lagoon, extending from 15 to 60 nautical miles (NM) offshore. This includes the Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out.
What You Should Do
Mariners are advised to avoid the warning area. Extreme freezing spray can rapidly accumulate on vessels at a rate of 4 cm per hour or greater, which can significantly impact vessel stability and safety.
Expected Conditions
- Freezing Spray: Heavy to extreme freezing spray is expected, with accumulation rates of 4 cm per hour or greater.
- Wind: Northwest winds are forecast at 40 knots tonight, shifting to 35 knots on Sunday and Sunday night.
- Seas: In ice-free waters, sea heights are expected to reach 11 feet tonight, 10 feet on Sunday, and 9 feet on Sunday night.
Timeline
The Heavy Freezing Spray Warning becomes effective at 6:00 AM AKST on Sunday, March 8, 2026. The warning is currently set to expire at 6:00 AM AKDT on Monday, March 9, 2026.
Original source: NOAA Official Notice ↗
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