Special Marine Warning Issued for Alenuihaha Channel and Big Island Leeward Waters
This alert is no longer in effect.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).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
The National Weather Service has issued a Special Marine Warning for Hawaii marine waters until 2:15 PM HST due to severe thunderstorms capable of producing 50-knot wind gusts.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Hawaii Marine Waters
- Issued
- April 6, 2026
- Issuing authority
- NWS Honolulu HI
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Hawaii Marine Waters.
Alert Details
The National Weather Service in Honolulu HI has issued a Special Marine Warning for the Alenuihaha Channel and Big Island Leeward Waters. This alert is effective immediately and remains in place until 2:15 PM HST on March 12, 2026.
Affected Areas
The warning covers the following maritime regions:
- Alenuihaha Channel
- Big Island Leeward Waters
Specific locations and landmarks impacted include Honokohau Harbor, Upolu Point, Keahole Point, and several FAD Buoys including OT, C, XX, UU, and ZZ.
Expected Conditions
At 12:16 PM HST, radar indicated severe thunderstorms located approximately 35 nautical miles west of FAD Buoy F (or 47 nautical miles west of Kahaluu-Keauhou). The storm system is moving northeast at 20 knots.
- Hazards: Wind gusts in excess of 50 knots.
- Impacts: High winds may cause significant structural damage to boats. Suddenly higher waves and steep seas could cause small craft to capsize. Blinding downpours are also expected.
What You Should Do
Mariners are urged to take immediate precautions:
- Prepare for gusty winds and fast-building, steep seas.
- Stay low or go below deck to avoid hazards.
- Ensure all passengers and crew members are wearing life jackets.
- Seek safe harbor if possible until conditions improve.
Timeline
- Issued: 12:16 PM HST, March 12
- Effective: 12:16 PM HST, March 12
- Expires: 2:15 PM HST, March 12
Original source: NOAA Official Notice ↗
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