Special Marine Warning Issued for Big Island Windward Waters Until 2:15 PM HST
This alert is no longer in effect.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 Special Marine Warning for Big Island Windward Waters as severe thunderstorms capable of producing waterspouts move through the region.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Big Island Windward Waters, Hawaii
- Issued
- April 6, 2026
- Issuing authority
- NWS Honolulu
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 Big Island Windward Waters, Hawaii.
Alert Details
The National Weather Service in Honolulu HI has issued a Special Marine Warning for the Big Island Windward Waters. The alert was issued at 12:08 PM HST on March 13, 2026, after radar indicated severe thunderstorms in the area capable of producing hazardous conditions.
Affected Areas
The warning specifically impacts the Big Island Windward Waters. Key locations and landmarks within the warning zone include:
- Hilo Harbor
- Cape Kumukahi
- FAD Buoys HK, E, D, G, SS, and KH
What You Should Do
Mariners and residents in the affected area should take the following precautions immediately:
- Seek Safe Harbor: Waterspouts can easily overturn boats and create locally hazardous seas. Move to a safe location immediately.
- Safety Onboard: If you are on a vessel, stay low or go below deck. Ensure all passengers and crew are wearing life jackets.
- Prepare for Hazards: Be ready for gusty winds, steep and fast-building seas, and blinding downpours that can significantly reduce visibility.
Expected Conditions
As of 12:07 PM HST, severe thunderstorms were located along a line moving northeast at 20 knots. The primary hazards associated with this system include:
- Waterspouts: Sudden formation of waterspouts that can overturn vessels.
- Wind: Gusts of 34 knots or greater.
- Seas: Suddenly higher waves and steep sea conditions.
- Precipitation: Blinding downpours.
Timeline
The Special Marine Warning is effective immediately as of 12:08 PM HST and is currently scheduled to expire at 2:15 PM HST on March 13, 2026.
Original source: NOAA Official Notice ↗
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