This alert expired on 15 March 2026 at 18:00 UTC. It is kept here as a record.
Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued March 15 at 6:00AM HST until March 15 at 8:00AM HST by NWS Honolulu HI
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 57 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 57% |
| Coordinates | 19.1106, -154.7976 |
| Nearest City | Hilo (75 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-15T16:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special-Marine-Warning_noaa_urn-oid-2_49_0_1_840_0_34d099ff816b046bfed9ab4de3bb79d9 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Big Island Windward Waters; Big Island Leeward Waters; Big Island Southeast Waters; Big Island Windward Waters; Big Island Southeast Waters |
| Headline | Special Marine Warning issued March 15 at 6:00AM HST until March 15 at 8:00AM HST by NWS Honolulu HI |
| Expires | 2026-03-15T08:00:00-10:00 |
| SenderName | NWS Honolulu HI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.34d099ff816b046bfed9ab4de3bb79d9910f604d.001.1","noaa_urn:oid:2.49.0.1.840.0.638007e66ac4cd19bc36286440fdefef5155df88.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.