This alert expired on 17 March 2026 at 03:45 UTC. It is kept here as a record.
No stronger detection stands among the 9 recorded within 20 km of this point since 14 March 2026 — 6 others scored the same. The last comparable one was on 15 March 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued March 16 at 3:48PM HST until March 16 at 5:45PM HST by NWS Honolulu HI
Nearby, since 14 March 2026
- March 17, 2026 · score 22 · 0.0 km
- March 14, 2026 · score 22 · 11.0 km
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 58 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 58% |
| Coordinates | 19.8040, -155.9265 |
| Nearest City | Hilo (88 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-17T01:48:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5a2e67f69c5fa0864531c50f4f39c01e21a6955b.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Hawaii in Hawaii, HI |
| Headline | Flash Flood Warning issued March 16 at 3:48PM HST until March 16 at 5:45PM HST by NWS Honolulu HI |
| Expires | 2026-03-16T17:45:00-10:00 |
| SenderName | NWS Honolulu HI |
| HasExactCoords | true |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
Series begins 8 March 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.
Want to know when something happens in this area?
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 185 scientific monitoring sources.