This alert expired on 15 March 2026 at 06:00 UTC. It is kept here as a record.
No stronger detection stands among the 15 recorded within 20 km of this point since 14 March 2026 — 9 others scored the same. Another comparable one was recorded here earlier the same day. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued March 14 at 5:22PM HST until March 14 at 8:00PM HST by NWS Honolulu HI
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 63 % 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 | 63% |
| Coordinates | 19.2900, -155.3494 |
| Nearest City | Hilo (56 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-15T03:22:00.000Z |
| Source | https://api.weather.gov/alerts/urn-oid-2_49_0_1_840_0_18c3efa8832c71b31d72a3f62e154d496999c55c_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 14 at 5:22PM HST until March 14 at 8:00PM HST by NWS Honolulu HI |
| Expires | 2026-03-14T20:00:00-10:00 |
| SenderName | NWS Honolulu HI |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | Kawa Flats |
| Iem County | Hawaii |
| Iem State | HI |
| Iem Wfo | HFO |
| Iem Remark | Water over Highway 11 in multiple locations. Towns of Naalehu and Pahala cut off. |
| MergedSources | [{"id":"iem_F_19.120_-155.530_1773534000000","source":"iem","severity":"low","severityValue":25,"timestamp":1773534000000,"latitude":19.12,"longitude":-155.53}] |
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.