Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is in it.
4 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 7 September 2026 at 03:30 UTC. It is kept here as a record.
It is the 15th strongest of the 32 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 6 at 4:37PM HST until September 6 at 5:30PM HST by NWS Honolulu HI
Nearby, since 12 March 2026
- March 12, 2026 · score 22 · 9.7 km
- March 12, 2026 · score 22 · 10.2 km
- May 16, 2026 · score 22 · 12.1 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 67 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 67% |
| Coordinates | 21.4974, -157.8211 |
| Nearest City | Kaneohe (11 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-07T02:37:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.77681d08eedeae4798bd9412bc99c2f9a28cfa1b.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Oahu in Honolulu, HI |
| Headline | Flash Flood Warning issued September 6 at 4:37PM HST until September 6 at 5:30PM HST by NWS Honolulu HI |
| Expires | 2026-09-06T17:30:00-10:00 |
| SenderName | NWS Honolulu HI |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | Waiahole |
| Iem County | Honolulu |
| Iem State | HI |
| Iem Wfo | HFO |
| Iem Remark | Oahu Dept of Emergency Management reported closure of Kamehameha Hwy in the Waiahole Stream and Waikane Stream area. Police reported up to 2.5 feet of water over the road. |
| MergedSources | [{"id":"iem_F_21.490_-157.850_1788742800000","source":"iem","severity":"low","severityValue":25,"timestamp":1788742800000,"latitude":21.49,"longitude":-157.85}] |
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 near Kaneohe?
Calamity.live data shows a weather event with CalamityScore 16/100, near Kaneohe (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.