Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
9 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 25 September 2026 at 17:00 UTC. It is kept here as a record.
It is the 10th strongest of the 14 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tropical Storm Warning issued September 24 at 11:00PM HST by NWS Honolulu HI
Nearby, since 15 March 2026
- September 25, 2026 · score 34 · 0.0 km
- September 24, 2026 · score 34 · 0.0 km
- September 23, 2026 · score 34 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. 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 |
| Legacy data-support index | 0.61/1 |
| Coordinates | 19.5517, -155.5863 |
| Nearest City | Hilo (56 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-25T09:00:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.4ddc2b465ec1aed8541c9a2013ad70c4bced1b08.024.2 |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-09-25T09:00:00.000Z.
First archived: 2026-09-25T09:03:17.271Z. Material modification: 2026-09-25T10:25:39.091Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-25T10:25:39.091Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-25T10:14:04.942Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-25T10:03:18.096Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-25T09:52:28.043Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-25T09:36:25.943Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-25T09:31:03.237Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-25T09:20:17.663Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-25T09:14:03.620Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
2026-09-25T09:08:43.474Z · data_change
Index 16 → 16; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Tropical Storm Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Big Island North; Big Island Summit; Big Island South and 4 more areas |
| Headline | Tropical Storm Warning issued September 24 at 11:00PM HST by NWS Honolulu HI |
| Expires | 2026-09-25T07:00:00-10:00 |
| SenderName | NWS Honolulu HI |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4ddc2b465ec1aed8541c9a2013ad70c4bced1b08.024.2","noaa_urn:oid:2.49.0.1.840.0.4ddc2b465ec1aed8541c9a2013ad70c4bced1b08.027.2","noaa_urn:oid:2.49.0.1.840.0.4ddc2b465ec1aed8541c9a2013ad70c4bced1b08.021.2","noaa_urn:oid:2.49.0.1.840.0.4ddc2b465ec1aed8541c9a2013ad70c4bced1b08.023.2","noaa_urn:oid:2.49.0.1.840.0.4ddc2b465ec1aed8541c9a2013ad70c4bced1b08.025.2","noaa_urn:oid:2.49.0.1.840.0.4ddc2b465ec1aed8541c9a2013ad70c4bced1b08.022.2","noaa_urn:oid:2.49.0.1.840.0.4ddc2b465ec1aed8541c9a2013ad70c4bced1b08.020.2"] |
Safety Information
During a tropical cyclone: shelter in a sturdy interior room away from windows. Stock emergency supplies including water, food, medications, and flashlights. Do not venture outdoors during the eye of the storm. After passage, beware of downed power lines, flooding, and structural damage. Follow official guidance for evacuation and shelter.
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.
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