Right now
The most recent data we hold from NDBC arrived 70 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
Reported by NDBC 31 days ago.
It is one of only 3 we have recorded within 20 km of this point since 3 September 2026.
What the source measured
NDBC reported: Hazardous conditions at NDBC buoy 51002: waves 4.1m.
This is the lowest wave height we have recorded at this point, over 9 readings since 3 September 2026 — the previous range was 4.1 m to 4.4 m.
Nearby, since 3 September 2026
- September 28, 2026 · 0.0 km
- September 27, 2026 · 0.0 km
- September 4, 2026 · score 16 · 0.0 km
How we know
One source: NDBC. 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
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.
Event data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Legacy data-support index | 0.50/1 |
| Coordinates | 17.0700, -157.7550 |
| Nearest city | Hilo (408 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact tier | minor |
| Timestamp | 2026-09-03T11:09:00.000Z |
| Source | https://www.ndbc.noaa.gov/station_page.php?station=51002 |
| Licence | US public domain · NOAA National Data Buoy Center |
Physical priority index · v4 (historical). 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: ndbc. Occurrence: 2026-09-03T11:09:00.000Z.
First archived: 2026-09-03T11:52:46.838Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score breakdown
Technical details
| StationId | 51002 |
| WaveHeightM | 4.1 |
| WindSpeedMs | 11 |
| PressureHpa | 1010.6 |
Safety information
What to do in dangerous seas
Three things first, then what to do before, during and after. From the US National Weather Service.
For this reportSevere Weather · United States
Stay out of rough water
High waves and strong currents can pull even strong swimmers out. Swim only where there are lifeguards.
NWSCaught in a current? Swim sideways
Do not fight it: swim parallel to the shore until you are out of it, or float and wave for help.
NWSKeep off jetties and rocks
Big waves sweep people off piers, breakwaters and rocks.
NWS
Before, during, after. Here it is “after”.
Before · Before going to the sea
Check the forecast
The beach and marine forecast, and the flags on the beach.
Ask the lifeguards
They know today’s currents.
National Weather Service
During · When the sea is rough
Small boats stay in port
Follow the harbour master and the marine warnings.
Helping someone
Call a lifeguard or the emergency number; throw something that floats, do not jump in.
National Weather Service
After · When the sea calms
Currents last
They can stay strong after the waves drop.
National Weather Service
Questions people ask
How do I get out of a rip current?
Stay calm and do not swim against it. Swim parallel to the shore until you are free, then swim back at an angle; or float and wave for help. Source: US National Weather Service.
Is a calm, sunny day safe?
Not always: rip currents often form on calm, sunny days. Swim near lifeguards. Source: US National Weather Service.
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