Right now
The most recent data we hold from NOAA arrived 23 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.
This alert expired on 20 June 2026 at 22:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 52 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 20 at 4:54PM EDT until June 20 at 6:30PM EDT by NWS Melbourne FL
Urban PEI: 421,913 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- September 6, 2026 · score 37 · 4.1 km
- September 5, 2026 · score 37 · 4.1 km
- June 20, 2026 · score 43 · 5.8 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 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 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) | 43 / 100 |
| Legacy data-support index | 0.88/1 |
| Coordinates | 27.2607, -80.1564 |
| Nearest City | Stuart (11 km) |
| Urban exposure index (PEI) | 421.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-20T20:54:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.487c5cad8f5362953428ac7486c088967525223c.001.1 |
Physical priority index · v1. 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: 2026-06-20T20:54:00.000Z.
First archived: 2026-06-20T21:42:44.068Z. 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
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Sebastian Inlet to Jupiter Inlet 0-20 nm; Sebastian Inlet to Jupiter Inlet 20-60 nm |
| Headline | Special Marine Warning issued June 20 at 4:54PM EDT until June 20 at 6:30PM EDT by NWS Melbourne FL |
| Expires | 2026-06-20T18:30:00-04:00 |
| SenderName | NWS Melbourne FL |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 39 |
| Iem Unit | MPH |
| Iem City | 2 SSW Roseland |
| Iem County | Indian River |
| Iem State | FL |
| Iem Wfo | MLB |
| Iem Remark | Sebastian Municipal Airport measured a peak wind gust of 39MPH/34KT from the northwest at 3:22 PM. |
| MergedSources | [{"id":"iem_G_27.270_-80.270_1781987040000","source":"iem","severity":"low","severityValue":25,"timestamp":1781987040000,"latitude":27.27,"longitude":-80.27},{"id":"iem_G_27.820_-80.500_1781983320000","source":"iem","severity":"low","severityValue":25,"timestamp":1781983320000,"latitude":27.82,"longitude":-80.5}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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.
Review the area, threshold and delivery channel in your account.
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