This alert expired on 12 May 2026 at 22:45 UTC. It is kept here as a record.
It is the 7th strongest of the 22 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 12 at 5:48PM EDT until May 12 at 6:45PM EDT by NWS Melbourne FL
An estimated 91,257 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 13, 2026 · score 34 · 10.5 km
- March 16, 2026 · score 22 · 13.7 km
- June 23, 2026 · score 34 · 17.3 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 91% |
| Coordinates | 28.9088, -80.5100 |
| Nearest City | Edgewater (39 km) |
| Population Exposed | 91.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-12T21:48:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8b875fff4cf96557bf73badd71c699da6957a5a8.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Flagler Beach to Volusia-Brevard County Line 0-20 nm; Volusia-Brevard County Line to Sebastian Inlet 0-20 nm |
| Headline | Special Marine Warning issued May 12 at 5:48PM EDT until May 12 at 6:45PM EDT by NWS Melbourne FL |
| Expires | 2026-05-12T18:45:00-04:00 |
| SenderName | NWS Melbourne FL |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 1 NW Oviedo |
| Iem County | Seminole |
| Iem State | FL |
| Iem Wfo | MLB |
| Iem Remark | [Delayed report] Media photos and video of quarter sized (1.00 in.) hail in the Oviedo area. |
| MergedSources | [{"id":"iem_M_28.460_-80.570_1778605200000","source":"iem","severity":"low","severityValue":25,"timestamp":1778605200000,"latitude":28.46,"longitude":-80.57},{"id":"iem_M_29.050_-80.900_1778620380000","source":"iem","severity":"low","severityValue":25,"timestamp":1778620380000,"latitude":29.05,"longitude":-80.9},{"id":"iem_M_28.520_-80.640_1778602200000","source":"iem","severity":"low","severityValue":25,"timestamp":1778602200000,"latitude":28.52,"longitude":-80.64},{"id":"iem_H_28.630_-81.210_1778602860000","source":"iem","severity":"low","severityValue":25,"timestamp":1778602860000,"latitude":28.63,"longitude":-81.21},{"id":"iem_H_28.680_-81.220_1778601660000","source":"iem","severity":"low","severityValue":25,"timestamp":1778601660000,"latitude":28.68,"longitude":-81.22}] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.