This alert expired on 12 May 2026 at 17:30 UTC. It is kept here as a record.
No stronger detection stands among the 44 recorded within 20 km of this point since 16 March 2026 — 19 others scored the same. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 12 at 12:56PM EDT until May 12 at 1:30PM EDT by NWS Melbourne FL
An estimated 1,186,753 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 6, 2026 · score 46 · 1.4 km
- July 17, 2026 · score 52 · 3.6 km
- July 6, 2026 · score 52 · 4.5 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 52 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) | 52 / 100 |
| Our confidence | 91% |
| Coordinates | 28.5775, -81.0167 |
| Nearest City | Alafaya (19 km) |
| Population Exposed | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-12T16:56:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.1001fb2868309f26f02cdeeea0d64af0 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Brevard, FL; Orange, FL; Seminole, FL; Orange, FL; Seminole, FL |
| Headline | Severe Thunderstorm Warning issued May 12 at 12:56PM EDT until May 12 at 1:30PM EDT by NWS Melbourne FL |
| Expires | 2026-05-12T13:30:00-04:00 |
| SenderName | NWS Melbourne FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1001fb2868309f26f02cdeeea0d64af00feadbf1.001.1","noaa_urn:oid:2.49.0.1.840.0.cb4116d4571b4cb3baaa1a6de5c771f8fb50c89f.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 2 N Univ Central Florid |
| Iem County | Seminole |
| Iem State | FL |
| Iem Wfo | MLB |
| Iem Remark | Reports from the public and pictures from the media of quarter sized (1.00 in.) hail in the Oviedo area. |
| MergedSources | [{"id":"iem_H_28.740_-81.360_1778599620000","source":"iem","severity":"low","severityValue":25,"timestamp":1778599620000,"latitude":28.74,"longitude":-81.36},{"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}] |
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 52/100, near Alafaya (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.