This alert expired on 22 June 2026 at 00:00 UTC. It is kept here as a record.
No stronger detection stands among the 63 recorded within 20 km of this point since 12 March 2026 — 40 others scored the same. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 21 at 7:07PM EDT until June 21 at 8:00PM EDT by NWS Melbourne FL
An estimated 306,283 people live within 50 km of this point.
Nearby, since 12 March 2026
- May 12, 2026 · score 43 · 4.4 km
- July 17, 2026 · score 43 · 4.8 km
- August 3, 2026 · score 37 · 5.1 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 90 % 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) | 43 / 100 |
| Our confidence | 90% |
| Coordinates | 27.3861, -80.2572 |
| Nearest City | Fort Pierce (10 km) |
| Population Exposed | 306.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-21T23:07:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.e59dfa6bf76923220c9a6a93a0f4c852 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Sebastian Inlet to Jupiter Inlet 0-20 nm; Volusia-Brevard County Line to Sebastian Inlet 0-20 nm; Sebastian Inlet to Jupiter Inlet 0-20 nm |
| Headline | Special Marine Warning issued June 21 at 7:07PM EDT until June 21 at 8:00PM EDT by NWS Melbourne FL |
| Expires | 2026-06-21T20:00:00-04:00 |
| SenderName | NWS Melbourne FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e59dfa6bf76923220c9a6a93a0f4c852a6520489.001.1","noaa_urn:oid:2.49.0.1.840.0.4f5ce1f577ada8d065aa908c69cfc1b128fafca7.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 41 |
| Iem Unit | MPH |
| Iem City | 1 WNW Treasure Coast Ai |
| Iem County | St. Lucie |
| Iem State | FL |
| Iem Wfo | MLB |
| Iem Remark | The ASOS at the Treasure Coast International Airport measured a wind gust of 41MPH/36KTS from the west. |
| MergedSources | [{"id":"iem_G_27.650_-80.420_1782082140000","source":"iem","severity":"low","severityValue":25,"timestamp":1782082140000,"latitude":27.65,"longitude":-80.42},{"id":"iem_G_27.500_-80.380_1782081780000","source":"iem","severity":"low","severityValue":25,"timestamp":1782081780000,"latitude":27.5,"longitude":-80.38}] |
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 43/100, near Fort Pierce (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.