This alert expired on 20 July 2026 at 22:30 UTC. It is kept here as a record.
It is the 10th strongest of the 14 detections recorded within 20 km of this point since 23 May 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 20 at 6:20PM EDT until July 20 at 6:30PM EDT by NWS Jacksonville FL
An estimated 514,497 people live within 50 km of this point.
Nearby, since 23 May 2026
- June 27, 2026 · score 43 · 11.6 km
- May 23, 2026 · score 43 · 12.6 km
- June 30, 2026 · score 48 · 25.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 41 out of 100, at 80 % 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) | 41 / 100 |
| Our confidence | 80% |
| Coordinates | 29.0218, -81.5966 |
| Nearest City | Eustis (21 km) |
| Population Exposed | 514.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-20T22:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.354ad192447c88f055b3c90fbd0e92cd |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM; Coastal waters from St. Augustine to Flagler Beach FL out 20 NM; Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM; Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM; Volusia-Brevard County Line to Sebastian Inlet 0-20 nm |
| Headline | Special Marine Warning issued July 20 at 6:20PM EDT until July 20 at 6:30PM EDT by NWS Jacksonville FL |
| Expires | 2026-07-20T18:30:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.354ad192447c88f055b3c90fbd0e92cd68dc14af.001.1","noaa_urn:oid:2.49.0.1.840.0.19ea866af6b5d781ec8019d49cee83db54d25f45.001.1","noaa_urn:oid:2.49.0.1.840.0.f530b41796b2a566befdc4b81395794e18f91657.001.1"] |
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 41/100, near Eustis (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.