This alert expired on 18 July 2026 at 22:45 UTC. It is kept here as a record.
No stronger detection stands among the 24 recorded within 20 km of this point since 16 March 2026 — 12 others scored the same. The last comparable one was on 12 July 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 18 at 4:54PM CDT until July 18 at 5:45PM CDT by NWS Mobile AL
An estimated 319,584 people live within 50 km of this point.
Nearby, since 16 March 2026
- March 16, 2026 · score 43 · 0.8 km
- July 12, 2026 · score 43 · 4.8 km
- March 16, 2026 · score 43 · 11.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 79 % 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 | 79% |
| Coordinates | 30.3619, -87.3912 |
| Nearest City | Myrtle Grove (10 km) |
| Population Exposed | 319.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-18T21:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.a7385dfc12571b9c273aa90101510742 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Mississippi Sound; Coastal waters from Pensacola FL to Pascagoula MS out 20 NM; Pensacola Bay Area including Santa Rosa Sound; Western Choctawhatchee Bay; Eastern Choctawhatchee Bay; Coastal waters from Okaloosa-Walton County Line to Pensacola FL out 20 NM; Waters from Okaloosa-Walton County Line to Pensacola FL from 20 to 60 NM |
| Headline | Special Marine Warning issued July 18 at 4:54PM CDT until July 18 at 5:45PM CDT by NWS Mobile AL |
| Expires | 2026-07-18T17:45:00-05:00 |
| SenderName | NWS Mobile AL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a7385dfc12571b9c273aa901015107429b0396aa.001.1","noaa_urn:oid:2.49.0.1.840.0.28db5e19875105cea72b822fd2dae79838941c8e.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.
Want to know when something happens near Myrtle Grove?
Calamity.live data shows a weather event with CalamityScore 43/100, near Myrtle Grove (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.