Right now
The most recent data we hold from NOAA arrived 1 minute ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 7 July 2026 at 20:00 UTC. It is kept here as a record.
No stronger detection stands among the 12 recorded within 20 km of this point since 30 April 2026 — 2 others scored the same. 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 7 at 3:32PM EDT until July 7 at 4:00PM EDT by NWS Wilmington NC
Urban PEI: 50,987 within a heuristic 50 km radius; not unique people.
Nearby, since 30 April 2026
- July 7, 2026 · score 32 · 0.0 km
- August 13, 2026 · score 22 · 14.0 km
- August 3, 2026 · score 28 · 16.2 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 32 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 32 / 100 |
| Legacy data-support index | 0.85/1 |
| Coordinates | 33.3400, -79.1531 |
| Nearest City | Socastee (40 km) |
| Urban exposure index (PEI) | 51.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-07T19:32:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.246f574404721562b254babb7887b094 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-07T19:32:00.000Z.
First archived: 2026-07-07T19:55:06.926Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Little River Inlet to Murrells Inlet SC out 20 NM; Coastal waters from South Santee River to Edisto Beach SC out 20 NM |
| Headline | Special Marine Warning issued July 7 at 3:32PM EDT until July 7 at 4:00PM EDT by NWS Wilmington NC |
| Expires | 2026-07-07T16:00:00-04:00 |
| SenderName | NWS Wilmington NC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.246f574404721562b254babb7887b094de2924ed.001.1","noaa_urn:oid:2.49.0.1.840.0.b446b661f6cbff6d5195656bf66d78df30f01936.001.1"] |
| Iem TypeSummary | D |
| Iem City | 3 W Briarcliffe Acres |
| Iem County | Horry |
| Iem State | SC |
| Iem Wfo | ILM |
| Iem Remark | *** 1 INJ *** A tree fell on a vehicle injuring one person. |
| MergedSources | [{"id":"iem_D_33.770_-78.800_1783448460000","source":"iem","severity":"low","severityValue":25,"timestamp":1783448460000,"latitude":33.77,"longitude":-78.8}] |
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 8 March 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.
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