Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
15 other detections within 20 km in the last 24 hours, the nearest 2 km from here.
This alert expired on 18 September 2026 at 20:30 UTC. It is kept here as a record.
It is the 35th strongest of the 66 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 18 at 3:44PM EDT until September 18 at 4:30PM EDT by NWS Raleigh NC
Urban PEI: 627,680 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- September 18, 2026 · score 41 · 1.7 km
- March 16, 2026 · score 48 · 5.8 km
- September 18, 2026 · score 41 · 11.3 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 41 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 41 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 35.6796, -80.2451 |
| Nearest City | Lexington (16 km) |
| Urban exposure index (PEI) | 627.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-18T19:44:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f6ea24ce3c3bae7e5201d11945d75f8d2a85464f.001.1 |
Physical priority index · v5. 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: 2026-09-18T19:44:00.000Z.
First archived: 2026-09-18T19:47:16.001Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-18T19:52:59.566Z · data_change
Index 41 → 41; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Chatham, NC; Lee, NC; Randolph, NC; Alexander, NC; Catawba, NC; Iredell, NC; Cabarrus, NC; Rowan, NC |
| Headline | Severe Thunderstorm Warning issued September 18 at 3:44PM EDT until September 18 at 4:30PM EDT by NWS Raleigh NC |
| Expires | 2026-09-18T16:30:00-04:00 |
| SenderName | NWS Raleigh NC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f6ea24ce3c3bae7e5201d11945d75f8d2a85464f.001.1","noaa_urn:oid:2.49.0.1.840.0.49b85639de76e744c12c5f16efe4df91fe06e897.001.1","noaa_urn:oid:2.49.0.1.840.0.e50396cffb5a06992fe13377bd5345c8fa7c0c6d.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 3 WNW Fork Church |
| Spc County | Davie |
| Spc State | NC |
| Spc Comments | 911 call center reported trees down on Chestnut Tr. (GSP) |
| Iem TypeSummary | D |
| Iem City | 3 WNW Fork Church |
| Iem County | Davie |
| Iem State | NC |
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.
Review the area, threshold and delivery channel in your account.
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