Right now
The most recent data we hold from NOAA arrived 14 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
51 other detections within 20 km in the last 24 hours, the nearest 4 km from here.
This alert expired on 18 September 2026 at 22:30 UTC. It is kept here as a record.
It is the 281st strongest of the 440 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 6 September 2026. 218 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 18 at 5:46PM EDT until September 18 at 6:30PM EDT by NWS Raleigh NC
Urban PEI: 1,529,428 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- September 18, 2026 · score 46 · 4.0 km
- September 6, 2026 · score 46 · 4.4 km
- July 8, 2026 · score 52 · 4.9 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 46 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) | 46 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 35.8180, -78.5440 |
| Nearest City | Raleigh (10 km) |
| Urban exposure index (PEI) | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-18T21:46:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f0f1eff7bfcec0c79f9074c9417903ac73acba37.001.1 |
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: 2026-09-18T21:46:00.000Z.
First archived: 2026-09-18T22:04:02.353Z. 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 | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Johnston, NC; Wake, NC |
| Headline | Severe Thunderstorm Warning issued September 18 at 5:46PM EDT until September 18 at 6:30PM EDT by NWS Raleigh NC |
| Expires | 2026-09-18T18:30:00-04:00 |
| SenderName | NWS Raleigh NC |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 2 SE Falcon |
| Spc County | Sampson |
| Spc State | NC |
| Spc Comments | Tree down on Autry Mill Road. (RAH) |
| Iem TypeSummary | D |
| Iem City | 3 E Benson |
| Iem County | Johnston |
| Iem State | NC |
| Iem Wfo | RAH |
| Iem Remark | Tree down on the 500 block of Unity Church Road. |
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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