Right now
The most recent data we hold from NOAA arrived 2 minutes 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 29 July 2026 at 01:33 UTC. It is kept here as a record.
It is the 6th strongest of the 63 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 28 at 9:23PM EDT until July 28 at 9:30PM EDT by NWS Raleigh NC
Urban PEI: 925,501 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- March 17, 2026 · score 43 · 14.3 km
- September 4, 2026 · score 67 · 14.6 km
- July 19, 2026 · score 52 · 25.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 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) | 48 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 36.8223, -76.8424 |
| Nearest City | South Suffolk (25 km) |
| Urban exposure index (PEI) | 925.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-29T01:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c6d6613841dbab14ef757d4307e5ec7a |
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: 2026-07-29T01:23:00.000Z.
First archived: 2026-07-29T01:28:09.454Z. 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 | Halifax, NC; City of Chesapeake, VA; City of Norfolk, VA; City of Portsmouth, VA; City of Virginia Beach, VA; Durham, NC; Franklin, NC; Wake, NC and 3 more areas |
| Headline | Severe Thunderstorm Warning issued July 28 at 9:23PM EDT until July 28 at 9:30PM EDT by NWS Raleigh NC |
| Expires | 2026-07-28T21:33:00-04:00 |
| SenderName | NWS Raleigh NC |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c6d6613841dbab14ef757d4307e5ec7a688d4543.001.1","noaa_urn:oid:2.49.0.1.840.0.612bd9ff9361fae919826b31d8d9561eaf0367fe.002.1","noaa_urn:oid:2.49.0.1.840.0.280d5b93e9a86032c8cf0c3a912129a5ef5f50cf.002.1","noaa_urn:oid:2.49.0.1.840.0.a8e4378c14adbc4a5d05fc4a2c45dce760e79376.001.1","noaa_urn:oid:2.49.0.1.840.0.3068484f3d859ddb0c4ab3734050906ee480811c.001.1","noaa_urn:oid:2.49.0.1.840.0.ff1b1b69ed6c311af4f4e1e3818617dd572f6e2c.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 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.
Want to know when something happens near South Suffolk?