Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is in it.
4 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert is in force until 21 September 2026, 22:15 UTC.
It is the 8th strongest of the 16 detections recorded within 20 km of this point since 1 April 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 September 21 at 5:15PM EDT until September 21 at 6:15PM EDT by NWS Blacksburg VA
Urban PEI: 83,561 within a heuristic 50 km radius; not unique people.
Nearby, since 1 April 2026
- September 21, 2026 · score 45 · 25.8 km
How we know
3 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 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) | 32 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 37.3330, -80.8511 |
| Nearest City | Radford (33 km) |
| Urban exposure index (PEI) | 83.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-21T21:15:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.089f457ae41ad8c239690c7845ee2bd77fa23e30.001.1 |
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: 2026-09-21T21:15:00.000Z.
First archived: 2026-09-21T21:19:57.074Z. 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 | Giles, VA; Mercer, WV; Monroe, WV; Summers, WV; Caswell, NC; Rockingham, NC; Halifax, VA; Henry, VA; Pittsylvania, VA; City of Danville, VA; Forsyth, NC; Guilford, NC and 3 more areas |
| Headline | Severe Thunderstorm Warning issued September 21 at 5:15PM EDT until September 21 at 6:15PM EDT by NWS Blacksburg VA |
| Expires | 2026-09-21T18:15:00-04:00 |
| SenderName | NWS Blacksburg VA |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.089f457ae41ad8c239690c7845ee2bd77fa23e30.001.1","noaa_urn:oid:2.49.0.1.840.0.dede6ede167ebeb1d13a5b1a00960d6ec639255e.001.1","noaa_urn:oid:2.49.0.1.840.0.b10bf1972f2a8b85503c373a8a18837712a4803d.001.1","noaa_urn:oid:2.49.0.1.840.0.2f973be2fd8e9c08f2b54b32989669a93b42308e.001.1","noaa_urn:oid:2.49.0.1.840.0.492e5787636309e73b4d4ca8674586355d6d9d92.001.1","noaa_urn:oid:2.49.0.1.840.0.06faa34ca510d337ef4b769306ab8af3c832f420.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 5 SSE Pilot |
| Spc County | Floyd |
| Spc State | VA |
| Spc Comments | Thunderstorm winds blew many trees and limbs down around the intersection of Christiansburg Pike and Camp Creek Drive. There are several power outages in the same porti (RNK) |
| Iem TypeSummary | D |
| Iem City | 1 WNW Laurel Branch |
| Iem County | Monroe |
| Iem State | WV |
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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