This alert expired on 10 August 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 130 recorded within 20 km of this point since 17 March 2026 — 37 others scored the same. Another comparable one was recorded here earlier the same day. 20 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 10 at 6:03PM EDT until August 10 at 6:15PM EDT by NWS Mount Holly NJ
An estimated 511,761 people live within 50 km of this point.
Nearby, since 17 March 2026
- June 29, 2026 · score 48 · 5.4 km
- June 28, 2026 · score 48 · 5.4 km
- August 10, 2026 · score 48 · 6.0 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 48 / 100 |
| Our confidence | 90% |
| Coordinates | 37.5558, -77.4769 |
| Nearest City | Richmond (2 km) |
| Population Exposed | 511.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-10T22:03:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c5c597268a641e0c2bb64dd2ebc6abcb |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Kent, DE; New Castle, DE; Sussex, DE; Caroline, MD; Kent, MD; Queen Anne's, MD; Talbot, MD; Cumberland, NJ; Calvert, MD; St. Marys, MD; Charles, MD; St. Marys, MD; King George, VA and 6 more areas |
| Headline | Severe Thunderstorm Warning issued August 10 at 6:03PM EDT until August 10 at 6:15PM EDT by NWS Mount Holly NJ |
| Expires | 2026-08-10T18:15:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 10 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c5c597268a641e0c2bb64dd2ebc6abcb7c70bc02.002.1","noaa_urn:oid:2.49.0.1.840.0.f80e57843233ebd2fb96860c59b3210b8179d0d2.001.1","noaa_urn:oid:2.49.0.1.840.0.0621ea4cf73eae4ac30c4f5a4c2cc655f6ad67da.001.1","noaa_urn:oid:2.49.0.1.840.0.ad7f21fa3e82e380d1b463a7e0249628def5b363.002.1","noaa_urn:oid:2.49.0.1.840.0.5bce5eb63568efb16e2ed0a7d82f739d91c8818a.001.1","noaa_urn:oid:2.49.0.1.840.0.651641f83d18b067eb2b64f0841a5c86e0558594.001.1","noaa_urn:oid:2.49.0.1.840.0.5df0c65b2816725c6043bb1394200f5966a5395a.002.1","noaa_urn:oid:2.49.0.1.840.0.203d87ba29828d33232d627c92f938ab53d26d23.001.1","noaa_urn:oid:2.49.0.1.840.0.1d4c9569cc4c1b619b1350f6ef7531d587276f69.001.1","noaa_urn:oid:2.49.0.1.840.0.5e69d9e9698d04480e94961ba7e5418052b82e9a.002.1"] |
| Iem TypeSummary | D |
| Iem City | 2 N Hadensville |
| Iem County | Goochland |
| Iem State | VA |
| Iem Wfo | AKQ |
| Iem Remark | Trees downed at the intersection of Three Chopt Rd and Walton Rd. VA-699 closed in both directions in this location. |
| MergedSources | [{"id":"iem_D_38.030_-78.010_1786397100000","source":"iem","severity":"low","severityValue":25,"timestamp":1786397100000,"latitude":38.03,"longitude":-78.01},{"id":"iem_D_37.860_-78.000_1786396800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786396800000,"latitude":37.86,"longitude":-78}] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 48/100, near Richmond (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.