This alert expired on 23 June 2026 at 00:30 UTC. It is kept here as a record.
It is the 27th strongest of the 86 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 22 at 7:40PM EDT until June 22 at 8:30PM EDT by NWS Mount Holly NJ
An estimated 418,099 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 7, 2026 · score 43 · 3.2 km
- June 13, 2026 · score 43 · 8.0 km
- August 7, 2026 · score 43 · 9.5 km
How we know
Confirmed by 14 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 88 % 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) | 43 / 100 |
| Our confidence | 88% |
| Coordinates | 37.8177, -77.3350 |
| Nearest City | Mechanicsville (23 km) |
| Population Exposed | 418.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-22T23:40:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.3874d3e0a61be3c3b267984d3a7d576a |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Atlantic, NJ; Burlington, NJ; Camden, NJ; Ocean, NJ; Caroline, MD; Queen Anne's, MD; Talbot, MD; Anne Arundel, MD and 13 more areas |
| Headline | Severe Thunderstorm Warning issued June 22 at 7:40PM EDT until June 22 at 8:30PM EDT by NWS Mount Holly NJ |
| Expires | 2026-06-22T20:30:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 17 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3874d3e0a61be3c3b267984d3a7d576a5c1d199e.001.1","noaa_urn:oid:2.49.0.1.840.0.5ee5c8b3042607b6618e9f7e1d1c2dcf2ccac368.001.1","noaa_urn:oid:2.49.0.1.840.0.fe37e97291ac870735bfbc5e454094f15e5ed8ad.001.1","noaa_urn:oid:2.49.0.1.840.0.7a2b7e2a43be94cd3bcd1674216e295428dc723f.001.1","noaa_urn:oid:2.49.0.1.840.0.841d5724575e5f38a172e489d9739173564db0b7.001.1","noaa_urn:oid:2.49.0.1.840.0.8eb7f12204b4c8c017ab796dfc6e32c30b907196.001.1","noaa_urn:oid:2.49.0.1.840.0.142a6039db012f43ffc26ff7d07cc37abf3039cb.001.1","noaa_urn:oid:2.49.0.1.840.0.aa8579c731c580015057953ac42db85cebe20b19.001.1","noaa_urn:oid:2.49.0.1.840.0.c183245dbc90b6a5ed4c0f5ade4ce815b2993bed.002.1","noaa_urn:oid:2.49.0.1.840.0.8d32fa01f9b3da1da166e92fc6e33b5831413e6e.001.1","noaa_urn:oid:2.49.0.1.840.0.bfbf89b526a2d14416241992b2ad3f4131f01571.001.1","noaa_urn:oid:2.49.0.1.840.0.83f3611818966fd6f97369d36b09d9d3884271b5.001.1","noaa_urn:oid:2.49.0.1.840.0.7d45a29fa94f77303ca3098e0bb075fb6145d9a3.001.1","noaa_urn:oid:2.49.0.1.840.0.22feb2d8ba0a1191ffdd63c4b23360d0224ef67c.001.1","noaa_urn:oid:2.49.0.1.840.0.6cee728201ba2fcf44ac0295d7813375bab15d07.001.1","noaa_urn:oid:2.49.0.1.840.0.a27cf49b1b982cdb547216b72331a1d361050ba1.001.1","noaa_urn:oid:2.49.0.1.840.0.f61fe898a2a11ea1212836a6c6d504fe67c2bfd2.002.1"] |
| Iem TypeSummary | D |
| Iem City | 2 NNW Mineral |
| Iem County | Louisa |
| Iem State | VA |
| Iem Wfo | AKQ |
| Iem Remark | Tree down along Chopping Rd. Time Estimated by Radar. |
| MergedSources | [{"id":"iem_D_37.850_-77.640_1782166800000","source":"iem","severity":"low","severityValue":25,"timestamp":1782166800000,"latitude":37.85,"longitude":-77.64},{"id":"iem_M_38.340_-76.990_1782167580000","source":"iem","severity":"low","severityValue":25,"timestamp":1782167580000,"latitude":38.34,"longitude":-76.99},{"id":"iem_D_38.070_-77.330_1782168000000","source":"iem","severity":"low","severityValue":25,"timestamp":1782168000000,"latitude":38.07,"longitude":-77.33},{"id":"iem_D_37.820_-77.910_1782166020000","source":"iem","severity":"low","severityValue":25,"timestamp":1782166020000,"latitude":37.82,"longitude":-77.91},{"id":"iem_D_38.020_-77.510_1782167100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782167100000,"latitude":38.02,"longitude":-77.51},{"id":"iem_M_38.330_-77.020_1782167400000","source":"iem","severity":"low","severityValue":25,"timestamp":1782167400000,"latitude":38.33,"longitude":-77.02},{"id":"iem_D_37.880_-77.610_1782166980000","source":"iem","severity":"low","severityValue":25,"timestamp":1782166980000,"latitude":37.88,"longitude":-77.61},{"id":"iem_D_37.900_-78.070_1782164280000","source":"iem","severity":"low","severityValue":25,"timestamp":1782164280000,"latitude":37.9,"longitude":-78.07},{"id":"iem_M_38.230_-76.950_1782168480000","source":"iem","severity":"low","severityValue":25,"timestamp":1782168480000,"latitude":38.23,"longitude":-76.95},{"id":"iem_D_37.880_-78.130_1782164100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782164100000,"latitude":37.88,"longitude":-78.13},{"id":"iem_D_37.940_-77.470_1782167400000","source":"iem","severity":"low","severityValue":25,"timestamp":1782167400000,"latitude":37.94,"longitude":-77.47},{"id":"iem_D_37.930_-77.660_1782167100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782167100000,"latitude":37.93,"longitude":-77.66},{"id":"iem_D_38.030_-77.930_1782164100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782164100000,"latitude":38.03,"longitude":-77.93}] |
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 43/100, near Mechanicsville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.