This alert expired on 6 June 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 60 recorded within 20 km of this point since 16 March 2026 — 33 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 6 at 5:17PM EDT until June 6 at 6:15PM EDT by NWS Baltimore MD/Washington DC
An estimated 128,814 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 4, 2026 · score 43 · 2.1 km
- May 13, 2026 · score 43 · 6.3 km
- March 17, 2026 · score 43 · 9.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 80 % 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 | 80% |
| Coordinates | 40.0671, -77.0890 |
| Nearest City | Carlisle (17 km) |
| Population Exposed | 128.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T21:17:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.38339b27b95e1145b1dfd49b9bc7989c |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Frederick, MD; Montgomery, MD; Washington, MD; Clarke, VA; Frederick, VA; Loudoun, VA; Berkeley, WV; Jefferson, WV; Dauphin, PA; Lebanon, PA; Perry, PA; Carroll, MD; Frederick, MD; Washington, MD; Berkeley, WV; Jefferson, WV and 4 more areas |
| Headline | Severe Thunderstorm Warning issued June 6 at 5:17PM EDT until June 6 at 6:15PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-06-06T18:15:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.38339b27b95e1145b1dfd49b9bc7989c45b62b1a.001.1","noaa_urn:oid:2.49.0.1.840.0.fa68355f633598ddeaf193a850e21490496ffc55.001.1","noaa_urn:oid:2.49.0.1.840.0.fa02d68d9937ec8ce77bc3b6975cd80f33bddfab.001.1","noaa_urn:oid:2.49.0.1.840.0.1abaafaf7606a80f860b08ed6ff206413f426d4e.001.1","noaa_urn:oid:2.49.0.1.840.0.f9e99245bb1022a49b0d1dad0d86644a541fa88e.001.1","noaa_urn:oid:2.49.0.1.840.0.78537b097dabf6e3fb42cdfb1578dc30e040a861.001.1","noaa_urn:oid:2.49.0.1.840.0.8ce50d6c8b6f5ea0c562d9e9219ac2eca07fa0b6.001.1"] |
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 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.
Want to know when something happens near Carlisle?
Calamity.live data shows a weather event with CalamityScore 43/100, near Carlisle (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.