Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 19 km from here.
This alert expired on 6 June 2026 at 23:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 121 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 June 6 at 6:42PM EDT until June 6 at 7:30PM EDT by NWS Baltimore MD/Washington DC
An estimated 1,271,302 people live within 50 km of this point.
Nearby, since 17 March 2026
- March 17, 2026 · score 52 · 5.7 km
- September 4, 2026 · score 46 · 6.1 km
- August 7, 2026 · score 46 · 8.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 52 / 100 |
| Our confidence | 80% |
| Coordinates | 40.5408, -74.9623 |
| Nearest City | Bridgewater (27 km) |
| Population Exposed | 1.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T22:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.cf5c9d8f4c4940ab0d7d35c1cefe7b35 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Anne Arundel, MD; Baltimore, MD; Howard, MD; Montgomery, MD; Prince Georges, MD; Baltimore City, MD; New Castle, DE; Hunterdon, NJ; Mercer, NJ; Somerset, NJ; Berks, PA; Bucks, PA; Chester, PA; Delaware, PA; Lehigh, PA; Montgomery, PA; Philadelphia, PA; Lancaster, PA; York, PA and 3 more areas |
| Headline | Severe Thunderstorm Warning issued June 6 at 6:42PM EDT until June 6 at 7:30PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-06-06T19:30:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.cf5c9d8f4c4940ab0d7d35c1cefe7b3574911b04.001.1","noaa_urn:oid:2.49.0.1.840.0.3af3ca3430892b009fc79f5a4fa1792a7ca93107.001.1","noaa_urn:oid:2.49.0.1.840.0.059aa0d08aaf85ea075688df330bdaca1006931a.001.1","noaa_urn:oid:2.49.0.1.840.0.8dc83894cb8a9a7ba646bbe945028d3bf69159d2.001.1","noaa_urn:oid:2.49.0.1.840.0.1b673f0a420e3a80107a2ab68075d4945b0c42c5.002.1","noaa_urn:oid:2.49.0.1.840.0.11b2fd34dd900f27e2d9f744f0a828267e346387.001.1"] |
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.
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