Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 6 June 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 115 recorded within 20 km of this point since 12 March 2026 — 57 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 6 at 5:34PM EDT until June 6 at 6:15PM EDT by NWS Baltimore MD/Washington DC
An estimated 266,927 people live within 50 km of this point.
Nearby, since 12 March 2026
- August 28, 2026 · score 43 · 1.1 km
- June 11, 2026 · score 37 · 7.0 km
- March 12, 2026 · score 43 · 8.5 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.
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) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 40.2757, -76.4113 |
| Nearest City | Lebanon (7 km) |
| Population Exposed | 266.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T21:34:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.601f2f8c7882bffa4ff692f1bfcee5fc |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Carroll, MD; Frederick, MD; Washington, MD; Jefferson, WV; Lancaster, PA; York, PA; Frederick, MD; Montgomery, MD; Washington, MD; Loudoun, VA; Jefferson, WV and 4 more areas |
| Headline | Severe Thunderstorm Warning issued June 6 at 5:34PM 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:2.49.0.1.840.0.601f2f8c7882bffa4ff692f1bfcee5fc47823fc2.002.1","noaa_urn:oid:2.49.0.1.840.0.dbce15864f9588db65ec3190930996dcb116f646.001.1","noaa_urn:oid:2.49.0.1.840.0.82011e644ae5dbc9867eca433c5e9db61f54e4ff.002.1","noaa_urn:oid:2.49.0.1.840.0.97c4cdc03b2d5fba9563f2441e4c3b7b48a1efc1.001.1","noaa_urn:oid:2.49.0.1.840.0.fa68355f633598ddeaf193a850e21490496ffc55.001.1","noaa_urn:oid:2.49.0.1.840.0.1abaafaf7606a80f860b08ed6ff206413f426d4e.001.1","noaa_urn:oid:2.49.0.1.840.0.2f0c2e53b378cd4ae743b26324d67b5f2bed2196.001.1"] |
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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