This alert expired on 6 June 2026 at 23:00 UTC. It is kept here as a record.
It is the 20th strongest of the 151 detections recorded within 20 km of this point since 12 March 2026. 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 6:13PM EDT until June 6 at 7:00PM EDT by NWS Mount Holly NJ
An estimated 517,742 people live within 50 km of this point.
Nearby, since 12 March 2026
- September 2, 2026 · score 41 · 6.4 km
- August 28, 2026 · score 43 · 13.0 km
- July 28, 2026 · score 37 · 14.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 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) | 48 / 100 |
| Our confidence | 80% |
| Coordinates | 40.3395, -75.7827 |
| Nearest City | Reading (12 km) |
| Population Exposed | 517.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T22:13:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.500f0e2392a9f7290411791632f0c070 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Hunterdon, NJ; Middlesex, NJ; Morris, NJ; Somerset, NJ; Sussex, NJ; Warren, NJ; Bucks, PA; Lehigh, PA; Monroe, PA; Northampton, PA; Lancaster, PA; York, PA; Pike, PA; Wayne, PA and 8 more areas |
| Headline | Severe Thunderstorm Warning issued June 6 at 6:13PM EDT until June 6 at 7:00PM EDT by NWS Mount Holly NJ |
| Expires | 2026-06-06T19:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 12 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.500f0e2392a9f7290411791632f0c070179e57fd.001.1","noaa_urn:oid:2.49.0.1.840.0.059aa0d08aaf85ea075688df330bdaca1006931a.001.1","noaa_urn:oid:2.49.0.1.840.0.2e4bba6ca71a87a8fb440e7bf3ce11f3dd38301a.002.1","noaa_urn:oid:2.49.0.1.840.0.5ecc2c2d03c27413b4bf8a8bb12ae467962a9ace.002.1","noaa_urn:oid:2.49.0.1.840.0.de70524fb7ad2eebdfa109a3663eebf7ed8308e8.001.1","noaa_urn:oid:2.49.0.1.840.0.8d68a9c8cb29a590cfb71d2714dff9df75210e6f.002.1","noaa_urn:oid:2.49.0.1.840.0.f0a6c7825fed0655482989c9900bf9942a5a4898.001.1","noaa_urn:oid:2.49.0.1.840.0.4b63f924e2a5c141b22629ac5877456abc461d8b.001.1","noaa_urn:oid:2.49.0.1.840.0.968dcdeba134abf10bcf9cb1f9f30827fd38f473.002.1","noaa_urn:oid:2.49.0.1.840.0.3ced390bbbf2ff7cf01652b569d41df4fce90c50.001.1","noaa_urn:oid:2.49.0.1.840.0.464dab90978a55f792e6ca0daf2a60c5ff8c8c56.001.1","noaa_urn:oid:2.49.0.1.840.0.dbce15864f9588db65ec3190930996dcb116f646.001.1"] |
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 Reading?
Calamity.live data shows a weather event with CalamityScore 48/100, near Reading (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.