This alert expired on 8 August 2026 at 03:30 UTC. It is kept here as a record.
No stronger detection stands among the 80 recorded within 20 km of this point since 12 March 2026 — 36 others scored the same. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued August 7 at 7:27PM EDT until August 7 at 11:30PM EDT by NWS Mount Holly NJ
An estimated 373,437 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 28, 2026 · score 37 · 8.4 km
- September 1, 2026 · score 37 · 10.9 km
- August 28, 2026 · score 43 · 12.8 km
How we know
Confirmed by 33 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.
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 | 88% |
| Coordinates | 40.5361, -75.8267 |
| Nearest City | Reading (23 km) |
| Population Exposed | 373.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-07T23:27:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.c2aa731ce0e6aed354bec61beeb75ea5 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Warren, NJ; Monroe, PA; Northampton, PA; Lancaster, PA; York, PA |
| Headline | Flood Warning issued August 7 at 7:27PM EDT until August 7 at 11:30PM EDT by NWS Mount Holly NJ |
| Expires | 2026-08-07T23:30:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c2aa731ce0e6aed354bec61beeb75ea516cd9f09.001.1","noaa_urn:oid:2.49.0.1.840.0.3446a413b6f77ccc46623315f98d0ac35796def7.001.1"] |
| Iem TypeSummary | F |
| Iem City | 2 NW East Petersburg |
| Iem County | Lancaster |
| Iem State | PA |
| Iem Wfo | CTP |
| Iem Remark | Roadways flooded. |
| MergedSources | 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gitude":-76.39}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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.
Want to know when something happens near Reading?
Calamity.live data shows a weather event with CalamityScore 43/100, near Reading (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.