This alert is in force until 3 September 2026, 13:15 UTC.
It is the 8th strongest of the 26 detections recorded within 20 km of this point since 15 April 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flood Warning issued September 3 at 7:15AM EDT until September 3 at 9:15AM EDT by NWS Mount Holly NJ
Nearby, since 15 April 2026
- July 11, 2026 · score 22 · 9.6 km
- July 18, 2026 · score 46 · 17.6 km
- July 11, 2026 · score 22 · 19.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 66 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 66% |
| Coordinates | 41.6845, -77.9560 |
| Nearest City | Williamsport (94 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-03T11:15:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.996e75080828b3bb07e3411826b1e7d1c5ca6c48.001.1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | New Castle, DE; Burlington, NJ; Camden, NJ; Gloucester, NJ; Salem, NJ; Bucks, PA; Chester, PA; Delaware, PA; Montgomery, PA; Philadelphia, PA; Centre, PA; Clearfield, PA; Huntingdon, PA; Juniata, PA; Mifflin, PA; Perry, PA; Centre, PA; Clinton, PA and 4 more areas |
| Headline | Flood Warning issued September 3 at 7:15AM EDT until September 3 at 9:15AM EDT by NWS Mount Holly NJ |
| Expires | 2026-09-03T09:15:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.996e75080828b3bb07e3411826b1e7d1c5ca6c48.001.1","noaa_urn:oid:2.49.0.1.840.0.1830903f1166819d6c023077d8fd701aab02ccee.001.1","noaa_urn:oid:2.49.0.1.840.0.d797aa6b222e96d9b96ae4dea805f3accf45514f.002.1","noaa_urn:oid:2.49.0.1.840.0.696577db35dcb7eab202c47fd7298d73b9bafbb9.001.1","noaa_urn:oid:2.49.0.1.840.0.9cc5bf0761668955801cbad06e1c6111a86430e9.001.1","noaa_urn:oid:2.49.0.1.840.0.9ddf62bfef97c5434ee14ba2aef19f8f2dcacf76.001.1","noaa_urn:oid:2.49.0.1.840.0.d02613a7d72cc8c744d3a2edefd83341f2e68711.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 5 E Brandy Camp |
| Spc County | Elk |
| Spc State | PA |
| Spc Comments | Tree down over road at the block of 6100. (CTP) |
| MergedSources | [{"id":"spc_wind_41.33_-78.60_17","source":"spc","severity":"medium","severityValue":45,"timestamp":1788434006563,"latitude":41.33,"longitude":-78.6}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.