This alert expired on 4 July 2026 at 04:15 UTC. It is kept here as a record.
It is the 5th strongest of the 37 detections recorded within 20 km of this point since 22 March 2026. Another comparable one was recorded here earlier the same day. 13 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 11:38PM EDT until July 4 at 12:15AM EDT by NWS Pittsburgh PA
An estimated 42,161 people live within 50 km of this point.
Nearby, since 22 March 2026
- June 14, 2026 · score 58 · 15.1 km
- June 25, 2026 · score 39 · 19.9 km
How we know
Confirmed by 16 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 89 % 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) | 34 / 100 |
| Our confidence | 89% |
| Coordinates | 41.0761, -78.2467 |
| Nearest City | State College (45 km) |
| Population Exposed | 42.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T03:38:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.476773b8cbb521a201133f64b8940074 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Forest, PA; Jefferson, PA; Centre, PA; Mifflin, PA; Snyder, PA; Union, PA |
| Headline | Severe Thunderstorm Warning issued July 3 at 11:38PM EDT until July 4 at 12:15AM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-04T00:15:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.476773b8cbb521a201133f64b8940074860183e3.002.1","noaa_urn:oid:2.49.0.1.840.0.13a014a8a6ef05f58231f96f74783155cf2cafd4.001.1"] |
| Iem TypeSummary | D |
| Iem City | 4 SSW Reynoldsville |
| Iem County | Jefferson |
| Iem State | PA |
| Iem Wfo | PBZ |
| Iem Remark | TREE BLOCKING THE ROAD and CABLE LINE ALONG SIDE OF THE ROAD. Report near 107 GENO LN, Winslow. Time based on radar estimate. |
| MergedSources | [{"id":"iem_D_40.980_-78.150_1783131300000","source":"iem","severity":"low","severityValue":25,"timestamp":1783131300000,"latitude":40.98,"longitude":-78.15},{"id":"iem_D_41.100_-78.160_1783131000000","source":"iem","severity":"low","severityValue":25,"timestamp":1783131000000,"latitude":41.1,"longitude":-78.16},{"id":"iem_D_40.850_-78.720_1783128600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783128600000,"latitude":40.85,"longitude":-78.72},{"id":"iem_D_40.900_-77.780_1783132620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783132620000,"latitude":40.9,"longitude":-77.78},{"id":"iem_D_40.970_-77.840_1783132320000","source":"iem","severity":"low","severityValue":25,"timestamp":1783132320000,"latitude":40.97,"longitude":-77.84},{"id":"iem_D_40.880_-77.770_1783132620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783132620000,"latitude":40.88,"longitude":-77.77},{"id":"iem_D_40.970_-79.090_1783127640000","source":"iem","severity":"low","severityValue":25,"timestamp":1783127640000,"latitude":40.97,"longitude":-79.09},{"id":"iem_D_40.890_-78.240_1783132680000","source":"iem","severity":"low","severityValue":25,"timestamp":1783132680000,"latitude":40.89,"longitude":-78.24},{"id":"iem_D_40.900_-78.710_1783128900000","source":"iem","severity":"low","severityValue":25,"timestamp":1783128900000,"latitude":40.9,"longitude":-78.71},{"id":"iem_D_41.160_-78.720_1783129200000","source":"iem","severity":"low","severityValue":25,"timestamp":1783129200000,"latitude":41.16,"longitude":-78.72},{"id":"iem_D_40.980_-78.200_1783130700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783130700000,"latitude":40.98,"longitude":-78.2},{"id":"iem_D_40.910_-77.880_1783132200000","source":"iem","severity":"low","severityValue":25,"timestamp":1783132200000,"latitude":40.91,"longitude":-77.88},{"id":"iem_D_40.880_-77.840_1783132800000","source":"iem","severity":"low","severityValue":25,"timestamp":1783132800000,"latitude":40.88,"longitude":-77.84},{"id":"iem_D_41.030_-78.460_1783129500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783129500000,"latitude":41.03,"longitude":-78.46},{"id":"iem_D_41.040_-78.910_1783127820000","source":"iem","severity":"low","severityValue":25,"timestamp":1783127820000,"latitude":41.04,"longitude":-78.91}] |
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.
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.