This alert expired on 4 July 2026 at 01:00 UTC. It is kept here as a record.
It is the 4th strongest of the 53 detections recorded within 20 km of this point since 17 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 July 3 at 8:42PM EDT until July 3 at 9:00PM EDT by NWS Pittsburgh PA
An estimated 695,308 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 5, 2026 · score 43 · 8.9 km
- July 5, 2026 · score 72 · 9.3 km
- July 4, 2026 · score 48 · 14.4 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 90 % 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 | 90% |
| Coordinates | 41.1414, -80.9475 |
| Nearest City | Warren (15 km) |
| Population Exposed | 695.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T00:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.25b5ba45d4cbe66b37c598fbc7a638d4 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clarion, PA; Forest, PA; Venango, PA; Armstrong, PA; Butler, PA; Clarion, PA; Indiana, PA; Jefferson, PA; Cuyahoga, OH; Lorain, OH and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 3 at 8:42PM EDT until July 3 at 9:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-03T21:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.25b5ba45d4cbe66b37c598fbc7a638d4272c83f0.001.1","noaa_urn:oid:2.49.0.1.840.0.08b83ebd5fd3dd5d8fa8b9150c3f26ae123be039.001.1","noaa_urn:oid:2.49.0.1.840.0.23bc24d5a5660cd566bfdbca6747a69c85461f87.001.1","noaa_urn:oid:2.49.0.1.840.0.6c0bcd1e24be34b5d2c85abbf3d92cc1b2dcd7e6.001.1"] |
| Iem TypeSummary | D |
| Iem City | 2 NNW Grove City |
| Iem County | Mercer |
| Iem State | PA |
| Iem Wfo | PBZ |
| Iem Remark | BETWEEN GEORGE JR RD TO THE RAILROAD TRACKS (CROSSING CRANBERRY RD) THERE ARE WIRES DOWN AND TREES ALL ALONG THE ROAD. Time based on radar estimate. |
| MergedSources | [{"id":"iem_L_41.170_-80.170_1783121220000","source":"iem","severity":"low","severityValue":25,"timestamp":1783121220000,"latitude":41.17,"longitude":-80.17},{"id":"iem_D_41.240_-80.490_1783120620000","source":"iem","severity":"low","severityValue":25,"timestamp":1783120620000,"latitude":41.24,"longitude":-80.49},{"id":"iem_D_41.190_-80.100_1783121820000","source":"iem","severity":"low","severityValue":25,"timestamp":1783121820000,"latitude":41.19,"longitude":-80.1},{"id":"iem_D_41.190_-80.110_1783121820000","source":"iem","severity":"low","severityValue":25,"timestamp":1783121820000,"latitude":41.19,"longitude":-80.11}] |
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 Warren?
Calamity.live data shows a weather event with CalamityScore 48/100, near Warren (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.