This alert expired on 4 July 2026 at 01:30 UTC. It is kept here as a record.
It is the 9th strongest of the 103 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 9:12PM EDT until July 3 at 9:30PM EDT by NWS Cleveland OH
An estimated 249,035 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 21, 2026 · score 67 · 4.1 km
- July 5, 2026 · score 67 · 5.4 km
- August 9, 2026 · score 43 · 11.9 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 43 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) | 43 / 100 |
| Our confidence | 90% |
| Coordinates | 41.0757, -80.5668 |
| Nearest City | Youngstown (7 km) |
| Population Exposed | 249.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T01:12:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.62593c9a9e36cca85c63aaa4a26d04b3 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Ashland, OH; Holmes, OH; Morrow, OH; Richland, OH; Wayne, OH; Ashtabula, OH; Geauga, OH; Trumbull, OH; Armstrong, PA; Clarion, PA; Indiana, PA; Jefferson, PA and 3 more areas |
| Headline | Severe Thunderstorm Warning issued July 3 at 9:12PM EDT until July 3 at 9:30PM EDT by NWS Cleveland OH |
| Expires | 2026-07-03T21:30:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.62593c9a9e36cca85c63aaa4a26d04b3133697ba.002.1","noaa_urn:oid:2.49.0.1.840.0.a22728ecb4e168fb3f8b983a7d4eba862fd501fb.002.1","noaa_urn:oid:2.49.0.1.840.0.d6c647ac13287888810d71697e24b5548b18cc72.001.1","noaa_urn:oid:2.49.0.1.840.0.15015f79f200b29bc59642594c53b77d4d2f6138.001.1","noaa_urn:oid:2.49.0.1.840.0.b25394f35d7d7faefe627f044eb313633aa63a5c.001.1","noaa_urn:oid:2.49.0.1.840.0.a1472cddb0af1a382237234138cf44809b75251c.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_41.120_-79.720_1783124460000","source":"iem","severity":"low","severityValue":25,"timestamp":1783124460000,"latitude":41.12,"longitude":-79.72},{"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 Youngstown?
Calamity.live data shows a weather event with CalamityScore 43/100, near Youngstown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.