This alert expired on 18 July 2026 at 22:15 UTC. It is kept here as a record.
It is the 11th strongest of the 43 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 18 at 5:54PM EDT until July 18 at 6:15PM EDT by NWS Cleveland OH
Nearby, since 17 March 2026
- June 14, 2026 · score 46 · 2.6 km
- March 17, 2026 · score 22 · 13.3 km
- June 14, 2026 · score 46 · 13.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 59 % 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) | 22 / 100 |
| Our confidence | 59% |
| Coordinates | 41.3132, -79.5887 |
| Nearest City | Hermitage (73 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-18T21:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.652a1b178c4ddad9958ec362d8169bd0 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Mahoning, OH; Columbiana, OH; Beaver, PA; Butler, PA; Lawrence, PA; Stark, OH; Summit, OH; Wayne, OH and 10 more areas |
| Headline | Severe Thunderstorm Warning issued July 18 at 5:54PM EDT until July 18 at 6:15PM EDT by NWS Cleveland OH |
| Expires | 2026-07-18T18:15:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 14 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.652a1b178c4ddad9958ec362d8169bd05646580c.002.1","noaa_urn:oid:2.49.0.1.840.0.17104e6e146fa8620612d6a10d4b31593d4a7f2e.001.1","noaa_urn:oid:2.49.0.1.840.0.a96fdab10c88fa0cddbbafd70b2b29e9f59e1567.001.1","noaa_urn:oid:2.49.0.1.840.0.4f10db5843b5f50dbf1a1560f9fed832bbede785.001.1","noaa_urn:oid:2.49.0.1.840.0.30f9b96bf175f330eb9956866fd7096c5759bc82.002.1","noaa_urn:oid:2.49.0.1.840.0.3e7fae83872b6b8543264f360aa34a767b810f6f.001.1","noaa_urn:oid:2.49.0.1.840.0.a9db3dd8a961a509d0d3475145e1669b111bb8d0.001.1","noaa_urn:oid:2.49.0.1.840.0.ecfbf42a69d18f2faed115f7b168bdce7205ec3b.001.1","noaa_urn:oid:2.49.0.1.840.0.061ec71728102fed6caa43e2af2ce37adf0d7ce9.001.1","noaa_urn:oid:2.49.0.1.840.0.7c0f9bdf81d7a53c23a4394e9ebb9a09f1943dd0.001.1","noaa_urn:oid:2.49.0.1.840.0.7b8b6d6574160eec786a2a3865e43bfadb5c3ecb.001.1","noaa_urn:oid:2.49.0.1.840.0.6df1a7df23c0138e499ee88b9f2bfc12d761b169.001.1","noaa_urn:oid:2.49.0.1.840.0.874f7e3aa300503d5a3c2800dac087dcebb8c68c.001.1","noaa_urn:oid:2.49.0.1.840.0.06776e3e439ef0923421aa27f07cbbe6c10ea0bb.001.1"] |
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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.