Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 4 July 2026 at 02:00 UTC. It is kept here as a record.
It is the 11th strongest of the 205 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 9:17PM EDT until July 3 at 10:00PM EDT by NWS Pittsburgh PA
Urban PEI: 226,980 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 21, 2026 · score 67 · 6.2 km
- July 4, 2026 · score 43 · 6.8 km
- August 9, 2026 · score 43 · 7.5 km
How we know
9 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 41.0591, -80.4885 |
| Nearest City | New Castle (13 km) |
| Urban exposure index (PEI) | 227.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T01:17:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.dcd8cbcf0281bc7b9545046f2c09516c |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-04T01:17:00.000Z.
First archived: 2026-07-04T01:20:55.477Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Indiana, PA; Jefferson, PA; Ashtabula, OH; Geauga, OH; Trumbull, OH; Columbiana, OH; Beaver, PA; Lawrence, PA and 3 more areas |
| Headline | Severe Thunderstorm Warning issued July 3 at 9:17PM EDT until July 3 at 10:00PM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-03T22:00:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.dcd8cbcf0281bc7b9545046f2c09516c74cf174e.001.1","noaa_urn:oid:2.49.0.1.840.0.a22728ecb4e168fb3f8b983a7d4eba862fd501fb.002.1","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","noaa_urn:oid:2.49.0.1.840.0.62593c9a9e36cca85c63aaa4a26d04b3133697ba.002.1"] |
| Iem TypeSummary | D |
| Iem City | 5 W Knox |
| Iem County | Clarion |
| Iem State | PA |
| Iem Wfo | PBZ |
| Iem Remark | Trees down on wire. Near 2028 Community Rd. Time based on radar estimate. |
| MergedSources | [{"id":"iem_D_40.980_-79.660_1783125480000","source":"iem","severity":"low","severityValue":25,"timestamp":1783125480000,"latitude":40.98,"longitude":-79.66},{"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_40.950_-79.670_1783125600000","source":"iem","severity":"low","severityValue":25,"timestamp":1783125600000,"latitude":40.95,"longitude":-79.67},{"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},{"id":"iem_D_41.250_-79.640_1783124820000","source":"iem","severity":"low","severityValue":25,"timestamp":1783124820000,"latitude":41.25,"longitude":-79.64}] |
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 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.
Review the area, threshold and delivery channel in your account.
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