Right now
The most recent data we hold from NOAA arrived 28 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 22:30 UTC. It is kept here as a record.
It is the 9th strongest of the 23 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 4 at 5:42PM EDT until July 4 at 6:30PM EDT by NWS Pittsburgh PA
Nearby, since 17 March 2026
- July 4, 2026 · score 39 · 15.7 km
How we know
8 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.67/1 |
| Coordinates | 38.9264, -78.9895 |
| Nearest City | Harrisonburg (54 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Date | 2026-07-04 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.cfbbb37b4126baecf1eb2dfd1cee647a |
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: 2026-07-04 — time not reported.
First archived: 2026-07-04T21:43:01.606Z. 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 | Fayette, PA; Indiana, PA; Westmoreland, PA; Greene, PA; Harrison, OH; Jefferson, OH; Brooke, WV and 20 more areas |
| Headline | Severe Thunderstorm Warning issued July 4 at 5:42PM EDT until July 4 at 6:30PM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-04T18:30:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 24 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.cfbbb37b4126baecf1eb2dfd1cee647ae46c1033.001.1","noaa_urn:oid:2.49.0.1.840.0.63b79cb85188d4dbb210ce668777f15d6bb47029.001.1","noaa_urn:oid:2.49.0.1.840.0.7cd7ecd648126023d6ae54a293988e15d29922f6.001.1","noaa_urn:oid:2.49.0.1.840.0.6d51b89149ea93d9513bbacb01ea8b10a6497c74.001.1","noaa_urn:oid:2.49.0.1.840.0.8593d459e14875cac6d3f3e17a6b0616e8ad346b.001.1","noaa_urn:oid:2.49.0.1.840.0.f24fc1ead585d315118e052ec631f535f1e3e240.001.1","noaa_urn:oid:2.49.0.1.840.0.d8174b4542c7d4dc3d9f594e4a081071b14f65e3.002.1","noaa_urn:oid:2.49.0.1.840.0.5854bd430f1143138719038d219306a45df713df.001.1","noaa_urn:oid:2.49.0.1.840.0.23b23c08c9e60267924fc7bbfd63d9d7f3918ac7.001.1","noaa_urn:oid:2.49.0.1.840.0.eb20db5a1172008abd9696d67d187dd3408c4a84.001.1","noaa_urn:oid:2.49.0.1.840.0.11cb5f1a40274add75d85d2e0fd9c33b6e537766.001.1","noaa_urn:oid:2.49.0.1.840.0.243016d4135a4511facf3d8dc0da30fdf7669e4f.002.1","noaa_urn:oid:2.49.0.1.840.0.6ac4de5bb462456e4cc38e73b516b2e7191031d0.001.1","noaa_urn:oid:2.49.0.1.840.0.56443351dd18605da521a671593be69eb0e8bf7d.001.1","noaa_urn:oid:2.49.0.1.840.0.36339053bef2b81b3005864276c0667df9415221.001.1","noaa_urn:oid:2.49.0.1.840.0.1dad7d91b072a3b7c3ab9ddca11149eca5c797c0.001.1","noaa_urn:oid:2.49.0.1.840.0.09286318d4960747764216d27de0fc2ba40b44b7.001.1","noaa_urn:oid:2.49.0.1.840.0.622442f15ab77d67bb47b47305efd1c60dab7b3c.001.1","noaa_urn:oid:2.49.0.1.840.0.1fde092403c28f887d08e36ac42a7cc31b47ec8c.001.1","noaa_urn:oid:2.49.0.1.840.0.5e4c66af247bd98fe1f17e932a39cb6ab3485f8d.001.1","noaa_urn:oid:2.49.0.1.840.0.706bd666ba72c33cb936b667785fbc1358cb0897.002.1","noaa_urn:oid:2.49.0.1.840.0.f5456d903a02cabaf99c79b4fa38c35b5faed33d.001.1","noaa_urn:oid:2.49.0.1.840.0.e6a11b829cf85a07bf87545083ff5d04a1787439.001.1","noaa_urn:oid:2.49.0.1.840.0.8db9d6cdeb9465bd68051411d5d688d7ee1d8a14.001.1"] |
| Iem TypeSummary | D |
| Iem City | 2 NNE Grottoes |
| Iem County | Rockingham |
| Iem State | VA |
| Iem Wfo | LWX |
| Iem Remark | Trees and wires blew down in the 6800 block of New Haven Road. |
| MergedSources | [{"id":"iem_D_39.100_-78.960_1783196640000","source":"iem","severity":"low","severityValue":25,"timestamp":1783196640000,"latitude":39.1,"longitude":-78.96},{"id":"iem_D_38.710_-79.340_1783192080000","source":"iem","severity":"low","severityValue":25,"timestamp":1783192080000,"latitude":38.71,"longitude":-79.34},{"id":"iem_D_38.570_-78.760_1783190700000","source":"iem","severity":"low","severityValue":25,"timestamp":1783190700000,"latitude":38.57,"longitude":-78.76},{"id":"iem_D_38.350_-78.680_1783193100000","source":"iem","severity":"low","severityValue":25,"timestamp":1783193100000,"latitude":38.35,"longitude":-78.68},{"id":"iem_D_39.090_-79.060_1783196280000","source":"iem","severity":"low","severityValue":25,"timestamp":1783196280000,"latitude":39.09,"longitude":-79.06},{"id":"iem_D_38.570_-78.510_1783195800000","source":"iem","severity":"low","severityValue":25,"timestamp":1783195800000,"latitude":38.57,"longitude":-78.51},{"id":"iem_D_38.300_-78.810_1783192500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783192500000,"latitude":38.3,"longitude":-78.81}] |
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.
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