Right now
The most recent data we hold from NOAA arrived 16 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 3 July 2026 at 20:31 UTC. It is kept here as a record.
It is the 2nd strongest of the 18 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 3 at 4:21PM EDT until July 3 at 4:30PM EDT by NWS Pittsburgh PA
Urban PEI: 28,213 within a heuristic 50 km radius; not unique people.
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.88/1 |
| Coordinates | 41.6943, -77.0373 |
| Nearest City | Elmira (48 km) |
| Urban exposure index (PEI) | 28.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T20:21:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.e1c310d3cb661845bd9dff1b2c0bfdaf |
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: 2026-07-03T20:21:00.000Z.
First archived: 2026-07-03T20:23:22.759Z. 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 | Jefferson, PA; Clinton, PA; Lycoming, PA; Broome, NY; Susquehanna, PA and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 3 at 4:21PM EDT until July 3 at 4:30PM EDT by NWS Pittsburgh PA |
| Expires | 2026-07-03T16:31:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e1c310d3cb661845bd9dff1b2c0bfdafcf630179.001.1","noaa_urn:oid:2.49.0.1.840.0.44c3390d60b9827cfbe4eaf649af7abada158520.001.1","noaa_urn:oid:2.49.0.1.840.0.f1d5b59356c9b434636d73ff7a0b8d113b8b1695.001.1","noaa_urn:oid:2.49.0.1.840.0.2211557a82207b50fde5eddf125e0933ecda360f.001.1","noaa_urn:oid:2.49.0.1.840.0.620b3cb2a4869eb30748641db0bd6b78033a8fcd.001.1"] |
| Iem TypeSummary | D |
| Iem City | 2 SSE Troupsburg |
| Iem County | Steuben |
| Iem State | NY |
| Iem Wfo | BGM |
| Iem Remark | Multiple trees down along NY-36 south of Troupsburg. |
| MergedSources | [{"id":"iem_D_41.730_-77.080_1783108680000","source":"iem","severity":"low","severityValue":25,"timestamp":1783108680000,"latitude":41.73,"longitude":-77.08},{"id":"iem_D_42.020_-77.530_1783105560000","source":"iem","severity":"low","severityValue":25,"timestamp":1783105560000,"latitude":42.02,"longitude":-77.53}] |
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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