Right now
The most recent data we hold from NOAA arrived 7 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 4 July 2026 at 01:15 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 8:31PM EDT until July 3 at 9:15PM EDT by NWS Cleveland OH
Urban PEI: 767,193 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 48 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) | 48 / 100 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 41.1567, -81.0318 |
| Nearest City | Warren (20 km) |
| Urban exposure index (PEI) | 767.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T00:31:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.6c0bcd1e24be34b5d2c85abbf3d92cc1 |
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: 2026-07-04T00:31:00.000Z.
First archived: 2026-07-04T00:32:42.671Z. 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 | Crawford, OH; Huron, OH; Marion, OH; Seneca, OH; Wyandot, OH; Cuyahoga, OH; Lorain, OH; Clarion, PA; Forest, PA; Venango, PA and 1 more areas |
| Headline | Severe Thunderstorm Warning issued July 3 at 8:31PM EDT until July 3 at 9:15PM EDT by NWS Cleveland OH |
| Expires | 2026-07-03T21:15:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6c0bcd1e24be34b5d2c85abbf3d92cc1b2dcd7e6.001.1","noaa_urn:oid:2.49.0.1.840.0.23bc24d5a5660cd566bfdbca6747a69c85461f87.001.1","noaa_urn:oid:2.49.0.1.840.0.06bb39816e8ce46ace19fb3e9fb1a9860f462e52.001.1","noaa_urn:oid:2.49.0.1.840.0.1dcb8a0341febf1feb897205eeea07af0706be10.001.1"] |
| Iem TypeSummary | D |
| Iem City | 1 E Sharon |
| Iem County | Mercer |
| Iem State | PA |
| Iem Wfo | PBZ |
| Iem Remark | Wires down on Kimberly Road and Bentley Ave. |
| 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}] |
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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