Right now
The most recent data we hold from NOAA arrived 6 hours 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 00:08 UTC. It is kept here as a record.
It is the 5th strongest of the 59 detections recorded within 20 km of this point since 31 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 3 at 7:58PM EDT until July 3 at 8:00PM EDT by NWS Detroit/Pontiac MI
Urban PEI: 432,507 within a heuristic 50 km radius; not unique people.
Nearby, since 31 March 2026
- August 10, 2026 · score 67 · 4.1 km
- September 4, 2026 · score 37 · 6.9 km
- September 3, 2026 · score 37 · 6.9 km
How we know
4 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 | 0.88/1 |
| Coordinates | 41.3688, -83.5117 |
| Nearest City | Bowling Green (12 km) |
| Urban exposure index (PEI) | 432.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T23:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b2ebbb3f909e4b241c89eddc15ebcafa |
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: 2026-07-03T23:58:00.000Z.
First archived: 2026-07-04T00:00:11.953Z. 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 | St. Clair, MI; Erie, OH; Huron, OH; Lorain, OH; Sandusky, OH; Hancock, OH; Seneca, OH; Wood, OH; Wyandot, OH and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 3 at 7:58PM EDT until July 3 at 8:00PM EDT by NWS Detroit/Pontiac MI |
| Expires | 2026-07-03T20:08:00-04:00 |
| SenderName | NWS Detroit/Pontiac MI |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b2ebbb3f909e4b241c89eddc15ebcafacb07de8b.001.1","noaa_urn:oid:2.49.0.1.840.0.0dae8dc4acef9b49df3c9a476590dc770aeebfba.002.1","noaa_urn:oid:2.49.0.1.840.0.cae5c42e8c1f7cd7846d3a140becb2b12674aa0c.001.1","noaa_urn:oid:2.49.0.1.840.0.4d0178f94344414ee29c6229daaa1feb5345f320.001.1","noaa_urn:oid:2.49.0.1.840.0.4d2e073bcfe6c14f233c2670b32a4d32f5fb0e64.002.1"] |
| Iem TypeSummary | D |
| Iem City | Gibsonburg |
| Iem County | Sandusky |
| Iem State | OH |
| Iem Wfo | CLE |
| Iem Remark | Multiple trees and powerlines down around the village. Time estimated via radar. |
| MergedSources | [{"id":"iem_M_41.690_-83.470_1783118160000","source":"iem","severity":"low","severityValue":25,"timestamp":1783118160000,"latitude":41.69,"longitude":-83.47},{"id":"iem_G_41.940_-83.430_1783115580000","source":"iem","severity":"low","severityValue":25,"timestamp":1783115580000,"latitude":41.94,"longitude":-83.43},{"id":"iem_D_41.380_-83.320_1783118880000","source":"iem","severity":"low","severityValue":25,"timestamp":1783118880000,"latitude":41.38,"longitude":-83.32}] |
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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