This alert expired on 11 August 2026 at 10:00 UTC. It is kept here as a record.
It is the 5th strongest of the 41 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 11 at 5:50AM EDT until August 11 at 6:00AM EDT by NWS Cleveland OH
An estimated 432,507 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 11, 2026 · score 43 · 3.6 km
- June 14, 2026 · score 43 · 8.1 km
- July 3, 2026 · score 43 · 8.2 km
How we know
Confirmed by 9 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 92 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 |
| Our confidence | 92% |
| Coordinates | 41.4390, -83.4826 |
| Nearest City | Bowling Green (16 km) |
| Population Exposed | 432.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T09:50:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.31ad92c89ce87fa4b466b3798ea902c3 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Ottawa, OH; Sandusky, OH; Wood, OH |
| Headline | Severe Thunderstorm Warning issued August 11 at 5:50AM EDT until August 11 at 6:00AM EDT by NWS Cleveland OH |
| Expires | 2026-08-11T06:00:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.31ad92c89ce87fa4b466b3798ea902c398653585.002.1","noaa_urn:oid:2.49.0.1.840.0.10dff5ea6dd79fb4583a062e143eb100022d86f6.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.25 |
| Iem Unit | Inch |
| Iem City | 3 E Berkey |
| Iem County | Lucas |
| Iem State | OH |
| Iem Wfo | CLE |
| MergedSources | [{"id":"iem_M_41.700_-83.260_1786424400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786424400000,"latitude":41.7,"longitude":-83.26},{"id":"iem_H_41.760_-83.750_1786422180000","source":"iem","severity":"low","severityValue":25,"timestamp":1786422180000,"latitude":41.76,"longitude":-83.75},{"id":"iem_M_41.700_-83.260_1786425000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786425000000,"latitude":41.7,"longitude":-83.26},{"id":"iem_M_41.720_-83.370_1786424400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786424400000,"latitude":41.72,"longitude":-83.37},{"id":"iem_M_41.490_-82.700_1786423800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786423800000,"latitude":41.49,"longitude":-82.7},{"id":"iem_D_41.390_-82.670_1786422540000","source":"iem","severity":"low","severityValue":25,"timestamp":1786422540000,"latitude":41.39,"longitude":-82.67},{"id":"iem_M_41.440_-82.640_1786423860000","source":"iem","severity":"low","severityValue":25,"timestamp":1786423860000,"latitude":41.44,"longitude":-82.64},{"id":"iem_H_41.710_-83.770_1786422000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786422000000,"latitude":41.71,"longitude":-83.77}] |
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.
Want to know when something happens near Bowling Green?
Calamity.live data shows a weather event with CalamityScore 43/100, near Bowling Green (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.