This alert expired on 9 May 2026 at 00:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 37 detections recorded within 20 km of this point since 28 April 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 May 8 at 7:20PM CDT until May 8 at 7:45PM CDT by NWS Tulsa OK
An estimated 55,054 people live within 50 km of this point.
Nearby, since 28 April 2026
- June 25, 2026 · score 63 · 4.8 km
- August 7, 2026 · score 39 · 10.2 km
- June 12, 2026 · score 39 · 11.4 km
How we know
Confirmed by 8 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 91% |
| Coordinates | 35.9090, -95.0740 |
| Nearest City | Tahlequah (9 km) |
| Population Exposed | 55.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T00:20:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1e1e01f330a47511483f7cdfe15c7a512141b205.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cherokee, OK; Wagoner, OK |
| Headline | Severe Thunderstorm Warning issued May 8 at 7:20PM CDT until May 8 at 7:45PM CDT by NWS Tulsa OK |
| Expires | 2026-05-08T19:45:00-05:00 |
| SenderName | NWS Tulsa OK |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 0.88 |
| Iem Unit | Inch |
| Iem City | 3 NE Verdigris |
| Iem County | Rogers |
| Iem State | OK |
| Iem Wfo | TSA |
| Iem Remark | Relayed via social media. |
| MergedSources | [{"id":"iem_H_36.320_-95.710_1778280780000","source":"iem","severity":"low","severityValue":25,"timestamp":1778280780000,"latitude":36.32,"longitude":-95.71},{"id":"iem_H_36.160_-95.520_1778282880000","source":"iem","severity":"low","severityValue":25,"timestamp":1778282880000,"latitude":36.16,"longitude":-95.52},{"id":"iem_H_35.970_-95.390_1778284560000","source":"iem","severity":"low","severityValue":25,"timestamp":1778284560000,"latitude":35.97,"longitude":-95.39},{"id":"iem_H_36.050_-95.340_1778284500000","source":"iem","severity":"low","severityValue":25,"timestamp":1778284500000,"latitude":36.05,"longitude":-95.34},{"id":"iem_H_36.230_-95.690_1778281920000","source":"iem","severity":"low","severityValue":25,"timestamp":1778281920000,"latitude":36.23,"longitude":-95.69},{"id":"iem_H_36.230_-95.680_1778281860000","source":"iem","severity":"low","severityValue":25,"timestamp":1778281860000,"latitude":36.23,"longitude":-95.68},{"id":"iem_H_36.260_-95.660_1778281380000","source":"iem","severity":"low","severityValue":25,"timestamp":1778281380000,"latitude":36.26,"longitude":-95.66}] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 39/100, near Tahlequah (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.