This alert expired on 11 March 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 80 recorded within 20 km of this point since 10 March 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued March 10 at 6:57PM CDT until March 10 at 7:15PM CDT by NWS Norman OK
An estimated 1,123,117 people live within 50 km of this point.
Nearby, since 10 March 2026
- March 11, 2026 · score 76 · 1.1 km
- April 4, 2026 · score 52 · 4.0 km
- July 5, 2026 · score 52 · 5.7 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 76 out of 100, at 88 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 76 / 100 |
| Our confidence | 88% |
| Coordinates | 35.4245, -97.5940 |
| Nearest City | Oklahoma City (8 km) |
| Population Exposed | 1.1M within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-03-10T23:57:00.000Z |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Canadian, OK; Cleveland, OK; Oklahoma, OK; Cleveland, OK; Oklahoma, OK |
| Headline | Tornado Warning issued March 10 at 6:57PM CDT until March 10 at 7:15PM CDT by NWS Norman OK |
| Expires | 2026-03-10T19:15:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c2e45b0b075687f796ff4d5fc9728517d4f021ee.002.1","noaa_urn:oid:2.49.0.1.840.0.e4d717ce63377fc1b587cf5202d2d1b5368ddf95.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 175 |
| Spc Location | 3 S Yukon |
| Spc County | Canadian |
| Spc State | OK |
| Spc Comments | Report from mPING: Golf Ball (1.75 in.). (OUN) |
| MergedSources | [{"id":"spc_hail_35.33_-98.12_53","source":"spc","severity":"high","severityValue":65,"timestamp":1773187640991,"latitude":35.33,"longitude":-98.12},{"id":"spc_hail_35.38_-97.88_59","source":"spc","severity":"high","severityValue":65,"timestamp":1773187640991,"latitude":35.38,"longitude":-97.88},{"id":"spc_hail_35.43_-97.85_80","source":"spc","severity":"high","severityValue":65,"timestamp":1773187640991,"latitude":35.43,"longitude":-97.85},{"id":"spc_hail_35.46_-97.73_100","source":"spc","severity":"high","severityValue":65,"timestamp":1773187640991,"latitude":35.46,"longitude":-97.73}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 76/100, near Oklahoma City (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.