This alert expired on 10 May 2026 at 01:45 UTC. It is kept here as a record.
No stronger detection stands among the 21 recorded within 20 km of this point since 31 March 2026 — 12 others scored the same. 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 May 9 at 8:24PM CDT until May 9 at 8:45PM CDT by NWS Norman OK
Nearby, since 31 March 2026
- May 19, 2026 · score 22 · 18.6 km
- July 12, 2026 · score 22 · 19.7 km
How we know
Confirmed by 29 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 71 % 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) | 22 / 100 |
| Our confidence | 71% |
| Coordinates | 35.6172, -99.2300 |
| Nearest City | Altus (109 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-10T01:24:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.126358c7f5e15f0a9fd8cafafbfe5ac5 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Caddo, OK; Comanche, OK; Kiowa, OK; Washita, OK; Alfalfa, OK; Ellis, OK; Harper, OK; Major, OK; Woods, OK; Woodward, OK; Beckham, OK; Greer, OK; Kiowa, OK; Washita, OK and 2 more areas |
| Headline | Severe Thunderstorm Warning issued May 9 at 8:24PM CDT until May 9 at 8:45PM CDT by NWS Norman OK |
| Expires | 2026-05-09T20:45:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.126358c7f5e15f0a9fd8cafafbfe5ac5b72cd588.001.1","noaa_urn:oid:2.49.0.1.840.0.52f771e137c5763f35c040158e64ab39755de92f.001.1","noaa_urn:oid:2.49.0.1.840.0.15715aea847222453443e0f2bad503032118fc94.001.1","noaa_urn:oid:2.49.0.1.840.0.5617218a2cf7786f58ee49bfc0da927ff2054493.002.1","noaa_urn:oid:2.49.0.1.840.0.2108d4ef2cf51c5db9b8e281128e95a1e3d8d31d.002.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.75 |
| Iem Unit | Inch |
| Iem City | 2 WSW Sayre |
| Iem County | Beckham |
| Iem State | OK |
| Iem Wfo | OUN |
| Iem Remark | Location is approximate. |
| MergedSources | [{"id":"iem_H_35.320_-99.160_1778370900000","source":"iem","severity":"low","severityValue":25,"timestamp":1778370900000,"latitude":35.32,"longitude":-99.16},{"id":"iem_G_35.480_-98.480_1778372400000","source":"iem","severity":"low","severityValue":25,"timestamp":1778372400000,"latitude":35.48,"longitude":-98.48},{"id":"iem_H_35.170_-98.920_1778373420000","source":"iem","severity":"low","severityValue":25,"timestamp":1778373420000,"latitude":35.17,"longitude":-98.92},{"id":"iem_H_35.400_-99.470_1778368680000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368680000,"latitude":35.4,"longitude":-99.47},{"id":"iem_G_35.510_-98.780_1778371200000","source":"iem","severity":"low","severityValue":25,"timestamp":1778371200000,"latitude":35.51,"longitude":-98.78},{"id":"iem_H_35.380_-99.520_1778365800000","source":"iem","severity":"low","severityValue":25,"timestamp":1778365800000,"latitude":35.38,"longitude":-99.52},{"id":"iem_H_35.410_-99.680_1778364900000","source":"iem","severity":"low","severityValue":25,"timestamp":1778364900000,"latitude":35.41,"longitude":-99.68},{"id":"iem_H_35.400_-99.470_1778368320000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368320000,"latitude":35.4,"longitude":-99.47},{"id":"iem_H_35.360_-99.200_1778368200000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368200000,"latitude":35.36,"longitude":-99.2},{"id":"iem_H_35.370_-99.400_1778367420000","source":"iem","severity":"low","severityValue":25,"timestamp":1778367420000,"latitude":35.37,"longitude":-99.4},{"id":"iem_H_35.390_-99.120_1778368860000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368860000,"latitude":35.39,"longitude":-99.12},{"id":"iem_H_35.410_-99.420_1778368440000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368440000,"latitude":35.41,"longitude":-99.42},{"id":"iem_H_35.410_-99.910_1778372220000","source":"iem","severity":"low","severityValue":25,"timestamp":1778372220000,"latitude":35.41,"longitude":-99.91},{"id":"iem_H_35.410_-99.480_1778368800000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368800000,"latitude":35.41,"longitude":-99.48},{"id":"iem_H_35.360_-99.310_1778367420000","source":"iem","severity":"low","severityValue":25,"timestamp":1778367420000,"latitude":35.36,"longitude":-99.31},{"id":"iem_H_35.360_-99.360_1778367720000","source":"iem","severity":"low","severityValue":25,"timestamp":1778367720000,"latitude":35.36,"longitude":-99.36},{"id":"iem_H_35.300_-98.990_1778372220000","source":"iem","severity":"low","severityValue":25,"timestamp":1778372220000,"latitude":35.3,"longitude":-98.99},{"id":"iem_H_35.410_-99.430_1778368800000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368800000,"latitude":35.41,"longitude":-99.43},{"id":"iem_H_35.410_-99.440_1778368740000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368740000,"latitude":35.41,"longitude":-99.44},{"id":"iem_H_35.290_-99.190_1778371200000","source":"iem","severity":"low","severityValue":25,"timestamp":1778371200000,"latitude":35.29,"longitude":-99.19},{"id":"iem_H_35.390_-99.510_1778365920000","source":"iem","severity":"low","severityValue":25,"timestamp":1778365920000,"latitude":35.39,"longitude":-99.51},{"id":"iem_H_35.290_-98.990_1778372100000","source":"iem","severity":"low","severityValue":25,"timestamp":1778372100000,"latitude":35.29,"longitude":-98.99},{"id":"iem_H_35.390_-99.510_1778366040000","source":"iem","severity":"low","severityValue":25,"timestamp":1778366040000,"latitude":35.39,"longitude":-99.51},{"id":"iem_H_35.300_-99.640_1778374260000","source":"iem","severity":"low","severityValue":25,"timestamp":1778374260000,"latitude":35.3,"longitude":-99.64},{"id":"iem_H_35.410_-99.700_1778364600000","source":"iem","severity":"low","severityValue":25,"timestamp":1778364600000,"latitude":35.41,"longitude":-99.7},{"id":"iem_H_35.370_-98.980_1778370180000","source":"iem","severity":"low","severityValue":25,"timestamp":1778370180000,"latitude":35.37,"longitude":-98.98},{"id":"iem_H_35.350_-99.180_1778368620000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368620000,"latitude":35.35,"longitude":-99.18},{"id":"iem_H_35.290_-99.680_1778374320000","source":"iem","severity":"low","severityValue":25,"timestamp":1778374320000,"latitude":35.29,"longitude":-99.68}] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.