Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 10 May 2026 at 00:30 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 9 at 6:43PM CDT until May 9 at 7:30PM CDT by NWS Norman OK
How we know
16 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.69/1 |
| Coordinates | 35.3919, -99.5411 |
| Nearest City | Altus (86 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-09T23:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a0d20c2c38be1b0754fba6ab4a95a2ed |
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: 2026-05-09T23:43:00.000Z.
First archived: 2026-05-09T23:45:32.194Z. 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 | Beckham, OK; Custer, OK; Roger Mills, OK; Washita, OK; Washita, OK; Beckham, OK; Kiowa, OK; Washita, OK and 2 more areas |
| Headline | Severe Thunderstorm Warning issued May 9 at 6:43PM CDT until May 9 at 7:30PM CDT by NWS Norman OK |
| Expires | 2026-05-09T19:30:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a0d20c2c38be1b0754fba6ab4a95a2ed84bbe060.001.1","noaa_urn:oid:2.49.0.1.840.0.5cbb3d96c7d1ce854acb09db5f94eb10678585fd.001.1","noaa_urn:oid:2.49.0.1.840.0.2bea3e771cef670ba546d5c6fd7bd88cc2f2cc10.001.1","noaa_urn:oid:2.49.0.1.840.0.4616448ee2871fcdec9944a62da05997c500e880.002.1","noaa_urn:oid:2.49.0.1.840.0.085dd95a1a5b551fc6fe8a7ac1fa76bf79444d77.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | Burns Flat |
| Iem County | Washita |
| Iem State | OK |
| Iem Wfo | OUN |
| Iem Remark | Report from mPING: Ping Pong Ball (1.50 in.). |
| MergedSources | [{"id":"iem_H_35.400_-99.470_1778368680000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368680000,"latitude":35.4,"longitude":-99.47},{"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_35.370_-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_-99.480_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_35.410_-99.440_1778368740000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368740000,"latitude":35.41,"longitude":-99.44},{"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_35.390_-99.510_1778366040000","source":"iem","severity":"low","severityValue":25,"timestamp":1778366040000,"latitude":35.39,"longitude":-99.51},{"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_35.350_-99.180_1778368620000","source":"iem","severity":"low","severityValue":25,"timestamp":1778368620000,"latitude":35.35,"longitude":-99.18}] |
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.
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