This alert expired on 9 May 2026 at 01:15 UTC. It is kept here as a record.
No stronger detection stands among the 8 recorded within 20 km of this point since 24 April 2026 — 4 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 8 at 7:24PM CDT until May 8 at 8:15PM CDT by NWS Norman OK
An estimated 144,514 people live within 50 km of this point.
Nearby, since 24 April 2026
- July 31, 2026 · score 43 · 6.5 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 43 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) | 43 / 100 |
| Our confidence | 91% |
| Coordinates | 34.8822, -97.6377 |
| Nearest City | Chickasha (33 km) |
| Population Exposed | 144.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T00:24:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.1838f1f9537f40aa2efa352df6692449 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cleveland, OK; McClain, OK; Pottawatomie, OK; Cleveland, OK; Garvin, OK; McClain, OK; Caddo, OK; Comanche, OK; Grady, OK and 5 more areas |
| Headline | Severe Thunderstorm Warning issued May 8 at 7:24PM CDT until May 8 at 8:15PM CDT by NWS Norman OK |
| Expires | 2026-05-08T20:15:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1838f1f9537f40aa2efa352df669244952914f55.001.1","noaa_urn:oid:2.49.0.1.840.0.c33a1f5283154bf6a7f5761ef6a044778b21a21c.001.1","noaa_urn:oid:2.49.0.1.840.0.0c086e259aacd8079f594169b8f01872d789f309.001.1","noaa_urn:oid:2.49.0.1.840.0.a4292c550b82341e6bade3d62046663e94bea0f4.001.1","noaa_urn:oid:2.49.0.1.840.0.3ed1be0eeabdc27e737498e3091d3cac0973c0c1.001.1","noaa_urn:oid:2.49.0.1.840.0.4eedaf8a4d4bcd74a4adda193695208d7b7f6b96.001.1","noaa_urn:oid:2.49.0.1.840.0.a4f3cf7c74986776df59b74b9552553062344f67.001.1","noaa_urn:oid:2.49.0.1.840.0.a48b731d3a33d9e6a6ccb1b05fdb7750ea66a8c1.001.1","noaa_urn:oid:2.49.0.1.840.0.3ffd5a61086067fbb36236cd4cefdc18c5309e04.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 5 NE Verden |
| Iem County | Grady |
| Iem State | OK |
| Iem Wfo | OUN |
| MergedSources | [{"id":"iem_H_35.080_-98.030_1778283840000","source":"iem","severity":"low","severityValue":25,"timestamp":1778283840000,"latitude":35.08,"longitude":-98.03},{"id":"iem_H_35.150_-98.030_1778283300000","source":"iem","severity":"low","severityValue":25,"timestamp":1778283300000,"latitude":35.15,"longitude":-98.03},{"id":"iem_H_35.150_-98.030_1778283000000","source":"iem","severity":"low","severityValue":25,"timestamp":1778283000000,"latitude":35.15,"longitude":-98.03}] |
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 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.