Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 18 May 2026 at 03:15 UTC. It is kept here as a record.
It is the 16th strongest of the 28 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 17 at 9:58PM CDT until May 17 at 10:15PM CDT by NWS Topeka KS
Nearby, since 16 March 2026
- June 11, 2026 · score 43 · 13.0 km
- September 2, 2026 · score 32 · 18.7 km
How we know
Confirmed by 16 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 70 % 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 | 70% |
| Coordinates | 40.6409, -96.0022 |
| Nearest City | Bellevue (56 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-18T02:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b3953d3f48ab8fca9eac4556e231c123 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clay, KS; Dickinson, KS; Ottawa, KS; Pawnee, NE; Barton, KS; Russell, KS and 14 more areas |
| Headline | Severe Thunderstorm Warning issued May 17 at 9:58PM CDT until May 17 at 10:15PM CDT by NWS Topeka KS |
| Expires | 2026-05-17T22:15:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 17 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b3953d3f48ab8fca9eac4556e231c123c499bad2.001.1","noaa_urn:oid:2.49.0.1.840.0.df28cf7057c8e2f01b11ad84f9b1dcb5d722116e.002.1","noaa_urn:oid:2.49.0.1.840.0.007df6712f6d1fc1c535e5b9fe8da16f9ccd74bd.001.1","noaa_urn:oid:2.49.0.1.840.0.1ff1a04957dd0cceb448e50411827ecbbe15dab8.002.1","noaa_urn:oid:2.49.0.1.840.0.16391c7547a759bcd037d0248160ec31e797cfce.001.1","noaa_urn:oid:2.49.0.1.840.0.ff70daf8a09ceac8f63faf20c12d2cdd44fd3d81.001.1","noaa_urn:oid:2.49.0.1.840.0.c978e46666d65bcf1f75805166a81602c7f05c2a.001.1","noaa_urn:oid:2.49.0.1.840.0.5221c41e2f2967172e76ff0ff40f51b0e289cb53.001.1","noaa_urn:oid:2.49.0.1.840.0.79284f2581e3b0689222c9fef002f8f557c38fc5.001.1","noaa_urn:oid:2.49.0.1.840.0.78fae6903737750ed3ddad736ff9a97e22395cab.001.1","noaa_urn:oid:2.49.0.1.840.0.41b1d11d17f6409d8d6d93d2be660d34df175412.001.1","noaa_urn:oid:2.49.0.1.840.0.0f02d82d6d322250c42cca52c071e8a97c3dbc1a.001.1","noaa_urn:oid:2.49.0.1.840.0.bbb470153b6137a5b5f476ee35e7e2611d796050.001.1","noaa_urn:oid:2.49.0.1.840.0.52341eff720f239a004cad4a36753c198ce20bd7.002.1","noaa_urn:oid:2.49.0.1.840.0.a9fb932ad6386f373c020a9ace8947f2012aa64c.001.1","noaa_urn:oid:2.49.0.1.840.0.e5d16c3a5b8bb1fe56ab39b47fa9f439506b473a.001.1","noaa_urn:oid:2.49.0.1.840.0.b474df99c5a896e6ee038acd04ea1a5aef7b0868.002.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 59 |
| Iem Unit | MPH |
| Iem City | 4 WSW Murdock |
| Iem County | Cass |
| Iem State | NE |
| Iem Wfo | OAX |
| Iem Remark | Personal Weather Station. |
| MergedSources | [{"id":"iem_G_41.000_-96.500_1779065040000","source":"iem","severity":"low","severityValue":25,"timestamp":1779065040000,"latitude":41,"longitude":-96.5},{"id":"iem_G_41.010_-96.440_1779065400000","source":"iem","severity":"low","severityValue":25,"timestamp":1779065400000,"latitude":41.01,"longitude":-96.44},{"id":"iem_G_40.500_-96.560_1779066900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779066900000,"latitude":40.5,"longitude":-96.56},{"id":"iem_G_40.820_-96.690_1779064260000","source":"iem","severity":"low","severityValue":25,"timestamp":1779064260000,"latitude":40.82,"longitude":-96.69},{"id":"iem_G_41.300_-95.890_1779067620000","source":"iem","severity":"low","severityValue":25,"timestamp":1779067620000,"latitude":41.3,"longitude":-95.89},{"id":"iem_G_41.130_-96.060_1779068520000","source":"iem","severity":"low","severityValue":25,"timestamp":1779068520000,"latitude":41.13,"longitude":-96.06},{"id":"iem_C_41.150_-96.240_1779065580000","source":"iem","severity":"low","severityValue":25,"timestamp":1779065580000,"latitude":41.15,"longitude":-96.24},{"id":"iem_G_40.960_-96.580_1779066900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779066900000,"latitude":40.96,"longitude":-96.58},{"id":"iem_G_41.180_-96.040_1779068220000","source":"iem","severity":"low","severityValue":25,"timestamp":1779068220000,"latitude":41.18,"longitude":-96.04},{"id":"iem_T_40.990_-95.900_1779068760000","source":"iem","severity":"low","severityValue":25,"timestamp":1779068760000,"latitude":40.99,"longitude":-95.9},{"id":"iem_G_40.890_-96.810_1779064020000","source":"iem","severity":"low","severityValue":25,"timestamp":1779064020000,"latitude":40.89,"longitude":-96.81},{"id":"iem_G_40.850_-96.770_1779065640000","source":"iem","severity":"low","severityValue":25,"timestamp":1779065640000,"latitude":40.85,"longitude":-96.77},{"id":"iem_H_40.800_-96.120_1779069840000","source":"iem","severity":"low","severityValue":25,"timestamp":1779069840000,"latitude":40.8,"longitude":-96.12},{"id":"iem_T_41.070_-96.370_1779061980000","source":"iem","severity":"low","severityValue":25,"timestamp":1779061980000,"latitude":41.07,"longitude":-96.37},{"id":"iem_G_40.900_-96.350_1779067560000","source":"iem","severity":"low","severityValue":25,"timestamp":1779067560000,"latitude":40.9,"longitude":-96.35}] |
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.