Right now
The most recent data we hold from NOAA arrived 3 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 17 May 2026 at 07:04 UTC. It is kept here as a record.
It is the 30th strongest of the 66 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 17 at 1:54AM CDT until May 17 at 2:00AM CDT by NWS Topeka KS
Nearby, since 15 March 2026
- June 21, 2026 · score 39 · 15.2 km
- August 10, 2026 · score 22 · 21.2 km
- June 6, 2026 · score 22 · 23.7 km
How we know
Confirmed by 3 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 | 39.9436, -95.4134 |
| Nearest City | Saint Joseph (52 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-17T06:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.53e198781af4c68cbe41b07302e17951 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Brown, KS; Atchison, KS; Doniphan, KS; Andrew, MO; Buchanan, MO; Holt, MO; Nodaway, MO; Richardson, NE |
| Headline | Severe Thunderstorm Warning issued May 17 at 1:54AM CDT until May 17 at 2:00AM CDT by NWS Topeka KS |
| Expires | 2026-05-17T02:04:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.53e198781af4c68cbe41b07302e179515fd90f64.001.1","noaa_urn:oid:2.49.0.1.840.0.643137161c2a50d947b0f8410e36e64a5f80b21e.001.1","noaa_urn:oid:2.49.0.1.840.0.be91d3056b4cf9bf003ac7683664876875043bd9.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | Maryville |
| Iem County | Nodaway |
| Iem State | MO |
| Iem Wfo | EAX |
| Iem Remark | Social media report. Time estimated from radar. |
| MergedSources | [{"id":"iem_G_39.800_-96.160_1778996640000","source":"iem","severity":"low","severityValue":25,"timestamp":1778996640000,"latitude":39.8,"longitude":-96.16},{"id":"iem_H_40.340_-94.870_1778979540000","source":"iem","severity":"low","severityValue":25,"timestamp":1778979540000,"latitude":40.34,"longitude":-94.87}] |
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.