Right now
The most recent data we hold from NOAA arrived 8 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 07:15 UTC. It is kept here as a record.
It is the 23rd strongest of the 62 detections recorded within 20 km of this point since 15 March 2026. 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 17 at 1:39AM CDT until May 17 at 2:15AM CDT by NWS Kansas City/Pleasant Hill MO
Nearby, since 15 March 2026
- June 21, 2026 · score 39 · 16.1 km
- June 6, 2026 · score 22 · 21.3 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 | 39.9364, -95.4482 |
| Nearest City | Saint Joseph (54 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-17T06:39:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.2e9d57243a6c5fab0ed9180ba1d44afb |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Atchison, KS; Doniphan, KS; Andrew, MO; Buchanan, MO; Holt, MO; Nodaway, MO; Richardson, NE; Brown, KS |
| Headline | Severe Thunderstorm Warning issued May 17 at 1:39AM CDT until May 17 at 2:15AM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-05-17T02:15:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2e9d57243a6c5fab0ed9180ba1d44afbd0f306a5.001.1","noaa_urn:oid:2.49.0.1.840.0.c2796bdab1d446ecf01ba43a261540765b3f20e2.002.1","noaa_urn:oid:2.49.0.1.840.0.549fbf2b626b5fe898ee6e8b853230b1fe8724aa.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.