Right now
The most recent data we hold from NOAA arrived 2 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 04:45 UTC. It is kept here as a record.
It is the 4th strongest of the 52 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 17 at 11:20PM CDT until May 17 at 11:45PM CDT by NWS Topeka KS
An estimated 76,780 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 5, 2026 · score 63 · 8.7 km
- June 21, 2026 · score 39 · 13.3 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 90 % 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) | 39 / 100 |
| Our confidence | 90% |
| Coordinates | 39.9139, -95.2292 |
| Nearest City | Saint Joseph (36 km) |
| Population Exposed | 76.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T04:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.866fcb529a9dbcf65d10b00f9b3fab93 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Brown, KS; Jackson, KS; Andrew, MO; Atchison, MO; Gentry, MO; Holt, MO; Nodaway, MO; Worth, MO |
| Headline | Severe Thunderstorm Warning issued May 17 at 11:20PM CDT until May 17 at 11:45PM CDT by NWS Topeka KS |
| Expires | 2026-05-17T23:45:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.866fcb529a9dbcf65d10b00f9b3fab93b4549a0c.002.1","noaa_urn:oid:2.49.0.1.840.0.5100e5a7213d480bac1973e81859a6ab9d7e0d3c.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 58 |
| Iem Unit | MPH |
| Iem City | 3 NNW Maryville |
| Iem County | Nodaway |
| Iem State | MO |
| Iem Wfo | EAX |
| Iem Remark | PWS measured 58 mph wind gust north of Maryville. |
| MergedSources | [{"id":"iem_G_40.180_-95.980_1779072900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779072900000,"latitude":40.18,"longitude":-95.98},{"id":"iem_G_40.550_-95.300_1779075420000","source":"iem","severity":"low","severityValue":25,"timestamp":1779075420000,"latitude":40.55,"longitude":-95.3},{"id":"iem_G_40.390_-94.890_1779077160000","source":"iem","severity":"low","severityValue":25,"timestamp":1779077160000,"latitude":40.39,"longitude":-94.89}] |
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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.