This alert expired on 19 May 2026 at 02:00 UTC. It is kept here as a record.
No stronger detection stands among the 51 recorded within 20 km of this point since 15 April 2026 — 4 others scored the same. The last comparable one was on 17 May 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued May 18 at 8:36PM CDT until May 18 at 9:00PM CDT by NWS Kansas City/Pleasant Hill MO
An estimated 76,780 people live within 50 km of this point.
Nearby, since 15 April 2026
- June 4, 2026 · score 39 · 16.4 km
- June 10, 2026 · score 46 · 16.5 km
- August 9, 2026 · score 22 · 20.0 km
How we know
Confirmed by 8 independent sources, including NOAA.
Our own score for this event is 63 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 | critical |
| Calamity Score (ours) | 63 / 100 |
| Our confidence | 91% |
| Coordinates | 40.0180, -94.3920 |
| Nearest City | Saint Joseph (48 km) |
| Population Exposed | 76.8K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-05-19T01:36:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.7f0adb991bab277c4d749ba103d224dbf224b110.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Andrew, MO; Daviess, MO; DeKalb, MO; Gentry, MO; Harrison, MO |
| Headline | Tornado Warning issued May 18 at 8:36PM CDT until May 18 at 9:00PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-05-18T21:00:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | 4 NW Maryville |
| Iem County | Nodaway |
| Iem State | MO |
| Iem Wfo | EAX |
| Iem Remark | MO SEMA employee reported ping pong ball size hail. |
| MergedSources | [{"id":"iem_H_40.520_-94.590_1779148860000","source":"iem","severity":"low","severityValue":25,"timestamp":1779148860000,"latitude":40.52,"longitude":-94.59},{"id":"iem_G_39.770_-94.910_1779153180000","source":"iem","severity":"low","severityValue":25,"timestamp":1779153180000,"latitude":39.77,"longitude":-94.91},{"id":"iem_T_40.600_-94.630_1779147000000","source":"iem","severity":"low","severityValue":25,"timestamp":1779147000000,"latitude":40.6,"longitude":-94.63},{"id":"iem_H_40.350_-95.100_1779145080000","source":"iem","severity":"low","severityValue":25,"timestamp":1779145080000,"latitude":40.35,"longitude":-95.1},{"id":"iem_T_40.600_-94.630_1779147600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779147600000,"latitude":40.6,"longitude":-94.63},{"id":"iem_H_40.520_-94.610_1779148800000","source":"iem","severity":"low","severityValue":25,"timestamp":1779148800000,"latitude":40.52,"longitude":-94.61},{"id":"iem_H_40.390_-94.930_1779146280000","source":"iem","severity":"low","severityValue":25,"timestamp":1779146280000,"latitude":40.39,"longitude":-94.93}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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.
Want to know when something happens near Saint Joseph?
Calamity.live data shows a weather event with CalamityScore 63/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.