This alert expired on 15 March 2026 at 22:00 UTC. It is kept here as a record.
It is the 4th strongest of the 54 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: Snow Squall Warning issued March 15 at 4:38PM CDT until March 15 at 5:00PM CDT by NWS Kansas City/Pleasant Hill MO
An estimated 76,780 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 10, 2026 · score 43 · 7.4 km
- July 4, 2026 · score 39 · 9.7 km
- June 8, 2026 · score 39 · 16.9 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 88 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 88% |
| Coordinates | 39.7153, -94.6347 |
| Nearest City | Saint Joseph (19 km) |
| Population Exposed | 76.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T21:38:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Snow-Squall-Warning_noaa_urn-oid-2_49_0_1_840_0_9c915a9eaeae6eb10cce6f12ff0d8640 |
Score Breakdown
Technical Details
| Event | Snow Squall Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Johnson, MO; Lafayette, MO; Atchison, MO; Holt, MO |
| Headline | Snow Squall Warning issued March 15 at 4:38PM CDT until March 15 at 5:00PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-03-15T17:00:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9c915a9eaeae6eb10cce6f12ff0d8640e7c9480b.001.1","noaa_urn:oid:2.49.0.1.840.0.57174af84fa61a81a1a6101e4cd1b836ade1d9f6.001.1"] |
| Iem TypeSummary | O |
| Iem City | Saint Joseph |
| Iem County | Buchanan |
| Iem State | MO |
| Iem Wfo | EAX |
| Iem Remark | Downed wires from strong winds near Isadore Street. |
| MergedSources | [{"id":"iem_N_39.660_-94.090_1773596100000","source":"iem","severity":"low","severityValue":25,"timestamp":1773596100000,"latitude":39.66,"longitude":-94.09},{"id":"iem_O_39.280_-93.970_1773590340000","source":"iem","severity":"low","severityValue":25,"timestamp":1773590340000,"latitude":39.28,"longitude":-93.97},{"id":"iem_N_40.200_-94.600_1773592920000","source":"iem","severity":"low","severityValue":25,"timestamp":1773592920000,"latitude":40.2,"longitude":-94.6},{"id":"iem_N_39.370_-94.360_1773599580000","source":"iem","severity":"low","severityValue":25,"timestamp":1773599580000,"latitude":39.37,"longitude":-94.36},{"id":"iem_O_39.770_-94.850_1773597300000","source":"iem","severity":"low","severityValue":25,"timestamp":1773597300000,"latitude":39.77,"longitude":-94.85}] |
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 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.
Calamity.live data shows a weather event with CalamityScore 39/100, near Saint Joseph (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.