This alert expired on 19 May 2026 at 19:00 UTC. It is kept here as a record.
No stronger detection stands among the 33 recorded within 20 km of this point since 15 April 2026 — 6 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 19 at 8:40AM CDT until May 19 at 2:00PM CDT by NWS Springfield MO
An estimated 135,657 people live within 50 km of this point.
Nearby, since 15 April 2026
- June 12, 2026 · score 37 · 14.7 km
- May 30, 2026 · score 37 · 17.4 km
- May 19, 2026 · score 39 · 19.7 km
How we know
Confirmed by 10 independent sources, including NOAA.
Our own score for this event is 43 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) | 43 / 100 |
| Our confidence | 90% |
| Coordinates | 36.6540, -94.2920 |
| Nearest City | Bella Vista (19 km) |
| Population Exposed | 135.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T13:40:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.64454df5ca548abcfbaf7ad0dda1853cb81d8111.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | McDonald, MO |
| Headline | Flash Flood Warning issued May 19 at 8:40AM CDT until May 19 at 2:00PM CDT by NWS Springfield MO |
| Expires | 2026-05-19T14:00:00-05:00 |
| SenderName | NWS Springfield MO |
| HasExactCoords | true |
| Iem TypeSummary | R |
| Iem Magnitude | 3.41 |
| Iem Unit | Inch |
| Iem City | Rocky Comfort |
| Iem County | McDonald |
| Iem State | MO |
| Iem Wfo | SGF |
| Iem Remark | Since midnight. |
| MergedSources | [{"id":"iem_R_37.080_-94.690_1779194940000","source":"iem","severity":"low","severityValue":25,"timestamp":1779194940000,"latitude":37.08,"longitude":-94.69},{"id":"iem_R_36.730_-94.410_1779194700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779194700000,"latitude":36.73,"longitude":-94.41},{"id":"iem_R_37.030_-94.520_1779194400000","source":"iem","severity":"low","severityValue":25,"timestamp":1779194400000,"latitude":37.03,"longitude":-94.52},{"id":"iem_F_36.870_-94.840_1779194700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779194700000,"latitude":36.87,"longitude":-94.84},{"id":"iem_R_37.020_-94.740_1779194700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779194700000,"latitude":37.02,"longitude":-94.74},{"id":"iem_D_36.190_-94.550_1779196020000","source":"iem","severity":"low","severityValue":25,"timestamp":1779196020000,"latitude":36.19,"longitude":-94.55},{"id":"iem_R_36.980_-94.540_1779194820000","source":"iem","severity":"low","severityValue":25,"timestamp":1779194820000,"latitude":36.98,"longitude":-94.54},{"id":"iem_R_36.900_-94.530_1779195300000","source":"iem","severity":"low","severityValue":25,"timestamp":1779195300000,"latitude":36.9,"longitude":-94.53},{"id":"iem_R_36.750_-94.090_1779197340000","source":"iem","severity":"low","severityValue":25,"timestamp":1779197340000,"latitude":36.75,"longitude":-94.09}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 near Bella Vista?
Calamity.live data shows a weather event with CalamityScore 43/100, near Bella Vista (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.