Right now
The most recent data we hold from NOAA arrived 2 hours 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 00:45 UTC. It is kept here as a record.
No stronger detection stands among the 43 recorded within 20 km of this point since 15 March 2026 — 27 others scored the same. Another comparable one was recorded here earlier the same day. 16 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 16 at 6:57PM CDT until May 16 at 7:45PM CDT by NWS Kansas City/Pleasant Hill MO
How we know
14 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.69/1 |
| Coordinates | 40.4447, -94.0758 |
| Nearest City | Saint Joseph (100 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-16T23:57:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.8c5eecb928277adf1cd941febcb3b843 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-16T23:57:00.000Z.
First archived: 2026-05-17T00:01:00.503Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grundy, MO; Mercer, MO; Sullivan, MO; Grundy, MO; Linn, MO; Livingston, MO; Sullivan, MO; Ringgold, IA; Taylor, IA and 2 more areas |
| Headline | Severe Thunderstorm Warning issued May 16 at 6:57PM CDT until May 16 at 7:45PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-05-16T19:45:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8c5eecb928277adf1cd941febcb3b843f5b0d48f.001.1","noaa_urn:oid:2.49.0.1.840.0.74e48ff0187e3b56e01dfc624c8a6b15071039f6.001.1","noaa_urn:oid:2.49.0.1.840.0.8d23155b7d50dc0ab08e76e6f5b5dad51dc731c0.001.1","noaa_urn:oid:2.49.0.1.840.0.8d96ccb90b8ff1806696eaada3039068a538c0f2.001.1","noaa_urn:oid:2.49.0.1.840.0.f38155a5f2fe6ef2705d6ae19c0c9ce5d7474d11.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 71 |
| Iem Unit | MPH |
| Iem City | 2 WSW Laredo |
| Iem County | Grundy |
| Iem State | MO |
| Iem Wfo | EAX |
| Iem Remark | Personal Weather Station recorded. |
| MergedSources | [{"id":"iem_H_40.130_-93.620_1778967540000","source":"iem","severity":"low","severityValue":25,"timestamp":1778967540000,"latitude":40.13,"longitude":-93.62},{"id":"iem_F_40.080_-93.590_1778971680000","source":"iem","severity":"low","severityValue":25,"timestamp":1778971680000,"latitude":40.08,"longitude":-93.59},{"id":"iem_H_40.260_-93.960_1778968860000","source":"iem","severity":"low","severityValue":25,"timestamp":1778968860000,"latitude":40.26,"longitude":-93.96},{"id":"iem_H_40.090_-93.620_1778970660000","source":"iem","severity":"low","severityValue":25,"timestamp":1778970660000,"latitude":40.09,"longitude":-93.62},{"id":"iem_H_40.260_-93.930_1778969640000","source":"iem","severity":"low","severityValue":25,"timestamp":1778969640000,"latitude":40.26,"longitude":-93.93},{"id":"iem_H_40.120_-93.610_1778970360000","source":"iem","severity":"low","severityValue":25,"timestamp":1778970360000,"latitude":40.12,"longitude":-93.61},{"id":"iem_H_40.300_-94.030_1778968140000","source":"iem","severity":"low","severityValue":25,"timestamp":1778968140000,"latitude":40.3,"longitude":-94.03},{"id":"iem_H_40.230_-94.010_1778968680000","source":"iem","severity":"low","severityValue":25,"timestamp":1778968680000,"latitude":40.23,"longitude":-94.01},{"id":"iem_H_40.060_-93.580_1778969820000","source":"iem","severity":"low","severityValue":25,"timestamp":1778969820000,"latitude":40.06,"longitude":-93.58},{"id":"iem_H_40.080_-93.550_1778968920000","source":"iem","severity":"low","severityValue":25,"timestamp":1778968920000,"latitude":40.08,"longitude":-93.55},{"id":"iem_H_40.080_-93.580_1778969460000","source":"iem","severity":"low","severityValue":25,"timestamp":1778969460000,"latitude":40.08,"longitude":-93.58},{"id":"iem_H_40.070_-93.580_1778969460000","source":"iem","severity":"low","severityValue":25,"timestamp":1778969460000,"latitude":40.07,"longitude":-93.58},{"id":"iem_G_40.010_-93.480_1778970540000","source":"iem","severity":"low","severityValue":25,"timestamp":1778970540000,"latitude":40.01,"longitude":-93.48}] |
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.
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