Right now
The most recent data we hold from NOAA arrived 4 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 17 May 2026 at 00:00 UTC. It is kept here as a record.
No stronger detection stands among the 35 recorded within 20 km of this point since 15 March 2026 — 22 others scored the same. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 16 at 6:41PM CDT until May 16 at 7:00PM CDT by NWS Kansas City/Pleasant Hill MO
Nearby, since 15 March 2026
- May 16, 2026 · score 22 · 9.5 km
How we know
7 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 | 40.5110, -94.1464 |
| Nearest City | Saint Joseph (102 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-16T23:41:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.04f9cd567a0f10c65a4cf2d8fb95569f |
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: 2026-05-16T23:41:00.000Z.
First archived: 2026-05-16T23:45:41.505Z. 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; Adams, IA; Taylor, IA; Grundy, MO; Linn, MO; Livingston, MO; Sullivan, MO and 1 more areas |
| Headline | Severe Thunderstorm Warning issued May 16 at 6:41PM CDT until May 16 at 7:00PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-05-16T19:00:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.04f9cd567a0f10c65a4cf2d8fb95569ff605d4c8.001.1","noaa_urn:oid:2.49.0.1.840.0.f38155a5f2fe6ef2705d6ae19c0c9ce5d7474d11.001.1","noaa_urn:oid:2.49.0.1.840.0.717f1c48343055abeb5383d7e633e98d5f3a3947.001.1","noaa_urn:oid:2.49.0.1.840.0.843f12d58212a42e76fc01cc88158e5fdb116e54.001.1","noaa_urn:oid:2.49.0.1.840.0.d76aa06e71982aaffe37f6364b2824306c2fac3e.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 2 |
| Iem Unit | Inch |
| Iem City | 2 N Gravity |
| Iem County | Taylor |
| Iem State | IA |
| Iem Wfo | DMX |
| Iem Remark | Via Spotter Network. |
| MergedSources | [{"id":"iem_T_40.750_-94.760_1778971860000","source":"iem","severity":"low","severityValue":25,"timestamp":1778971860000,"latitude":40.75,"longitude":-94.76},{"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_40.860_-94.770_1778970660000","source":"iem","severity":"low","severityValue":25,"timestamp":1778970660000,"latitude":40.86,"longitude":-94.77},{"id":"iem_T_40.750_-94.730_1778972040000","source":"iem","severity":"low","severityValue":25,"timestamp":1778972040000,"latitude":40.75,"longitude":-94.73},{"id":"iem_H_40.800_-94.890_1778969400000","source":"iem","severity":"low","severityValue":25,"timestamp":1778969400000,"latitude":40.8,"longitude":-94.89},{"id":"iem_H_40.790_-94.740_1778971560000","source":"iem","severity":"low","severityValue":25,"timestamp":1778971560000,"latitude":40.79,"longitude":-94.74}] |
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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