Right now
The most recent data we hold from NOAA arrived 25 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 7 September 2026 at 00:52 UTC. It is kept here as a record.
No stronger detection stands among the 74 recorded within 20 km of this point since 15 March 2026 — 4 others scored the same. The last comparable one was on 19 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 6 at 7:42PM CDT until September 6 at 7:45PM CDT by NWS Kansas City/Pleasant Hill MO
Urban PEI: 1,655,805 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- September 7, 2026 · score 58 · 0.3 km
- May 19, 2026 · 1.2 km
- July 16, 2026 · 2.5 km
How we know
4 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 58 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 58 / 100 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 39.0903, -94.3956 |
| Nearest City | Independence (2 km) |
| Urban exposure index (PEI) | 1.7M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-07T00:42:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f6010199a1d7935d7f0e500779a4032509568b28.001.1 |
Physical priority index · v4 (historical). 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: 2026-09-07T00:42:00.000Z.
First archived: 2026-09-07T00:46:10.538Z. 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 | Leavenworth, KS; Platte, MO; Cedar, MO; St. Clair, MO; Vernon, MO; Daviess, MO |
| Headline | Severe Thunderstorm Warning issued September 6 at 7:42PM CDT until September 6 at 7:45PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-09-06T19:52:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f6010199a1d7935d7f0e500779a4032509568b28.001.1","noaa_urn:oid:2.49.0.1.840.0.101f76957247e4b39805a89fb6e58cf6f5e6b656.001.1","noaa_urn:oid:2.49.0.1.840.0.c85dfb76632dfddb6982bdca073dbe3a74293546.001.1","noaa_urn:oid:2.49.0.1.840.0.5528ebcee9a507cd4b6d51c89132447d4785fde1.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 2 SE Bonner Springs |
| Spc County | Johnson |
| Spc State | KS |
| Spc Comments | Report from mPING: Quarter (1.00 in.). (EAX) |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 5 SE Winchester |
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.
Review the area, threshold and delivery channel in your account.
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