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.
5 other detections within 20 km in the last 24 hours, the nearest 7 km from here.
This alert expired on 20 September 2026 at 01:00 UTC. It is kept here as a record.
It is the 4th strongest of the 40 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: Severe Thunderstorm Warning issued September 19 at 7:12PM CDT until September 19 at 8:00PM CDT by NWS Kansas City/Pleasant Hill MO
Nearby, since 15 March 2026
- September 19, 2026 · score 28 · 6.9 km
- July 31, 2026 · score 16 · 13.3 km
- June 6, 2026 · score 22 · 19.6 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 28 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 28 / 100 |
| Legacy data-support index | 0.65/1 |
| Coordinates | 39.6065, -95.8935 |
| Nearest City | Topeka (65 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-20T00:12:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.2ebde05847554a4b6c901bc9c669187dff9668a6.001.1 |
Physical priority index · v5. 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: 2026-09-20T00:12:00.000Z.
First archived: 2026-09-20T00:15:23.286Z. 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 | Doniphan, KS; Andrew, MO; Buchanan, MO; Holt, MO; Clay, KS; Riley, KS; Wabaunsee, KS and 4 more areas |
| Headline | Severe Thunderstorm Warning issued September 19 at 7:12PM CDT until September 19 at 8:00PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-09-19T20:00:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2ebde05847554a4b6c901bc9c669187dff9668a6.001.1","noaa_urn:oid:2.49.0.1.840.0.5fccb16ba758379232bd9a0380b524720f7f0435.001.1","noaa_urn:oid:2.49.0.1.840.0.381a6ae100d17f8b8f9b816c125e420e5a322886.001.1","noaa_urn:oid:2.49.0.1.840.0.42381c69e308cb166057a6f8cb236e8b60526b48.001.1","noaa_urn:oid:2.49.0.1.840.0.7ee8f8ae5077f4ccc7a7ca3ffe239b47b0184582.001.1","noaa_urn:oid:2.49.0.1.840.0.693e0fed3f8bc760466215ee4530c1b79bba5726.001.1","noaa_urn:oid:2.49.0.1.840.0.44c2bf1c851b80a43bc8e525b8e722137adf8272.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 3 E Olsburg |
| Spc County | Pottawatomie |
| Spc State | KS |
| Spc Comments | Quarter size hail between Olsburg and Fostoria. (TOP) |
| MergedSources | [{"id":"spc_hail_39.43_-96.56_81","source":"spc","severity":"high","severityValue":65,"timestamp":1789862920546,"latitude":39.43,"longitude":-96.56}] |
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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