Right now
The most recent data we hold from NOAA arrived 18 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 20 September 2026 at 00:15 UTC. It is kept here as a record.
It is the 3rd strongest of the 69 detections recorded within 20 km of this point since 23 April 2026. The last comparable one was on 13 September 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 19 at 6:46PM CDT until September 19 at 7:15PM CDT by NWS Topeka KS
Urban PEI: 19,216 within a heuristic 50 km radius; not unique people.
Nearby, since 23 April 2026
- June 11, 2026 · score 58 · 8.8 km
- September 20, 2026 · score 40 · 16.5 km
- June 9, 2026 · score 34 · 17.0 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 40 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) | 40 / 100 |
| Legacy data-support index | 0.85/1 |
| Coordinates | 38.2909, -96.9985 |
| Nearest City | Newton (41 km) |
| Urban exposure index (PEI) | 19.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-19T23:46:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.44c2bf1c851b80a43bc8e525b8e722137adf8272.001.1 |
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: 2026-09-19T23:46:00.000Z.
First archived: 2026-09-19T23:48:41.887Z. 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 | Pottawatomie, KS; Clay, KS; Cloud, KS; Ottawa, KS; Morris, KS; Riley, KS; Wabaunsee, KS and 5 more areas |
| Headline | Severe Thunderstorm Warning issued September 19 at 6:46PM CDT until September 19 at 7:15PM CDT by NWS Topeka KS |
| Expires | 2026-09-19T19:15:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.44c2bf1c851b80a43bc8e525b8e722137adf8272.001.1","noaa_urn:oid:2.49.0.1.840.0.2905d6d5fd898bf19ac6e87bdfb3fb792c1544bf.001.1","noaa_urn:oid:2.49.0.1.840.0.9dff2398a925014c3f16b9fcefe23d73433d9a90.001.1","noaa_urn:oid:2.49.0.1.840.0.95dc6b7f88c82c86571308029bd3394453e487af.001.1","noaa_urn:oid:2.49.0.1.840.0.ea5c27301ee0cf5cdf3c02d118503fee11b772cd.001.1","noaa_urn:oid:2.49.0.1.840.0.90d8ec5b839a304c051518edb0d4ad131b212048.001.1","noaa_urn:oid:2.49.0.1.840.0.7db91dde1f34d397c94b45c90614fa88dd1005e7.001.1","noaa_urn:oid:2.49.0.1.840.0.9bdec9615ff05174362a62e97462c249a14a3388.002.1"] |
| Spc ReportType | wind |
| Spc Speed | 75 |
| Spc Location | 2 NNE Herington |
| Spc County | Morris |
| Spc State | KS |
| Spc Comments | Herington Fire Chief reported measured 75 mph gust at intersection of US-77 and K-4. Sustained winds to around 60 mph. (TOP) |
| MergedSources | [{"id":"spc_wind_38.68_-97.62_51","source":"spc","severity":"medium","severityValue":45,"timestamp":1789856400000,"latitude":38.68,"longitude":-97.62},{"id":"spc_wind_38.87_-96.90_53","source":"spc","severity":"medium","severityValue":45,"timestamp":1789857060000,"latitude":38.87,"longitude":-96.9},{"id":"spc_wind_38.90_-97.24_57","source":"spc","severity":"medium","severityValue":45,"timestamp":1789858320000,"latitude":38.9,"longitude":-97.24},{"id":"spc_wind_38.74_-97.11_61","source":"spc","severity":"high","severityValue":70,"timestamp":1789859340000,"latitude":38.74,"longitude":-97.11},{"id":"spc_wind_38.67_-96.96_62","source":"spc","severity":"medium","severityValue":45,"timestamp":1789859460000,"latitude":38.67,"longitude":-96.96},{"id":"spc_wind_38.66_-96.94_63","source":"spc","severity":"medium","severityValue":45,"timestamp":1789859940000,"latitude":38.66,"longitude":-96.94},{"id":"spc_wind_38.70_-96.93_64","source":"spc","severity":"high","severityValue":70,"timestamp":1789859940000,"latitude":38.7,"longitude":-96.93}] |
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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