Right now
The most recent data we hold from NOAA arrived 1 minute 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 12 September 2026 at 20:15 UTC. It is kept here as a record.
It is the 52nd strongest of the 83 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 31 July 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 12 at 2:39PM CDT until September 12 at 3:15PM CDT by NWS Topeka KS
Nearby, since 15 March 2026
- June 13, 2026 · score 22 · 9.8 km
- June 21, 2026 · score 46 · 12.7 km
- April 11, 2026 · score 22 · 14.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 65 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 | Medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 65% |
| Coordinates | 39.9120, -97.6360 |
| Nearest City | Hastings (99 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-12T19:39:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.6f446fc2aa8a6b977871a2ded8086c232a2cf519.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Republic, KS |
| Headline | Severe Thunderstorm Warning issued September 12 at 2:39PM CDT until September 12 at 3:15PM CDT by NWS Topeka KS |
| Expires | 2026-09-12T15:15:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 0.8 |
| Iem Unit | Inch |
| Iem City | Geneva |
| Iem County | Fillmore |
| Iem State | NE |
| Iem Wfo | GID |
| Iem Remark | Report of nickel size hail in Geneva. From X. Time estimated from radar. |
| MergedSources | [{"id":"iem_H_40.500_-97.960_1789221600000","source":"iem","severity":"low","severityValue":25,"timestamp":1789221600000,"latitude":40.5,"longitude":-97.96},{"id":"iem_H_40.530_-97.610_1789222500000","source":"iem","severity":"low","severityValue":25,"timestamp":1789222500000,"latitude":40.53,"longitude":-97.61}] |
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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