Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 13 km from here.
This alert expired on 1 June 2026 at 06:00 UTC. It is kept here as a record.
No stronger detection stands among the 50 recorded within 20 km of this point since 15 March 2026 — 9 others scored the same. Another comparable one was recorded here earlier the same day. 21 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 12:33AM CDT until June 1 at 1:00AM CDT by NWS Topeka KS
An estimated 24,649 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 4, 2026 · score 34 · 14.0 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 40 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 | High |
| Calamity Score (ours) | 40 / 100 |
| Our confidence | 90% |
| Coordinates | 38.3669, -95.8513 |
| Nearest City | Emporia (29 km) |
| Population Exposed | 24.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T05:33:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.1ae8a69a45bb2c08254bc7dd7b3cf707 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Lyon, KS; Lyon, KS; Wabaunsee, KS; Anderson, KS; Coffey, KS and 6 more areas |
| Headline | Severe Thunderstorm Warning issued June 1 at 12:33AM CDT until June 1 at 1:00AM CDT by NWS Topeka KS |
| Expires | 2026-06-01T01:00:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1ae8a69a45bb2c08254bc7dd7b3cf7079e0cbb3c.001.1","noaa_urn:oid:2.49.0.1.840.0.ffff3b6193441fd26b44f27de1741aae7f8a07c1.001.1","noaa_urn:oid:2.49.0.1.840.0.4e351043864e3652897c3a3c40b375ab97a5292b.001.1","noaa_urn:oid:2.49.0.1.840.0.ccc4b87449c626e59707ea07a35d24e7afdc254e.001.1","noaa_urn:oid:2.49.0.1.840.0.b43e7cbaff8cc2951fee4741fa2dfe01a687c12f.001.1","noaa_urn:oid:2.49.0.1.840.0.086951fc0523e586563dc77058d7b7eade6ab752.001.1","noaa_urn:oid:2.49.0.1.840.0.e6772722563978b1fbb887e2330f85ad94cc757c.001.1","noaa_urn:oid:2.49.0.1.840.0.886d72cce82db48e2e21b28951e5427800814e4d.001.1","noaa_urn:oid:2.49.0.1.840.0.03d05ad3f2fe9f795122da34ba6992ccfa0d0ee6.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 175 |
| Spc Location | 6 W Le Roy |
| Spc County | Coffey |
| Spc State | KS |
| Spc Comments | Report from mPING: Golf Ball (1.75 in.). (TOP) |
| Iem TypeSummary | H |
| Iem Magnitude | 1.75 |
| Iem Unit | Inch |
| Iem City | 6 W Le Roy |
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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