Right now
The most recent data we hold from NOAA arrived 19 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 18 May 2026 at 07:45 UTC. It is kept here as a record.
It is the 13th strongest of the 42 detections recorded within 20 km of this point since 10 April 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 18 at 12:20AM CDT until May 18 at 2:45AM CDT by NWS Topeka KS
Nearby, since 10 April 2026
- June 22, 2026 · score 34 · 14.4 km
- July 1, 2026 · score 22 · 16.1 km
- May 31, 2026 · score 40 · 19.8 km
How we know
18 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 22 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 39.0271, -98.1911 |
| Nearest City | Salina (54 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-18T05:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.5e346c1528a4d850cd05827ca834b2ed |
Physical priority index · v1. 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: 2026-05-18T05:20:00.000Z.
First archived: 2026-05-18T07:37:46.442Z. 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 | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Ottawa, KS; Barton, KS; Ellsworth, KS; Lincoln, KS; Russell, KS |
| Headline | Flash Flood Warning issued May 18 at 12:20AM CDT until May 18 at 2:45AM CDT by NWS Topeka KS |
| Expires | 2026-05-18T02:45:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5e346c1528a4d850cd05827ca834b2edd4b451d7.001.1","noaa_urn:oid:2.49.0.1.840.0.3ba2e78de4343531fb04a8880e41de4da73476f3.001.1"] |
| Iem TypeSummary | F |
| Iem City | 7 NE Wilson |
| Iem County | Lincoln |
| Iem State | KS |
| Iem Wfo | ICT |
| Iem Remark | Water was over the roadway at 60th Road and Colt Drive. |
| MergedSources | [{"id":"iem_H_39.160_-97.670_1779071700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779071700000,"latitude":39.16,"longitude":-97.67},{"id":"iem_G_39.550_-97.650_1779065700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779065700000,"latitude":39.55,"longitude":-97.65},{"id":"iem_H_38.830_-98.610_1779061020000","source":"iem","severity":"low","severityValue":25,"timestamp":1779061020000,"latitude":38.83,"longitude":-98.61},{"id":"iem_H_39.010_-97.880_1779071400000","source":"iem","severity":"low","severityValue":25,"timestamp":1779071400000,"latitude":39.01,"longitude":-97.88},{"id":"iem_H_38.830_-98.470_1779076380000","source":"iem","severity":"low","severityValue":25,"timestamp":1779076380000,"latitude":38.83,"longitude":-98.47},{"id":"iem_H_39.010_-97.960_1779067200000","source":"iem","severity":"low","severityValue":25,"timestamp":1779067200000,"latitude":39.01,"longitude":-97.96},{"id":"iem_G_39.550_-97.650_1779065940000","source":"iem","severity":"low","severityValue":25,"timestamp":1779065940000,"latitude":39.55,"longitude":-97.65},{"id":"iem_H_39.180_-97.850_1779065700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779065700000,"latitude":39.18,"longitude":-97.85},{"id":"iem_H_39.470_-98.130_1779060900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779060900000,"latitude":39.47,"longitude":-98.13},{"id":"iem_H_39.010_-97.880_1779071340000","source":"iem","severity":"low","severityValue":25,"timestamp":1779071340000,"latitude":39.01,"longitude":-97.88},{"id":"iem_F_39.120_-97.720_1779072480000","source":"iem","severity":"low","severityValue":25,"timestamp":1779072480000,"latitude":39.12,"longitude":-97.72},{"id":"iem_H_39.030_-98.130_1779068160000","source":"iem","severity":"low","severityValue":25,"timestamp":1779068160000,"latitude":39.03,"longitude":-98.13},{"id":"iem_G_39.240_-97.740_1779066300000","source":"iem","severity":"low","severityValue":25,"timestamp":1779066300000,"latitude":39.24,"longitude":-97.74},{"id":"iem_H_38.740_-98.670_1779060360000","source":"iem","severity":"low","severityValue":25,"timestamp":1779060360000,"latitude":38.74,"longitude":-98.67},{"id":"iem_C_38.810_-98.230_1779063300000","source":"iem","severity":"low","severityValue":25,"timestamp":1779063300000,"latitude":38.81,"longitude":-98.23},{"id":"iem_H_38.830_-98.530_1779064080000","source":"iem","severity":"low","severityValue":25,"timestamp":1779064080000,"latitude":38.83,"longitude":-98.53},{"id":"iem_F_38.900_-98.390_1779075960000","source":"iem","severity":"low","severityValue":25,"timestamp":1779075960000,"latitude":38.9,"longitude":-98.39}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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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