Right now
The most recent data we hold from NOAA arrived 15 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
4 other detections within 20 km in the last 24 hours, the nearest 9 km from here.
This alert expired on 31 July 2026 at 15:00 UTC. It is kept here as a record.
It is the 80th strongest of the 262 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued July 31 at 8:11AM CDT until July 31 at 10:00AM CDT by NWS Kansas City/Pleasant Hill MO
Urban PEI: 1,806,570 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- July 10, 2026 · score 52 · 7.1 km
- July 10, 2026 · score 52 · 8.8 km
- September 7, 2026 · score 58 · 10.4 km
How we know
20 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 46 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) | 46 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 38.9815, -94.7666 |
| Nearest City | Lenexa (5 km) |
| Urban exposure index (PEI) | 1.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-31T13:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.919d7abe4e3c2bb5a4222689e44c6306 |
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: 2026-07-31T13:11:00.000Z.
First archived: 2026-07-31T14:52:30.614Z. 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 | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Johnson, KS; Leavenworth, KS; Wyandotte, KS; Clay, MO; Platte, MO; Johnson, KS; Jackson, MO |
| Headline | Flood Warning issued July 31 at 8:11AM CDT until July 31 at 10:00AM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-07-31T10:00:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.919d7abe4e3c2bb5a4222689e44c630650b38e5f.001.1","noaa_urn:oid:2.49.0.1.840.0.b30c62ee0b9e99abe8c48fcf4f9eafcf56df008c.001.1"] |
| Iem TypeSummary | R |
| Iem Magnitude | 1.89 |
| Iem Unit | Inch |
| Iem City | Nortonville |
| Iem County | Jefferson |
| Iem State | KS |
| Iem Wfo | TOP |
| Iem Remark | CO-OP Observer station NTVK1 Nortonville. |
| MergedSources | [{"id":"iem_R_38.620_-95.280_1785499200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785499200000,"latitude":38.62,"longitude":-95.28},{"id":"iem_R_38.740_-95.340_1785499200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785499200000,"latitude":38.74,"longitude":-95.34},{"id":"iem_R_39.010_-95.540_1785499200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785499200000,"latitude":39.01,"longitude":-95.54},{"id":"iem_R_39.230_-95.470_1785499200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785499200000,"latitude":39.23,"longitude":-95.47},{"id":"iem_D_39.600_-94.800_1785483120000","source":"iem","severity":"low","severityValue":25,"timestamp":1785483120000,"latitude":39.6,"longitude":-94.8},{"id":"iem_D_39.630_-94.810_1785482580000","source":"iem","severity":"low","severityValue":25,"timestamp":1785482580000,"latitude":39.63,"longitude":-94.81},{"id":"iem_F_38.940_-94.610_1785499200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785499200000,"latitude":38.94,"longitude":-94.61},{"id":"iem_R_39.020_-95.220_1785502320000","source":"iem","severity":"low","severityValue":25,"timestamp":1785502320000,"latitude":39.02,"longitude":-95.22},{"id":"iem_R_38.960_-95.410_1785499200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785499200000,"latitude":38.96,"longitude":-95.41},{"id":"iem_R_38.970_-95.330_1785499200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785499200000,"latitude":38.97,"longitude":-95.33},{"id":"iem_R_38.970_-95.280_1785501420000","source":"iem","severity":"low","severityValue":25,"timestamp":1785501420000,"latitude":38.97,"longitude":-95.28},{"id":"iem_R_39.200_-95.210_1785504480000","source":"iem","severity":"low","severityValue":25,"timestamp":1785504480000,"latitude":39.2,"longitude":-95.21},{"id":"iem_D_39.650_-94.810_1785482700000","source":"iem","severity":"low","severityValue":25,"timestamp":1785482700000,"latitude":39.65,"longitude":-94.81},{"id":"iem_R_38.930_-95.240_1785499200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785499200000,"latitude":38.93,"longitude":-95.24},{"id":"iem_R_38.820_-95.090_1785502800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785502800000,"latitude":38.82,"longitude":-95.09},{"id":"iem_R_38.690_-95.240_1785504360000","source":"iem","severity":"low","severityValue":25,"timestamp":1785504360000,"latitude":38.69,"longitude":-95.24},{"id":"iem_D_39.090_-94.410_1785485700000","source":"iem","severity":"low","severityValue":25,"timestamp":1785485700000,"latitude":39.09,"longitude":-94.41},{"id":"iem_R_39.050_-95.390_1785504660000","source":"iem","severity":"low","severityValue":25,"timestamp":1785504660000,"latitude":39.05,"longitude":-95.39},{"id":"iem_R_39.420_-95.340_1785488400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785488400000,"latitude":39.42,"longitude":-95.34}] |
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.
Review the area, threshold and delivery channel in your account.
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