Calamity
MediumSevere WeatherCalamity Score: 28

Severe Weather in United States

OttawaUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 23 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 31 May 2026 at 11:48 UTC. It is kept here as a record.

It is the 37th strongest of the 84 detections recorded within 20 km of this point since 15 May 2026. Another comparable one was recorded here earlier the same day. 35 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Warning issued May 31 at 6:38AM CDT until May 31 at 6:45AM CDT by NWS Wichita KS

An estimated 47,813 people live within 50 km of this point.

Nearby, since 15 May 2026

How we know

Confirmed by 2 independent sources, including NOAA.

Our own score for this event is 28 out of 100, at 85 % 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

TypeSevere Weather
SeverityMedium
Calamity Score (ours)28 / 100
Our confidence85%
Coordinates39.0317, -97.9203
Nearest CitySalina (34 km)
Population Exposed47.8K within 50 km
Impact Tiersignificant
Timestamp2026-05-31T14:40:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.9d8c5ded9c19d62a8c6ac9ebab69b34e

Score Breakdown

35
intensity
40
population
0
cascading
18
historical

Technical Details

EventFlood Warning
UrgencyImmediate
CertaintyLikely
AreaDescSaline, KS; Ottawa, KS; Lincoln, KS; Russell, KS
HeadlineFlood Warning issued May 31 at 6:38AM CDT until May 31 at 6:45AM CDT by NWS Wichita KS
Expires2026-05-31T06:48:00-05:00
SenderNameNWS Wichita KS
HasExactCoordstrue
MergedCount3
MergedIds["noaa_urn:oid:2.49.0.1.840.0.9d8c5ded9c19d62a8c6ac9ebab69b34e33f45271.001.1","noaa_urn:oid:2.49.0.1.840.0.82fe2f644acbdce3bab448c431439660a461a4c5.001.1","noaa_urn:oid:2.49.0.1.840.0.51a594d14e9c6aa55b729d0e1c206209514e75d7.001.1"]
Spc ReportTypewind
Spc Speed60
Spc Location2 S Sylvan Grove
Spc CountyLincoln
Spc StateKS
Spc Comments50 to 60 mph winds with intense t-storm. (ICT)
MergedSources[{"id":"spc_wind_38.99_-98.40_42","source":"spc","severity":"medium","severityValue":45,"timestamp":1780227326270,"latitude":38.99,"longitude":-98.4}]

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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