Calamity
mediumSevere weatherCalamity Score: 34

Severe weather in United States

OttawaUnited StatesNOAA

This alert expired on 5 June 2026 at 01:00 UTC. It is kept here as a record.

It is the 3rd strongest of the 48 detections recorded within 20 km of this point since 25 April 2026. The last comparable one was on 2 June 2026. 13 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flood Warning issued June 4 at 11:21AM CDT until June 4 at 8:00PM CDT by NWS Hastings NE

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

Nearby, since 25 April 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 34 out of 100, at 81 % confidence.

The score is ours, computed from intensity, exposed population and local history — not the source’s.

Event Data

TypeSevere weather
Severitymedium
Calamity Score (ours)34 / 100
Our confidence81%
Coordinates39.2611, -97.8014
Nearest CitySalina (50 km)
Population Exposed47.8K within 50 km
Impact Tiersignificant
Timestamp2026-06-05T23:21:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.da21cb41fc476d8502f292b23213d01b

Score Breakdown

35
intensity
40
population
0
cascading
80
historical

Technical Details

EventFlood Warning
UrgencyExpected
CertaintyLikely
AreaDescMitchell, KS; Osborne, KS; Ottawa, KS; Clay, KS and 5 more areas
HeadlineFlood Warning issued June 4 at 11:21AM CDT until June 4 at 8:00PM CDT by NWS Hastings NE
Expires2026-06-04T20:00:00-05:00
SenderNameNWS Hastings NE
HasExactCoordstrue
MergedCount9
MergedIds["noaa_urn:oid:2.49.0.1.840.0.da21cb41fc476d8502f292b23213d01ba5138561.001.1","noaa_urn:oid:2.49.0.1.840.0.44ee52907362ccf0ccaec1846fd8a1d27721d663.001.1","noaa_urn:oid:2.49.0.1.840.0.44ee52907362ccf0ccaec1846fd8a1d27721d663.004.1","noaa_urn:oid:2.49.0.1.840.0.44ee52907362ccf0ccaec1846fd8a1d27721d663.005.1","noaa_urn:oid:2.49.0.1.840.0.44ee52907362ccf0ccaec1846fd8a1d27721d663.002.1","noaa_urn:oid:2.49.0.1.840.0.44ee52907362ccf0ccaec1846fd8a1d27721d663.003.1","noaa_urn:oid:2.49.0.1.840.0.ca81da7ee8153f85b29c80d374c633ba3721d376.001.1","noaa_urn:oid:2.49.0.1.840.0.6e3634505a0bbf36cc4a3b66c3e168ef948c513a.001.1","noaa_urn:oid:2.49.0.1.840.0.b590aebee4bd5036e0579e45a74c3ef453e97c00.001.1"]

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 10 February 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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Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.