Calamity
mediumSevere weatherCalamity Score: 22

Severe weather in United States

ShannonUnited StatesNOAA

This alert expired on 8 August 2026 at 08:45 UTC. It is kept here as a record.

No stronger detection stands among the 8 recorded within 20 km of this point since 10 July 2026 — 5 others scored the same. 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 August 7 at 11:38PM CDT until August 8 at 3:45AM CDT by NWS Paducah KY

Nearby, since 10 July 2026

How we know

Confirmed by 4 independent sources, including NOAA.

Our own score for this event is 22 out of 100, at 71 % 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)22 / 100
Our confidence71%
Coordinates36.9753, -91.4203
Nearest CityPoplar Bluff (95 km)
Impact Tierminor
Timestamp2026-08-08T04:38:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.d565fc354b6e956b3f51fb7c4574a417

Score Breakdown

35
intensity
0
population
0
cascading
80
historical

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescCarter, MO; Howell, MO; Oregon, MO and 1 more areas
HeadlineFlash Flood Warning issued August 7 at 11:38PM CDT until August 8 at 3:45AM CDT by NWS Paducah KY
Expires2026-08-08T03:45:00-05:00
SenderNameNWS Paducah KY
HasExactCoordstrue
MergedCount4
MergedIds["noaa_urn:oid:2.49.0.1.840.0.d565fc354b6e956b3f51fb7c4574a41748f38130.001.1","noaa_urn:oid:2.49.0.1.840.0.783dd0a52e31223cd178a44af053d4e5281f542e.001.1","noaa_urn:oid:2.49.0.1.840.0.f77af2167ca4353b9ff7b24f6f249fd7a3ebf5ed.001.1","noaa_urn:oid:2.49.0.1.840.0.ea3ca7cdf8666e601560a7bc503be81f89881939.001.1"]
Iem TypeSummaryF
Iem CityMountain View
Iem CountyHowell
Iem StateMO
Iem WfoSGF
Iem RemarkHighway 17 is closed due to flooding at Jam Up Creek.
MergedSources[{"id":"iem_H_37.130_-91.270_1786150800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786150800000,"latitude":37.13,"longitude":-91.27},{"id":"iem_D_37.360_-91.420_1786146780000","source":"iem","severity":"low","severityValue":25,"timestamp":1786146780000,"latitude":37.36,"longitude":-91.42},{"id":"iem_F_36.990_-91.700_1786162200000","source":"iem","severity":"low","severityValue":25,"timestamp":1786162200000,"latitude":36.99,"longitude":-91.7}]

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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.