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NWS Topeka KSFL.W 0065October 1, 2026

Flood Warning: Lyon and Osage, KS

The National Weather Service office in Topeka issued a flood warning for Lyon and Osage in Kansas, which was in force until 1:00 a.m. local time on October 3. It was the 65th river flood warning the NWS office in Topeka issued in 2026. Kansas had 43 flood warnings in October 2026, against 14 in an average October of 2008-2025 (Kansas's flood warnings by year).

ExpiredWarning

Issued7:50 p.m. CDT, October 1, 2026
In force from11:37 p.m. CDT, October 1, 2026
Expired1:00 a.m. CDT, October 3, 2026

In force for 25.4 hours; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, Topeka KS
Area
Lyon and Osage
State
Kansas
Level
Warning
Issued
7:50 p.m. CDT, October 1, 2026
In force from
11:37 p.m. CDT, October 1, 2026
Expires
1:00 a.m. CDT, October 3, 2026
CAP severity, certainty, urgency
Severe, Likely, Expected
VTEC event
KTOP FL.W 0065
Official source
National Weather Service: the notice at its source

Flood Warnings in Kansas since 2008Every warning type in Kansas

Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.

The notice as issued

...The National Weather Service in Topeka has issued a Flood Warning for the following rivers in Kansas... Marais Des Cygnes River above Reading affecting Lyon and Osage Counties. * WHAT...Moderate flooding is forecast. * WHERE...Marais Des Cygnes River above Reading. * WHEN...From this evening to late Friday night. * IMPACTS...At 21.0 feet, County Road Y 5 near the gage floods, 3 miles north of Reading. At 23.0 feet, Overlow on the right bank is in several swift channels over Road Y 5, 3 miles north of Reading. * ADDITIONAL DETAILS... - At 7:45 PM CDT Thursday the stage was 10.9 feet. - Forecast...The river is expected to rise above flood stage late this evening to a crest of 22.2 feet tomorrow morning. It will then fall below flood stage early tomorrow afternoon. - Flood stage is 19.0 feet.

What the agency told people to do

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product along with additional weather and stream information is available at www.weather.gov/top/.

Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.

The record around this notice