Alert archive / Kansas / River Flood Warnings in 2026

River Flood Warning 52, NWS Topeka, KS

September 16, 2026Lyon County, Osage County, Kansas

NWS Topeka, KS issued this river flood warning at Sep 16, 2026, 5:59 AM CDT for Lyon County, Osage County, Kansas. It took effect at Sep 16, 2026, 9:32 AM CDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Sep 16, 2026, 5:59 AM CDT (10:59 UTC)
In effect from
Sep 16, 2026, 9:32 AM CDT
Expired
Sep 16, 2026, 2:03 PM CDT
In force
5 hr
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Flood severity
Minor

Counties Lyon County, KS, Osage County, KS

The radar

The Topeka radar (KTWX), 55 km from the middle of the area, began a volume at 11:00 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Marais Des Cygnes River near Reading (RDNK1). The gauge peaked at 19.76 ft at Sep 16, 2026, 11:00 AM CDT.

actionminormoderate510152009/1609/17
Action stage
14 ft
Minor stage
19 ft
Moderate stage
21 ft
Major stage
45 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06910800, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 15, 8:47 PM CDTAreal Flood AdvisoryTOPLyon, Morris, Wabaunsee3 hr
Sep 15, 9:35 PM CDTSpecial Weather StatementTOPDouglas25 min
Sep 15, 9:46 PM CDTSpecial Weather StatementTOPFranklin29 min
Sep 15, 11:44 PM CDTAreal Flood AdvisoryTOPLyon, Morris, Wabaunsee3 hr
Sep 16, 12:30 AM CDTAreal Flood AdvisoryTOPBrown3 hr
Sep 16, 12:47 AM CDTAreal Flood AdvisoryTOPLyon, Osage, Wabaunsee3 hr

Nearby

River Flood Warnings in Kansas, 2026Every river flood warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.