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Home Return to list Areal Flood Advisory 0020 Issued by the St. Louis Forecast Office
Action: New Issued At: 2026-05-18 10:57:02
348
WGUS83 KLSX 181556
FLSLSX
Flood Advisory
National Weather Service St Louis MO
1056 AM CDT Mon May 18 2026
MOC071-073-181900-
/O.NEW.KLSX.FA.Y.0020.260518T1556Z-260518T1900Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Franklin MO-Gasconade MO-
1056 AM CDT Mon May 18 2026
...FLOOD ADVISORY IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON...
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Western Franklin County in east central Missouri...
Gasconade County in east central Missouri...
* WHEN...Until 200 PM CDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas. Some
low-water crossings may become impassable.
* ADDITIONAL DETAILS...
- At 1056 AM CDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 1 and 2 inches of rain have
fallen.
- Additional rainfall amounts of 1 to 2 inches are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Washington, Union, Owensville, New Haven, Gerald, Bland, Rosebud,
Drake, Beaufort, Leslie, Noser Mill, Japan, Lyon and Canaan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3844 9164 3865 9123 3862 9123 3861 9118
3860 9113 3861 9106 3857 9102 3852 9092
3821 9132 3821 9154 3815 9154 3815 9164
$$
Walsh
Action: Time Extended Issued At: 2026-05-18 12:31:19
966
WGUS83 KLSX 181730
FLSLSX
Flood Advisory
National Weather Service St Louis MO
1230 PM CDT Mon May 18 2026
MOC071-073-182100-
/O.EXT.KLSX.FA.Y.0020.000000T0000Z-260518T2100Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Franklin MO-Gasconade MO-
1230 PM CDT Mon May 18 2026
...FLOOD ADVISORY NOW IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...Western Franklin County in east central Missouri...
Gasconade County in east central Missouri...
* WHEN...Until 400 PM CDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas. Some
low-water crossings may become impassable.
* ADDITIONAL DETAILS...
- At 1230 PM CDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 2 and 3 inches of rain have
fallen.
- Additional rainfall amounts of 1 to 2 inches are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Washington, Union, Owensville, New Haven, Gerald, Bland, Rosebud,
Drake, Beaufort, Leslie, Noser Mill, Japan, Lyon and Canaan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3844 9164 3865 9123 3862 9123 3861 9118
3860 9113 3861 9106 3857 9102 3852 9092
3821 9132 3821 9154 3815 9154 3815 9164
$$
Walsh
Action: Time Extended Issued At: 2026-05-18 14:55:23
434
WGUS83 KLSX 181954 RRA
FLSLSX
Flood Advisory
National Weather Service St Louis MO
254 PM CDT Mon May 18 2026
MOC071-073-182200-
/O.EXT.KLSX.FA.Y.0020.000000T0000Z-260518T2200Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Franklin MO-Gasconade MO-
254 PM CDT Mon May 18 2026
...FLOOD ADVISORY NOW IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON...
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...Western Franklin County in east central Missouri...
Gasconade County in east central Missouri...
* WHEN...Until 500 PM CDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas. Some
low-water crossings may become impassable.
* ADDITIONAL DETAILS...
- At 254 PM CDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 2 and 3 inches of rain have
fallen.
- Additional rainfall amounts of 1 to 2 inches are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Washington, Union, Owensville, New Haven, Gerald, Bland, Rosebud,
Drake, Beaufort, Leslie, Noser Mill, Japan, Lyon and Canaan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3844 9164 3865 9123 3862 9123 3861 9118
3860 9113 3861 9106 3857 9102 3852 9092
3821 9132 3821 9154 3815 9154 3815 9164
$$
Walsh
Action: Cancelled Issued At: 2026-05-18 15:05:23
838
WGUS83 KLSX 182005
FLSLSX
Flood Advisory
National Weather Service St Louis MO
305 PM CDT Mon May 18 2026
MOC071-073-182015-
/O.CAN.KLSX.FA.Y.0020.000000T0000Z-260518T2200Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Franklin MO-Gasconade MO-
305 PM CDT Mon May 18 2026
...FLOOD ADVISORY HAS BEEN REPLACED WITH A FLASH FLOOD WARNING...
The Flood Advisory is replaced by a Flash Flood Warning for a portion
of east central Missouri, including the following areas, Franklin and
Gasconade.
The threat of flooding continues and a Flash Flood Warning is now in
effect. Please refer to that bulletin for more information.
&&
LAT...LON 3844 9164 3865 9123 3862 9123 3861 9118
3860 9113 3861 9106 3857 9102 3852 9092
3821 9132 3821 9154 3815 9154 3815 9164
$$
Walsh
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