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Home Return to list Areal Flood Advisory 0159 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-09-22 19:40:37
832
WGUS85 KBOU 230040
FLSBOU
Flood Advisory
National Weather Service Denver CO
640 PM MDT Tue Sep 22 2026
COC005-035-059-230345-
/O.NEW.KBOU.FA.Y.0159.260923T0040Z-260923T0345Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Arapahoe CO-Douglas CO-Jefferson CO-
640 PM MDT Tue Sep 22 2026
...FLOOD ADVISORY IN EFFECT UNTIL 945 PM MDT THIS EVENING...
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...South Central Jefferson County in central Colorado...
South Central Arapahoe County in northeastern Colorado...
Central Douglas County in northeastern Colorado...
* WHEN...Until 945 PM MDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Rises in small streams and normally dry creeks. Water over some
roadways.
* ADDITIONAL DETAILS...
- At 639 PM MDT, Doppler radar and automated rain gauges
indicated heavy rain due to thunderstorms. Minor flooding is
ongoing or expected to begin shortly in the advisory area.
Between 0.5 and 1.5 inches of rain have fallen.
- Some locations that will experience flooding include...
Castle Rock, Parker, Lone Tree, Roxborough Park, Sedalia,
Louviers, Castle Pines, Sprucewood, Devils Head, The Pinery,
Deckers, Cheesman Reservoir and Shamballa.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause minor flooding of
small creeks and streams, highways, streets, underpasses, drainage
areas and other low lying spots.
&&
LAT...LON 3920 10528 3928 10526 3938 10517 3960 10481
3946 10466 3922 10511 3917 10529
$$
09
Action: Cancelled Issued At: 2026-09-22 21:49:13
925
WGUS85 KBOU 230248
FLSBOU
Flood Advisory
National Weather Service Denver CO
848 PM MDT Tue Sep 22 2026
COC005-035-059-230258-
/O.CAN.KBOU.FA.Y.0159.000000T0000Z-260923T0345Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Arapahoe CO-Douglas CO-Jefferson CO-
848 PM MDT Tue Sep 22 2026
...FLOOD ADVISORY IS CANCELLED...
The Flood Advisory is cancelled for a portion of northeast Colorado,
including the following areas, Arapahoe, Douglas and Jefferson.
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining closures.
&&
LAT...LON 3920 10528 3928 10526 3938 10517 3960 10481
3946 10466 3922 10511 3917 10529
$$
09
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