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Home Return to list Areal Flood Advisory 0115 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-08-15 14:26:54
432
WGUS85 KBOU 151926
FLSBOU
Flood Advisory
National Weather Service Denver CO
126 PM MDT Sat Aug 15 2026
COC005-031-035-059-152130-
/O.NEW.KBOU.FA.Y.0115.260815T1926Z-260815T2130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Arapahoe CO-Denver CO-Douglas CO-Jefferson CO-
126 PM MDT Sat Aug 15 2026
...FLOOD ADVISORY IN EFFECT UNTIL 330 PM MDT THIS AFTERNOON...
* WHAT...Urban area and small stream flooding caused by excessive
rainfall is expected.
* WHERE...East Central Jefferson County in central Colorado...
Southwestern Arapahoe County in northeastern Colorado...
Extreme Southwestern Denver County in northeastern Colorado...
Northwestern Douglas County in northeastern Colorado...
* WHEN...Until 330 PM MDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways.
* ADDITIONAL DETAILS...
- At 125 PM MDT, Doppler radar and automated rain gauges
indicated heavy rain due to thunderstorms. This may cause urban
and small stream flooding. Up to 0.5 inches of rain have fallen.
- Additional rainfall amounts of 0.5 to 1 inch are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Southern Lakewood, southwestern Centennial, Highlands Ranch,
Littleton, southern Englewood, Greenwood Village, Sheridan,
Morrison, Chatfield Reservoir, Red Rocks Park, Cherry Hills
Village, Columbine and Ken Caryl.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be aware of your surroundings and do not drive on flooded roads.
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 3968 10524 3963 10489 3951 10492 3953 10521
3957 10521
$$
20
Action: Continued Issued At: 2026-08-15 15:37:26
421
WGUS85 KBOU 152037
FLSBOU
Flood Advisory
National Weather Service Denver CO
237 PM MDT Sat Aug 15 2026
COC005-031-035-059-152130-
/O.CON.KBOU.FA.Y.0115.000000T0000Z-260815T2130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Arapahoe CO-Denver CO-Douglas CO-Jefferson CO-
237 PM MDT Sat Aug 15 2026
...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 330 PM MDT THIS
AFTERNOON...
* WHAT...Urban area and small stream flooding caused by excessive
rainfall continues.
* WHERE...East Central Jefferson County in central Colorado...
Southwestern Arapahoe County in northeastern Colorado...
Southwestern Denver County in northeastern Colorado...
Northwestern Douglas County in northeastern Colorado...
* WHEN...Until 330 PM MDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways.
* ADDITIONAL DETAILS...
- At 235 PM MDT, Doppler radar and automated rain gauges
indicated heavy rain had ended. Earlier rainfall may cause urban
and small stream flooding. Between 0.8 and 1.4 inches of rain
have fallen.
- Additional rainfall amounts up to 0.2 inches are expected over
the area. Minor flooding is expected.
- Some locations that will experience flooding include...
Southern Lakewood, southwestern Centennial, Highlands Ranch,
Littleton, southern Englewood, Greenwood Village, Sheridan,
Morrison, Chatfield Reservoir, Red Rocks Park, Cherry Hills
Village, Columbine and Ken Caryl.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be aware of your surroundings and do not drive on flooded roads.
Excessive runoff from heavy rainfall will cause minor flooding of
small creeks and streams, highways, streets, underpasses, drainage
areas and other low lying spots.
&&
LAT...LON 3968 10524 3963 10489 3951 10492 3953 10521
3957 10521
$$
20
Action: Expired Issued At: 2026-08-15 16:23:58
783
WGUS85 KBOU 152123
FLSBOU
Flood Advisory
National Weather Service Denver CO
323 PM MDT Sat Aug 15 2026
COC005-031-035-059-152133-
/O.EXP.KBOU.FA.Y.0115.000000T0000Z-260815T2130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Arapahoe CO-Denver CO-Douglas CO-Jefferson CO-
323 PM MDT Sat Aug 15 2026
...FLOOD ADVISORY WILL EXPIRE AT 330 PM MDT THIS AFTERNOON...
The Flood Advisory will expire at 330 PM MDT this afternoon for a
portion of northeast Colorado, including the following areas, extreme
western Arapahoe County, extreme southwestern Denver County,
northwest Douglas County, and east central Jefferson County.
Flood waters have receded. The heavy rain has ended. Urban area and
small stream flooding is no longer expected to pose a threat. Please
continue to heed any remaining closures.
A Flood Watch remains in effect until 1000 PM MDT Saturday for
portions of central, east central, north central, and northeast
Colorado...
&&
LAT...LON 3968 10524 3963 10489 3951 10492 3953 10521
3957 10521
$$
20
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