10:55 p.m.
Time: 1055 PM Sun August 24, 2025
Forecaster: Justin Brooks
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MESSAGE 1 UPDATE
Flash Flood Prediction Program
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STREET FLOODING POTENTIAL
We previously determined that street and small stream flooding is
possible in the following counties: BOULDER (CITY OF BOULDER
AFFECTED), JEFFERSON, BROOMFIELD, DOUGLAS, ADAMS, DENVER, ARAPAHOE
including: DIA, THE CITY OF AURORA, ARVADA, WHEAT RIDGE, LAKEWOOD
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from: Current
to 300 AM
.
Prime time for flooding: Current
to 230 AM
.
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Forecast rainfall: Typical showers and thunderstorms will produce
0.10”-0.40” total in 10-30 minutes. A moderate to strong
thunderstorm will produce 0.40”-0.80” total in 10-30 minutes.
An anchored moderate thunderstorm, or training of moderate to strong
thunderstorms will have the potential to produce 1.60” in under 60
minutes.
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The most likely areas to be impacted by flooding are:
X
Mountain streams & floodplains; road crossings; canyon roads &
highways; recreational trails; adjacent open space
areas/campgrounds/parks; fishing access points & stream reaches;
buildings near streams; utilities
X
Urban streams/gulches; road crossings; recreational trails; adjacent
open space areas/campgrounds/parks; floodplain properties; utilities
X
Urban streets, intersections, low lying areas, known trouble spots
X
Mountain locations subject to mud/rock/debris slide
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Additional Information: Strong thunderstorms may also contain hail,
gusty winds, and frequent cloud-to-ground lightning. Excessive runoff
and flooding of small streams and low-lying areas may occur.
This message is not intended for public dissemination. Please pass
this information along to affected emergency response organizations
(police, fire, public works, etc.) within your area.
Also, please take appropriate actions to prepare for possible
flooding.
Further information will be provided to you as it becomes available.
MHFD Flood Prediction Center: 303-458-0789 F2P2 Website
[http://udfcd.org/Flash+Flood+Prediction+Program]
