6:46 p.m.
Time: 646 PM Mon July 31, 2023
Forecaster: Justin Brooks
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MESSAGE 1
Flash Flood Prediction Program
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**** LOW IMPACT FLOODING ****
PRIORITY DISSEMINATION RECOMMENDED
We have determined that low impact flooding is likely in BOULDER
COUNTY (CITY OF BOULDER AFFECTED, FOUR MILE BURN AREA AFFECTED)
including:
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from: Current
to 900 PM
.
Prime time for flooding: Current
to 830 PM
.
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Forecast rainfall: Strong thunderstorms will produce rainfall rates of
0.80-2.00” in 10-30 minutes. A slower moving strong thunderstorm or
training of thunderstorm cells may result in up to 3.50" of rain in
45-75 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: Excessive runoff is imminent or already
occurring in Boulder County. Strong thunderstorms may also contain
hail, gusty winds and frequent cloud-toground lightning. Message 2's
remain valid until midnight.
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]
