3:03 p.m.
Time: 303 PM Thu September 14, 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 the following
counties: BOULDER (CITY OF BOULDER AFFECTED, FOUR MILE BURN AREA NOT
AFFECTED), JEFFERSON
including: ARVADA
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from: Current
to 500 PM
.
Prime time for flooding: Current
to 430 PM
.
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Forecast rainfall: Strong thunderstorms will produce rainfall rates of
0.50-1.00” of rain in 10-30 minutes. A slow moving large
thunderstorm or training of strong thunderstorm cells may result in up
to 2.00" of rain 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
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Additional Information: Excessive runoff is imminent or already
occurring in Boulder County, Jefferson County, and Arvada. Strong
thunderstorms may also contain gusty winds, and frequent
cloud-to-ground lightning.
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]
