Time: 1145 AM Tue April 27, 2021 Forecaster: Brad Simmons

MESSAGE 1
Flash Flood Prediction Program

STREET FLOODING POTENTIAL


We have determined that street and small stream flooding is possible in the following counties: Douglas, Adams, Denver, Arapahoe
including: DIA, the City of Aurora
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from: Current to 800 PM.
Prime time for flooding: Current to 600 PM.
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Forecast rainfall: Weak/moderate and briefly thunderstorms will have the potential to produce 0.3-0.9" of rain in 10-30 minutes.
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The most likely areas to be impacted by flooding are:

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: Steady moderate to heavy rain may produce 0.4-1.2" in 45-75 minutes. Stronger thunderstorms will produce more hail than rainfall and may produce accumulating hail. Creeks and streams will be n the rise as precipitation overage expands this afternoon and evening.

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.