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HEAVY_RAIN

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Safety and Preparedness

Heavy rainfall may lead to flooding if prolonged or if there is excessive runoff. Excessive runoff can be a result of saturated ground and/or rainfall intensity.

This Heavy rainfall assessment is meant to aid in the planning of activities which would be affected by significant rainfall.

Threat levels and suggested actions:

green light=no threat
Occasionally check forecasts for updates on thunderstorm potential.
yellow light=limited threat
Runoff is possible. Check gutters and drainage paths.
red light=elevated threat
Heavy rain and runoff likely. Check drainage paths and consider moving property out of areas that are easily flooded.
purple light=significant threat
Heavy rain and runoff is expected...may cause flooding. Move property out of low lying or poor drainage areas.
black light=critical threat
Heavy rain and critical runoff...likely to cause flooding. Move property out of low lying or poor drainage areas.
Flood Safety Links
Turn Around Don't Drown
Noaa Flood Information

Legend and Definitions


Level
24 Hr Rainfall
Affects
green light=no threat
< 0.5 inch Minimal or no runoff
yellow light=limited threat
0.5-1.5 in Limited runoff likely.
red light=elevated threat
1.5 - 2.5 in Elevated levels of runoff
purple light=significant threat
2.5 - 4.0 in Significant runoff
purple light=significant threat
> 4 inches Critical amounts of runoff

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