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Why are floods possible with this weekend’s system?

Flooding was not a major concern in the past four months

ROANOKE, Va. – Much of our discussion in regards to rain in the past few months has been how desperately we need it. Accumulations were below average for the past four months, and while we got more than seven inches of rain in that time that still leaves us well below average for that same stretch.

While we have had some very rainy days in the last few months we are still missing more than six inches of rain

With that lack of rain you might not think flooding would be much of an issue with our next big rain coming. The biggest difference is that we had significant rainfall not too long ago. Rain from last Sunday totaled more than an inch in Roanoke, and much of that rain sunk into the ground leaving less room for new rain to join it.

Sunday's rain put much more water in the ground than we had before that point

This Sunday brings even higher rain totals for most which increases our flood risk through the day. The main risk is east of I-81, but most of our region and really most of the Mid-Atlantic could get localized flooding as this system moves north along the coast.

Sunday's rain stacks on rain from last weekend to increase the flood risk through the Mid-Atlantic

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