Flash Flood Watch Friday and Saturday; Heavy rain likely for DC
A Flash Flood Watch has been issued for the entire DC Area from 2pm Friday through 2pm Saturday. Rainfall totals of 3 inches with locally higher amounts will be possible. This will cause flooding in small creeks and streams along with area roadways.
Timing the heaviest rain - DOWNLOAD THE STORMWATCH7 APP HERE
Heavy showers and storms are expected to develop in the afternoon hours. There is a slight risk for severe storms south and east of DC. At this time we think the area most likely for severe storms will be around Fredericksburg, VA to Southern Maryland and points south.
The heaviest rain looks most likely Friday evening from 7pm through Saturday morning around 7am. During that 12-hour time period, we advise you to please only travel if absolutely necessary. We say this since it will be very difficult to see flooded roadways in the dark and your safety is our number one concern. Another worry is that winds will accelerate during this time period, leading to the chance for downed trees and power lines, especially with saturated surfaces. Strongest gusts should be Saturday afternoon and evening as the area of low pressure deepens to the southeast of DC.
How much can we expect?
Computer models have been depicting some extremely high rainfall totals. Many forecast around 1 to 2 inches which the area can easily receive without much of a problem. However, on many of the solutions there are spots as high as 5, 6 or 7 inches which will lead to a number of flooding problems on roadways and low-lying areas. We are forecasting a general 2 to 3 inches with isolated higher amounts.
When will it end?
Rain should come to an end by Sunday morning. At this point, we expect a few clouds to hang around through part of Sunday but afternoon clearing with highs in the upper 70s. Looking ahead to next week, dry conditions appear like they will continue through Thursday before storm chances return by the end of the week.