Flood threat increasing overnight as heavy, tropical rain arrives
FLASH FLOOD WATCHES remain active through Thursday morning for much of the WDBJ7 viewing area. As the remnants of Bertha move in during the evening and linger overnight leading to rain which could come down heavy at times leading to flooding.
UPDATE: Rain is overspreading the region and pockets of heavier rain is moving up from western North Carolina. We'll begin to experiance the heaviest rain from 8pm until just after midnight. Most of the rain shoule be exiting before sunrise, with lingering showers into Thursday.
1" to 2" of rain is possible with locally higher amounts up to 5" along the mountains into Thursday morning. This will move over the same areas hit hard by last week's flooding.
In addition, 20-30 MPH wind gusts during this time will bring down trees resulting in scattered power outages and blocked roads.
THURSDAY - FRIDAY
The steadier rain ends early Thursday, and we'll get a brief break before showers and storms develop once again Thursday afternoon. Storms fall apart during the evening. Expect showers and thunderstorms to increase in coverage on Friday as deeper moisture enters ahead of an approaching cold front. This will bring numerous downpours and even the threat of a few stronger storms with damaging wind and hail. Storms weaken after sunset.
We finally see some movement in the stalled pattern by the weekend as a cold front approaches,, but this will only enhance the rain over the area, leading to additional flooding problems into the weekend.
Rainfall models suggest another 1-3+" over already soggy ground for WED-SAT. This could lead to additional flooding concerns, both with flash flooding and river flooding.
Fortunately, most of the long-range models have the front clearing the area, leading to a drier day Sunday with increasing sunshine.
MONDAY & TUESDAY
It looks like we'll see a mix of sun and clouds with highs in the upper 70s.