A Flash Flood Watch is in effect Monday through noon Tuesday for Floyd and surrounding counties in the New River Valley, Roanoke Valley and much of Southwestern Virginia.

Advised The National Weather Service office in Blacksburg:

…FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING… THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF NORTHWEST NORTH CAROLINA, VIRGINIA, AND SOUTHEAST WEST VIRGINIA, INCLUDING THE FOLLOWING AREAS, IN NORTHWEST NORTH CAROLINA, ALLEGHANY NC, ASHE, AND WATAUGA. IN VIRGINIA, ALLEGHANY VA, BATH, BLAND, BOTETOURT, CARROLL, CRAIG, FLOYD, GILES, GRAYSON, MONTGOMERY, PULASKI, ROANOKE, ROCKBRIDGE, SMYTH, TAZEWELL, AND WYTHE. IN SOUTHEAST WEST VIRGINIA, EASTERN GREENBRIER, MERCER, MONROE, SUMMERS, AND WESTERN GREENBRIER. * THROUGH THIS EVENING. * SEVERAL ROUNDS OF THUNDERSTORMS ARE LIKELY, WITH POTENTIAL FOR EXCESSIVE RAINFALL. WEATHER CONDITIONS ARE FAVORABLE FOR PRECIPITATION RATES OF UP TO 4 INCHES PER HOUR. * IF ACTUAL RAINFALL EXCEEDS 2 INCHES IN AN HOUR, FLASH FLOODING WILL BECOME POSSIBLE. THE GREATEST IMPACTS WILL BE IN POOR DRAINAGE AND URBAN AREAS. SMALL STREAMS WITHIN MOUNTAINOUS TERRAIN ARE ALSO SUSCEPTIBLE TO RAPID RUNOFF, AND WILL RESPOND VERY QUICKLY WHEN HIGH RAIN RATES OCCUR, PROVIDING LITTLE OPPORTUNITY FOR WARNING. PRECAUTIONARY/PREPAREDNESS ACTIONS… A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. REMEMBER…TURN AROUND…DON’T DROWN! YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. &&