Flash Flood Watch now includes Chemung, Bradford, Tioga (NY)  and Tioga (PA) counties until Midnight tonight. As a slow moving storm system over western Pennsylvania pulls tropical moisture into the area, showers and thunderstorms will be triggered. Some may contain heavy rain, combined with already saturated conditions may cause flash flooding of small streams or creeks this afternoon and evening. 

Water may have the ability to overflow ditches or culverts and pond water on road or walkways. A Flash Flood watch means that conditions are favorable for flash flooding to develop.