Southern Tier residents are being advised to prepare for the possibility of additional flash flooding.

The National Weather Service issued a Flash Flood Watch for Broome, Chenango, Cortland, Delaware and Otsego counties for Monday. The watch was scheduled to be in effect from 1 to 10 p.m.

Some localized flash flooding could occur outside the watch area.

Forecasters say strong to severe thunderstorms with heavy rain are expected Monday and Monday night.

Flash flooding is possible, especially in areas that have received significant rainfall in recent days.

Some thunderstorms may become severe and produce damaging winds and large hail.

There may be flooding in poor drainage and urbanized areas. There also is the potential for more serious flash flooding of small streams, creeks, culverts and roadways which may be clogged with debris from recent flooding.

Very heavy rain made many roads and underpasses in Broome County impassible on Friday evening.

Sections of the village of Endicott, including portions of Washington Avenue and Watson Boulevard, were affected by flooding. Fast-rising water caused damage to parts of Watson Boulevard near Oak Hill Avenue.

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