THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 79 IN EFFECT UNTIL 9 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN NEW YORK THIS WATCH INCLUDES 14 COUNTIES IN CENTRAL NEW YORK CAYUGA OSWEGO IN WESTERN NEW YORK ALLEGANY CATTARAUGUS CHAUTAUQUA ERIE GENESEE LIVINGSTON MONROE NIAGARA ONTARIO ORLEANS WAYNE WYOMING THIS INCLUDES THE CITIES OF AUBURN, BATAVIA, BUFFALO, CANANDAIGUA, FAIR HAVEN, GENESEO, JAMESTOWN, MEDINA, NEWARK, NIAGARA FALLS, OLEAN, OSWEGO, ROCHESTER, WARSAW, AND WELLSVILLE.

Heavy rain may fall on a deep primed snowpack leading to the melt increasing. Flows in rivers may increase quickly and reach critical levels. * WHAT...Flooding caused by heavy rain and snowmelt is possible. * WHERE...A portion of central New York, including the following counties, Jefferson, Lewis and Oswego. * WHEN...Through Wednesday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Multiple rounds of showers and embedded thunderstorms continue through tonight, which may result in an additional inch of rain. This rain combined with snowmelt from the higher elevations of the Tug Hill Plateau and Western Adirondacks may cause area waterways to reach or exceed bankfull stage, especially on the Black River and other rivers that drain the Tug Hill Plateau and western Adirondacks. - http://www.weather.gov/safety/flood