Active AlertsBuffalo, NY

What: Flash flooding caused by excessive rainfall continues to be possible.
Where: Portions of central and western New York, including the following counties, in central New York, Jefferson, Lewis, Northern Cayuga and Oswego. In western New York, Allegany, Cattaraugus, Chautauqua, Genesee, Livingston, Monroe, Niagara, Northern Erie, Ontario, Orleans, Southern Erie, Wayne and Wyoming.
When: Through late tonight.
Impacts: Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas.
Additional Details: - Additional heavy showers and thunderstorms are expected through tonight. Locally heavy rainfall is possible with rainfall rates near, or exceeding 2 inches per hour at times. Repeated rounds of heavy rain over any given location could result in flash flooding. - Http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.