Flood Watch

* WHAT...Flash flooding caused by excessive rainfall continues to be possible.

* WHERE...Portions of northwest and western Pennsylvania, including the following counties, in northwest Pennsylvania, Forest and Venango. In western Pennsylvania, Butler.

* WHEN...Until midnight EDT tonight.

* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS... - Training thunderstorms with heavy rain rates are possible along a slow-moving cold front that advances southward through the area this evening. - http://www.weather.gov/safety/flood