Flood Watch

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

* WHERE...Tohono O'odham Nation.

* WHEN...Through Monday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Low-water crossings may be flooded. Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS... - Scattered thunderstorms will be developing again this afternoon into this evening. Rainfall rates in excess of 1 inch per hour are expected with the stronger storms with isolated areas having the potential of 1-3 inches. Additional rainfall from the previous day activity will result in faster responses in normally dry washes, creeks and roadway dips. The watch was extended into Monday evening as scattered thunderstorms will also have the potential for 1-3 inches Monday afternoon and evening.

- Http://www.weather.gov/safety/flood