* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...A portion of south central Arizona, including the following county, Maricopa.

* WHEN...Until 1045 PM MST.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.

* ADDITIONAL DETAILS... - At 640 PM MST, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 3 inches of rain have fallen. - This includes the following streams and drainages... Sauceda Wash, Quilotosa Wash, Kaka Wash, Sand Tank Wash, Vekol Wash and Kohatk Wash. - Some locations that will experience flooding include... Kaka. - http://www.weather.gov/safety/flood

At 614 PM MST, radar indicated strong thunderstorms were located south of Phoenix. Movement was northeast at 15 mph. Conditions are becoming more favorable for the development of additional thunderstorms across South-Central Arizona. Some storms may become strong to severe. Winds in excess of 40 mph and pea size hail will be possible. Strong, gusty winds will be capable of producing areas of blowing dust with reduced visibilities. Locations impacted include... Phoenix, Mesa, Chandler, Glendale, Scottsdale, Gilbert, Tempe, Peoria, Surprise, Avondale, Goodyear, Buckeye, Casa Grande, Apache Junction, El Mirage, Florence, Fountain Hills, Paradise Valley, Coolidge, and Tolleson. Torrential rainfall is also occurring with these storms, and may cause localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. These storms may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.