Shower and storm chances ramping up for the weekend

PHOENIX - After another active night in the Valley, there's a slight showers and thunderstorms through the overnight hours. Any storms will be capable of heavy rain, strong winds, lightning and patchy blowing dust.

Monsoon moisture will continue to increase and a disturbance is set to move across the state, enhancing our storm chances through the day Saturday and lingering through Sunday.

We'll wake up under mostly cloudy skies with a 20% chance of morning rain in the Valley and southeast Arizona. Rain and storm chances begin to ramp up late morning into the afternoon hours. Coverage will be near 40% and lasting into the evening.

The biggest threat over the weekend will be heavy downpours creating the potential for flash flooding. There's a Flash Flood Watch already in place across northwest Arizona Saturday evening through Sunday evening.

Sunday chances will stay near 30%. We will also be looking for below-average afternoon highs in the mid to upper 90s across the Valley.

Stay alert and stay tuned to ABC15 and abc15.com for continuous updates.

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Rainfall totals:

2014 Sky Harbor Official Rainfall: 1.05" (-3.26" from average)

2014 Valley Average (Phoenix Rainfall Index): 1.30" (-2.22" from average)

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Daily rainfall reports from all across the Valley can be found here .

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See the full 7-Day forecast

Interactive Arizona Radar

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