Cooling trend ahead as disturbances march into Arizona

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by Kim Quintero

Bio | Email | Follow: @kimquintero

azfamily.com

Posted on November 2, 2013 at 5:24 PM

Updated Monday, Nov 4 at 6:39 AM

PHOENIX -- Temperatures are expected to take a tumble while rain chances return to the picture, thanks to a couple of weather-makers headed for Arizona over the next 48 hours.

The first system is a weak area of low pressure that was seen off the coast of California Saturday morning. This disturbance is expected to ride into the state overnight into early Sunday morning. While the atmosphere is pretty dry, there is a slight chance of sprinkles in the Valley, but the best chance of light precipitation will be in southeastern Arizona between midnight and 4 a.m. Sunday.

This low will also increase clouds overnight, thus morning low temperatures should be slightly warmer. Phoenix should dip down to a low of 58 under partly cloudy skies.

On the heels of Saturday’s warm 90-degree day in Phoenix, Sunday should see a high of only 82.

On Monday, another stronger system dives southeastward from the Pacific Northwest. This will drop the Valley’s daytime highs in the upper 70s, create gusty winds and kick Valley rain chances up to around 20 or 30 percent. Models indicate the system is pretty moisture-starved, so any precipitation that does develop should be pretty light. The high country may see a light rain snow mix, but it’s not expected to be a big issue. Monday night’s snow level should range from 6500 to 7500 feet.

As the system’s cold front swings out of Arizona, a cooler and dry northwesterly flow will pump into the state. Tuesday morning’s low temperatures in the Valley are expected to dip into the 40s, with afternoon highs in the low 70s. 

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