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Why May weather has been so unusual in the Valley

Reported by: Bill Bellis
Email: bbellis@abc15.com
Last Update: 5/22 11:17 am
Jeannette Brighton sent in this picture of rain in Anthem on Thursday, May 21, 2009. (Jeannette Brighton )
Jeannette Brighton sent in this picture of rain in Anthem on Thursday, May 21, 2009. (Jeannette Brighton )
I think it's safe to say that we have seen just about everything for May of 2009.

We just ended a record breaking streak of 14 consecutive days of 100 degrees or higher on Tuesday. During that time frame, our average high temperature was 103 with an average low of 77.

Our normal high and low temperatures for that time frame (May 6th-May19th) is 93 and 75. So as you can see, most of May of 2009 has been much warmer than our 30-year averages.

Then all of a sudden, Mother Nature threw us a curve ball. An area of low pressure off the Baja of California developed over this past weekend and began scooping up moisture from Mexico and bringing it into Arizona.

A thunderstorm developed this past Sunday and moved into the east Valley bringing brief rain and areas of blowing dust.

Monday night, thunderstorms developed right over the far southern portion of the Valley and brought winds in excess of 65 mph and caused extensive damage including power lines on top of cars and even power outages across the Valley. Only a few raindrops fell. Enough to dirty up the cars.

A few storms developed Tuesday afternoon south of the Valley, but brought areas of dust to Sun Lakes and Ahwatukee followed by a few drops of rain.

Wednesday was one of our quieter days with most of the storms staying either to our south or up in the high country.

Then there was Thursday. Strong storms developed in Yavapai county and rolled south into the Valley bringing the northern part of the Valley 40 mph winds followed by rainfall amounts between 0.25 inches -0.40 inches. Almost unheard of for this time of year, but we'll take every drop of rain.

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