A ridge of high pressure will prevail through Wednesday over the Southwest, bringing warmer than normal conditions, although periods of high clouds will continue to stream across the area. Winds will be light as well.
Beginning on Thursday, the ridge will flatten out and a series of back-to-back lows/troughs will move across Arizona, bringing with them partly to mostly cloudy skies, cooler temperatures, periods of breezy weather, and a chance of rain showers each day. The first trough will be Thursday night to Friday, then a weak disturbance on Friday night to Saturday, then another stronger trough on Saturday night to Sunday, then another trough Sunday night to Monday or Tuesday. There is still considerable uncertainty in the forecasts after Friday, but be assured that Thursday through early next week will see a period of unsettled, wet weather. Total rainfall accumulation between Thursday and Monday will likely be between 1” and 2”.
Met Mail is an unofficial weather discussion and forecast transmitted once or twice a week via e-mail by the Embry-Riddle Department of Meteorology (http://meteo.pr.erau.edu/). Embry-Riddle offers an undergraduate bachelor-of-science degree program in Applied Meteorology. Please spread the word to all potential qualified candidates!
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Official National Weather Service forecast