Phoenix weather: Heat wave has firm grip on Valley

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by Kim Quintero

Bio | Email | Follow: @kimquintero

azfamily.com

Posted on August 20, 2013 at 7:01 AM

Updated Wednesday, Oct 30 at 8:15 AM

PHOENIX -- Excessive Heat Warnings are in effect Tuesday starting at 10 a.m. for portions of Maricopa County, including the Greater Phoenix Area, as well as parts of Pinal County through 8 p.m. Wednesday.

Temperatures are expected to range from 110 to 115 across the warning area. Those who have to work outside should exercise extra precautions by drinking plenty of water, wearing lightweight and lose-fitting clothing, and taking numerous breaks in the shade or an air-conditioned building.

Know the signs and symptoms of heat-related illnesses. Those most susceptible to the effects of these high temperatures are the elderly and young children.

A ridge of high pressure over the Four Corners region is the culprit behind the heat wave. A weak southerly flow of monsoon moisture continues to pump into Arizona, but it’s not enough to bring any relief for the time being.

Storm activity this afternoon should across northern Arizona. There is a small chance that outflow boundaries could produce stray storms in the Valley that may kick up gusty winds in excess of 40 mph. That means there's the potential for dust. That threat will continue each afternoon and evening through the rest of the week.

Look for a high today in Phoenix of 111. Tonight, the low temperature should dip to around 88.

Rain and cooler temperatures could make an appearance across the Valley this weekend as monsoon moisture deepens across the state. We also have a potential tropical cyclone developing near Baja California. This would add to a widespread rain event. We’ll be tracking the situation in the coming days.

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