Cloudy start to hump day won't keep heat awayPosted: Updated:
PHOENIX -- Desert-dwellers are bracing for another round of scorching temperatures after Mother Nature teased the heat-weary with cloudy skies and sprinkles across the Valley Wednesday morning.
The cloud cover acted as a blanket, allowing low temperatures to dip only in the upper 80s and low 90s.
By lunch time, Phoenix is expected to hit a temperature of 102, with an afternoon high of 109.
An Air Quality Alert for Ozone is in effect in Marciopa County. Those with respiratory issues should limit outdoor activity.
Monsoon activity is expected to be pretty average heading into the afternoon hours. Isolated storms will develop mainly across the higher elevations as a ridge of high pressure continues to pump light moisture into the state from the south. Any storms that develop could produce gusty winds, lightning and blowing dust in the Valley through the evening.
Temperatures begin to drop off Thursday as an area of low pressure moves onshore the California coast and our ridge of high pressure pushes east. This will allow more monsoon moisture to pump in to the state from the southeast. By Saturday afternoon, high temperatures in the Valley are expected to reach only 100 degrees. The mid 90s are in the forecast for Sunday and Monday.
It looks like we could have a decent rain event for most of Arizona, including the Valley, through the weekend and into the start of the next work week. Along with deeper monsoon moisture moving into the state, models continue to indicate a tropical cyclone forming near Baja California. This would add more fuel for storms to work with.