PHOENIX -- Red Flag Warnings are in effect across all of Arizona Tuesday.
Wind gusts are expected to peak during the afternoon at speeds of up to 55 mph in Northern Arizona and 40 mph in the Valley. Relative humidity will be between 7 and 20 percent across the state. Already dry fuels in place could create an explosive fire from even the smallest spark.
Periods of blowing dust are also possible.
There may be enough moisture and instability that breaks through southeastern Arizona Tuesday afternoon to produce isolated storms.
The driving force behind these winds is an upper level low tracking out of the Pacific northwest. Southwesterly flow will create windy to breezy conditions through Wednesday. A less hot air mass will also filter into the state Wednesday, keeping daytime highs five more degrees cooler than normal for this time of the year.
By the end of the week and into the weekend, high pressure will reestablish itself across the desert southwest and a warming trend will kick off.