Arizona weather upate: High temperatures and thunderstorm activity to intensify by weekend

Phoenix, Arixona: Sufficient moisture will remain in place through the next several days supporting daily thunderstorm chances, mainly over the higher terrain areas. By the end of this week and through the weekend, storm chances will increase across the lower deserts as  moisture increases. 

Temperatures will continue to remain above normal yielding widespread moderate HeatRisk, with areas of major  HeatRisk potentially developing during the Friday-Saturday time frame. 

During the next couple of days the high will slowly migrate westward into Arizona. Despite this, sufficient moisture will still be in place to result in daily thunderstorm activity across the AZ high terrain. Across the lower elevations, thunderstorm activity through the middle of the week  will be hard to come by, any storms that descend into the lower deserts  from the higher terrain will likely weaken.

Historically, northeasterly flow events have led to severe weather materializing across the Phoenix area so this is something that bears watching as we get closer to the weekend.

High temperatures through Thursday will range between 108-113F across the lower deserts but then could get closer to 115F across many areas during the Friday-Saturday time frame. Widespread moderate HeatRisk is expected through Thursday, however by Friday and Saturday as temperatures warm closer to 115F, areas of major HeatRisk look to materialize. The good news is that a slight cooling trend is likely starting on Sunday.