Big changes are on the way as monsoon moisture increases across Arizona.
At the same time, a storm system will approach from the west and tap into lingering moisture from the remnants of what was once Tropical Storm Mario.
All of these factors combined could lead to severe storms across parts of Arizona.
Here in the Valley, our best chances for rain and thunderstorms will be Thursday evening through Friday morning.
Any storms that develop could bring gusty winds, blowing dust, frequent cloud-to-ground lightning, and heavy downpours capable of causing localized flooding.
Temperatures will drop into the upper 90s Thursday and Friday, but it will feel muggy as all that moisture surges in…