 The Arizona Community Tree Council presents Arborist Basics on Friday, July 12th in Yuma and Friday, July 19th in Somerton. This workshop offers an opportunity to deepen your knowledge about being an arborist and the basics of tree care, including pruning, soils, water, and insects. Information and registration at aztrees.org. No change in our weather on this Independence Day. Sunny, hot, and breezy. And an excessive heat warning will continue through the weekend in southwest Arizona.