Overview

• Weather Prediction Center discussions cite precipitable water anomalies of roughly +3 to +5 standard deviations tied to Priscilla’s remnants, supporting 0.5 to 1.5 inches per hour where storms train across Arizona, southern California, southern Nevada, Utah and New Mexico.
• WPC reported flash flooding as likely late Friday with locally significant impacts near the Las Vegas metro area, where training cells produced 0.5 to 0.75 inch per hour rainfall despite forward storm motion.
• On Saturday, the focus shifted to southeastern Arizona into western and central New Mexico with isolated flash flooding possible as scattered storms trained, producing 0.5 to 1.0 inch per hour and isolated totals near 2 inches.
• The Storm Prediction Center noted a lower-probability severe risk, highlighting potential for 55–70 mph gusts and 1.0–1.75 inch hail in parts of southern Nevada, southeastern California and southwestern Utah Friday, and marginal severe potential in southeast Arizona Saturday.
• WPC early Sunday flagged deep convection from Raymond’s remnants bringing a conditional flash-flood threat to the El Paso area as training cells may push rain rates above 0.5 inch per hour long enough to cause urban impacts.