Arizona MCS Sags into 110°F Hell for 75+ MPH Downbursts — SevereWX

An organized cluster of multicell thunderstorms is drifting south-southwestward off higher terrain into the blistering lowlands of central Arizona this evening. Surface temps soaring above 110°F combined with 50s dewpoints are fueling 1500-2000 J/kg DCAPE, setting the stage for potent evaporative cooling and embedded downbursts.

SPC's Mesoscale Discussion 1732 highlights the risk of multiple severe gusts, with some potentially exceeding 75 mph—most probable peaks at 65-80 mph. The loosely organized MCS's cold pool will interact with the deeply mixed boundary layer, amplifying wind potential. Adding intrigue, one or more haboobs could form, slashing visibility with massive dust walls.

Watch issuance odds sit at 60% within the valid period through 2345Z. Impacts may affect areas from roughly Phoenix northward toward Prescott, per the lat/lon box.

Stay prepared: Secure outdoor items, avoid travel during dust storms, and monitor local warnings from WFOs FGZ, PSR, and TWC. Have a severe weather plan ready—power outages and wind damage are real possibilities.