Central Arizona MCS Loaded with 75+ MPH Gusts and Haboob Potential — SevereWX

Central Arizona MCS Loaded with 75+ MPH Gusts and Haboob Potential

A loosely organized Mesoscale Convective System (MCS) is drifting south-southwestward off higher terrain into central Arizona's blistering lowlands this evening. Surface temperatures soaring above 110°F combined with dewpoints in the 50s°F are fueling 1500-2000 J/kg of DCAPE—prime ingredients for powerful downbursts.

SPC's Mesoscale Discussion #1732 highlights the risk of multiple severe gusts exceeding 75 mph, with a most probable peak of 65-80 mph. The storms' cold pool interacting with the deeply mixed, hot boundary layer sets the stage for evaporative cooling to drive intense winds. One or more haboobs—dust storms riding outflow winds—could also erupt, slashing visibility and complicating travel.

This setup unfolds from now through around 10 PM MST (252345Z), primarily affecting portions of central Arizona. Watch issuance odds sit at 60%, signaling forecasters' confidence in the severe potential.

While not a widespread outbreak, the combo of extreme heat, microburst gusts, and haboob drama makes this a noteworthy evening threat for outdoor plans, power lines, and highways.

Stay prepared: Monitor local NWS updates, secure outdoor items, and have a plan for sudden wind and low-vis events. Check radar frequently if in the area.