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Flash-Flood Risk Lingers in Southwest as Supercells Target Kansas Overnight

Forecasters attribute the threats to tropical moisture with jet support that is fostering slow, training storms.

Overview

  • WPC reported isolated flash-flood potential across southern through northwestern Arizona, central and southern New Mexico, and far southern Nevada with 1 inch per hour rates, tapering after roughly 04Z.
  • SPC Severe Thunderstorm Watch 615 remained in effect Friday evening for central Kansas as supercells produced large hail and damaging winds, with threats up to 1.75 inches hail and 60 mph gusts.
  • WPC warned that warm-advection storms from south-central Kansas into adjacent north-central Oklahoma could train overnight, producing localized 2 to 3 inch totals and possible flash flooding.
  • WPC highlighted west-central Nevada for short-term training with rates up to 1 inch per hour and localized totals near 1.5 inches, raising a localized flash-flood concern.
  • By Saturday afternoon, SPC expected scattered strong storms over the eastern Texas and Oklahoma Panhandles into western Oklahoma with marginal hail or wind potential and no watch anticipated.