SPC MD 2399

MD 2399 CONCERNING TORNADO WATCH 693... FOR PARTS OF EAST-CENTRAL AND NORTHEAST ARIZONA INTO FAR WEST-CENTRAL NEW MEXICO Mesoscale Discussion 2399 NWS Storm Prediction Center Norman OK 0155 PM CDT Thu Oct 22 2026 Areas affected...Parts of east-central and northeast Arizona into far west-central New Mexico Concerning...Tornado Watch 693... Valid 221855Z - 222030Z The severe weather threat for Tornado Watch 693 continues. SUMMARY...The severe risk is expected to increase across parts of east-central and northeast Arizona into far west-central New Mexico during the next few hours. Large hail, severe wind gusts, and a couple of tornadoes will all be possible. DISCUSSION...A north/south-oriented broken band of thunderstorms continues within a confluence zone extending across north-central AZ, with transient organization/embedded rotation. Over the next few hours, this activity, along with additional thunderstorms developing along the higher terrain, will spread northeastward into east-central/northeast AZ into far west-central NM. Here, cloud breaks are supporting diurnal heating/boundary-layer destabilization amid middle/upper 50s dewpoints. Around 70 kt of effective shear (sampled ...