AMARILLO, Texas (KVII) – A dynamic storm system is about to break away into the Desert Southwest and this will lead to an impactful period of precipitation for the High Plains starting Thursday and ending Friday. This vigorous upper-level low will soon become cutoff from the jet stream and linger over Arizona and New Mexico Thursday before moving ENE through the Texas/Oklahoma panhandles Friday. This will open the door for a 48-hour window where both rain and snow will be likely.