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Severe weather all hazards threat for today wed 10/21 and tomorrow thurs 10/22 and Friday 10/23 2026

Get your chasing hats on

Latest day 1:

ANOTHER ACTIVE AND RELATIVELY RARE SETUP FROM A CLIMATOLOGICAL
PERSPECTIVE CONTINUES REGIONALLY, AND WILL TEND TO SHIFT
EAST-NORTHEASTWARD THROUGH THE AFTERNOON AND EVENING. THIS WILL BE
AS THE UPPER LOW IN VICINITY OF THE SOCAL COAST CONTINUES TO BECOME
MORE NORTHEASTWARD PROGRESSIVE TODAY, REACHING PORTIONS OF THE GREAT
BASIN AND LOWER COLORADO RIVER VALLEY BY THIS EVENING. SCENARIO WILL CONTINUE TO FAVOR SUPERCELLS, PARTICULARLY FOR EASTERN
ARIZONA AND WESTERN NEW MEXICO FROM A LONGER-DURATION AND TORNADO PERSPECTIVE, AS LOW-LEVEL WINDS OTHERWISE WILL TEND TO TAKE ON MORE OF A WESTERLY COMPONENT OVER TIME FARTHER WEST ACROSS ARIZONA AS THE UPPER TROUGH APPROACHES. SEVERE PROBABILITIES HAVE BEEN INCREASED/EXPANDED NORTHWARD TOWARD THE FOUR CORNERS/COLORADO PLATEAU VICINITY, WHERE AN ATYPICALLY RARE SETUP OF
DEEP-LAYER/LOW-LEVEL SHEAR COINCIDENT WITH MODEST BUT ADEQUATE SEVERE-CONDUCIVE DEGREE OF DESTABILIZATION IS EXPECTED.

AS COMPARED TO YESTERDAY, A GREATER COVERAGE OF STORMS WILL LIKELY EXIST BY LATER TODAY/AFTERNOON, WHICH MAY MEAN A LESS-DISCRETE NATURE OF THE SUPERCELLS, BUT WITH MORE NUMEROUS SEVERE-CALIBER/SUPERCELL STORMS CAPABLE OF LARGE HAIL, DAMAGING
WINDS AND A TORNADO RISK. RECENT TUCSON WSR-88D VWP DATA STILL
REFLECTS STRONG LOW-LEVEL SHEAR/SRH AND (SPLITTING)
SUPERCELL-FAVORABLE DEEP-LAYER WIND PROFILES, WITH THE PROBABILITY
THAT TORNADO POTENTIAL WILL PROBABLY MAXIMIZE ACROSS EASTERN
ARIZONA/FAR WESTERN NEW MEXICO THIS AFTERNOON INTO EVENING,
ESPECIALLY WHERE TOPOGRAPHY INFLUENCES A LOW-LEVEL EASTERLY WIND
COMPONENT. LARGE HAIL WILL BE ASSOCIATED WITH BOTH LEFT-MOVING AND
RIGHT-MOVING SUPERCELLS.
 
Yeah, today gonna be interesting too. QLCS line segments also in the mix here and there.

Solid tornado last night in Arizona. Questions to be made about warning process. Regardless of lack of experience with such tornsdo event, they should be trained for these situations you know?
 
Yeah, today gonna be interesting too. QLCS line segments also in the mix here and there.

Solid tornado last night in Arizona. Questions to be made about warning process. Regardless of lack of experience with such tornsdo event, they should be trained for these situations you know?
That is pretty interesting and completely agree with you but aren’t they already trained though I thought
 
Yeah, today gonna be interesting too. QLCS line segments also in the mix here and there.

Solid tornado last night in Arizona. Questions to be made about warning process. Regardless of lack of experience with such tornsdo event, they should be trained for these situations you know?

If you work for the NWS and can’t recognize a radar couplet on a day when it was well forecasted in advance, that’s a problem.
 
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