699  
ACUS11 KWNS 110221  
SWOMCD  
SPC MCD 110220  
AZZ000-110345-  
 
MESOSCALE DISCUSSION 1913  
NWS STORM PREDICTION CENTER NORMAN OK  
0920 PM CDT MON AUG 10 2026  
 
AREAS AFFECTED...PARTS OF SOUTHERN AZ  
 
CONCERNING...SEVERE THUNDERSTORM WATCH 561...  
 
VALID 110220Z - 110345Z  
 
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 561  
CONTINUES.  
 
SUMMARY...AN ISOLATED THREAT FOR SEVERE HAIL/WIND CONTINUES THIS  
EVENING ACROSS PARTS OF SOUTHERN ARIZONA.  
 
DISCUSSION...CONVECTION HAS TENDED TO FOCUS/SPREAD SLOWLY WESTWARD  
ACROSS SOUTHERN AZ THIS EVENING, WITH MODEST (15-20 KT) EASTERLY  
MID-LEVEL FLOW PRESENT ON RECENT VWPS FROM KEMX. A MEASURED SEVERE  
GUST TO 66 MPH WAS OBSERVED TO THE EAST OF KTUS WITH A SMALL CELL,  
AND ANY ONGOING CONVECTION SHOULD ALSO BE CAPABLE OF PRODUCING  
ISOLATED SEVERE GUSTS GIVEN THE VERY WELL MIXED BOUNDARY LAYER  
OBSERVED ON THE 00Z PHX SOUNDING. IN FACT, MODIFYING THIS SOUNDING  
FOR THE LATEST SURFACE OBSERVATIONS AT KPHX (105/60F) SUGGESTS THAT  
MINIMAL MLCIN IS PRESENT AT THE MOMENT. STILL, GIVEN A DEARTH OF  
UPSTREAM CONVECTION OVER THE MOGOLLON RIM, APPRECIABLE SEVERE WIND  
RISK IN THE NEAR TERM WILL PROBABLY TEND TO REMAIN FAIRLY ISOLATED  
AND CONFINED TO PARTS OF SOUTHERN AZ WITH ONGOING CONVECTION.  
OCCASIONAL HAIL MAY ALSO OCCUR WITH THE STRONGEST CORES.  
 
..GLEASON.. 08/11/2026  
   
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT  
 
ATTN...WFO...TWC...PSR...  
 
LAT...LON 31951348 32581348 32761224 33051088 32730972 32470953  
32041015 31521182 31951348  
 
MOST PROBABLE PEAK WIND GUST...55-70 MPH  
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN  
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