630  
ACUS11 KWNS 212044  
SWOMCD  
SPC MCD 212043  
NJZ000-MDZ000-DEZ000-VAZ000-DCZ000-212215-  
 
MESOSCALE DISCUSSION 1697  
NWS STORM PREDICTION CENTER NORMAN OK  
0343 PM CDT TUE JUL 21 2026  
 
AREAS AFFECTED...EASTERN VIRGINIA INTO THE DELMARVA  
 
CONCERNING...SEVERE THUNDERSTORM WATCH 509...  
 
VALID 212043Z - 212215Z  
 
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 509  
CONTINUES.  
 
SUMMARY...THE SEVERE WEATHER THREAT WILL CONTINUE THROUGH THE  
AFTERNOON AND INTO THE EVENING.  
 
DISCUSSION...STORMS ACROSS VIRGINIA AND INTO THE DELMARVA HAVE  
MOSTLY LACKED STRUCTURE THUS FAR WITH ONLY OCCASIONAL STRONGER  
MULTI-CELL STORMS. AS HEIGHT FALLS OVERSPREAD THE AREA THIS EVENING,  
EXPECT MORE ROBUST CONVECTION WITH A GREATER DAMAGING WIND THREAT  
AND AN EVENTUAL LINE OF STORMS ALONG OR AHEAD OF THE COLD FRONT,  
ADVANCES EAST. IN ADDITION, STRENGTHENING MID-LEVEL AND LOW-LEVEL  
FLOW WILL ASSIST IN STORM ORGANIZATION, FURTHER SUPPORTING THE  
THREAT.  
 
..BENTLEY.. 07/21/2026  
   
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
 
 
ATTN...WFO...PHI...AKQ...LWX...RNK...  
 
LAT...LON 36648039 37457909 38317774 38907701 39477640 39497553  
39107487 38507479 37967507 37297548 36677596 36648039  
 
MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH  
MOST PROBABLE PEAK WIND GUST...55-70 MPH  
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN  
 
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