895  
ACUS11 KWNS 211435  
SWOMCD  
SPC MCD 211435  
NYZ000-CTZ000-NJZ000-211600-  
 
MESOSCALE DISCUSSION 1687  
NWS STORM PREDICTION CENTER NORMAN OK  
0935 AM CDT TUE JUL 21 2026  
 
AREAS AFFECTED...NORTHERN NEW JERSEY INTO SOUTHEAST NEW YORK AND  
SOUTHWEST CONNECTICUT  
 
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY  
 
VALID 211435Z - 211600Z  
 
PROBABILITY OF WATCH ISSUANCE...20 PERCENT  
 
SUMMARY...A LOCALIZED SEVERE WEATHER THREAT IS EXPECTED THIS MORNING  
ACROSS NORTHEAST NEW JERSEY, SOUTHEAST NEW YORK, AND SOUTHWEST  
CONNECTICUT.  
 
DISCUSSION...A SUPERCELL HAS DEVELOPED ALONG A WARM FRONT IN  
NORTHERN NEW JERSEY THIS MORNING. THIS SUPERCELL SHOULD CONTINUE  
EAST ALONG THE WARM FRONT THROUGH THE MORNING WITH SOME LARGE HAIL  
AND DAMAGING WIND THREAT. IN ADDITION, STRONGER SOUTHEASTERLY FLOW  
OFF THE ATLANTIC MAY LEAD TO SOME GREATER LOW-LEVEL SHEAR AND  
TORNADO POTENTIAL, ESPECIALLY RIGHT ALONG THE WARM FRONT. THEREFORE,  
SOME TORNADO THREAT MAY ALSO EXIST WITH THIS CELL AS IT CONTINUES  
EAST. THE OVERALL THREAT IS SOMEWHAT MUTED AT THIS TIME BY THE  
RELATIVELY WEAK INSTABILITY, BUT MID 70S DEWPOINTS ARE ADVECTING  
NORTHEASTWARD QUICKLY AND WILL CONTINUE TO DESTABILIZE THE AIRMASS  
SOUTH OF THIS FRONT. THEREFORE, THIS CELL AND ANY ADDITIONAL CELLS  
WHICH DEVELOP ALONG THE FRONT WILL BE MONITORED CLOSELY THIS  
MORNING, BUT THE LIMITED INSTABILITY SHOULD MITIGATE THE NEED FOR A  
WATCH.  
 
..BENTLEY/MOSIER.. 07/21/2026  
   
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
 
 
ATTN...WFO...OKX...PHI...  
 
LAT...LON 41247344 41147296 40957293 40787310 40717364 40747428  
41037426 41207413 41247344  
 
MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH  
MOST PROBABLE PEAK WIND GUST...55-70 MPH  
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN  
 
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