251  
ACUS11 KWNS 221714  
SWOMCD  
SPC MCD 221714  
MEZ000-NHZ000-221845-  
 
MESOSCALE DISCUSSION 1708  
NWS STORM PREDICTION CENTER NORMAN OK  
1214 PM CDT WED JUL 22 2026  
 
AREAS AFFECTED...A LARGE PORTION OF MAINE  
 
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE  
 
VALID 221714Z - 221845Z  
 
PROBABILITY OF WATCH ISSUANCE...40 PERCENT  
 
SUMMARY...A GRADUAL INCREASE IN STORM COVERAGE AND INTENSITY IS  
EXPECTED THROUGH THE AFTERNOON. A WATCH MAY BE NEEDED.  
 
DISCUSSION...STORMS HAVE STARTED TO DEVELOP ACROSS WESTERN MAINE  
WHERE TEMPERATURES ARE IN THE MID 70S WITH DEWPOINTS IN THE MID 60S  
F. CONTINUED HEATING AHEAD OF THIS ACTIVITY WILL RESULT IN GREATER  
DESTABILIZATION THIS AFTERNOON AND ADDITIONAL STORM COVERAGE. 35 TO  
40 KNOTS OF SHEAR IS IN PLACE (PER SPC MESOANALYSIS AND REGIONAL  
VWPS) WHICH WILL AID IN STORM ORGANIZATION INCLUDING SOME SUPERCELL  
STRUCTURES. THE RELATIVELY WEAK INSTABILITY CASTS SOME DOUBT ON THE  
TOTAL COVERAGE OF SEVERE STORMS, BUT IF SEVERAL SEVERE STORMS CAN  
DEVELOP, A SEVERE THUNDERSTORM WATCH MAY NEED TO BE ISSUED.  
 
..BENTLEY/THOMPSON.. 07/22/2026  
   
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
 
 
ATTN...WFO...CAR...GYX...  
 
LAT...LON 45997046 46667011 47246951 47576918 47406882 47446820  
47066765 45776774 45246834 44026955 42957076 43327092  
44587112 45477085 45997046  
 
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH  
MOST PROBABLE PEAK WIND GUST...55-70 MPH  
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN  
 
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