044  
ACUS11 KWNS 182007  
SWOMCD  
SPC MCD 182006  
MEZ000-MAZ000-NHZ000-RIZ000-CTZ000-VTZ000-182130-  
 
MESOSCALE DISCUSSION 1188  
NWS STORM PREDICTION CENTER NORMAN OK  
0306 PM CDT THU JUN 18 2026  
 
AREAS AFFECTED...PORTIONS OF NEW ENGLAND  
 
CONCERNING...TORNADO WATCH 353...  
 
VALID 182006Z - 182130Z  
 
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 353 CONTINUES.  
 
SUMMARY...THUNDERSTORMS TO CONTINUE EASTWARD FOR THE NEXT COUPLE OF  
HOURS. THREAT FOR DAMAGING WIND AND ISOLATED TORNADOES WILL  
CONTINUE.  
 
DISCUSSION...A LINE OF THUNDERSTORMS CONTINUES EASTWARD ACROSS  
EASTERN MAINE INTO MASSACHUSETTS AND NORTHERN CONNECTICUT. THESE  
STORMS HAVE PRODUCED REPORTS OF WIND DAMAGE AND GUSTS UP TO 60-64  
MPH THIS AFTERNOON. WHILE THERMO PROFILES HAVE BEEN MARGINAL, THE  
NEAR SURFACE AND MID-LEVEL FLOW REMAINS STRONG. THE LOW-LEVEL JET  
AXIS HAS BEGUN TO SHIFT OFFSHORE, HOWEVER, DEEP LAYER FLOW AROUND  
40-50 KTS REMAINS NEAR THE COAST INTO PORTIONS OF EASTERN/CENTRAL  
MAINE. DAMAGING WIND AND ISOLATED TORNADO POTENTIAL WILL CONTINUE  
FOR ANOTHER 1-2 HOURS WITHIN WW353 BEFORE GRADUAL WEAKENING AND  
STORMS SHIFT OFFSHORE.  
 
..THORNTON.. 06/18/2026  
   
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
 
 
ATTN...WFO...GYX...BOX...OKX...ALY...  
 
LAT...LON 42957247 43747183 44667128 44667048 44216989 43716983  
42987040 42077157 41507225 41817293 42307302 42957247  
 
MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH  
MOST PROBABLE PEAK WIND GUST...55-70 MPH  
 
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