810
ACUS11 KWNS 262223
SWOMCD
SPC MCD 262223
MEZ000-270100-
MESOSCALE DISCUSSION 0865
NWS STORM PREDICTION CENTER NORMAN OK
0523 PM CDT TUE MAY 26 2026
AREAS AFFECTED...PARTS OF NORTHERN MAINE
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 262223Z - 270100Z
PROBABILITY OF WATCH ISSUANCE...5 PERCENT
SUMMARY...A LINE OF THUNDERSTORMS MAY PROGRESS ACROSS THE
INTERNATIONAL BORDER BY AROUND 8 PM EDT, WITH CONTINUING POTENTIAL
FOR A FEW STRONG GUSTS BEFORE WEAKENING FURTHER THEREAFTER.
DISCUSSION...THE MOST PROMINENT THUNDERSTORM ACTIVITY, WITHIN A
PRE-FRONTAL CONVECTIVE BAND NOW ADVANCING TO THE SOUTHEAST OF THE
ST. LAWRENCE VALLEY, APPEARS TO BE PROPAGATING A BIT SLOWER AND TO
THE RIGHT OF THE 50-60 KT DEEP-LAYER WESTERLY AMBIENT MEAN FLOW, BUT
STILL AROUND 40 KT. WITH THIS CONTINUING MOTION, STORMS ARE ON PACE
TO PROGRESS ACROSS THE INTERNATIONAL BORDER, COINCIDENT WITH A BROAD
AREA OF LOWER PRESSURE TO THE SOUTH OF THE PRIMARY SURFACE CYCLONE,
BETWEEN 23-00Z. LATEST MESOANALYSIS SUGGESTS THAT THE MODESTLY DEEP
MIXED BOUNDARY LAYER AHEAD OF ACTIVITY MAY REMAIN SUFFICIENTLY
UNSTABLE TO SUPPORT CONVECTION CAPABLE OF PRODUCING A FEW STRONG
SURFACE GUSTS INTO PORTIONS OF NORTHERN MAINE, BEFORE STORMS WEAKEN
FURTHER WITH DIMINISHING SEVERE WEATHER POTENTIAL THEREAFTER.
..KERR/THOMPSON.. 05/26/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...CAR...GYX...
LAT...LON 46337223 46647119 46907038 47116938 46486815 45816994
45777058 46337223
MOST PROBABLE PEAK WIND GUST...55-70 MPH
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