SPC MESOSCALE DISCUSSION 1735 FOR NRN ME
CONCERNING...SEVERE THUNDERSTORM POTENTIAL...
VALID 182253Z - 190100Z
SUPERCELLS CAPABLE OF PRODUCING PRIMARILY LARGE HAIL AND ISOLATED
STRONG WIND GUSTS EXPECTED TO PERSIST ANOTHER 2-3 OVER PARTS OF NRN
ME.
STORMS CONTINUE DEVELOPING WITHIN LOW LEVEL CONVERGENCE AXIS ACROSS
NRN ME. WV IMAGERY SHOWS SHORTWAVE TROUGH AND ASSOCIATED MID LEVEL
JET EJECTING ENEWD THROUGH SRN QUEBEC AND WRN NEW BRUNSWICK. THIS
FEATURE IS ENHANCING LARGE SCALE ASCENT AND DEEP LAYER SHEAR OVER
ME. THE ATMOSPHERE REMAINS MODERATELY UNSTABLE OVER NRN ME WITH
MLCAPES AROUND 1500 J/KG. DEEP LAYER SHEAR IS SUPPORTIVE OF A FEW
SUPERCELL STORMS CAPABLE OF PRODUCING PRIMARILY LARGE HAIL AND
ISOLATED STRONG WIND GUSTS. LOW LEVEL FLOW SHOULD BEGIN TO VEER
LATER THIS EVENING AS SHORTWAVE TROUGH CONTINUES EWD. THIS IN
CONJUNCTION WITH WEAKENING INSTABILITY ASSOCIATED WITH COOLING
BOUNDARY LAYER SHOULD RESULT IN A GRADUAL WEAKENING TREND AFTER
ANOTHER COUPLE HOURS.
..DIAL.. 08/18/02
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