DAY 1 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK
0742 AM CDT SUN AUG 25 2013
VALID 251300Z - 261200Z
...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE UPPER MS
VALLEY INTO UPPER GREAT LAKES...
...SYNOPSIS...
AN EXPANSIVE MID TO UPPER-LEVEL ANTICYCLONE WILL REMAIN ANCHORED
OVER ERN KS/WRN MO WITH A NUMBER OF LOW-AMPLITUDE VORTICITY MAXIMA
PIVOTING AROUND ITS PERIPHERY. TO THE WEST...A PRONOUNCED VORTICITY
MAXIMUM WITHIN THE BASE OF A LARGER-SCALE TROUGH OVER THE FAR NERN
PACIFIC WILL PROGRESS NNEWD FROM THE NRN CA COAST ACROSS THE PACIFIC
NW. IN THE LOW LEVELS...A WEAK COLD FRONT ASSOCIATED WITH A
MIDLEVEL IMPULSE CROSSING ONTARIO INTO QUEBEC WILL SETTLE SWD INTO
THE UPPER GREAT LAKES. THE WRN EXTENSION OF THIS BOUNDARY WILL
REMAIN QUASI-STATIONARY FROM LOW PRESSURE OVER SD TO A DEVELOPING
LEE CYCLONE OVER CNTRL MT.
Any source
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