May 24, 2013
THE MEAN UPPER PATTERN WILL FEATURE A SERIES OF SHORT WAVE TROUGHS MOVING QUICKLY SEWD ACROSS THE CNTRL AND ERN CONUS FROM SWRN CANADA. WEAK SURFACE HIGH PRESSURE WILL MOVE QUICKLY ACROSS THE SERN STATES FRI NIGHT...WITH THE NEXT CLIPPER SYSTEM EXITING THE E COAST BY SUN MORNING. WITH GULF MOISTURE EFFECTIVELY SHUT OFF...EXPECT A DRY COLD FRONTAL PASSAGE OVERNIGHT SAT. HIGH PRESSURE SYSTEM BEHIND THIS FRONT WILL USHER IN A COOLER AND DRIER AIR MASS THAN ITS PREDECESSOR WITH BELOW AVERAGE TEMPS SUN AND MON. THE HIGH EXITS THE E COAST MON NIGHT WITH ONSHORE FLOW INCREASING MOISTURE AND TEMPS AHEAD OF THE NEXT TROUGH AND COLD FRONT...WHICH WILL AFFECT THE CWA TUE AND TUE NIGHT. THE 02/12Z EURO IS TRENDING SLOWER AND DEEPER WITH THIS SYSTEM THAN THE GEM.
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