EXTENDED FORECAST DISCUSSION NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 1057 AM EST TUE MAR 01 2016 VALID 12Z FRI MAR 04 2016 - 12Z TUE MAR 08 2016 ...GENERAL FLOW PATTERN... PROGRESSIVE FLOW OVER THE LOWER 48 LATE THIS WEEK WILL FEATURE A SURFACE LOW SPINNING UP OFF THE CAROLINA COAST EARLY FRIDAY FOLLOWED BY AN UPSTREAM CLIPPER SYSTEM STREAKING FROM THE UPPER MIDWEST TO THE MID-ATLANTIC REGION THIS WEEKEND. STARTING EARLY NEXT WEEK...THE PATTERN SHOULD BECOME QUITE AMPLIFIED ACROSS THE CONUS AS ANOMALOUS TROUGHING DIGS INTO WESTERN U.S. WHILE AN EXPANSIVE RIDGE BUILDS IN OVER THE EASTERN TWO THIRDS OF THE NATION. ...MODEL EVALUATION/PREFERENCES... MODELS HAVE COME INTO MUCH BETTER AGREEMENT WITH THE SURFACE LOW DEEPENING OFF THE CAROLINA COAST EARLY FRIDAY. THERE ARE STILL DETAIL DIFFERENCES TO BE RESOLVED WITH THE EXACT DEPTH AND TIMING...ESPECIALLY AS IT LIFTS TOWARDS THE CANADIAN MARITIMES FRIDAY NIGHT. GERHARDT