351  
FXUS10 KWNH 040659  
PMDHMD  
 
MODEL DIAGNOSTIC DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
159 AM EST WED MAR 04 2020  
 
VALID MAR 04/0000 UTC THRU MAR 07/1200 UTC  
 
...SEE NOUS42 KWNO (ADMNFD) FOR THE STATUS OF THE UPPER AIR  
INGEST...  
 
00Z MODEL EVALUATION WITH PREFERENCES AND CONFIDENCE INTERVALS  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
ANY NAM/GFS INITIALIZATION ERRORS NOTED DO NOT SEEM TO DEGRADE  
THEIR SHORT RANGE FORECASTS.  
 
SYSTEMS IMPACTING THE LOWER 48  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
THE GUIDANCE SHOWS SMALL DIFFERENCES WITH THE LOW MOVING ALONG THE  
GULF COAST AND OFFSHORE THE SOUTHEAST, THE DEEP LAYER CYCLONE  
MOVING NEAR THE US/CANADIAN BORDER, AS WELL AS WITH AN UPPER  
TROUGH MOVING TOWARDS THE WEST COAST SATURDAY MORNING. SINCE  
THESE ISSUES LIE SAFELY WITHIN THE 12Z GLOBAL ENSEMBLE SPREAD,  
PREFER A COMPROMISE OF THE 00Z GFS, 00Z NAM, 00Z UKMET, 00Z  
CANADIAN, AND 00Z ECMWF WITH SLIGHTLY ABOVE AVERAGE CONFIDENCE.  
THIS IMPLIES LEANING AWAY FROM THE 00Z NAM/00Z CANADIAN DOWN SOUTH  
AND OFFSHORE THE SOUTHEAST AND AWAY FROM THE MORE NORTHERLY 00Z  
NAM NEAR THE GREAT LAKES.  
 
MODEL TRENDS AT WWW.WPC.NCEP.NOAA.GOV/HTML/MODEL2.SHTML  
500 MB FORECASTS AT WWW.WPC.NCEP.NOAA.GOV/H5PREF/H5PREF.SHTML  
 
ROTH  
 

 
 
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