####018001349####
FXUS10 KWNH 140317

PMDHMD

 

MODEL DIAGNOSTIC DISCUSSION

NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD

1016 PM EST FRI FEB 13 2009

 

VALID FEB 14/0000 UTC THRU FEB 17/1200 UTC

 



...SEE NOUS42 KWNO ADMNFD FOR THE STATUS OF THE UPPER AIR

INGEST...





00Z/14 NAM COMPARISONS





ANY INITIALIZATION ERRORS WITH THE NAM DO NOT APPEAR TO

SIGNIFICANTLY IMPACT ITS SOLUTION.





...WAVE CROSSING THE CENTRAL APPALACHIANS EARLY DAY 1...



THE NAM CLUSTERS REASONABLY WELL WITH BOTH THE 12Z/13 GFS AND

ECMWF WITH THIS SYSTEM.





...WAVE CROSSING THE SOUTHERN ROCKIES EARLY DAY 1...



THE NAM IS CONSIDERABLY SLOWER THAN THE 12Z/13 GFS WITH THIS

IMPULSE AS IT CLEARS THE SOUTHEASTERN STATES LATE DAY 2.  BOTH

MODELS ARE MORE DEVELOPED THAN THE 12Z/13 ECMWF.





...CYCLONE OFF THE WEST COAST DAYS 2 AND 3...



THE NAM AND THE 12Z/13 ECMWF ARE BOTH FARTHER WEST THAN THE 12Z/13

GFS WITH THIS SYSTEM...AND LESS PROGRESSIVE.





...CLIPPER SAILING INTO THE DAKOTAS DAY 3...



THE NAM AND 12Z/13 ECMWF ARE BOTH SLOWER THAN THE 12Z/13 GFS WITH

THIS SYSTEM OVER THE UPPER MISSISSIPPI VALLEY LATE DAY 3.





...MODEL TREND GRAPHICS AT

WWW.HPC.NCEP.NOAA.GOV/HTML/MODEL2.SHTML...



...500 MB FORECASTS AT WWW.HPC.NCEP.NOAA.GOV/H5PREF/H5PREF.SHTML





CISCO

q	$$