NAM AIR QUALITY DIAGNOSTIC DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
1005 AM EDT FRI AUG 26 2011
 

*** The following information pertains to initialization errors
noted on the 12Z NAM that may negatively impact the performance of
the 12Z CMAQ output as used for air quality forecasting.
Specifically, errors that apply to temperature, winds, relative
humidity and precipitation are included. This discussion only
applies to geographical regions of the CONUS where air quality is
currently forecast to be degraded (i.e. CODES:
YELLOW/ORANGE/RED/PURPLE/MAROON). ***


...CALIFORNIA...

NO MAJOR ISSUES WITH THE 12Z NAM INITIALIZATION.

...OH VALLEY/TN VALLEY TO GULF COAST...

NO MAJOR ISSUES WITH THE 12Z NAM INITIALIZATION

..INTERIOR PORTIONS OF GEORGIA/ALABAMA....

NO MAJOR ISSUES WITH THE 12Z NAM INITIALIZATION

BANN