Technical Implementation Notice 10-49, Amended

National Weather Service Headquarters Washington DC

206 PM EST Fri Dec 10 2010



To:       Subscribers:

          -Family of Services

          -NOAA Weather Wire Service

          -Emergency Managers Weather Information Network


          Other NWS partners and employees


From:     Timothy McClung

          Chief, Science Plans Branch

          Office of Science and Technology


Subject:  Amended:  Upgrade of the NCEP Air Quality Forecast
          System Effective December 14, 2010



Amended to change the date of implementation of changes from December 21, 2010, to December 14, 2010.  Implementation of the changes to the Air Quality Forecast System is sooner than specified by NWS Policy (NWS Instruction 10-1805). The reduction of the normal advance lead time was approved to ensure the product will become available before the extended computer system moratorium. Minimal changes to software will be necessary to accommodate this product change.


Effective Tuesday, December 14, 2010 at 1200 coordinated

Universal Time (UTC), the National Centers for Environmental Prediction (NCEP) will upgrade the Ozone Model run in its operational production suite. This upgrade will provide the following changes to this system:


 - Expand the operational ozone prediction products to add

   maximum 1 hour average and maximum 8 hour average ozone

   for the first day of prediction for CONUS


Once operational, the output from this enhanced processing will be available from the NWS National Digital Guidance Database (NDGD) server at:


Maximum 1 hour average and maximum 8 hour average ozone for the first day of prediction for CONUS are currently generated twice per day at NCEP.  These data can be obtained from the experimental NDGD server at:


More information on NCEP model changes can be found at:


For questions concerning EMC issues, please contact:


  Jeff McQueen

  NCEP, Environmental Modeling Center

  Camp Springs , MD

  301 763 8000 X 7226


For other questions concerning these changes, contact:


  Rebecca Cosgrove

  NCEP, Production Management Branch

  Camp Springs , MD

  301 763 8000 X7148


NWS National Technical Implementation Notices are online at: