NOUS41 KWBC 191920



Technical Implementation Notice 12-44

National Weather Service Headquarters Washington DC

320 PM EDT Wed Sep 19 2012


To:       Subscribers:

          -Family of Services

          -NOAA Weather Wire Service

          -Emergency Managers Weather Information Network


          Other NWS users and employees 


From:     Andy Rost

          Director, NWS National Operational Hydrologic

          Remote Sensing Center


Subject   NOHRSC Model Expansion and Forecast

          Operational Products


The following two enhancements to the domain and forecast cycle of the NOHRC Snow Model have been available on an experimental basis since October 27, 2011. Effective October 21, 2012 NOHRSC will implement these enhancements operationally:  

1. Expand the model’s geospatial domain into

   include the Great Lakes drainage area and

2. Execute the model in a 72 hour forecast mode where the

   first 18 forecast hours are forced by output from the

   Rapid Refresh (RR) model and the remaining 54 hours are

   forced by output from the North American Mesoscale (NAM)



For more information, contact:


Andy Rost

Director, NOHRSC


National Technical Implementation Notices are online at: