Upcoming Mesoscale Branch Implementations


If the link is active, click on model to see more information on recent or upcoming implementations.
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Model

What

When

North American Mesoscale (NAM) System Version 4 Alaska/CONUS nests move to 3 km resolution; numerous analysis/physics changes; 12-h NDAS w/3-h analysis update for the 12 km parent domain replaced with a 6-h spin-up cycle with hourly analysis updates for the 12 km parent domain and 3 km CONUS/Alaska nests. December 2016-January 2017
RTMA/URMAv5 Sub-hourly analysis; expand CONUS grid westward; Improve ceiling analysis by using HRRR as a background over CONUS; Elevate ceiling analysis from experimental to operational; Include Mesonet visibility and UrbaNet observations in analysis; Move mesonet reject lists from GSI fixed file to SDM-reject/edtbft; Implement “GLERL adjustment” to coastal obs near Great Lakes; Include additional satellite winds from Cryosat, Jason; Add 24 hour precip total for URMA-CONUS; Add precip URMA for AK and PR January 2017
RTMA/URMAv6 Increase observational data used (eg., URBANet, satellite winds from Cryosat, Jason, polar satellite data for cloud cover and ceiling); Add sea level pressure analysis; Add cloud cover and cloud ceiling analysis for OCONUS RTMA; Add blended GFS/HIRESW background for Guam; Upgrade from 2.5 to 1.25 km resolution for Puerto Rico RTMA&URMA; Add dew point, wind, ceiling and visibility to airport listings for FAA; Complete HRRR-era reanalysis for National Blend of Models; Add URMA for Guam and American Samoa; Add min/maxRH analysis (all domains); Use EMC/GFE unified terrain and land/sea mask for OCONUS domains Summer/Fall 2017
Short-Range Ensemble Forecast System (SREFv8) Increase horizontal resolution from 16km to 13km; increase model vertical resolution from 40 to 50 levels; connect extension of RAP as ARW control member; connect NAM as NMMB control member; begin use of stochastic physics in some members. Fall 2017
HREF/HIRESW Increase horizontal resolution of existing members from 4.2 km to 3.2 km; add "NSSL" WRF-ARW member; enhance HREF ensemble products, add OCONUS product generation. Summer-Fall 2017