Historical List of Joint Numerical Weather Prediction Unit (JNWPU) / National Meteorological Center (NMC) / National Centers for Environmental Prediction (NCEP) Numerical Analysis and Prediction Systems (1955-present)

NOTE: In compiling this list, there has been no intent to include the many changes to individual models that have occurred through the years; e.g. changes to numerics, physical processes, etc, as well as the multitude of changes that have occurred in producing initial analyses for the numerical models. Here, the intent is to show, in a chronological sense, implementations of distinctively new operational models and, in some instances, dates when forecast length or horizontal/vertical resolution has been increased to satisfy operational requirements. There is an attempt to record dates when models went out of service, generally occurring when a new model was implemented. For more details see the references listed below. Additional information regarding the 'early' years may be found in NMC Office Note 72, by Shuman (1972), entitled 'The Research and Development Program at the National Meteorological Center'.

Listed below the table legend are all numerical analysis and weather/ocean prediction systems going back to the formation of the the JNWPU in 1955. Separate tables are available for Global, Regional/Mesoscale, Ocean/Marine, and Hurricane systems.

Dedication: This page is dedicated to its original creator, Dr. Kenneth Campana (1941-2017), long-time employee of EMC's Global Modeling Branch

Model Table Legend

Abbreviation Definition
CCPA Climatologically Calibrated Precipitation Analysis
RDAS Regional Data Assimilation System
CFS Climate Forecast System
CMAQ Community Multiscale Air Quality Model
DGEX Downscaled GFS by Eta (or NAM) Extension
Eta or ETA Eta Step-Mountain Coordinate Model
FV3 Finite-Volume Cubed-Sphere Dynamical Core
GDAS Global Data Assimilation System
GFS Global Forecast System
GSM Global Spectral Model
GEFS Global Ensemble Forecast System
Abbreviation Definition
GWES Global Wave Ensemble Forecast System
RSM Regional Spectral Model
RTGSST Real-Time Global Sea Surface Temperature Analysis
HIRESW High-Resolution Window Forecast System
HMON Hurricanes in a Multi-scale Ocean-coupled Non-hydrostatic Model
HREF High-Resolution Ensemble Forecast System
HRRR High-Resolution Rapid Refresh
HWRF Hurricane WRF
HYCOM Hybrid Coordinate Ocean Model
LFM Limited Fine-Mesh Model
MOM4 GFDL Modular Ocean Model
MWES Multi Wave Ensemble System
NAM North American Mesoscale
Abbreviation Definition
RTGSST_HR High-Resolution Global Sea Surface Temperature Analysis
RTMA Real-Time Mesoscale Analysis
NAEFS North American Ensemble Forecast System
NDFD NWS National Digital Forecast Database
NEMS NOAA Environmental Modeling System Framework
NGM Nested Grid Model
NLDAS North American Land Data Assimilation System
NMMB NCEP Nonhydrostatic Multiscale Model on B Grid
NGAC NEMS Global Aerosol Capability
NWPS Nearshore Wave Prediction System
POM Princeton Ocean Model
GSM Global Spectral Model
QLM Quasi-Lagrangian Model
Abbreviation Definition
RTMA-RU Rapidly Updated RTMA
RTOFS Real-Time Ocean Forecast System
RUC Rapid Update Cycle
SREF Short-Range Ensemble Forecast System
SWAN Simulating Waves Nearshore Model
URI University of Rhode Island Ocean Model (version of POM)
URMA Unrestricted Real-Time Mesoscale Analysis
WAM-IPE Whole Atmosphere Model-Ionosphere Plasmasphere Electrodynamics Model
WRF Weather Research and Forecast Model
WRF-ARW Advanced Research WRF Model
WRF-NMM WRF Non-Hydrostatic Mesoscale Model
CEFS Canadian Ensemble Forecast System
RAP Rapid Refresh
still Still running as of 2022
Bye Approximate data of system being renamed or retired
Domain Type:
H Hemispheric
G Global
R Regional
Hu Hurricane
O Ocean
E Ensembles
NAVAER Numerical Weather Prediction, NAVAER 50-1P-541
JNWPUB Joint NWP Unit Bulletins (38 of them from 1955-1967)
TPB: NWS Technical Procedures Bulletin
JAM Journal of Applied Meteorology (AMS Journal)
WAF Weather and Forecasting (AMS Journal)
TIN NWS Technical Information Memo
SCN NWS Service Change Notice
#/dy Number of runs per day

Historical List of JNWPU / NMC / NCEP Numerical Analysis and Prediction Systems (1955-present)

Year Type Model Horizontal Resolution Layers Domain Forecast Length Documentation Computer Bye: "Still"=still in ops; MM/YYYY=date of termination or name change; (XXXX)=year of next upgrade #/day
1955 R Baroclinic 300 km 3 US 36-h NAVAER IBM701 (1 kiloflop) 10/1957 1
1955 R Barotropic 600 km 1 N. America+ 72-h 10/1057 1
1956 R Thermtropic 375 km 2 N. America 36-h 10/1957 1
1957 H Barotropic 381 km 1 NH Octagonal 1977 pts 72-h JNWPUB #22 IBM704 (8 kiloflops) 6/1993 2
1958 ? Baroclinic ? 2 36-h JNWPUB #26 1/1962 1
1960 IBM 7090 (67 kiloflops)
1962 H Cressman filtered-equation 381 km 3 NH 36-h JNWPUB #34; NWS TBP #105 6/1966 (anl until Hough (1974) 2
1962 H Barotropic extension 381 km 1 NH 36-96 h 6/1966
1962 H Reed Surface 381 km 2 NH 36-h 6/1966
1963 IBM 7094 (100 kiloflops)
1966 H Primative Equation (PE) 381 km 6 NH (53x57 points) 36-h Shuman and Hovermale, JAM 1968 CDC 6600 (3 megaflops) 8/1980 (1/1978) 2
1968 O+H TDL Wave Model 381 km 36-h 1986
1970 H PE (Barotropic Extension) 381 km 1 NH 84-144 h 8/1980 (1/1978) 1
1971 R Limited-Area Fine Mesh (LFM) 190.5 km 6 N. America 24-h NWS TPB #67 2/1996 (1975) 2
1972 3 IBM 360-195 (6 megaflops each)
1974 G PE 2.5 deg 8 Global 12-h (FNL) NWS TPB #115 1976
1975 R LFM 190.5 km 6 N. America 36-h NWS TPB #129 2/1996 (1976) 2
1976 R LFM 190.5 km 6 N. America 48-h NWS TPB #162 2/1996 (3/1979) 2
1976 G PE 2.5 deg 9 Global 12-h (FNL) NWS TPB #258 8/1980
1977 G PE 3.75 deg 3 Global to 48-h; NH to 252-h 252-h NWS TPB #215, #257 4/1981 1
1978 H PE 190.5 km 7 NH (129x129 points) 84-h NMC Office Note #177 8/1980 2
1978 H Barotropic extension ? 1 NH 84-240 h 1/1980 1
1978 Hu Moveable Fine-Mesh 60 km 10 Window (50x50 points) 48-h NWS TPB #259 1988
1979 R LFM-II 127 km 7 N. America 48-h NWS TPB #255 2/1996 (1981) 2
1980 H PE extension (4th order finite differencing) 381 km 7 NH 60-144 h NWS TPB #272, #273, NMC Office Note #316 8/1980 1
1980 H Barotropic extension ? 1 NH 144-252 h NMC Office Note #316 8/1980 1
1980 G Global Spectral Model (GSM) (MRF/AVN) R30 12 Global 48-h NMC TPB #282 10/2002 (1983) 2
1980 H Spectral Extension R24 12 NH 48-144 h NMC Office Note #316 4/1981 1
1981 R LFM-II 4th order 190.5 km 7 N. America 48-h NWS TPB #300 2/1996 2
1983 G Global Spectral Model (GSM) (MRF/AVN) R40 12 Global 240-h (00z cycle) Cyber 205 (400 megaflops) 10/2002 (1983) 2
1985 G Global Spectral Model (GSM) (MRF/AVN) R40 18, 12 po Global 240-h (00z); 72-h (12z) NWS TPB #349 10/2002 (1987) 2
1985 R Nested Grid Model (NGM) 80 km 16 N. America 48-h Hoke et al 1985 WAF 3/2009 2
1986 O+G NOAA Ocean Wave 2.5 deg Global 72-h NWS TPB #364 10/1994 2
1987 G Global Spectral Model (GSM) (MRF/AVN) T80 18 Global 240-h (00z); 72-h (12z) 10/2002 (1991) 2
1988 Hu Quasi-Lagrangian Model (QLM) 40 km 10 Window (111x111) 72-h NWS TPB #377 6/1995
1990 Cray YMP (2.6 gigaflops)
1991 G Global Spectral Model (GSM) (MRF/AVN) T126 18 Global 240-h, 00z; 72-h (12z) 10/2002 (1993) 2
1992 G+E Global Ensemble Forecast System (GEFS) T62 12 Global 240-h, 3 members NWS TPB #471 Still (1994) 1
1993 R Eta Step-Mountain Coordinate model ("Early Eta") 80 km 38 N. America 48-h NWS TPB #412 1/2005 (1995) 2
1993 G Global Spectral Model (GSM) (MRF/AVN) T126 28 Global 240-h (00z); 72-h (12z) 10/2002 (2000) 2
1994 R Rapid Update Cycle (RUC) 60 km 25 CONUS 12-h NWS TPB #416 Cray C9016 (16.3 gigaflops) 5/2012 (1998) 8
1994 O+G NOAA Wave Model 2.5 deg 1 Global 72-h NWS TPB #426 3/2000 2
1994 G+E Global Ensemble Forecast System (GEFS) T62 18 Global 384-h; 17 members Still (2000)
1995 Hu GFDL multi-nest 1, 1/3rd, 1/6th deg 18 Window 78-h NWS TPB #424 6/2001
1995 R Meso-Eta 29 km 50 CONUS 33-h (03, 15Z) Black, 1994 WAF 6/1998 2
1995 R Eta model ("Early Eta") 48 km 38 N. America 48-h Rogers eta al 1996 WAF 6/2006 (1998) 2
1997 R Regional Spectral Model (RSM) 10 km 28 Hawaii 48-h NWS TPB #444 9/2011 2
1997 O+R Sea Ice Drift N.A. Arctic, Antarctic 384-h NWS TPB #435 Still (2014) 1
1998 R Eta Step-Mountain Coordinate ("Early Eta") 32 km 45 N. America 48-h (00z, 12z); 33-h (03z); 30-h (18z) NWS TPB #447 1/2005 (1999) 4
1998 R RUC 40 km 40 CONUS 12-h (every 3h); 1-h (other cycles NWS TPB #448 5/2012 (2002) 24
1999 R Eta Step-Mountain Coordinate (Early Eta) 32 km 45 N. America 48-h IBM Class 8, Phase 1 (700 gigaflops) 1/2005 (2000) 4
2000 G Global Spectral Model (GSM) (MRF/AVN) T170 (day 1-7) /T62 (day 8-16) 42 (day 1-7)/28 (day 8-16) Global 384-h (00z); 84-h (06,12,18z) 10/2002 (3/2002) 4
2000 G+E Global Ensemble Forecast System (GEFS) T126 (0-84h); T62 (84-384-h) 28 (0-84 h); 18 (84-384 h) Global 384-h Still (2004)
2000 O+G NOAA Wave Watch III 1.0x1.25 deg 1 Global 72-h (orig) then 126-h NWS TPB #453 Still (2003) 2
2000 R NGM; Eta anl used for IC instead of RDAS 80 km 16 N. America 48-h NWS TPB #464 3/2009 2
2000 R Eta Step-Mountain Coordinate model ("Early Eta") 22 km 50 N. America 60-h (00,12z); 48-h (06,18z) NWS TPB 1/2005 (2002) 4
2000 O+R West North Atlantic Wave .25 x .25 deg 1 North Atlantic 72-h (orig) then 126-h NWS TPB #446 2007 (2003) 2
2000 O+R Alaska Wave .50 x .25 deg 1 Alaskan waters 72-h (orig) then 126-h NWS TPB #456 2007 (2003) 2
2001 Hu GFDL + URI Ocean (coupled) Atmos: 1, 1/3rd, 1/6th deg; Ocean: 1/6th deg A=18, O=23 Window 126-h NWS TPB #472b IBM Class 8, phase2 06/2017 (2003) 4
2001 O+R N. Atlantic Hurricane Wave .25 x .25 deg 1 North Atlantic 72-h NWS TPB #478 11/2010 (2003) 2
2001 O+G RTGSST (3DVAR anl w/in situ and sat. data) 0.5 deg lat/lon NA Global NA NWS TPB #477 10/2017 1
2001 G Seasonal Forecast System T62 28 Global 7 months NWS TPB #480 8/2004 1
2001 R+E Short-Range Ensemble Forecast System (SREF) 48 km 45 (Eta)/28 (RSM) N. America 63-h; 15 members (10 Eta, 5 RSM) Still (2005) 4
2001 R High-Resolution Window (Hiresw) 10 km 50 5 Eta model domains: East/West/Cent CONUS; AK, HI 48-h Still (2003) 1
2001 O Coastal Ocean Forecast System (COFS), w/Princeton Ocean Model (POM) 10-20 km 19 Off Eastern North America 48-h NWS TPB #489 12/2005 1
2001 O+R E. North Pacific Wave .25 x .25 deg 1 East Pacific 126-h NWS TPB #491 11/2010 (2003) 2
2001 R Eta Step-Mountain Model 12 km 60 N. America 84-h (00/12z); 48-h (06/18z) EMC Doc 1/2005 (2003) 4
2002 G Global Spectral Model (GSM) (MRF/AVN) T170 (day 1-7) /T62 (day 8-16) 42/28 Global 384-h (all 4 cycles) 10/2002 (10/2002) 4
2002 G Global Forecast System (renamed from MRF/AVN) T254 (0-84h); T170 (84-180h); T126 (180-384h) 64 (0-84h); 42 (84-180h); 28 (180-384 h) Global 384-h Still (2005) 4
2002 R Rapid Update Cycle (RUC) 20 km 50 CONUS 12-h (every 3h); 1-h (other cycles NWS TPB #490 5/2012 (2005) 24
2002 R High-Resolution Window (HiResW) 8 km 60 East/West/Cent. CONUS, AK, HI, WRF-NMM replaces Eta model 48-h EMC Doc IBM Class 9, Phase 1 (Frost, Snow, 2.5 teraflops) Still (2005) 4
2003 Hu GFDL + URI Ocean (coupled) Atmos: 2 nests (33, 18 km); Ocean (1/6th deg) A=42, O=23 Window (.75x .75 deg) 126-h 06/2017 (2005) 4
2003 O+R N. Atlantic Hurricane Wave .25 x .25 deg 1 North Atlantic 72-h NWS TPB #478 11/2010 (2005) 4
2003 O+R N. Pacific Hurricane Wave .25 x .25 deg 1 North Pacific 72-h 11/2010 (2005) 4
2003 R Eta Step-Mountain Coordinate 12 km 60 N. America 84-h (all 4 cycles) 1/2005 4
2003/2004 O+G NOAA Wave Watch III 1.0 x 1.25 deg 1 Global 168-h (2003); 180-h (2004) NWS TPB #494 11/2007 (replaced by Multi_1 Wave System) 4
2003/2004 O+R W. North Atlantic Wave .25 x .25 deg 1 North Atlantic 168-h (2003); 180-h (2004) NWS TPB #495 11/2007 (replaced by Multi_1 Wave System) 4
2003/2004 O+R Alaska Wave .50 x .25 deg 1 Alaska Waters 168-h (2003); 180-h (2004) NWS TPB #496 11/2007 (replaced by Multi_1 Wave System) 4
2003/2004 O+R E. North Pacific Wave .25 x .25 deg 1 East Pacific 168-h (2003); 180-h (2004) NWS TPB #491 11/2007 (replaced by Multi_1 Wave System) 4
2004 G+E Global Ensemble Forecast System (GEFS) T126 (0-180 h); T62 (180-384 h) 28 Global 384-h, 11 members Still (2005) 4
2004 G Climate Forecast System (CFS, replaces SFM) T62 64 Global 9-10 months Saha et al, 2006 J. Climate Still (2011) 2
2004 R Downscaled GFS with Eta Extension (DGEX) 12 km 60 CONUS and Alaska 84-192 h 3/2017 (2006) 2
2004 R CMAQ (Air Quality model) 12 km 22 NE CONUS 48-h EMC Doc 8/2005 2 (06z, 12z)
2005 R North American Mesoscale (NAM, formerly Eta) 12 km 60 N. America 84-h Still (2006) 4
2005 O+G RTGSST_HR (3DVAR anl) 0.083 deg lat/lon NA Global NA 2/2020 1
2005 R CMAQ 12km 22 Eastern CONUS 48-h 9/2007 2 (06z, 12z)
2005 R+E SREF; Eta/RSM 32 km (Eta, RSM) 60 (Eta); 28 (RSM) N. America 87-h; 15 mbrs (10 Eta, 5 RSM) IBM Class 9, phase 2 (Blue, White, 7 teraflops) Still (2006) 2
2005 R+E SREF; Eta/RSM, add WRF-NMM/ARW 32 km (Eta, RSM), 40 km (WRF-NMM); 45km (WRF-ARW) 60 (Eta); 28 (RSM); 50 (WRF-NMM); 35 (WRF-ARW) N. America 87-h; 21 mbrs (10 Eta, 5 RSM, 3 NMM, 3 ARW) EMC Doc Still (2006) 2
2005 O+R N. Atlantic Hurricane Wave .25 x .25 deg 1 North Atlantic 126-h NWS TPB #478 11/2010 (replaced by Multi-2) 4
2005 O+R N. Pacific Hurricane Wave .25 x .25 deg 1 North Pacific 126-h 11/2010 (replaced by Multi-2) 4
2005 O+R RTOFS_Atlantic (HYCOM, replaces POM) Variable 4-15 km 26 Atlantic Ocean, 20S-70N 120-h EMC Doc 03/2017 1
2005 G GFS T382 (0-180h); T190 (180-384h) 64 Global 384-h Still (2010) 4
2005 R RUC 13 km 50 CONUS 12-h (every 3h); 1-h (other cycles 5/2012 (2010) 24
2005 G+E GEFS T126 (0-180 h); T62 (180-384 h) 28 Global 384-h; 11 members Still (2006) 4
2005 Hu GFDL + URI Ocean (coupled) Atmos=33, 18, 8 km; Ocean: 1/6th deg A=42, O=23 Window (.75 x .75 deg) 126-h 6/2017 4
2006 R NAM; WRF-NMM replaces Eta model 12km 60 N. America 84-h NWS TIN Still (2008) 4
2006 R DGEX; WRF-NMM replaces Eta model 12km 60 CONUS+AK NAM extention; 84-192h NWS TIN 3/2017 2 for each domain
2006 G+E GEFS T126, 14+1 mbrs 28 Global 384h EMC Doc Still (2007) 2
2006 R+E SREF (Eta, RSM, WRF-NMM/ARW) 32-45 km 35 to 60 N. America 87h; 21 mbrs Still (2009) 4 (03,09,15,21z)
2006 R RTMA (Real-time Mesoscale Analysis) 5 km N.A CONUS N.A. NWS TIN Still (2010) 24
2006 O+R Great Lakes Wave Model (NAM-driven) 2.1 min lat x 3 min lon NA Great Lakes 84h 2017 4 (00,06,12,18z)
2006 O+G+E MWES (Multi Wave Ensemble System) 1.0 deg x 1.0 deg (?) NA Global, 10 mbrs 126h EMC Doc 9/2020 4(?)
2007 IBM P6 (17 teraflops)
2007 O+G Global Wave Model (Multi_1, runs WAVEWATCH III) Various (See TIN) NA Global 180h NWS TIN 3/2021 4
2007 R HiResW 4 km (NMM) 5 km (ARW) 35 West/East CONUS, AK, HI, PR 48h EMC Doc Still (2011) 00z (East CONUS, HI); 06z (West CONUS, PR); 12z (East CONUS, HI); 18z (AK, PR)
2007 G+E GEFS T126, 20+1 mbrs 28 Global 384h NWS TIN Still (2010) 2
2007 R CMAQ 12km 22 CONUS 48h NWS TIN Still (2016) 2 (06z, 12z)
2007 Hu HWRF; POM for ocean coupling (2-d in NATL, 1-d in EPAC) 27/9/3km; POM=9 km ATM=43 layers NATL/EPAC 126h NWS TIN Still (2012) 4
2007 G+E NAEFS (US GEFS+ Canada CEFS) 1 deg lat/lon; 5 km products for CONUS Global 384h NWS TIN Still (2010) 2
2008 R NAM 12km (expanded domain) 60 N. America 84h NWS TIN Still (2011) 4
2008 R RTMA 5 km N.A CONUS+AK+HI+PR N.A. NWS TIN Still (2011) 24
2008 O+R Great Lakes Wave Model (NAM-driven) 2.1 min lat x 3 min lon NA Great Lakes 84h NWS TIN 2017 4 (00,06,12,18z)
2008 O+R Great Lakes Wave Model (NDFD-driven) ? NA Great Lakes ? Still 4 (03,09,15,21z)
2008 O+G+E Global Wave Model Ensemble 1.0 deg x 1.0 deg NA Global, 20 mbrs 240h NWS TIN 9/2020 4(?)
2009 R+E SREF Variable 32-35km Variable 35 to 60 N. America 87h, 21 mbrs (10 WRF, 6 Eta, 5 RSM) NWS TIN Still (2015) 4 (03,09,15,21z)
2010 R RUC 13km 50 CONUS 18-h NWS TIN 5/2012
2010 G GFS T574 (0-192h); T190 (192-384h) 64 Global 384h NWS TIN Still (2015) 4
2010 G+E GEFS T190 (0-384h) 28 Global 384h NWS TIN Still (2012) 4
2010 G+E NAEFS (GEFS+CEFS) 1 deg lat/lon; 5 km products for CONUS; 6 km products for AK Global 384h NWS TIN Still (2016) 4
2010 O+G Multi_2 (Hurricane Wave Model, using WWW3) Various (See TIN) NA Global 126h NWS TIN 7/2017 4
2011 R CCPA (Climatologically Calibrated Precipitation Analysis) 5 km HRAP grid NA CONUS NA NWS TIN Still 4
2011 R RTMA 5 km (2.5 km for Guam, add 2.5 km for CONUS) N.A CONUS+AK+HI+PR+Guam N.A. NWS TIN Still (2014) 24
2011 R HIRESW 4.0km (NMM), 5.1km (ARW) 35 CONUS+AK+HI+PR+Guam 48h NWS TIN Still (2014) 2
2011 R NAM; NEMS-NMMB replaces WRF-NMM 12km (N.Amer); 6 km (AK nest); 4 km (CONUS nest); 3 km (HI/PR nest), 1.33 or 1.5 km (FW nest) 60 CONUS parent, Alaska, CONUS, HI, PR, Fire wx nests 84h (12km), 60 h (all nests except FW); 36-h (FW nest) NWS TIN Still (2014) 4
2011 O+G RTGSST (3DVAR anl) 0.5 deg and 0.083 deg lat/lon NA Global NA NWS TIN 2/2020 1
2011 O+G Global RTOFS (HYCOM, Coupled to CICE) 1/12th deg lat/lon 32 Global 192h EMC Doc Still (2020) 1
2011 G CFS; coupiled to GFDL MOM4 T126 (100 km) 64 Global 45 days, 1 season, or 9 months, see Appendix C in AMS Paper AMS Paper Still 4 cycles/day, 16 total runs/day
2012 G GDAS T254 Hybrid Ensemble DA 64 Global 6h (GDAS fcst) NWS TIN Still (2016) 4
2012 G+E GEFS T254 (55km) for 0-192h, T190 for 192-384h 42 Global 384-h NWS TIN Still (2015) 4
2012 G NGAC (Global Aerosol Model) 1 deg lat/lon 64 Global 120h NWS TIN 9/2020 1 (00z)
2012 R RAP (replaces RUC) 13 km 50 N. America 18-h NWS TIN Still (2016) 24
2012 R+E SREF (NMM, ARW, NMMB) 16 km 35 N. America 87h, 21 mbrs (7 each for ARW, NMM, NMMB) NWS TIN Still (2015) 4 (03,09,15,21z)
2012 Hu HWRF; add POM 2-d coupling in EPAC 27/9/3 km; POM=1/6th deg ATM=43 NATL/EPAC/CPAC 126h NWS TIN Still (2014) 4
2013 IBM x86 iDataplex (Tide, Gyre, 1.48 petaflops) 1/2020
2014 O+R Sea Ice Drift (GEFS-driven replaces GFS-Driven) 25 km NA Polar 384h EMC Doc Still 1 (00z)
2014 R NAM (RRTM Radiation, Explicit Convection, F-A Microphysics, GWD) 12km (N.Amer); 6 km (AK nest); 4 km (CONUS nest); 3 km (HI/PR nest), 1.33 or 1.5 km (FW nest) 60 CONUS parent, Alaska, CONUS, HI, PR, Fire wx nests 84h (12km), 60 h (all nests except FW); 36-h (FW nest) NWS TIN Still (2017) 4
2014 O+G+E GWES (Global Wave Ensemble System), formerly MWES 0.5 deg lat/lon NA Global, 20 mbrs 240h NWS TIN 9/2020 4
2014 R RTMA; add URMA (Unrestricted Mesoscale Analysis) 2.5 km for all but 3 km for Alaska N.A RTMA: CONUS+AK+HI+PR+Guam; URMA (CONUS only) N.A. NWS TIN Still (2016) 24
2014 R NLDAS (Regional Land-sfc Assim. System) 0.125 deg 4 CONUS N.A. EMC Doc Still 1 (12z)
2014 R HiResW 3-4.2 km (NMMB, ARW) 40 CONUS+AK+HI+PR+Guam 48h NWS TIN Still (2015) 4
2014 R HRRR 3km 50 CONUS 15h NWS TIN Still (2016) 24
2014 Hu HWRF; POM 27/9/3 km; POM =1/12th deg ATM=61; POM=23 NATL/EPAC/CPAC 126h NWS TIN Still (2016) 4
2014 Hu GFDL; POM Inner nest 1/18th deg; POM (9 km) ATM=42, Ocean=23 NATL/EPAC/CPAC 126h NWS TIN 7/2017 4
2015 IBM x86 + IBM Cray XC40 (Luna, Surge); 5.57 petaflops total 6/2022
2015 G GFS (Spectral) T1534 Semi-Lagrangian (0-240h); T574 (240-384h) 64 Global 384h NWS TIN Still (6/2019 4
2015 O+R Great Lakes Wave; NAM-driven runs use 4 km NAM nest) 2.5 km NA Great Lakes 84h NWS TIN 2017 (NAM-driven); Still (NDFD-driven) 4 (00/06/12/18z from NAM; 03/09/15/21z from NDFD
2015 R+E HIRESW; add HREF (ensemble using HiResW and NAM nest) 3-4.2 km 50 CONUS,AK,HI,PR,Guam; HREF is CONUS-only 48h (36h for HREF) NWS TIN Still (2017) 4
2015 R+E SREF (NMMB, ARW) 13 km 40 N. America 87h, 26 mbrs (13 ARW, 13 NMMB) NWS TIN Still (Last update*) 4
2015 G+E GEFS (GSM) TL574 (33km) to 192h, TL382 (55km) from 192-384h 64 Global, 21 mbrs 384h NWS TIN Still (2017) 4
2015 Hu HWRF; POM coupling for NATL, EPAC only 18/6/2 km: POM 1/12th deg ATM=61; POM=23 All TC Basins 126h NWS TIN Still (2016) 4
2016 G+E NAEFS (GEFS+CEFS) 1 deg lat/lon (global); 2.5 km products for CONUS; 3 km products for Alaska Global 384h NWS TIN Still 4
2016 R RTMA, URMA 2.5 km, 3 km for Alaska N.A. RTMA, URMA : CONUS, AK; RTMA only : HI, PR, Guam N.A. NWS TIN Still (2016) 24
2016 R CMAQ 12km 35 CONUS 48h NWS TIN Still (2021) 2
2016 R RAP 12km (expanded domain) 50 N. America 21h NWS TIN Still (2020) 24
2016 R HRRR 3km 50 CONUS 18h NWS TIN Still (2020) 24
2016 G GDAS T1534 4D-Hybrid Ensemble DA 64 Global 6h (GDAS fcst) NWS TIN Still (2019) 4
2016 R RTMA, URMA 2.5 km, 3 km for Alaska N.A. CONUS, AK, HI, PR, Guam (RTMA only) N.A. NWS TIN Still (2020) 24
2016 O+R NWPS (Nearshore Wave Prediction System), runs SWAN model 1.8 km outer grid; optional nests to 500 m NA On demand at Coastal WFO's 102h EMC Doc Still (2021) 2, on demand at WFO's
2016 Hu HWRF; POM ocean coupling for all NH basins, HWRF ensemble DA 18/6/2 km ATM=61 (NATL, EPAC, CPAC), 43 (WPAC, NIO); POM= 23 All TC Basins 126h NWS TIN Still (2017) 4
2017 R NAM 12km (parent); 3 km (CONUS, AK, HI nests; 1.5 km (FW nest) 60 CONUS parent; Alaska, CONUS, HI, PR, Fire wx nests 84/60/36h NWS TIN Still (Last update*) 4
2017 G GFS/GDAS (GSM, NEMS-IO replaces Spectral IO) T1534 Semi-Lagrangian (0-240h); T574 (240-384h) 64 Global 384h NWS SCN Still (2019); Last update of GSM 4
2017 G NGAC (Global Aerosol Model) T126 64 Global 120h NWS SCN 9/2020 2 (00z, 12z)
2017 R+E HIRESW, add HREF (ensemble using HiResW and NAM nest) 3.2 km; models = NMMB, ARW, ARW2 (2nd ARW run) 50 CONUS,AK,HI,PR,Guam; HREF for all except Guam 48h (36h for HREF) NWS SCN Still (2021) 2 for each domain
2017 O+G Global RTOFS 1/12th deg 41 Global 192h EMC Doc Still (2020) 1
2017 R RTMA/URMA, add RTMA-RU (Rapidly Updated RTMA) 2.5 km, 3 km for Alaska N.A. RTMA, URMA : CONUS, AK; HI, PR; RTMA-only: Guam; RTMA-RU is CONUS only N.A. NWS SCN Still (2020) 24 (RTMA/URMA), 96 (RTMA-RU)
2017 O+R Great Lakes Wave Model, NDFD-driven Unstructured grid 250 m to 2.5 km NA Great Lakes 147h NWS SCN Still 4 (03,09,15,21z)
2017 Hu HMON 18/6/2km 43 NATL, EPAC, CPAC 126h NWS SCN Still (2018) 4
2017 Hu HWRF; HYCOM coupling for WPAC/NIO basins, 1-way coupling to WW-III 18/6/2 km ATM= 75 (NATL, EPAC, CPAC), 61 (WPAC, NIO); POM=40 All TC Basins 126h NWS SCN Still (2018) 4
2018 R RAP 12 km 50 N. America 21h; 03/09/15/21Z to 39-h NWS SCN Still (2020) 24
2018 R HRRR 3 km 50 CONUS and Alaska 18h; 00/06/12/18z to 36-h. NWS SCN Still (2020) 24 (CONUS); 8 (Alaska)
2018 R CMAQ 12km 35 CONUS, AK, HI 48h NWS SCN Still (2021) 4
2018 O+G Multi_1 (Wave Model w/WWW3) Various 1/2 deg to 1/12th deg; extend Arctic Ocean grid to NP 1 Global 180h; hourly output to 120h NWS SCN 3/2021 4
2018 O+R NWPS 1.8 km outer grid; optional nests to 500 m N.A. Coastal WFO's 144h NWS SCN Still (2021) 2 or 4, on demand at WFO's
2018 R CCPA 5 km HRAP grid, interpolated to 0.125/0.25/1.0 deg lat/lon, 2.5 and 5km NDFD NA CONUS NA NWS SCN Still 24
2018 Hu HMON; add HYCOM coupling in NATL 18/6/2km ATM=51 NATL, EPAC, CPAC 126h NWS SCN Still (2020) 4
2018 Hu HWRF, add ocean coupling (HYCOM) for SH basins 13.5/4.5/1.5km ATM=75; Ocean=40 All TC basins 126h NWS SCN Still (2020) 4
2018 G+E NAEFS (GEFS+CEFS) 0.5 deg global products; 2.5 km CONUS, 3 km Alaska Global 384h NWS SCN Still 4
2019 IBM x86 + IBM Cray XC40 + Dell C6320 (Mars/Venus); 8.41 petaflops total 6/2022
2019 G GFS, GDAS (FV3 replaces GSM) 13 km 64, model top to 0.2 hPa Global 384h NWS SCN Still (2021) 4
2020 Hu HMON 18/6/2km ATM=71 NATL, EPAC, CPAC 126h NWS SCN Still 4
2020 Hu HWRF, use HYCOM for ocean coupling in JTWC basins 13.5/4.5/1.5km ATM=75; Ocean=40 All TC Basins 126h NWS SCN Still 4
2020 O+G RTGSST_HR (NSST-derived) 1/12th deg NA Global NA NWS SCN Still 1
2020 O+G Global RTOFS (HYCOM, Ocean/Ice anl now from RTOFS-DA) 1/12th deg 41 Global 192h NWS SCN Still 1
2020 R RTMA/URMA/RTMA-RU 2.5 km (AK=3km, PR=1.5km) N.A RTMA, URMA : CONUS, AK; HI, PR; RTMA-only: Guam; RTMA-RU is CONUS only N.A. NWS SCN Still (Last Update**) 24 (RTMA/URMA), 96 (RTMA-RU)
2020 R RAP 12km 50 N. America 21h; 51h for 03,09,15,21z NWS SCN Still (Last update*) 24
2020 R HRRR; HRRR Ensemble DA added for CONUS; HRRR Smoke 3km 50 CONUS, Alaska 18h; 00/06/12/18z to 48-h NWS SCN Still (Last update*) 24
2020 G+E GEFS (FV3 replaces GSM) 25 km; 30+1 mbrs, 64 Global 384h (00z cycle runs to 35 days NWS SCN Still 4
2020 G GEFS-Aerosol (replaces NGAC) 25 km ("32nd" GEFS member 64 Global 120h NWS SCN Still 4
2020 O+E GEFS-wave (coupled to GEFS, replaces GEWS) 0.25 deg, 31 mbrs N.A Global 384h NWS TIN Still 4
2021 G GFS, GDAS (FV3 replaces GSM) 13km 127, model top to 80 km Global 384h NWS SCN Still 4
2021 O GFS-Wave (WAVEWATCH III, coupled to GFS, replaces Multi_1) Polar (50N-90N): 9 km; Global (15S-52.5N): 16 km; Southern Ocean (10.5S-75.5S): 25km N.A. Global 384h NWS SCN Still 4
2021 O+R NWPS Add unstructured grid mesh of 5-200 m for 10 WFO's NA On demand at Coastal WFO's 144h NWS SCN Still 2 or 4, on demand at WFO's
2021 R+E HIRESW/HREF; FV3 replaces NMMB 3-3.2 km 50 (ARW), 60 (FV3) CONUS, AK, HI, PR, Guam 60h for FV3, 48-h for ARW NWS SCN Still 2
2021 R CMAQ (GFS replaces NAM as atmo. driver) 12km 35 CONUS, AK, HI 48h (72h for 06/12z) NWS SCN Still 4
2021 G WAM-IPE (runs GSM) T62 150 (400-600 km model top) Global 48h NWS SCN Still 4
2022 Cray Shasta (12 petaflops)

References