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Track Identifiers

6-10 Day Information

Tropical Cyclone Model Identifier Legend

Ever wonder what the various model identifiers actually mean? This table, adapated from the NHC's ftp site at ftp://ftp.tpc.ncep.noaa.gov/, will hopefully provide the answers you seek. Note that not all identifiers may be shown on a given map, nor may they all still be in active use. I've tried to pare away those that are no longer in use from the list below. A more relevant "operational" listing may be found at http://www.nhc.noaa.gov/verification/verify6.shtml.

Identifier Description
OFCL NHC official forecast
OFCI NHC official forecast (Interpolated 06 hours)
OFC2 NHC official forecast (Interpolated 12 hours)
OHPC HPC official forecast
OOPC OPC official forecast
XTRP Extrapolation using past 12-hr motion
CLIP CLImatology-PERsistance model 3-day
CLP5 CLImatology-PERsistance model 5-day
A90E NHC-90 (early) statistic-dynamic model
A90L NHC-90 (late) statistic-dynamic model
A98E NHC-98 statistic-dynamic model
A9UK NHC-98 (UKMET version)
BAMD Beta and Advection model, deep (NHC)
BAMM Beta and Advection model, medium (NHC)
BAMS Beta and Advection model, shallow (NHC)
LBAR Limited-area Barotropic Model
HWRF HWRF model
HWFI HWRF model (Interpolated 06 hours)
HWF2 HWRF model (Interpolated 12 hours)
GFDL GFDL model
GFDI GFDL model (Interpolated 06 hours)
GFD2 GFDL model (Interpolated 12 hours)
GHMI GFDL model with Intensity adjustment (Interpolated 06 hours)
GHM2 GFDL model with Intensity adjustment (Interpolated 12 hours)
GFDT GFDL using [GFS tracker]
GFTI GFDL using [GFS tracker] (Interpolated 06 hours)
GFT2 GFDL using [GFS tracker] (Interpolated 12 hours)
GTSI GFDL model (Interpolated 06 hours) Test only - DO NOT USE!
GTS2 GFDL model (Interpolated 12 hours) Test only - DO NOT USE!
GFDA GFDL model with Aviation boundary layer parm
GFDE GFDL model with Emmanuel convective parm
GFDC GFDL coupled model
GFCI GFDL coupled model (Interpolated)
GFDN Navy GFDL model
GFNI Navy GFDL model (Interpolated 06 hours)
GFN2 Navy GFDL model (Interpolated 12 hours)
ETA ETA model
ETAI ETA model (Interpolated 06 hours)
ETA2 ETA model (Interpolated 12 hours)
NAM NAM model
NAMI NAM model (Interpolated 06 hours)
NAM2 NAM model (Interpolated 12 hours)
NGM NGM model
NGMI NGM model (Interpolated)
AFW1 MM5 Coarse resolution
AF1I MM5 Coarse resolution (Interpolated 06 hours)
AF12 MM5 Coarse resolution (Interpolated 12 hours)
MM36 Air Force MM5 model
M36I Air Force MM5 model (Interpolated)
COCE COAMPS Carib/E Pacific grid
COEI COAMPS Carib/E Pacific grid (Interpolated 06 hours)
COE2 COAMPS Carib/E Pacific grid (Interpolated 12 hours)
COAL COAMPS Atlantic grid
COAI COAMPS Atlantic grid (Interpolated 06 hours)
COA2 COAMPS Atlantic grid (Interpolated 12 hours)
AVNO GFS Model
AVNI GFS Model (Interpolated 06 hours)
AVN2 GFS Model (Interpolated 12 hours)
AP01 GFS Ensemble +01 member
AP02 GFS Ensemble +02 member
AP03 GFS Ensemble +03 member
AP04 GFS Ensemble +04 member
AP05 GFS Ensemble +05 member
AP06 GFS Ensemble +06 member
AP07 GFS Ensemble +07 member
AP08 GFS Ensemble +08 member
AP09 GFS Ensemble +09 member
AP10 GFS Ensemble +10 member
AP11 GFS Ensemble +11 member
AP12 GFS Ensemble +12 member
AP13 GFS Ensemble +13 member
AP14 GFS Ensemble +14 member
AP15 GFS Ensemble +15 member
AP16 GFS Ensemble +16 member
AP17 GFS Ensemble +17 member
AP18 GFS Ensemble +18 member
AP19 GFS Ensemble +19 member
AP20 GFS Ensemble +20 member
AEMN GFS Ensemble Mean
AEMI GFS Ensemble Mean (Interpolated 06 hours)
AEM2 GFS Ensemble Mean (Interpolated 12 hours)
AMMN GFS New Ensemble Mean
UKM UKMET model (Developmental)
UKMI UKMET model (Interpolated 06 hours)
UKM2 UKMET model (Interpolated 12 hours)
EGRR UKMET model GTS (Official)
EGRI UKMET model GTS (Official - Interpolated 06 hours)
EGR2 UKMET model GTS (Official - Interpolated 12 hours)
NGPS NOGAPS model
NGPI NOGAPS model (Interpolated 06 hours)
NGP2 NOGAPS model (Interpolated 12 hours)
NGX NOGAPS [GFS tracker]
NGXI NOGAPS [GFS tracker] (Interpolated 06 hours)
NGX2 NOGAPS [GFS tracker] (Interpolated 12 hours)
CMC Canadian model
CEMN Canadian model Ensemble Mean
ECM ECMWF model
ECMI ECMWF model (Interpolated 06 hours)
ECM2 ECMWF model (Interpolated 12 hours)
EMX ECMWF model [GFS tracker]
EMXI ECMWF model [GFS tracker] (Interpolated 06 hours)
EMX2 ECMWF model [GFS tracker] (Interpolated 12 hours)
EEMN ECMWF model Ensemble Mean [GFS tracker]
ECMO ECMWF model [GTS tracker]
ECOI ECMWF model [GTS tracker] (Interpolated 06 hours)
ECO2 ECMWF model [GTS tracker] (Interpolated 12 hours)
EEMO ECMWF model Ensemble Mean EPS [GTS tracker]
GUNS Consensus of GFDI, UKMI and NGPI models
GUNA Consensus of AVNI, GFDI, UKMI and NGPI models
CGUN Corrected GUNA Consensus
CONU Consensus of AVNI, GFDI, UKMI, NGPI and GFNI models
CONE Consensus of AVNI, GFDI, UKMI, NGPI, ECMI and GFNI models
CCON Corrected CONU Consensus
SHFR SHIFOR intensity model 3-day
SHF5 SHIFOR intensity model 5-day
DSHF SHIFOR (decay) intensity model
SHIP SHIPS model
DSHP Decay SHIPS model
ICON Intensity Consensus (DSHP+GFDI+HWFI)
HCON Intensity Consensus (GFDI+HWFI+GFNI)
MRCL McAdie Radii CLIPER model
MRCI McAdie Radii CLIPER model (Interpolated)
DRCL DeMaria Radii CLIPER model
DRCI DeMaria Radii CLIPER model (Interpolated)