NCEP Central Operations

On or around June 28th 2022, NCEP will transition from the first generation of the Weather and Climate Operational Supercomputing System (WCOSS) to the second generation Weather and Climate Operational Supercomputing System (WCOSS-2). Two 24 hour test periods will be run with dissemination of data from WCOSS-2 on June 1st and June 14th.

• June 1, 2022, starting with the 12Z cycle, production data will begin flowing from the new supercomputer. June 2, 2022, starting with the 12Z cycle, production data will revert to the old supercomputer.
• June 14, 2022, starting with the 12Z cycle, production data will begin flowing from the new supercomputer. June 15, 2022, starting with the 12Z cycle, production data will revert to the old supercomputer.

Due to the transition between supercomputing systems, there will be some product changes. These are listed below:

Note: Corrections or additions to this page since the June 1st WCOSS-2 production test are noted in red.

Product Timeliness Changes

• GFS MOS: arriving 8 minutes earlier from WCOSS-2
• NAM MOS: arriving 15 minutes earlier from WCOSS-2
• ESTOFS: arriving 9 minutes later from WCOSS-2
• WSA-ENLIL: arriving 8-12 minutes earlier from WCOSS-2
• PSURGE: arriving 4-8 minutes later from WCOSS-2
• GLWU: arriving 10-15 minutes later from WCOSS-2
• NOSOFS: Timing changes for each domain shown below:
  • Delaware Bay OFS (DBOFS): arriving 5 minutes later from WCOSS-2
  • Cook Inlet OFS (CIOFS): arriving 10 minutes later from WCOSS-2
  • Lake Michigan and Huron OFS (LMHOFS): arriving 5 minutes later from WCOSS-2
  • Delaware Bay OFS (DBOFS): arriving 8 minutes earlier from WCOSS-2
  • Nothern Gulf of Mexico OFS (NGOFS2): arriving 5 minutes earlier from WCOSS-2
  • Columbia River Estuary OFS (CREOFS): arriving 10 minutes earlier from WCOSS-2
• ETSS: arriving 12 minutes earlier from WCOSS-2
• PETSS: arriving 20 minutes earlier from WCOSS-2
• NWM: Medium and long-range forcing arriving 20 minutes earlier from WCOSS-2
• WFS: arriving 15 minutes earlier from WCOSS-2
• IFI: arriving 6 minutes earlier from WCOSS-2
• HRRR: synoptic cycles (00,06,12,18) arrive 5-7 minutes later from WCOSS-2
• HWRF: arriving 10 minutes earlier from WCOSS-2
• HMON: arriving 15 minutes earlier from WCOSS-2
• SEAICE ANALYSIS: arriving 6 minutes earlier from WCOSS-2
• CDAS: arriving 6 minutes earlier from WCOSS-2
• SREF: arriving 6 minutes earlier from WCOSS-2
• AQM: forecast data arriving 5-15 minutes earlier from WCOSS-2
• SPCSREF: arriving up to 13 minutes earlier from WCOSS-2
• CDAS2: arriving 5-8 minutes earlier from WCOSS-2

Product Output Changes

• New "obsproc" directory for observations processed within the GFS, GDAS, NAM, RAP, and RTMA
gfs/prod/gfs.YYYYMMDD/CC/atmos --> obsproc/{ENV}/gfs.YYYYMMDD where CC is cycle, and ENV is both prod and v1.0
gdas/prod/gdas.YYYYMMMDD/CC/atmos --> obsproc/{ENV}/gdas.YYYYMMDD where CC is cycle, and ENV is both prod and v1.0
cdas/prod/cdas.YYYYMMMDD --> obsproc/{ENV}/cdas.YYYYMMDD where ENV is both prod and v1.0
nam/prod/nam.YYYYMMDD --> obsproc/{ENV}/nam.YYYYMMDD where ENV is both prod and v1.0
rap/prod/[rap|rap_p|rap_e].YYYYMMDD --> obsproc/{ENV}/[rap|rap_p|rap_e].YYYYMMDD where ENV is both prod and v1.0
rtma/prod/[rtma2p5_ru|rtma_ru].YYYYMMDD --> obsproc/{ENV}/[rtma2p5_ru|rtma_ru].YYYYMMDD where ENV is both prod and v1.0


• North American Model (NAM) SmartInit
nam/prod/nam.YYYYMMDD -> smartinit/{ENV}/nam.YYYYMMDD where ENV is both prod and v4.4


• UltraViolet Index (UVI)
hourly/prod/uv.YYYYMMDD -> uvi/{ENV}/uvi.YYYYMMDD where ENV is both prod and v1.1


• North American Model (NAM) Model Output Statistics (MOS)
nam/prod/nam_mos.YYYYMMDD -> nam_mos/{ENV}/nam_mos.YYYYMMDD where ENV is both prod and v3.5


• Global Forecast System (GFS) Model Output Statistics (MOS)
gfs/prod/gfsmos.YYYYMMDD -> gfs_mos/{ENV}/gfs_mos.YYYYMMDD where ENV is both prod and v5.3


• High-Resolution Ensemble Forecast (HREF)
hiresw/prod/href.YYYYMMDD -> href/{ENV}/href.YYYYMMDD where ENV is both prod and v3.1


• Climate Forecast System (CFS)
cfs/prod/cfs/cfs.YYYYMMDD -> cfs/{ENV}/cfs.YYYYMMDD where ENV is both prod and v2.3


• Combined NCEP/FNMOC Wave Ensembles (NFCENS)
wave/prod/nfcens.YYYYMMDD -> wave_nfcens/{ENV}/nfcens.YYYYMMDD where ENV is both prod and v1.3


• Great Lakes Operational Forecast System (GLOFS)
nos/prod/glofs.YYYYMMMDD -> glofs/{ENV}/glofs.YYYYMMDD where ENV is both prod and v2.1


• Great Lakes Wave Unstructured (GLWU) System
wave/prod/glwu.YYYYMMMDD -> glwu/{ENV}/glwu.YYYYMMDD where ENV is both prod and v1.1
Files named "what_waveglwu_used.tCCz" is renamed to "what_glwu_used.tCCz" where CC is cycle time


• (Near) Sea Surface Temperature (SST/NSST)
gfs/prod/sst.YYYYMMDD -> nsst/{ENV}/nsst.YYYYMMDD where ENV is both prod and v1.2


• Air Quality Model (AQM)
aqm/prod/aqm.YYYYMMDD -> aqm/{ENV}/cs.YYYYMMDD
aqm/prod/AK.YYYYMMDD -> aqm/{ENV}/ak.YYYYMMMDD
aqm/prod/HI.YYYYMMDD -> aqm/{ENV}/hi.YYYYMMDD
where ENV is both prod and v6.1


• Hurricane Weather Research and Forecasting (HWRF)
hur/prod/hwrf.YYYYMMDDCC -> hwrf/{ENV}/hwrf.YYYYMMDD/CC where ENV is both prod and v13.2


• Hurricanes in a Multi-scale Ocean-coupled Non-hydrostatic model (HMON)
hur/prod/hmon.YYYYMMDDCC -> hmon/{ENV}/hmon.YYYYMMDD/CC where ENV is both prod and v3.2


• Advanced Microwave Sounding Unit (AMSU)
nhc/prod/amsu/amsu.YYYYMMDD -> amsu_estimation/{ENV}/amsu_estimation.YYYYMMDD where ENV is both prod and v1.3


• Sea Ice Drift
omb/prod/seaice_drift.YYYYMMDD -> seaice_drift/{ENV}/seaice_drift.YYYYMMDD where ENV is both prod and v4.1


• Sea Ice Analysis
omb/prod/sice.YYYYMMDD -> seaice_analysis/{ENV}/seaice_analysis.YYYYMMDD where ENV is both prod and v4.5