OPERATIONAL NORTH AMERICAN MESO : OUTPUT GRID COVERAGE
This web page shows the domains of the various output grids created from the
operational NCEP North American Meso (NAM, formerly Eta) model forecast.
The file naming convention is:
HH=cycle time (00, 06, 12, 18)
FF=forecast hour (00 to 84-h for 00Z/12Z cycles,
00 to 48-h for 06Z/18Z cycles. Output every 3 or 6 h depending on type of grid)
NAMFIL=File name (defined in table)
Also included is the domain of the 20 km RUC, whose output grids have
this naming convention:
ruc2.tHHz.pgrbanl (40-km grid, all cycles)
ruc2.tHHz.pgrb20anl (20-km grid, all cycles)
ruc2.tHHz.pgrbFF (40-km grid)
ruc2.tHHz.pgrb20FF (20-km grid)
FF=01,02,03,06,09,12-h for HH=00,03,06,09,12,15,18,21
FF=01,02,03-h for all other cycles
Click on the grid number below to get a map which shows the grid
domain. The NAM computational domain is shown on each map with dashed lines.
NOTE 1: Grids "awipak", "awip20", "awip12", "awip3d", "awp211", and "grbgrd" are available on the
NWS TOC server
at ftp://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/, once in this
directory click on "MT.nam_CY_HH", where HH=cycle time (00,06,12,18), and
then click on "RD.YYYYMMDD", where YYYY=year, MM=month, DD=day. Then click on
"PT.grid_DF.gr1" which will get you to the NAM GRIB data (finally!)
NOTE 2: Grid "awp242" is also available on the
NWS TOC server
at ftp://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/, once in this
directory click on "MT.nam_AR_ak_CY_HH", where HH=cycle time (00,06,12,18), and
then click on "RD.YYYYMMDD", where YYYY=year, MM=month, DD=day. Then click on
"PT.grid_DF.gr1" which will get you to the NAM GRIB data (finally!)
Click here to get
ASCII files of the latitude/longitude of all points on each output grid listed above. Each list
contains:
I-value,J-value,Latitude (deg N),Longitude (deg W)
Disclaimer
