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 13-km RUC, whose output grids have
this naming convention (all RUC output grids have the same corner points):
ruc2.tHHz.pgrbanl.grib2 (40-km grid, all cycles)
ruc2.tHHz.pgrb20anl.grib2 (20-km grid, all cycles)
ruc2.tHHz.pgrb13anl.grib2 (13-km grid, all cycles)
ruc2.tHHz.pgrbFF.grib2 (40-km grid)
ruc2.tHHz.pgrb20FF.grib2 (20-km grid)
ruc2.tHHz.pgrb13FF.grib2 (13-km grid)
FF=01-12 h (hourly) for HH=00,03,06,09,12,15,18,21
FF=01-09 h (hourly) 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.
| GRID NUMBER |
GRID TYPE |
NAMFIL |
GRID FREQUENCY |
LINKS TO GRID INVENTORY (IF AVAILABLE) |
LINK TO DATA ON NCEP'S FTP SERVER |
| 110 vs. NAM-12 |
0.125 deg lat/lon |
awldas |
3 Hours |
|
|
|
| 209 vs. NAM-12 |
44 Km Lambert Conformal |
awip44 |
3 Hours |
|
|
|
| 211 vs. NAM-12 |
80 Km Lambert Conformal |
awp211 |
6 Hours |
File inventory |
Most recent GRIB2 files (go to "nam.YYYYMMDD" directories) |
|
| 212 vs. NAM-12 |
40 Km Lambert Conformal |
awip3d |
3 Hours |
File inventory (Fcst hours 00,03,15,27,39,51,63,75)
File inventory (All other forecast hours) |
Most recent GRIB2 files (go to "nam.YYYYMMDD" directories) |
|
| 218 vs. NAM-12 |
12 Km Lambert Conformal |
awip12 (2-d surface fields), awphys (3-d pressure level fields) |
3 Hours (awip12): Hourly from 0-36h, 3 Hourly from 39-84 h (awphys) |
File inventory (awip12, Fcst hours 00,03,15,27,39,51,63,75)
File inventory (awip12, All other forecast hours)
File inventory (awphys, Fcst hours 00-08,10-11,13-17,19,20,22-23,25-29,31-32,34-35,39,51,63,75)
File inventory (awphys, All other forecast hours) |
Most recent GRIB2 files (go to "nam.YYYYMMDD" directories) |
Most recent graphics (NCO web page)
Most recent graphics (EMC web page) |
| 221 vs. NAM-12 |
32 Km Lambert Conformal |
awip32 |
3 Hours |
File inventory |
Most recent GRIB2 files (go to "nam.YYYYMMDD" directories) |
Most recent graphics (NCO web page)
Most recent graphics (EMC web page) |
| 104 vs. NAM-12 |
90 Km Polar Stereographic |
grbgrd |
3 Hours |
File inventory |
Most recent GRIB2 files (go to "nam.YYYYMMDD" directories) |
|
| 207 vs. NAM-12 |
95 Km Polar Stereographic |
awp207 |
6 Hours |
|
|
|
| 216 vs. NAM-12 |
45 Km Polar Stereographic |
awipak |
3 Hours |
File inventory |
Most recent GRIB2 files (go to "nam.YYYYMMDD" directories) |
Most recent graphics (NCO web page)
Most recent graphics (EMC web page) |
| 217 vs. NAM-12 |
22.5 Km Polar Stereographic |
awp217 |
3 Hours |
File inventory (Fcst hours 00,03,15,27,39,51,63,75)
File inventory (All other forecast hours) |
Most recent GRIB2 files (go to "nam.YYYYMMDD" directories) |
Most recent graphics (NCO web page)
Most recent graphics (EMC web page) |
| 237 vs. NAM-12 |
32 Km Lambert Conformal |
awp237 |
3 Hours |
|
|
Most recent graphics (NCO web page)
Most recent graphics (EMC web page) |
| 242 vs. NAM-12 |
11.25 Km Lambert Conformal |
awp242 (2-d surface fields only), awak3d (3-d pressure level fields) |
3 Hours |
File inventory (awak3d)) |
See Note 2 |
Most recent graphics (NCO web page)
Most recent graphics (EMC web page) |
| 243 vs. NAM-12 |
0.4 degree lat/lon |
awiphi |
3 Hours |
File inventory |
Most recent GRIB2 files (go to "nam.YYYYMMDD" directories) |
Most recent graphics (NCO web page)
Most recent graphics (EMC web page) |
| 236 vs. NAM-12 |
40 Km Lambert Conformal (RUC) |
See above |
See above |
File inventory (Fcst hours 00,01)
File inventory (Fcst hours 03,04,07,10)
File inventory (Fcst hours 05,06,08,09,11,12) |
Most recent files |
Most recent graphics (NCO web page)
Most recent graphics (ESRL web page) |
| 252 vs. NAM-12 |
20 Km Lambert Conformal (RUC) |
See above |
See above |
File inventory (Fcst hours 00,01)
File inventory (Fcst hours 03,04,07,10)
File inventory (Fcst hours 05,06,08,09,11,12) |
Most recent files |
Most recent graphics (NCO web page)
Most recent graphics (ESRL web page) |
| 255 vs. NAM-12 |
13 Km Lambert Conformal (RUC) |
See above |
See above |
File inventory (Fcst hour 00)
File inventory (Fcst hours 01-12) |
Most recent files |
Most recent graphics (NCO web page)
Most recent graphics (ESRL web page) |
| 4 km HiResWindow grids vs. NAM-12 |
East/Central U.S and West/Central: 4 Km Lambert Conformal
Alaska : 4-km Polar Stereographic
Hawaii/Puerto Rico : 0.045 degree Lat/lon
(All grids are #255)
|
awpreg, awp4km (East CONUS run only) |
Hourly |
Alaska File inventory (awpreg)
West File inventory (awpreg)
East File inventory (awpreg)
Hawaii File inventory (awpreg)
Puerto Rico File inventory (awpreg)
|
Most recent files (go to "hiresw.YYYYMMDD" directories) |
Most recent graphics (NCO web page)
Most recent graphics (EMC web page> |
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)
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