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Gridded Localized Aviation MOS Program


Information regarding Experimental Gridded LAMP Products on the NWS server


Gridded LAMP products are currently being produced in the NCEP parallel jobstream. The data and images will be made available starting September 28, 2010, with the 1200 UTC cycle. The data will be sent from NCEP to the experimental NDGD area.

Gridded forecast guidance and gridded observations are currently available for the following elements:

  • 2-meter temperature observations and the associated error estimations
  • 2-meter dewpoint temperature observations and the associated error estimations
  • Ceiling height observations
  • Visibility observations
  • 2-meter temperature forecast guidance
  • 2-meter dewpoint temperature forecast guidance
  • Ceiling height forecast guidance
  • Visibility forecast guidance

Additional elements will follow in time.


Notes about the data

Gridded Element Units Special Values
Gridded Obs, Fcsts, and Error Estimates of Temperature, Dewpoint Degrees Kelvin None
Gridded Obs and Fcsts of Ceiling Height Meters Value of -1 in GRIB2 represent EITHER an unlimited ceiling, or a ceiling > 12,000 feet
Gridded Obs and Fcsts of Visibility Meters None


Beginning September 28, 2010, graphical depictions of these products will be available on the LAMP web site http://weather.gov/mdl/gfslamp/gfslamp.shtml and the data in GRIB2 format will be available for download via anonymous ftp or http access from the NWS tgftp server. The details for retrieving the data from the NWS server can be found in the table below.

For details regarding the GRIB2 products see http://www.nws.noaa.gov/mdl/gfslamp/docs/glmpgrib2.php

Experimental Gridded LAMP Products available on NWS server

FTP method:
ftp to tgftp.nws.noaa.gov
username is anonymous
supply your email address for the password

set type binary for GRIB2 data
change directory to what is specified in the table below
get the desired file(s) (specified below)

HTTP method:
Point browser to URL given below (or click on link)

Grid Type

NWS server location

Gridded LAMP Observations


FTP Method:
cd to this directory:
SL.us008001/ST.expr/DF.gr2/DC.ndgd/GT.lmpgfs/AR.conus/RT.HH
where HH=hour of Gridded LAMP observations, 00, 01, 02, ..., 23 in UTC.

HTTP method:

http://weather.noaa.gov/pub/SL.us008001/ST.expr/DF.gr2/DC.ndgd/GT.lmpgfs/AR.conus/
Select RT.HH where HH is the desired hour, then select desired files according to file name descriptions below.


Get the desired files:

  • ds.temp.bin - 2-meter temperature observations
  • ds.utemp.bin - error estimations of temperature analysis
  • ds.td.bin - 2-meter dewpoint temperature observations
  • ds.utd.bin - error estimations of dewpoint temperature analysis
  • ds.cigh.bin - ceiling height observations
  • ds.vis.bin - visibility observations

Gridded LAMP Forecasts


FTP Method:
cd to this directory:
SL.us008001/ST.expr/DF.gr2/DC.ndgd/GT.lmpgfs/AR.conus/VP.001-003

HTTP access:

http://weather.noaa.gov/pub/SL.us008001/ST.expr/DF.gr2/DC.ndgd/GT.lmpgfs/AR.conus/VP.001-003
Select desired files according to file name descriptions below.


Get the desired files:

  • ds.temp.bin - 2-meter temperature LAMP forecasts
  • ds.td.bin - 2-meter dewpoint temperature LAMP forecasts
  • ds.cigh.bin - ceiling height LAMP forecasts
  • ds.vis.bin - visibility LAMP forecasts


For more information, please refer to the Gridded LAMP documentation page.


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National Oceanic and Atmospheric Administration
National Weather Service
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Meterological Development Laboratory
Web site owner: LAMP Webmaster
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Page Last Modified: October 01 2010 20:16:40. UTC