GFS: Global Forecast System 384-Hour Predicted Atmosphere Data

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The Global Forecast System (GFS) is a weather forecast model produced by the National Centers for Environmental Prediction (NCEP). The GFS dataset consists of selected model outputs (described below) as gridded forecast variables. The 384-hour forecasts, with 1-hour (up to 120 hours) and 3-hour (after 120 hours) forecast intervals, are made at 6-hour temporal resolution (i.e. updated four times daily). Use the 'creation_time' and 'forecast_time' properties to select data of interest.

The GFS is a coupled model, composed of an atmosphere model, an ocean model, a land/soil model, and a sea ice model which work together to provide an accurate picture of weather conditions. Note that this model may change; see history of recent modifications to the global forecast/analysis system and the documentation for more information. There may be significant hour-to-hour and day-to-day fluctuations that require noise-reduction techniques to be applied to bands before analysis.

Note that the available forecast hours and intervals have also changed:

  • From 2015/04/01-2017/07/09: 36-hour forecasts, excluding hour 0, at 3-hour intervals.
  • From 2017/07/09-2021/06/11: 384-hour forecasts, at 1-hour intervals from hours 0-120, at 3-hour intervals from hours 120-240, and 12-hour intervals from hours 240-384.
  • From 2021/06/12: 384-hour forecasts, at 1-hour intervals from hours 0-120 and 3-hour intervals from hours 120-384.


27830 meters


Name Units Min Max Description
temperature_2m_above_ground °C -69.18* 52.25*

Temperature 2m above ground

specific_humidity_2m_above_ground Mass fraction 0* 0.03*

Specific humidity 2m above ground

relative_humidity_2m_above_ground % 1* 100.05*

Relative humidity 2m above ground

u_component_of_wind_10m_above_ground m/s -60.73* 59.28*

U component of wind 10m above ground

v_component_of_wind_10m_above_ground m/s -63.78* 59.39*

V component of wind 10m above ground

total_precipitation_surface kg/m^2 0* 626.75*

Cumulative precipitation at surface for the previous 1-6 hours, depending on the value of the "forecast_hours" property according to the formula ((F - 1) % 6) + 1 (and only for assets with forecast_hours > 0).

As a consequence, to calculate the total precipitation by hour X, double-counting should be avoided by only summing the values for forecast_hours that are multiples of 6 plus any remainder to reach X. It also means that to determine the precipitation for just hour X, one must subtract the value for the preceding hour unless X is the first hour in a 6-hour window.

precipitable_water_entire_atmosphere kg/m^2 0* 100*

Precipitable water for entire atmosphere

total_cloud_cover_entire_atmosphere % 0* 100*

Total cloud cover for entire atmosphere (only for assets with forecast_hours > 0)

downward_shortwave_radiation_flux W/m^2 0* 1230*

Downward shortwave radiation flux (only for assets with forecast_hours > 0)

* estimated min or max value

Image Properties

Image Properties

Name Type Description
creation_time DOUBLE

Time of creation

forecast_hours DOUBLE

Forecast hours

forecast_time DOUBLE

Forecast time

Terms of Use

Terms of Use

NOAA data, information, and products, regardless of the method of delivery, are not subject to copyright and carry no restrictions on their subsequent use by the public. Once obtained, they may be put to any lawful use. The forgoing data is in the public domain and is being provided without restriction on use and distribution.


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  • Alpert, J. C., S-Y. Hong and Y-J. Kim: 1996, Sensitivity of cyclogenesis to lower troposphere enhancement of gravity wave drag using the EMC MRF", Proc. 11 Conf. On NWP, Norfolk, 322-323.

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Code Editor (JavaScript)

var dataset = ee.ImageCollection('NOAA/GFS0P25')
                  .filter('2018-03-01', '2018-03-02'));
var temperatureAboveGround ='temperature_2m_above_ground');
var visParams = {
  min: -40.0,
  max: 35.0,
  palette: ['blue', 'purple', 'cyan', 'green', 'yellow', 'red'],
Map.setCenter(71.72, 52.48, 3.0);
Map.addLayer(temperatureAboveGround, visParams, 'Temperature Above Ground');
Open in Code Editor