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Models

stated on the page: nomads.ncep.noaa.govcarriesNOAA NOMADS (NCEP model output)Open data and APIsstated on the page: open-meteo.comredistributesOpen-MeteoOpen data and APIsstated on the page: docs.pirateweather.netredistributesPirate WeatherSites and appsstated on the page: emc.ncep.noaa.govrunsNOAA (NWS, NCEP, NESDIS)Bodiesstated on the page: community.windy.comvisualisesWindySites and appsstated on the page: ventusky.comvisualisesVentuskySites and appsstated on the page: earth.nullschool.netvisualisesearth.nullschool.netSites and appsstated on the page: meteociel.frvisualisesMeteocielSites and appsstated on the page: wetterzentrale.devisualisesWetterzentraleSites and appsstated on the page: tropicaltidbits.comvisualisesTropical TidbitsSites and appsstated on the page: windguru.czvisualisesWindguruSites and appsstated on the page: meteopt.comvisualisesMeteoPTSites and appsstated on the page: wunderground.comtakes as forecast inputWeather UndergroundSites and appsstated on the page: nhc.noaa.govwarns fromUS National Hurricane CenterWarning servicesstated on the page: ncei.noaa.govassimilatesRadiosondes (weather balloons)Observing systemsstated on the page: ncei.noaa.govassimilatesJPSS and NOAA polar orbitersObserving systemsstated on the page: ncei.noaa.govassimilatesSurface weather stations (SYNOP)Observing systemsstated on the page: ncei.noaa.govassimilatesAircraft reports (AMDAR)Observing systemsGFS (NOAA/NCEP)Models

Left: what points at it. Right: what it points at. Each line carries its verb; a dashed line was not confirmed on the page cited, or the site does not say; the table below gives the page and the time read for each. From model-gfs.json

GFS (NOAA/NCEP)

Kept by incident.meteorology@web-summit.dinis, 11 November 2026, 11:36 UTC

Where a forecast comes from · Models · id model-gfs · as data

The Global Forecast System: the United States' global model, four runs a day, outputs in the public domain.

Address: https://www.emc.ncep.noaa.gov/emc/pages/numerical_forecast_systems/gfs.php (leaves this site)

What it is connected to, and who says so

ThisVerbThatThe page that says soReadCheck
GFS (NOAA/NCEP)assimilatesRadiosondes (weather balloons)ncei.noaa.gov: "binary Output Data Format World Meteorological Organization (WMO) Gridded Binary (GRIB) Observation Types Surface Balloon Wind Profiler Aircraft Reports Buoy Radar Satellite Related News May 20, 2026 Rhode Island Receive" The GFS starts from GDAS, the Global Data Assimilation System.11:28 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)assimilatesJPSS and NOAA polar orbitersncei.noaa.gov: "Products Product Grid/Scale Period of Record Model Cycle Output Timestep Data Access Links GDAS Snow, Ice, SST, Satellite, Ship, Aircraft (GRIB and BUFR) 1°x1° 0.5°x0.5° 0.25°x0.25° 01Jan2001–Present (approx. one year to"11:28 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)assimilatesSurface weather stations (SYNOP)ncei.noaa.gov: "(IEEE) binary Output Data Format World Meteorological Organization (WMO) Gridded Binary (GRIB) Observation Types Surface Balloon Wind Profiler Aircraft Reports Buoy Radar Satellite Related News May 20, 2026 Rhode Island "11:28 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)assimilatesAircraft reports (AMDAR)ncei.noaa.gov: "Grid/Scale Period of Record Model Cycle Output Timestep Data Access Links GDAS Snow, Ice, SST, Satellite, Ship, Aircraft (GRIB and BUFR) 1°x1° 0.5°x0.5° 0.25°x0.25° 01Jan2001–Present (approx. one year to present online) "11:28 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)is what NOAA NOMADS (NCEP model output) carriesNOAA NOMADS (NCEP model output)nomads.ncep.noaa.gov: "the column headings for description of each data access method. Data Set freq grib filter https Global Models AIGFS 6 hours - https AIGEFS 6 hours - https GDAS 6 hours grib filter https GDAS 0.25 6 hours grib filter http"11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)redistributed byOpen-Meteoopen-meteo.com: "GFS & RRFS API / Open-Meteo.com Open-Meteo Home Features Pricing API Docs Animations GitHub X Toggle theme GFS & RRFS Forecast API Global GFS model combined with 3-km RRFS"11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)redistributed byPirate Weatherdocs.pirateweather.net: "This API is designed to be a drop in replacement/ alternative to the Dark Sky API, and as a tool for assessing GFS, HRRR and NBM forecasts via a JSON API. This solves two goals: It will also allow legacy applications to "11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)run byNOAA (NWS, NCEP, NESDIS)emc.ncep.noaa.gov: "22, 2021: Implementation of GFS Version 16 in the NCEP Production Suite: GFS v16 Official Evaluation Page The Global Forecast System (GFS) is the cornerstone of NCEP's suite of numerical guidance, providing global atmosp"11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)visualised byWindycommunity.windy.com: "lat/lon (~9 km). The forecast output is produced every three hours for first 144 hours, six hourly through day 10. GFS (Global Forecast System) - the model is operated by the United States' National Weather Service (NWS)"11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)visualised byVentuskyventusky.com: "Satellite Wind speed Wind gusts Clouds Air pressure CAPE Snow cover Humidity Sea Air quality Wind Animation ECMWF, GFS, ICON, GEM Two New High-Resolution Weather Models on Ventusky About us About us Data sources Help Con"11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)visualised byearth.nullschool.netearth.nullschool.net: "data produced by scientists and engineers at government agencies and research labs across the globe Weather Data GFS (Global Forecast System) EMC / NCEP / NWS / NOAA Ocean Currents Data OSCAR v2.0 Earth & Space Research "11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)visualised byMeteocielmeteociel.fr: "Meteociel - Cartes du mod�le num�rique GFS pour l'Europe Accueil - 11076 visiteurs Menu Utilisateur Inscription Se connecter Meteociel Android Meteociel iOS H�berger image Forums Meteociel Tchat m�t�o (4) Temps"11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)visualised byWetterzentralewetterzentrale.de: "Home page wetterzentrale.de Toggle navigation Top Karten Global models GFS ECMWF UKMO GEM ICON ARPEGE NAVGEM JMA Regional models WRF ICON D2 HARMONIE AROME ALARO IRIE Data-driven models AIFS AIGFS GraphCastGEM Other 9-pa"11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)visualised byTropical Tidbitstropicaltidbits.com: "Tidbits Nov 3: NCEP has retired NAM and HiresW mesoscale models , replacing them with RRFS and the REFS Ensemble GFS Run Time: 06Z Nov 11 Global ECMWF EC-AIFS GFS AIGFS CMC ICON JMA Ensemble EPS AIFS-ENS GEFS GEPS Hurric"11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)visualised byWindguruwindguru.cz: "large-scale weather patterns such as jet streams, tropical storms, or systems crossing continents. Examples include GFS (Global Forecast System) and ICON. Local models, on the other hand, focus on smaller geographic area"11:29 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)visualised byMeteoPTmeteopt.com: "MeteoPT.com Comunidade de Meteorologia Português Español English menu_home menu_forum menu_models menu_global GFS ECMWF AIGFS ECMWF-AIFS UKMO ICON ARPÈGE menu_comparator menu_ensemble GEFS ECMWF ENS menu_observation menu" The models menu of the community's home page.11:30 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)is what Weather Underground takes as forecast inputWeather Undergroundwunderground.com: "Pressure Temperature Cloud Cover Humidity Chance of Precipitation Dew Point Forecast input A variety of inputs, including, but not limited to, ECMWF, GFS, and NAM Mostly NAM and GFS Sky Conditions Uses radar and satellit" Listed as "forecast input" to its own system, BestForecast.11:30 UTC, 11 Novstated on the page
GFS (NOAA/NCEP)informs warning byUS National Hurricane Centernhc.noaa.gov: "tropical cyclone (TC) along based on the prevailing flow obtained from a separate dynamical model (either the GFS or the ECMWF). Super Intelligence/Machine Learning (SI/ML) models are trained on reanalysis outputs from d"11:30 UTC, 11 Novstated on the page

Licence: what we may do with it

NOAA / US National Weather Service (GFS, NOMADS, Aviation Weather Center, NHC): US government work: public domain (weather.gov, read 11:30 UTC, 11 Nov, stated on the page).

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