Model Data

Note: Throughout August 2021 we will be working on updating the links on this page. We're also adding and rearranging content.
For official information on current tropical storms and hurricanes in the North Atlantic and Eastern North Pacific basins, visit the National Hurricane Center. For other basins, visit the World Meteorological Organization's (WMO) site here for links to other official sources.
Contents:

Introduction / Model Names

Some of the links on this page link to model data that meteorologists use to make forecasts. For official information, please consult official sources, such as an official agency responsible for forecasting tropical cyclones or the national weather service of your country for other weather information.

This page has individual sections for some of the global models that forecasters use. Within each section for a global model, we link to the main agency that provides that model data. There might be better sites to view that particular model on. Additional sites to view models on are either in the "Featured Model Sites" or "Other Model Sites" sections. Those sections contain model sites that contain multiple models. For sites in those sections, we list some of the models available on each particular site.

Some models are known by a variety of either informal names and/or abbreviations. This section covers some of the model names and abbreviations that you will see on this page and on some of the sites we link to.

Click here to toggle the list of model names and abbreviations on this page.
For information on most of the models released in the National Hurricane Center's (NHC) Automated Tropical Cyclone Forecasting (ATCF) system, see the section here on this page.

Featured Model Sites

This section features model sites that contain multiple models and/or have features that make the data easier to view. For simplicity, these sites are not included in the sections we have for some of the global models.
  • Forecast Models at Tropical Tidbits
    Site Thumbnail
    Example of GFS model imagery from Tropical Tidbits
    Global model data available.
    Global models:
    NOAA (GFS), ECMWF (IFS / HRES), CMC (GEM / GDPS), U.S. Navy (NAVGEM), DWD (ICON), JMA (GSM)
    Global ensemble models:
    NOAA (GEFS), ECMWF (IFS / EPS), CMC (GEM / GEPS)
    Hurricane models:
    NOAA (HWRF), NOAA (HMON)
    Regional models:
    NOAA ( NAM, HRRR, HRW-FV3* [listed as "FV3 Hi-Res"], WRF-ARW ), CMC ( GEM / RDPS* [listed as "RGEM"], GEM / HRDPS )

    * The "FV3 Hi-Res" is likely the "High-Resolution Window [HIRESW] - Finite-Volume Cubed-Sphere [FV3]" model (HRW-FV3 or HiresW-FV3) based on the HiresW-FV3 having a similar abbreviation and a model that is also available hourly through 60 hours.

    * The "RGEM" is likely "Regional Deterministic Prediction System" (RDPS), a regional version of the Global Environmental Multiscale (GEM) model.

    The model display on this site, and the scope of products you can look at for each model, make this one of the best sites for model data. The imagery is very detailed and the site also has excellent controls to loop model data. You can view model runs from the past week by selecting the drop down box that has the model run time.

    To change the map you are looking at, click the "Regions" button. To select the product you want, click either "Precip/Moisture", "Lower Dynamics", "Upper Dynamics" or "Thermodynamics" to access a menu of products for each.

Global Forecast System (GFS) - NOAA - Global Model - Every 6 Hours

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Example of GFS home page at NOAA/NWS' NCEP.
"The Global Forecast System (GFS) is a global numerical weather prediction system containing a global computer model and variational analysis run by the U.S. National Weather Service (NWS)."

"The GFS is run four times a day, and produces forecasts for up to 16 days in advance. The forecast component uses the FV3 model with a resolution of ~13 km. In the vertical, the model is divided into 127 vertical layers. It produces forecast output every hour for the first 120 hours, then every 3 hours for days 5-16."

You can learn more about the GFS at the National Centers for Environmental Prediction (NCEP) here (where the quotes above come from) or from the Wikipedia article here.

In addition to the GFS, there is also an ensemble system called the Global Ensemble Forecast System (GEFS), previously known as the GFS Global Ensemble. "The Global Ensemble Forecast System (GEFS) is a weather model created by the National Centers for Environmental Prediction (NCEP) that generates 21 separate forecasts (ensemble members) to address underlying uncertainties in the input data such limited coverage, instruments or observing systems biases, and the limitations of the model itself. GEFS quantifies these uncertainties by generating multiple forecasts, which in turn produce a range of potential outcomes based on differences or perturbations applied to the data after it has been incorporated into the model. Each forecast compensates for a different set of uncertainties." (quote from the page here) In September 2020, the ensemble system was expanded from 21 to 31 members. (see PDF file here)
  • Model Analyses and Guidance - National Oceanic and Atmospheric Administration (NOAA)
    Site Thumbnail
    Model Guidance Home page of Model Analyses and Guidance at NOAA/NWS' NCEP.
    Global model data available.
    Model data for the GFS is available from this page at the National Centers for Environmental Prediction (NCEP), part of NOAA's National Weather Service (NWS). Other model data on this site includes the GEFS, NAM and other models, including some that are shorter range models. To access these models, click the "Model Guidance" tab on the main page.

    This site also has HMON and HWRF (worldwide) data for active tropical cyclones. You can access it on the "Tropical Guidance" tab.

    This site takes some getting used to. We'll explain how the "Model Guidance" page works. To access data you must first click "GFS" under "Model Type". Next, you must click a "Model Area". As you move your mouse over each option, it will display what region you can view data for on the map. When you are ready to view data, click the region name. On the next page you will select the type of data you want to view. If you are on a device with a mouse, you can hover your mouse over each product to view a short description of what it is. If you can't do that, or need more information on what it is, click the product. Once you do you will see a "Product Info" button in the top right corner. It will give you more detailed information about what the product is. Once you have selected the product you want, a list of image frames to view, as well as looping options, appear on the page.

    Site Thumbnail
    Example of Simulated Radar Reflectivity Image for the Western North Atlantic from Model Analyses and Guidance page at NOAA/NWS' NCEP
    To actually access the data you want, you can either choose a single frame, which will take you to a page in which you can choose to go to the next or previous frame, or you can instead view a loop which you can animate. If you want to loop all 16 days worth of data, click the "Loop All" text. If you wanted to view a 7 day loop, you would instead choose the "7 Day" text. The looping option also allows you to advance to a the next or previous frame. You can slow or speed up the loop. You can click the "View Image" button if you want to view the actual image you are seeing. (which can then allow you to save it) If you left click on the image you are viewing in the display, it will zoom in on the image. If you right click, it will zoom back out. If on a touch device, you can touch the image to zoom in and use the "Un-Zoom" button to zoom out.

    When navigating through their site, make sure to use their "Back" button rather than your browser's back button. That saves the options you had chose on the previous page you were at.

    We have some direct links to some product types for various regions below.

European Model (Integrated Forecast System, IFS) - ECMWF - Global Model - Every 12 Hours

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Example of ECMWF home page
The Integrated Forecasting System (IFS) is a global model developed at the European Centre for Medium-Range Weather Forecasts (ECMWF). It is also referred to by some as the ECMWF model or the European model.

"The comprehensive Earth-system model developed at ECMWF in co-operation with Météo-France forms the basis for all our data assimilation and forecasting activities. All the main applications required are available through one computer software system called the Integrated Forecasting System (IFS)." (quote from the page here)

In addition to a high-resolution forecast (HRES), an ensemble forecast (ENS) is also available. (ECMWF Ensemble Prediction System [EPS]) "The atmosphere is chaotic, meaning that even small differences in its state can lead to very different weather patterns occurring several days later - this is sometimes referred to as the butterfly effect. To account for the chaotic nature of the atmosphere and the associated uncertainty in prediction, we run an ensemble of 51 forecasts simultaneously; the forecast using the best possible initial state plus 50 other forecasts with slight variations to the initial state. Our ensembles provide a probabilistic forecast which is an estimate of how predictable a particular weather situation is." (quote from the page here)

You can learn more about the IFS from the Wikipedia article here.
  • Site Thumbnail
    Example of charts catalogue page at ECMWF.
    Global model data available.
    This is the main model charts page at ECMWF. This page has a lot of charts to choose from. You can use the options in the left column on the page to filter the number of charts you can choose from.
    • Mean sea level pressure and wind speed at 850 hPa:
      "These charts represent forecasts of Mean Sea Level Pressure (MSLP) and Wind speed at 850 hPa all from the ECMWF high resolution forecast (HRES)."
    • Relative vorticity and wind at 700 hPa:
      "Charts denote HRES output at the 700 hPa level, for regions in the tropics. The brown arrows are wind vectors (legend shows the scale in m/s). The coloured fields denote relative vorticity or divergence; the drop down 'parameter' menu above allows the user to select which one." We link to "Relative vorticity".
    • Geopotential 500 hPa and temperature at 850 hPa:
      "These charts show 500 hPa geopotential height (contours) and temperature at 850 hPa (shading) from the ECMWF HRES model."
    • Rain and mean sea level pressure:
      "These charts show forecasts of Mean Sea Level Pressure (MSLP, that is surface pressure reduced to mean sea level), and 6h or 12h precipitation from the ECMWF HRES model". "MSLP is shown with black contours (isobars every 5 hPa)."
    • Ensemble mean and spread for Mean sea level pressure:
  • Global model data available.
    "ECMWF provides a range of graphical products for tropical cyclone (tropical depressions, tropical storms, hurricanes and typhoons) forecasts."
    • Latest tropical cyclone forecast from IFS
      Site Thumbnail
      Example of ECMWF's latest tropical cyclone forecast page
      "Generated automatically whenever a tropical cyclone is observed (reported via the Global Telecommunication System) at the initial time of the forecast and is present in the high-resolution forecast and/or ensemble (ENS)". The map on the page "shows, as coloured spots, all the latest active tropical cyclones as reported by WMO Regional Specialized Meteorological Centres (RSMCs - the names of these, and their areas of responsibility, are also shown). Clicking on a spot shows what the ECMWF IFS (Integrated Forecast System) predicts the subsequent evolution of that tropical cyclone will be. Areas in the Tropics within which the ECMWF Ensemble (ENS) uses additional initial condition perturbations, specifically targetted on tropical cyclones, are shown as colour rectangles".
    • Tropical cyclone activity from IFS:
      "These products are based on tropical cyclone activity throughout the forecast. They are produced twice a day from the ENS, twice a week for the extended range (month ahead) and once a month for the seasonal forecasts. They give an indication of the potential tropical cyclone activity in the coming days, weeks and months."
      • Tropical cyclone activity (including genesis):
        Site Thumbnail
        Example of ECMWF's tropical cyclone activity (including genesis) page for tropical storms in the Atlantic.
        "This product shows the potential tropical cyclone activity at different time ranges during the forecast. It includes both tropical cyclones that are present at analysis time and those which may develop during the forecast. The maps show the 'strike probability' based on the number of ENS members that predict a tropical cyclone, each member having equal weight. The strike probability is the probability that a tropical cyclone will pass within a 300 km radius from a given location and within a time window of 48 hours."
        Atlantic Ocean: Eastern Pacific:
      • Extended range forecast:
        • "Tropical storm weekly mean frequency and weekly mean Accumulated Cyclone Energy (ACE). The 'Tropical storms' have a relatively large range of wind speed (wind speed higher than 17m/s), so includes storms of hurricane strength. The ACE of a tropical storm is calculated by summing the square of the estimated maximum sustained velocity of every active tropical storm at six-hour intervals. The ACE of a time period is the sum of the ACEs for each storm and takes into account the number, strength, and duration of all the tropical storms in the period. The 51-member ensemble forecast is compared with the model climatology (11-member ensemble over the past 20 years)."
        • Tropical storm probabilities
          "Probability in % that a tropical storm, a tropical depression or an hurricane will strike within 300 km for weekly periods. 'Tropical depressions' includes all tropical cyclones with wind speed higher than 8 m/s, while 'tropical storms' includes all TCs with a wind speed higher than 17 m/s and hurricanes are just those TCs with a wind speed higher than 32 m/s. Probabilities are computed from the 51 members of the real-time monthly forecasts." Conversions: 8 m/s (~15.5 kts), 17 m/s (~33.0 kts), 32 m/s (~62.2 kts)

Canadian Model (Global Environmental Multiscale, GEM) - CMC / Environment Canada - Global Model - Every 12 Hours

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Modelling home page at Environment Canada
Environment Canada's Global Environmental Multiscale (GEM) model is Canada's global model system. The model is sometimes referred to as the CMC which stands for Canadian Meteorological Center. You may also see MSC for Meteorological Service of Canada.

"Analysing and forecasting the weather, using numerical models, requires an impressive amount of computing and data processing power. The process which leads to the production of a forecast can be seen as an endless cycle of data ingestion and analysis. Twice a day, the analysis serves as the starting point upon which atmospheric numerical models base their predictions." (quote from the page here)

There are a variety of model names and acronyms that you might see on various sites for their model systems depending on if it is their deterministic or ensemble system and whether or not it is global or regional.

For deterministic prediction:
  • Global Deterministic Prediction System (GDPS) - About
    "The Global Deterministic Prediction System (GDPS) carries out physics calculations to arrive at deterministic predictions of atmospheric elements from the current day out to 10 days into the future. Atmospheric elements include temperature, precipitation, cloud cover, wind speed and direction, humidity and others. This product contains raw numerical results of these calculations. Geographical coverage is global. Data is available at horizontal resolutions of 25 km and 66 km. Data is available for 28 vertical levels. Predictions are performed twice a day." (quote from the page here)
  • Regional Deterministic Prediction System (RDPS) - About
    "The Regional Deterministic Prediction System (RDPS) carries out physics calculations to arrive at deterministic predictions of atmospheric elements from the current day out to 48 hours into the future. Atmospheric elements include temperature, precipitation, cloud cover, wind speed and direction, humidity and others. This product contains raw numerical results of these calculations. Geographical coverage includes Canada and the United States. Data is available at horizontal resolutions of 10 km. Data is available for 80 vertical levels. Predictions are performed four times a day." (quote from the page here)
  • High Resolution Deterministic Prediction System (HRDPS) - About
    "The High Resolution Deterministic Prediction System (HRDPS) carries out physics calculations to arrive at deterministic predictions of atmospheric elements from the current day out to 48 hours into the future. Atmospheric elements include temperature, precipitation, cloud cover, wind speed and direction, humidity and others. This product contains raw numerical results of these calculations. Geographical coverage of the system is most of Canada. Data is available over specific areas in the MSC Datamart and the whole coverage is available in the MSC GeoMet web services. Data is available at a horizontal resolution of 2.5 km. Data is available for 28 vertical levels. Predictions are performed up to four times a day." (quote from the page here)
For ensemble prediction:
  • Global Ensemble Prediction System (GEPS) - About
    "Global ensemble forecasts are made twice a day using the Canadian GEM model to generate potential weather scenarios up to 16 days. 20 'perturbed' weather forecasts are performed as well as an unperturbed 16-day control forecast. The 20 models have different physics parametrizations, data assimilation cycles and sets of perturbed observations." (quote from the page here)
  • Regional Ensemble Prediction System (REPS) - About
    "The Regional Ensemble Prediction System (REPS) carries out physics calculations to arrive at probabilistic predictions of atmospheric elements from the current day out to 3 days into the future. The probabilistic predictions are based on 20 ensemble members that are perturbed through their initial and boundary conditions as well as physical tendencies. A control member that is not perturbed is also available. Atmospheric elements include temperature, precipitation, cloud cover, wind speed and direction, humidity and others. This product contains raw numerical results of these calculations. Geographical coverage includes Canada and the United States. Data is available at a horizontal resolution of 15 km. Data is available for 48 vertical levels. Predictions are performed twice a day." (quote from the page here)
You can learn more about the GEM model from the Wikipedia article here.

United Kingdom Model (Unified Model, UM) - UK Met Office (UKMET / UKMO) - Global Model - Every 12 Hours for 6 Day Global Deterministic Forecast

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Unified Model home page in the "Research programmes" area of Met Office's website
The global model for the United Kingdom is the Met Office's Unified Model (UM). The model might be abbreviated a variety of ways, including relating to the name of their country and meteorological service, such as UKMET or UKMO.

Note: While Met Office has short term forecast maps on their site here for the UK and weather forecasts for cities around the world, it doesn't seem to have easily viewable data from their Unified Model on their own website. As of updating this section in August 2021, you can access raw data from Amazon Web Services here or get 1GB of data every month for free of "Atmospheric model data" here. To view this model, view some of the other sites on our page that have data from the Unified Model.

"The Unified Model (UM) is a numerical model of the atmosphere used for both weather and climate applications." "Seamless modelling, whereby a single model family can be used for prediction across a range of timescales, has been at the heart of the Met Office strategy for weather and climate prediction since 1990. The Unified Model applies this seamless modelling approach, which means that the same dynamical core and, where possible, the same parameterization schemes are used across a broad range of spatial and temporal scales on a traceable frame work. The model is suitable for numerical weather prediction (NWP), seasonal forecasting and climate modelling with forecast times ranging from a few days to hundreds of years. Furthermore, the Unified Model can be used both as a global and a regional model." (quotes from the Unified Model home page in the "Research programmes" area of Met Office's website)

There are global and regional configurations of the Unified Model for deterministic and ensemble forecasts. Their "Numerical weather prediction models" page in the "Research programmes" area of their website contains information about each of the models. They also have additional information about what the models seem to be called on the UK Met Office page at Amazon Web Services which has information about how the raw model data can be downloaded. It also has a list of parameters for each model.

On this page we refer to the global deterministic model as "Unified Model / Global Atmospheric" (many sites may call it either UKMET or UKMO) and the UK version as "UK Atmospheric". For the ensemble, we use "MOGREPS-G" for global ensemble and "MOGREPS-UK" for UK ensemble.

For deterministic prediction:
  • Met Office Global Atmospheric Hi-Res Model - Deterministic
  • Met Office UK Atmospheric Hi-Res Model (UKV) - Deterministic
For ensemble prediction:
  • Met Office Global and Regional Ensemble Prediction System - Global (MOGREPS-G)
  • Met Office Global and Regional Ensemble Prediction System - UK (MOGREPS-UK)
You can learn more about the Unified Model from the Wikipedia article here.

Navy Global Environmental Model (NAVGEM) - U.S. Navy - Global Model - Every 12 Hours

This model replaced the NOGAPS model in early 2013.

National Centers for Environmental Prediction (NCEP) from NOAA

  • This site has Global Forecast System (GFS) model imagery under "Model Guidance". Other model data includes: North America Mesoscale Model (NAM) and NAM-HIRES, Global Ensemble Forecast System (GEFS), North American Ensemble Forecast System (NAEFS), Short Range Ensemble Forecast Model (SREF), Rapid Refresh Model (RAP), High Resolution Window (HRW) and Wave Watch III Model (WW3). Under "Observations and Analyses" you can also find Real-Time Mesoscale Analysis (RTMA), Upper Air Plots (UAIR) and Skew-T Plots (SKEWT).
  • This site displays models' projected path of low pressure areas all in one image. Once on the site, click the latest time in the left frame. From that you'll see a page full of different regions and models. If you are looking for a storm that doesn't happen to be near North America, such as in the Caribbean or across the Atlantic basin, scroll down the page and there is a table for the Atlantic basin. There are a variety of models to choose from, such as a multiple model, GFS, NCEP Ensemble, NAM, SREF Ensemble, NAVGEM, FNMOC (Fleet Numerical Meteorology and Oceanography Center) Ensemble and CMC (Canadian Meteorological Centre). The images show the path of a low with a line and also display the forecast pressure, which is quite helpful. You can view the text files if you cannot read the pressure on the images.
Visit the Environmental Modeling Center at NCEP for more information and modeling. You can also visit the Climate Prediction Center (CPC) for other information on temperature and precipitation outlooks along with U.S. Drought Information. Two important areas of the CPC include the El Niño - Southern Oscillation (ENSO, also known as El Niño / La Niña - About on Wikipedia) and the Madden - Julian Oscillation. (MJO - About on Wikipedia) For more climate information, visit NOAA's Climate.gov, where you will also find a blog about ENSO.

National Hurricane Center Model Data (displayed by Tropical Globe)

  • Our model site displays National Hurricane Center (NHC) model data in Google Maps and Google Earth for active storms and areas of investigation. (Areas of investigation are designated as invests with numbers from 90 to 99.) You can also view model wind and pressure data, when available, in interactive charts. All best track and model data is archived so you can view historic data as well. Other features of our model system include NHC model error, a center fix system containing raw center fixes by satellite and other sources and model data for the East and Central Pacific basins. For active Atlantic storms, links to each storm's data will appear at the top of most of the pages on our site.

    If you have the free program Google Earth, you can access all model data in the Atlantic Basin by saving the Google Earth file below: This file will allow you to view the latest model data when it is available for active storms and areas of investigation. NHC best track, model and fix data come from the Automated Tropical Cyclone Forecasting (ATCF) system. Raw ATCF data is downloaded here from the NHC's FTP server and is processed by our site to be displayed visually when new data is available.

    For a nice background to display Google Earth data on, click here for NASA Blue Marble imagery for Google Earth.

    For information about other basins, visit Tropical Globe.

National Digital Forecast Database (NDFD) Graphical Forecasts from NOAA

  • The National Hurricane Center has incorporated their NHC/TAFB Experimental Gridded Marine Forecasts into the proposed replacement of the National Weather Service Graphical Forecast Page. Select "Oceanic" as the geographic region and next to it select the forecast element you want to view, such as wind speed or wave heights. You can use the slider to view a different time period. You can learn more about how to use the interface here. You can view more information here on the NHC's site about the addition.

Hurricane Forecast Improvement Program (HFIP)

More Model Data

  • Tropical Cyclone Storm Tracks from NOAA's Hurricane Forecast Improvement Program
    Global model ensembles (ECMWF, GFS, Canadian, UKMET, FNMOC), NHC model data, HAFS (experimental) and others.
    This experimental display, using Google Maps, contains model data for tropical cyclones around the world. It allows you to view global model ensemble members and means. It also contains some model data from the NHC's ATCF system. The options allow you to view the model names and color coded intensity on the model lines.
  • GFS, CMC, UKMET, NAVGEM, JMA, HWRF, HMON.
    This site goes into more depth about the forecast track of lows. It shows you the line where the center is expected to travel along with some pressure and other data expected at the core. The phase diagrams are a very valuable resource to look at to learn more about the core of potential and current storms. For information about how to interpret them, click here.
  • Tropical Cyclone Guidance from by Brian Tang at University at Albany
    Site Thumbnail
    Example of Brian Tang's Tropical Cyclone Guidance home page at University at Albany
    Global models:
    NOAA (GFS), ECMWF (IFS / HRES), CMC (GEM / GDPS), UKMET (Unified Model / Global Atmospheric), U.S. Navy (NAVGEM)
    Global ensemble models:
    NOAA (GEFS), ECMWF (IFS / EPS), CMC (GEM / GEPS), UKMET (Unified Model / MOGREPS-G)
    Hurricane models:
    NOAA (HWRF), NOAA (HMON), and others

    Site Thumbnail
    Example of GFS track trends for an invest in the East Pacific
    This site has storm specific data, including track and intensity, for tropical cyclones globally. It has models from the NHC, as well as others, and includes some global model ensembles.

    It also features track and intensity trends for NOAA (GFS), ECMWF (IFS / HRES), CMC (GEM / GDPS), UKMET (Unified Model / Global Atmospheric), HWRF, HMON and others using previous runs. For track trends, the current run and previous runs are mapped on the same image, as well as the storm's actual positions.
  • Site Thumbnail
    Example of Sea Level Pressure forecast imagery for the GFS from FSU's site
    Global models:
    NOAA (GFS), ECMWF (IFS / HRES), CMC (GEM / GDPS), U.S. Navy (NAVGEM),
    Global ensemble models:
    ECMWF (IFS / EPS Mean)
    Hurricane models:
    NOAA (HWRF), NOAA (HMON)

    In addition to this part of the site and the cyclone phase diagrams, you can also visit some more experimental areas of the site, subject to availability. (Tropical Cyclone Track Probability for landfalls based on historical data and Tropical Cyclone Genesis Probabilities)
  • MeteoCentre.com - Hosted at the Université du Québec à Montréal (UQAM)
    Site Thumbnail
    Example of MeteoCentre.com's ECMWF-HRES imagery for North America
    Global models:
    NOAA (GFS), ECMWF (IFS / HRES), CMC (GEM / GDPS), UKMET (Unified Model / Global Atmospheric), DWD (ICON), JMA (GSM), Meteo-France (ARPEGE)
    Global ensemble models:
    NOAA (GEFS), CMC (GEM / GEPS)
    Regional models:
    NOAA (NAM, SREF), CMC ( GEM / RDPS, GEM / REPS )

    Site Thumbnail
    Example of "Extra-Tropical and Tropical Cyclone Automated Tracking" from CMC (GEM / GDPS) for MSLP in North America on MeteoCentre.com's site
    This site also has a lot of other various data, including surface data, satellite, radar, lightning and other data.

    Their imagery is mostly focused on either North America or Europe and not specifically on the tropics. You can view their Northern Hemisphere imagery for a very wide view of much of the Atlantic basin.

    For tropical cyclones, this site is best to use for storms near the Contiguous U.S. or Canada.
  • Tropical Cyclone Guidance Project (TCGP) at National Center for Atmospheric Research (NCAR)
    This site has select NHC model data plotted on images as well as model intensity data charted. It also has an archive of imagery, the latest SHIPS text output for a storm and links to other content.
  • e-WALL - The Electronic Map Wall at Pennsylvania State University (PSU)
    GFS, CMC and other models and data, including satellite imagery. Some ECMWF and UKMET model data is also available.

    Click here for Tropical Atlantic e-WALL. (Notice in the left column the satellite views, including floaters.)
  • Text model data from the National Hurricane Center
    • https://ftp.nhc.noaa.gov/atcf/stext/ - This folder contains a very detailed SHIPS output. The latest files, like the text model data folder, are at the bottom. Or, you can save this link which has the latest files at the top.
    • https://ftp.nhc.noaa.gov/atcf/aid_public/ - The compressed files in this folder contain the raw text data that Tropical Atlantic processes to present on our site. The easiest way to view this data is the processed output that we or another site generates.
  • Various Other Sites

About Models

  • This page from the National Hurricane Center explains some of the different models used in forecasting hurricanes. It explains the differences between dynamical, statistical and statistical-dynamical models, explains the difference between early and late cycle models, as well as provides detailed tables about some of the models they use. It contains information about what particular ensemble members might exist in a consensus model. The page may not always be up to date, so be sure to check the date the information was last updated.

    Annual NHC verification reports also contain additional model information. You may find information about what ensemble members existed in a consensus model in the past.

    For a more complete listing of most model names that are used in the ATCF system, check the NHC's "techlist" files here. Our site has a model listing page here that combines some of the information from these sources.
  • We directly link above to the answer on the page to the question "What Are the Current Hurricane Track and Intensity Models?". You'll find a lot of other informative information on that Frequently Asked Questions page.
Page last modified on August 03, 2021