East Pacific:
Hurricane Hilary - 65 knots, Tropical Storm Irwin - 50 knots, Low (Greg) - 25 knots

National Hurricane Center (NHC) Model Data for Low (Greg) - 2017

Early cycle model data on this page was valid as of: Thursday, July 27, 2017 18:00 Z
Late cycle and other previous models were valid as of: Thursday, July 27, 2017 12:00 Z

Release Date:


The center position noted in the map above represents the center location at the time the early cycle models were valid. For many models additional data may be available, such as the forecast wind speed or pressure from that model if it is available. You can access this data by clicking a position icon. Please note that some models do not try to forecast the maximum wind speed and they are not distinguished between the other models that give forecast wind speed. The GFS ensemble members and some global models are examples of this.

Late cycle models are available at the bottom of the model list, if available. Along with the late cycle models, we also include the previous run of an early cycle model if it is not available this run. If any model was not available in the current run or the previous available run, we do not include the model in the map above. Some models may only go out several forecast positions, while others may go out as many as ten days. Since a model forecast beyond five days is usually subject to an increasingly large error, by default the map above displays model data through five days.

Please also remember that these models are not products meant to be interpreted by the public. These models are for educational purposes only. You should always refer to the National Hurricane Center (NHC) for the Atlantic and East Pacific basins or the Central Pacific Hurricane Center (CPHC) for the Central Pacific basin for the latest official forecast.

If you would like to load specific models automatically when you link to this page you can add "&models=HWRF,HMON" for example to the end of the link to load those models. You can add up to 25 models separated by commas.

This page contains global model data downloaded directly from the European Centre for Medium-Range Weather Forecasts. (ECMWF) The publicly accessible (WMO Essential) tropical cyclone trajectory data is processed by our site and integrated into the data on this page using the model identifiers ECMO, ECME and EEXX, where XX represents the ensemble member number. The ECMWF data available through the Global Telecommunications System (GTS) is not included for a particular run on our site if similar ECMWF data for that run exists in the main model file that our site processes from NOAA.