Current Active TCs

All Archived TCs

TC List for Years

Operational HFSA

Operational HFSB

HWRF Legacy

Unlike other NCEP forecast systems which run continuously throughout the year, the hurricane models, e.g. the HMON and HWRF models, are launched for operational use only when NHC/JTWC determines that a disturbed area of weather has the potential to evolve into a depression anywhere over NHC/JTWC's area of responsibility. After an initial HMON or HWRF run is triggered, new runs are launched in cycled mode until the storm either dissipates, becomes extratropical, or degenerates into a remnant low. Currently, the HMON runs in NCEP operations four times daily producing 5-day forecasts of mainly track and intensity to meet NHC operational forecast and warning process objectives.

For the latest NCO operational HMON runs, please go to NCO Tropical Guidance page