Through the implicit use of probability data, color-coded HTI graphics depict the potential conditions to protect against with accompanying descriptions of potential impacts needed for effective preparations. Any departure in the forecast from the actual track, size, or intensity of a hurricane can dramatically change its impacts. Once available, they are updated by respective WFOs with each new forecast issued by the National Hurricane Center (NHC) or Central Pacific Hurricane Center (CPHC) and maintained until the threats of these hazards have locally passed.

hurricane or tropical storm) wind watches and warnings, and/or storm surge watches and warnings, are in effect for at least part of their land area of responsibility. HTI graphics are issued by local Weather Forecast Offices (WFOs) when tropical cyclone (i.e. What are the Hurricane Threats and Impacts (HTI) Graphics? Hurricane Threats and Impacts Graphics FAQ Graphics are for areas subject to active tropical cyclone wind and/or storm surge watches and warnings.

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