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Whenever a tropical cyclone (a tropical depression, tropical storm, or hurricane) or a subtropical storm has formed in the Atlantic or eastern North Pacific, the NOAA National Hurricane Center (NHC) issues tropical cyclone advisory products at least every 6 hours at 5 am, 11 am, 5 pm, and 11 pm EDT. Similarly, the Central Pacific Hurricane Center (CPHC) issues tropical cyclone advisory products for the central North Pacific at least every 6 hours at 5 am, 11 am, 5 pm, and 11 pm HST. When coastal tropical storm or hurricane watches or warnings are in effect, the NHC and CPHC issue Tropical Cyclone Public advisories every 3 hours. You can find these products on www.hurricanes.gov for the Atlantic and eastern North Pacific or www.weather.gov/cphc for the Central Pacific; on TV, radio, and cell phones; and NOAA Weather Radio. Information on NWS tropical cyclone watch, warning, advisory, and outlook products is detailed below. For more details on all NHC products, see the National Hurricane Center Product User's Guide. Storm information and forecasts specific to your local area can be found from you local Weather Forecast Office (WFO) through www.weather.gov.
Please note that hurricane and tropical storm watches and warnings for winds on land as well as storm surge watches and warnings can be issued for storms that the NWS believes will become tropical cyclones but have not yet attained all of the characteristics of a tropical cyclone (i.e., a closed low-level circulation, sustained thunderstorm activity, etc.). In these cases, the forecast conditions on land warrant alerting the public. These storms are referred to as “potential tropical cyclones” by the NWS.
Hurricane, tropical storm, and storm surge watches and warnings can also be issued for storms that have lost some or all of their tropical cyclone characteristics, but continue to produce dangerous conditions. These storms are called “post-tropical cyclones” by the NWS.
Listen closely to instructions from local officials on TV, radio, cell phones or other computers for instructions from local officials. Evacuate if told to do so.
Tropical Weather Outlook: The Tropical Weather Outlook is a discussion of significant areas of disturbed weather and their potential for development during the next 5 days. The Outlook includes a categorical forecast of the probability of tropical cyclone formation during the first 48 hours and during the entire 5-day forecast period. You can also find graphical versions of the 2-day and 5-day Outlook at www.hurricanes.gov and www.weather.gov/cphc
For the product examples such as the ones listed under this same tab, see out National Hurricane Product site.
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