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  2. Ocean Prediction Center - Wikipedia

    en.wikipedia.org/wiki/Ocean_Prediction_Center

    The National Weather Service areas of marine weather forecasting responsibility Wave height analysis from OPC. OPC's Ocean Forecast Branch issues warnings and forecasts in print and graphical formats for up five days into the future. Over 100 forecast products are issued daily.

  3. Gale warning - Wikipedia

    en.wikipedia.org/wiki/Gale_warning

    The National Weather Service issues a similar high wind warning (Specific Area Message Encoding code: HWW) for high winds on land. The criteria vary from place to place; however, in most cases, the warning applies to winds of 40 miles per hour (64 km/h) to 73 miles per hour (117 km/h) for at least 1 hour; or any gusts of 58 miles per hour (93 km/h) to 114 miles per hour (183 km/h) on land.

  4. Small craft advisory - Wikipedia

    en.wikipedia.org/wiki/Small_craft_advisory

    The National Weather Service paid for the visual signals; however, the display stations were operated by other agencies or volunteers. Although the Coastal Warning Display program has been formally discontinued, U.S. Coast Guard and other stations may continue to display warning signals without the direct participation of the National Weather ...

  5. Hazardous seas warning - Wikipedia

    en.wikipedia.org/wiki/Hazardous_seas_warning

    A Hazardous Seas Warning is issued by the National Weather Service of the United States when wave heights and/or wave steepness values reach certain criteria. These criteria are defined by the local forecast office. Such tall waves can pose a serious threat to vessels that do not seek shelter. [1]

  6. List of National Weather Service Weather Forecast Offices

    en.wikipedia.org/wiki/List_of_National_Weather...

    Map of regions covered by the 122 Weather Forecast Offices. The National Weather Service operates 122 weather forecast offices. [1] [2] Each weather forecast office (WFO or NWSFO) has a geographic area of responsibility, also known as a county warning area, for issuing local public, marine, aviation, fire, and hydrology forecasts.

  7. Particularly dangerous situation - Wikipedia

    en.wikipedia.org/wiki/Particularly_dangerous...

    PDS Special marine warnings are issued by the National Weather Service to inform mariners of weather conditions that present a considerable threat to life and property. On April 19, 2018, the Baltimore / Washington, D.C. forecast office upgraded a special marine warning to PDS status as a gust front approached Chesapeake Bay .

  8. Marine weather forecasting - Wikipedia

    en.wikipedia.org/wiki/Marine_weather_forecasting

    These factors can each influence the safety of marine transit. Consequently, a variety of codes have been established to efficiently transmit detailed marine weather forecasts to vessel pilots via radio, for example the MAFOR (marine forecast). [50] Typical weather forecasts can be received at sea through the use of RTTY, Navtex and Radiofax.

  9. Hazardous weather outlook - Wikipedia

    en.wikipedia.org/wiki/Hazardous_Weather_Outlook

    In National Weather Service (NWS) terminology, a Hazardous Weather Outlook is a weather statement issued to provide information of potential severe weather events within the next seven days. The outlook may include information about potential severe thunderstorms , heavy rain or flooding , winter weather, extremes temperatures.

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