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OPC pressure forecast valid at 48 hours. The Ocean Prediction Center (OPC), established in 1995, is one of the National Centers for Environmental Prediction's (NCEP's) original six service centers. [1] Until 2003, the name of the organization was the Marine Prediction Center. [2] Its origins are traced back to the sinking of the RMS Titanic in ...
Marine weather forecasting is the process by which mariners and meteorological organizations attempt to forecast future weather conditions over the Earth's oceans. Mariners have had rules of thumb regarding the navigation around tropical cyclones for many years, dividing a storm into halves and sailing through the normally weaker and more ...
Referring to the codes above, this may be decoded as follows: MAFOR 0403/: Marine forecast valid from 03 Coordinated Universal Time of the fourth day of the current month. Lake Superior: first 6 hours of the forecast period -wind west at 28 - 33 knots, with rain. Next 12 hours of forecast period - wind northwest 34 - 40 knots, with drizzle.
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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.
The forecast is then followed by a more general weather report, the sign-off, traditionally ending with the presenter wishing the audience a good night, the national anthem "God Save the King" and the closedown of the station for the day, with the BBC World Service taking over the frequencies after the pips of the Greenwich Time Signal at 01:00.
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. [11]
Get the Boydton, VA local weather forecast by the hour and the next 10 days.