Category Archives: Weather Routing

Hurricane Force storms over North Atlantic Shipping Lanes

A strong 500 mb jet is setting up west to east across the North Atlantic over the next couple of days near 40N latitude. This will favor strong storm development across the main North Atlantic shipping lanes.  Expecting storm to … Continue reading

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Use of the 500 mb Chart at Sea

The 500mb forecast chart is an excellent tool for mariners to estimate where to anticipate the heaviest sea and swell conditions as well as a guide to the expected surface storm tracks and intensities.  The closer the height contours on … Continue reading

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What is Weather Routing Vs. Vessel Performance Monitoring?

Optimum ship routing is the art and science of developing the “best route” for a ship based on the existing weather forecasts, ship characteristics, ocean currents and special cargo requirements. Vessel performance monitoring services allow a ship operator, owner or charterer to get a daily performance analysis regarding a vessel’s speed and fuel consumption based on the charter-party specifications and the actual weather and currents encountered. Continue reading

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URGENT “Notice to Mariners” – Changes to NOAA marine products effective March 7th, 2018

By Lee Chesneau Lee is a senior marine meteorologist, lecturer, & a graduate from the University of Wisconsin (Madison).   Lee has had a distinguished career with NOAA’s National Weather Service (NWS), NOAA Satellite Service (NESDIS), U.S. Navy Ship Routing Officer … Continue reading

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High Wind and Wave Events Crossing the Gulf Stream

Crossing the Gulf Stream where ocean currents can exceed 2 knots takes some skill and if you try in under certain weather conditions, could be dangerous for any size vessel.  High wind and wave events can occur under certain conditions … Continue reading

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Hurricane Force Storm Forecast for Central North Atlantic

A weak low will move off the USEC near Cape Hatteras Saturday evening then move eastward and deepen rapidly and develop storm to hurricane force winds of 55-70 knots and seas to 9 meters (30 ft) south and southwest of … Continue reading

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Omega Block developing over eastern North Atlantic

The current North Atlantic upper-air pattern is developing  an Omega block over the northeastern North Atlantic. This pattern gets its name because this upper air pattern looks like the Greek letter omega (Ω). Omega blocks tend to have two cut-off … Continue reading

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What is the risk of encountering a tropical storm or hurricane during your Caribbean cruise?

                      Tropical cyclones are storms that originate over tropical and subtropical waters during the summer and fall seasons and are classified as follows: Tropical Depression:A tropical cyclone with maximum sustained … Continue reading

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Storm low over the south-central North Atlantic

A deep 987mb low over the central North Atlantic at 33N latitude is producing winds 35-50 knots with seas to 34 feet (10.4 meters) west of the center.  The low is forecast to slowly drift towards the southeast and gradually … Continue reading

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West Pacific stormtracks may delay westbound shipping

Strong Arctic high pressure building over Siberia eastward will suppress stormtracks far to the south across the western North Pacific during the next several days.  This will likely result in delays to west-bound traffic from the Panama Canal to Far … Continue reading

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