Timing: this week’s most prominent wind and wave peaks are expected later on Wednesday well into Thursday and in the course of Friday into Saturday. Also on Sunday there’s a renewed risk of severe weather over parts of the North Sea due to strong winds and high waves. In this volatile setting timing and location might change on rather short notice, so please check your latest forecast for more details.
Operational impacts: dependent on your specific operational limits and geographical location maritime operations will face significant interruptions due to periods of high waves and strong winds. The mobile ridges in between these peaks cause (short) breaks and a few workable windows.
Strong winds on the southern flank of Friday’s low at 16UTC according to GFS. Source: I’mweather.
A first trough, with at its base a minor low, affects the southern North Sea later on Wednesday and on Thursday. Winds likely peak up to gale force with gusts around 45kt and Hs up to 4m. The wind and wave field slowly shifts NNE on Thursday, followed by a mobile ridge with calmer conditions ahead of a next low approaching from the W.
This new low affects the North Sea on Friday, passing the southern parts of the basin later in the day before leaving again on Saturday. On its southern and western flank strong gales (9 Bft) are possible, with gusts exceeding 50kt and Hs up to 5 or 6m regionally. Track is still rather uncertain at the moment. More details will follow in the days leading up to this event. Afterwards a mobile ridge crosses the area, but on Sunday a next stormy low might make its way into the North Sea.
An active (non-tropical) low lingers well offshore of the US east coast at first, expected to swiftly shift NE afterwards later in the week and during the weekend. Strong winds surround the system with peaks up to 7 or 8 Bft. As the low enters the N Atlantic during the weekend quick deepening might occur with possible malicious weather surrounding the core by then. The tropical regions of the Atlantic seem to remain unusually calm at the same time.
As we’ve seen quite a lot this year, the Pacific is much more active, with very strong Typhoon ‘Champi’ slowly shifting WNW towards Taiwan coming days. The system is the 5th super Typhoon globally this year with sustained winds up to 140kt at first; slightly weakening whilst approaching Taiwan on Friday, before making landfall in E China during the weekend. All in the system’s path will face the threat of devastating winds and very high waves, easily over 10m, heavily disrupting maritime operations along the way.
Another tropical disturbance lingers well NNE of Madagascar at the same, expected to slowly shift W coming days. Winds surrounding its centre are much weaker with local peaks up to 6 or 7 Bft, gradually weakening before dissipating later in the weekend whilst entering the waters east of Kenia and Tanzania by then. Generally speaking the system's influence on maritime operations will be limited, besides the thunderstorm risk.
A much more promising disturbance is present over the northern parts of the Guatemala Basin, expected to slowly shift W before curving NNE whilst explosively deepening during the weekend, quickly reaching Typhoon strength by then. The system might affect the coastal areas of W Mexico later on with major impacts on shipping routes there.
Existing customers can monitor the latest operational windows and regional developments in the Infoplaza dashboard. Planning a marine operation without access to our forecasts? Contact Infoplaza to explore how tailored weather intelligence can support safer and more efficient decision-making.