Click on ‘Weitere GFS Karten’ andXC Weather, originally developed for gliders, combines forecasts based on the GFS model with a network of weather stations for real-time wind data across the country. All you need is a mobile data signal or WiFi and you have the kind of weather data for which our forebears would have given their back teeth.However, with choice comes complexity. Which computer models are they based upon, and are any more accurate than others?Modern forecasts are based on numerical weather prediction (NWP).
Most weather charts will have their origins printed somewhere in a margin, so it’s worth checking to see which of your forecasts can agree.Dr Simon Keeling’s site offers a subscription service: for £65 every six months you get access to all of his unique ‘musings’ videos, which discuss the developing weather, as well as looking at the month ahead, and the long-term trends which will affect the upcoming weather. Current weather observations and forecast. It uses NWW3 and GFS models.
With so many available, which should you choose?
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Nowadays 5 day forecasts are reasonably accurate but treat the last 2 days of any 5 day forecast with caution.
Metmaps Produced in the past by the RYA and Royal Meteorological Society, Metmaps are blank maps and tables you can use to record the information from the … There is no one stop shop or short cut to building the picture which enables you to decide whether or not to go boating.
Numerical weather prediction takes into account all the physical factors driving the atmospheric conditions – the spin of the earth, heating by the sun, topography and the effects of water – and this raw data is fed into enormous supercomputers along with observations from the relevant area.
Whilst pleasing to the eye, easy to read, and offering data for your specific location, you should back these up with sources such as the Met Office latest marine observations, to help identify the likelihood of local variations.Understanding the underlying patterns that drive the weather in your part of the world allows you to understand what is happening when forecasts prove "inaccurate" or unavailable, and make you much less likely to be caught out.
We're sorry, our website requires JavaScript to be enabled so you can browse, shop or access any of your member benefits on our website. These huge volumes of data are crunched by the machines to produce a forecast.In all forecasts, there is much approximation and estimation of the physics. Weather systems do not always develop in the way that the computer models calculate.Forecasts are derived from source data in different ways. Despite claiming accurate forecasts for specific locations such as a headland, they can not give consideration to the effects of that headland, or sea breezes on the local conditions; these need to be considered by the user. If you look hard enough, you will usually be able to find a website which is giving the forecast you want. Using our website with JavaScript disabled might cause unexpected results and areas of the website may not work.Checking the weather forecast before putting to sea is one of our obligations under SOLAS V. It is advisable to cross reference a number of weather sources. Wind and weather forecasts are available on an hourly basis, with windThis website might be written in German, but this site is perhaps the biggest one-stop resource out there. It’s useful to know which model each forecast uses: most, including nearly all GRIB files, use the American GFS model; others include NWW3, WRF, COAMPS, NAVGEM and ECMWF, as well as proprietary models. It’s a great site, which will educate you as well as giving you the forecasts you need.
It’s a little simplified – no gust data can be obtained – but the available data is well presented and easy to read.This Norwegian site displays wind speed in m/s, but is a useful reference: and to get to knots, just double the m/s speed.
COASTAL STATION REPORTS contain actual weather conditions such as wind speed, wind direction, visibility, pressure etc. Our handy guide shows the books & DVDs that go with your course! the forecast.Some online forecasts purely display the computer generated information in an easy to read web page format, however they should be treated with caution. The forecaster then uses other data such as satellite imagery and weather radar and actual measurements to provide their best prediction i.e. This site is protected by reCAPTCHA and the Google
Check the forecast regularly to assess the forecasters' certainty in their predictions. The Shipping forecast is broadcast on Navtex 518kHz twice a day and by the BBC four times a day on Radio 4. The content of the Radio 4 transmission and the frequency bands used, vary depending on the time of the broadcast: (1) Also includes sea area Trafalgar (the area to the south of FitzRoy)Produced in the past by the RYA and Royal Meteorological Society, Metmaps are blank maps and tables you can use to record the information from the shipping forecast and create your own synoptic chart.