Actual Weather Reports for the UK and Europe

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Sources of weather actuals around NW Europe.


WARNING!

Noting the great improvements in weather prediction over recent years and the way in which National Weather Service NWP models use all available data - it is debatable whether much use can be made by a sailor of weather actuals, see my page on DIY forecasting A personal, some would say cynical, view is that they are a comfort blanket! Perhaps they are most useful as an aid to monitoring the forecast. Is that front on schedule?

When at sea, the Coast Guard can always be called up on marine VHF. They should have immediate access to the Met Office page of marine weather actuals.


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Observing networks

Weather observations are made for a variety of reasons. Civil and military airfields need a continuous supply of reliable data. Weather services need data for day to day forecasting and climatological purposes. Weather monitoring is necessary for offshore exploration and routine purposes. National weather services usually co-ordinate all these observing systems, This includes monitoring of sites, checking instrument siting and observing practice, collection and quality assurance of the data. Often but not always there is some human component added to measurements from automated instrumentation. These observers have usually received training by professional meteorologists.

Because of the general interest in weather there are many more observing sites using various types of instrument. Mostly, these are fully automatic sites with no monitoring in real time.

In terms of reliability, observations from ”Official" sources will be more reliable than from "Unofficial" sites.


BBC Radio 4 Shipping Forecast

After the late night shipping forecast on Radio 4 LW, 198 kHz, there are about 25 reports from locations around British Isles coasts starting from Tiree. After the early morning forecast there are about 12 station reports. The list do change slightly from time to time as observing locations change. Some stations are manned, others are automatic stations. At the latter there are, currently, no reports of "weather" ie rain, snow etc.

For a nice little read, see Weather Reports from Coastal Stations by Geoff Saunders.

Because of pressures on time available in the BBC schedules and the importance given to the shipping forecasts over and above the actuals, it is very unlikely that the BBC will give more air time for this purpose during the daytime.


NAVTEX 490 kHz

Around the UK, the national NAVTEX service on 490 kHz provides actual reports. For schedules see the NAVTEX page or the MCA Marine Safety Leaflet (a 1.4 Mb PDF).


"Unofficial" Automatic Weather Stations eg CHIMET

There are some automatic weather stations sites at strategic locations such as the Chichester Bar (CHIMET) and on the Bramble Bank, at the entrance to Southampton water. These stations report wind and sea state among other parameters. Just how useful these are to the leisure sailor is a matter of personal opinion. Clearly, it must be useful to the master of a large bulk carrier coming up the Solent to know what the wind is like over the Bramble Bank..

On a slow moving yacht two or three hours off the Chichester Bar, I would be looking at the tide tables and working out the state of tide over the bar for my ETA.

In the event of a strong wind, I would be aiming to arrive with the most favourable tide/wind conditions. A knowledge of wave and wind some few hours off would not help very much. I would be well aware of the wind strength and direction. I would have heard the forecast. In such situations conditions will depend greatly on the time in the tidal cycle. Information of such sort may well not be a good indicator of future conditions even a short time ahead.

Such data are no doubt interesting, but there is no substitute for good seamanship and careful planning. I have given a Listing of "Unofficial" weather sites" around the British isles on another page


Summary

From the above, it can be seen that the Internet is a good source of latest actual data when ashore, in harbour or within mobile phone range of the coast. At sea, the options are the BBC late at night and early morning, NAVTEX 490 kHz and, if really necessary, the Coastguard on VHF.


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