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United Kingdom

What are the sources for WeatherOnline forecasts?

The WeatherOnline forecasts are created by using a MOS system developed in-house with the most current US weather services model data (GFS). The statistical methods of the Model-Output-Statistic (MOS)-System were developed in cooperation with the Meteorological Department of the University of Bonn.

What is a MOS-System?

A Model-Output-Statistic (MOS)-System combines the data of the weather forecast model and the locally recorded data for any given point by transforming the model data from a coarse grid to detailed small scale areas.
In order to do so, one needs a large volume of past model forecast data as well as the corresponding recorded data for any given location. The MOS-System relates these two sets of data in an optimized fashion allowing development of the local weather forecast by using the most current model forecast.

What are the time intervals used in the temperature and icons of the local forecasts?

The forecasted maximum temperature always refers to a 12hour window from 6am to 6om local time.
The forecasted minimum temperature always refers to the 12hour window from 6pm of the day before the forecast day to 6 am of the forecast day.
The weather icon for the morning refers to the time between 6am and 12pm local time, the icon for the afternoon is valid from 12am to 6pm local time and the evening icon refers to the time from 6pm to 12am local time.

How often are the current weather conditions and forecasts updated?

The current weather information as well as the satellite images are updated every 30 minutes whereas the radar images are being updated every 15 minutes.
The local weather forecasts as well as the weather charts are updated 8 times a day. The updates start at 2 am CEST or 3 am CEST depending on daylight saving time and continue on a three hourly bases.

Nearby Weather Stations - London WC Distance
St. James's Park 2.2 km
London City Airport 10.6 km
Northolt 22.0 km
Biggin Hill 23.7 km
Kenley 24.1 km
London Heathrow Airport 24.9 km
Gravesend Broadness 28.3 km
Rothamsted Park 36.0 km
Gatwick Airport 41.2 km
Luton Airport 43.1 km
Charlwood 43.7 km
London Stansted Airport 46.8 km
High Wycombe 51.8 km
Farnborough 53.1 km
London Southend Airport 55.7 km
Andrewsfield Aerodrome 55.7 km
Shoeburyness 63.6 km
RAF Odiham 65.9 km
Benson 68.9 km
Cranfield Airport 70.8 km
Herstmonceux 75.8 km
Shoreham Airport 77.1 km
Cambridge 78.5 km
Bedford 82.3 km
RAF Wyton 92.8 km
Lydd Airport 95.7 km
Thorney Island 98.1 km
Wattisham 98.4 km
Manston 102.3 km
Mildenhall Royal Air Force 102.7 km
RAF Brize Norton 105.7 km
Langdon Bay 109.5 km
Middle Wallop 109.9 km
Lakenheath 110.1 km
Solent MRSC 111.5 km
Southampton Airport 113.7 km
RAF Little Rissington 116.0 km
Fairford Airport 117.6 km
MoD Boscombe Down 121.2 km
Larkhill 123.3 km
Wittering 125.0 km
Church Lawford 126.9 km
St. Catherine's Point 133.6 km
Coventry Airport 134.0 km
Marham 134.1 km
RAF Holbeach 151.1 km
Norwich Weather Centre 156.9 km
Barkston 164.5 km
Cranwell 171.0 km
Coningsby 174.5 km
Wainfleet 176.2 km
Waddington 185.8 km