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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 - Sevenoaks Distance
Biggin Hill 18.7 km
Gravesend Broadness 25.4 km
London City Airport 29.9 km
Kenley 30.5 km
Gatwick Airport 42.8 km
St James's Park 43.3 km
Herstmonceux 44.5 km
Charlwood 47.6 km
London Southend Airport 65.8 km
London Stansted Airport 68.9 km
Shoreham Airport 70.9 km
Northolt 73.8 km
Heathrow Airport 74.2 km
Andrewsfield Aerodrome 75.6 km
Shoeburyness 78.0 km
Rothamsted Park 84.6 km
Lydd Airport 90.8 km
Luton Airport 91.1 km
Cambridge 103.9 km
Farnborough 105.8 km
High Wycombe 118.9 km
Woburn 120.7 km
RAF Odiham 125.1 km
Mildenhall Royal Air Force 126.0 km
Cranfield Airport 126.2 km
Wattisham 128.1 km
Bedford 129.2 km
Manston 130.2 km
Langdon Bay 130.7 km
Thorney Island 133.0 km
Lakenheath 134.9 km
Benson 147.3 km
Marham 159.8 km
Wittering 165.3 km
Boulogne-sur-Mer 168.5 km
RAF Holbeach 178.6 km
London Oxford Airport 178.8 km
Le Touquet 180.1 km
Dieppe 180.1 km
Southampton Airport 180.9 km
St. Catherine's Point 181.8 km
Le Havre/Octeville 193.3 km
Middle Wallop 195.2 km
Norwich Weather Centre 196.5 km
Sainte-Adresse 197.1 km
Wainfleet 202.8 km
RAF Brize Norton 203.0 km
Coningsby 205.9 km
Barkston 206.8 km
Church Lawford 207.1 km
Cranwell 210.1 km
Deauville-Saint-Gatien 211.5 km
Deauville-Saint-Gatien AP 212.4 km
Weybourne 213.8 km
MoD Boscombe Down 215.5 km
RAF Little Rissington 218.5 km
Larkhill 220.9 km
Abbeville 222.8 km
Fairford Airport 224.1 km
Waddington 225.4 km
Bournemouth 230.9 km
Rouen/Boos 237.4 km
Dunkirk 240.5 km
Scampton 240.6 km
East Midlands Airport 241.3 km
Caen 242.4 km
MoD Lyneham 243.2 km
Donna Nook 245.7 km
Coleshill 248.0 km
Nottingham/Watnall 250.7 km
Birmingham Airport 250.7 km
Cherbourg - Maupertus Airport 257.3 km
Humberside 264.6 km
Pershore 265.6 km
Gloucestershire Airport 269.5 km
Koksijde 275.5 km
Evreux/Fauville 275.6 km
Doncaster Airport 278.7 km
Coal Aston Airfield 288.8 km
Cap de la Hague 292.0 km
Beauvais/Tille 294.0 km
Leconfield 298.1 km
Ostend Airport 298.8 km
Isle of Portland 304.8 km
Filton 309.2 km
Cosford 313.9 km
Albert Airport 314.4 km
Yeovil 315.0 km
Méaulte 315.4 km
Alencon/Valframbert 315.5 km
Alderney Channel Is 316.5 km
Thorncliffe 316.9 km
Bridlington 317.8 km
Cormeilles 318.5 km
Bristol / Lulsgate 323.1 km
Beitem 329.4 km
Emley Moor transmitting station 332.1 km
Lille Airport 333.0 km
Zeebrugge 336.0 km
Creil 343.3 km