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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 - Epsom and Ewell Distance
Kenley 17.7 km
Charlwood 19.3 km
Gatwick Airport 20.0 km
St James's Park 24.8 km
Heathrow Airport 28.7 km
Northolt 31.4 km
Biggin Hill 31.5 km
London City Airport 39.1 km
Brighton City Airport 53.9 km
Rothamsted Park 55.8 km
Farnborough 57.6 km
Luton Airport 63.5 km
High Wycombe 73.6 km
RAF Odiham 77.8 km
Herstmonceux 78.9 km
London Stansted Airport 82.9 km
Woburn 87.1 km
Thorney Island 93.4 km
Cranfield Airport 93.5 km
Benson 100.3 km
Andrewsfield Aerodrome 101.2 km
Bedford 103.5 km
London Southend Airport 109.0 km
Cambridge 109.5 km
Shoeburyness 122.8 km
Oxford Airport 132.4 km
Southampton Airport 136.2 km
Lydd Airport 138.3 km
Mildenhall Royal Air Force 142.3 km
St. Catherine's Point 142.6 km
Wittering 146.0 km
Middle Wallop 147.7 km
Lakenheath 152.5 km
RAF Brize Norton 155.8 km
Wattisham Airport 161.7 km
Church Lawford 167.2 km
MoD Boscombe Down 167.8 km
RAF Little Rissington 171.6 km
Larkhill 173.0 km
Marham 174.1 km
Fairford Airport 176.2 km
Manston 178.1 km
Holbeach Air Weapons Range 178.6 km
Langdon Bay 179.3 km
Bournemouth 186.0 km
Barkston 187.0 km
Cranwell 192.9 km
RAF Lyneham 195.1 km
Coningsby 196.9 km
Le Havre/Octeville 202.0 km
Sainte-Adresse 205.3 km
Wainfleet All Saints 205.6 km
Coleshill 205.7 km
East Midlands Airport 206.9 km
Birmingham Airport 207.8 km
Waddington 208.1 km
Dieppe 215.2 km
Boulogne-sur-Mer 215.9 km
Nottingham/Watnall 218.6 km
Pershore 219.1 km
Deauville-Saint-Gatien 222.0 km
Gloucestershire Airport 222.1 km
Deauville-Saint-Gatien AP 222.2 km
Scampton 223.3 km
Le Touquet 226.1 km
Norwich Weather Centre 228.1 km
Cherbourg - Maupertus Airport 229.9 km
Weybourne 237.4 km
Caen 238.5 km
Donna Nook 244.4 km
Humberside 252.6 km
Doncaster Airport 254.5 km
Coal Aston Airfield 257.3 km
Cap de la Hague 258.5 km
Isle of Portland 260.6 km
Abbeville 266.7 km
Yeovil 267.6 km
Rouen/Boos 267.9 km
Cosford 269.6 km
Cosford 272.1 km
Cosford 272.1 km
Bristol / Lulsgate 275.0 km
Thorncliffe 278.9 km
Alderney Channel Is 280.8 km
Leconfield 285.6 km
Dunkirk 289.1 km
Credenhill 296.4 km
Emley Moor transmitting station 300.2 km
Evreux/Fauville 303.6 km
Bridlington 310.0 km
Shobdon 311.0 km
Shawbury 315.6 km
Jersey Airport 319.0 km
Manchester 320.1 km
Alencon/Valframbert 323.3 km
Linton-On-Ouse 323.5 km
Leeds Bradford Airport 323.8 km
Koksijde 324.1 km
Rostherne 328.7 km
Bingley 330.9 km