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 - Elmbridge Distance
Heathrow Airport 16.8 km
Northolt 20.7 km
Charlwood 28.1 km
St James's Park 28.8 km
Kenley 29.6 km
Gatwick Airport 30.4 km
Biggin Hill 42.8 km
London City Airport 46.9 km
Farnborough 47.3 km
Rothamsted Park 48.9 km
Luton Airport 56.6 km
Brighton City Airport 59.8 km
High Wycombe 61.3 km
RAF Odiham 67.7 km
Woburn 77.5 km
Cranfield Airport 84.0 km
London Stansted Airport 86.7 km
Benson 88.0 km
Thorney Island 88.5 km
Herstmonceux 91.2 km
Bedford 95.8 km
Andrewsfield Aerodrome 106.8 km
Cambridge 110.1 km
London Southend Airport 118.6 km
Oxford Airport 120.0 km
Southampton Airport 127.9 km
Shoeburyness 132.7 km
St. Catherine's Point 137.1 km
Middle Wallop 137.6 km
Wittering 139.1 km
RAF Brize Norton 143.5 km
Mildenhall Royal Air Force 144.7 km
Lydd Airport 150.6 km
Lakenheath 155.2 km
Church Lawford 155.3 km
MoD Boscombe Down 157.4 km
RAF Little Rissington 159.3 km
Larkhill 162.5 km
Fairford Airport 164.1 km
Wattisham Airport 168.2 km
Marham 175.6 km
Holbeach Air Weapons Range 176.3 km
Bournemouth 177.4 km
Barkston 179.7 km
RAF Lyneham 183.5 km
Cranwell 186.1 km
Manston 189.3 km
Langdon Bay 191.0 km
Coningsby 192.2 km
Coleshill 193.6 km
Birmingham Airport 195.6 km
East Midlands Airport 196.0 km
Waddington 201.2 km
Wainfleet All Saints 203.7 km
Pershore 206.7 km
Nottingham/Watnall 208.2 km
Le Havre/Octeville 209.7 km
Gloucestershire Airport 209.9 km
Sainte-Adresse 212.9 km
Scampton 216.4 km
Dieppe 227.0 km
Cherbourg - Maupertus Airport 228.2 km
Boulogne-sur-Mer 228.2 km
Deauville-Saint-Gatien 229.9 km
Deauville-Saint-Gatien AP 230.2 km
Norwich Weather Centre 233.0 km
Le Touquet 238.5 km
Weybourne 240.6 km
Donna Nook 241.2 km
Caen 243.3 km
Doncaster Airport 245.7 km
Humberside 246.8 km
Coal Aston Airfield 247.0 km
Isle of Portland 252.2 km
Cap de la Hague 254.5 km
Cosford 257.3 km
Yeovil 257.4 km
Cosford 259.7 km
Cosford 259.7 km
Bristol / Lulsgate 263.7 km
Thorncliffe 267.2 km
Alderney Channel Is 275.9 km
Rouen/Boos 279.1 km
Abbeville 279.1 km
Leconfield 279.4 km
Credenhill 284.1 km
Emley Moor transmitting station 289.7 km
Shobdon 298.6 km
Dunkirk 300.8 km
Shawbury 303.2 km
Bridlington 305.0 km
Manchester 308.3 km
Leeds Bradford Airport 313.6 km
Evreux/Fauville 314.4 km
Linton-On-Ouse 314.6 km
Jersey Airport 315.7 km
Rostherne 316.8 km
Bingley 320.2 km
Dunkeswell Airport 326.6 km
Guernsey Airport 330.2 km