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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 - Dacorum Distance
Rothamsted Park 20.0 km
Luton Airport 22.0 km
Northolt 28.3 km
Woburn 28.8 km
High Wycombe 31.1 km
Heathrow Airport 33.3 km
Cranfield Airport 35.3 km
Bedford 50.4 km
St James's Park 53.4 km
Farnborough 59.7 km
Benson 65.0 km
Kenley 71.2 km
London City Airport 71.4 km
RAF Odiham 74.5 km
Charlwood 77.1 km
Gatwick Airport 78.9 km
Biggin Hill 79.5 km
London Stansted Airport 86.3 km
Oxford Airport 87.9 km
Cambridge 93.2 km
Wittering 94.4 km
Brighton City Airport 107.6 km
Andrewsfield Aerodrome 110.5 km
Church Lawford 110.6 km
Thorney Island 114.5 km
RAF Brize Norton 116.3 km
RAF Little Rissington 129.5 km
Mildenhall Royal Air Force 131.4 km
Barkston 133.6 km
Middle Wallop 134.0 km
Herstmonceux 135.8 km
Southampton Airport 136.4 km
London Southend Airport 138.5 km
Fairford Airport 140.2 km
Cranwell 140.8 km
Lakenheath 142.2 km
Holbeach Air Weapons Range 144.1 km
East Midlands Airport 147.9 km
Coleshill 150.8 km
MoD Boscombe Down 151.0 km
Coningsby 152.1 km
Shoeburyness 153.3 km
Birmingham Airport 153.7 km
Larkhill 154.5 km
Waddington 155.9 km
St. Catherine's Point 156.9 km
Marham 157.0 km
Nottingham/Watnall 159.4 km
RAF Lyneham 165.1 km
Wattisham Airport 170.6 km
Scampton 170.7 km
Wainfleet All Saints 172.2 km
Pershore 172.3 km
Bournemouth 181.4 km
Gloucestershire Airport 181.7 km
Lydd Airport 187.1 km
Doncaster Airport 197.2 km
Coal Aston Airfield 198.2 km
Humberside 203.3 km
Donna Nook 204.9 km
Manston 214.7 km
Cosford 217.4 km
Cosford 219.9 km
Cosford 219.9 km
Langdon Bay 221.2 km
Thorncliffe 221.2 km
Norwich Weather Centre 226.1 km
Weybourne 226.5 km
Leconfield 234.9 km
Emley Moor transmitting station 241.0 km
Bristol / Lulsgate 247.0 km
Yeovil 248.9 km
Isle of Portland 254.7 km
Credenhill 254.8 km
Cherbourg - Maupertus Airport 257.6 km
Le Havre/Octeville 257.9 km
Sainte-Adresse 261.0 km
Manchester 262.7 km
Bridlington 262.9 km
Shawbury 263.9 km
Boulogne-sur-Mer 263.9 km
Leeds Bradford Airport 264.7 km
Linton-On-Ouse 265.9 km
Shobdon 267.0 km
Rostherne 271.6 km
Bingley 271.7 km
Dieppe 273.3 km
Cap de la Hague 276.3 km
Le Touquet 276.8 km
Deauville-Saint-Gatien 278.3 km
Deauville-Saint-Gatien AP 278.5 km
Topcliffe 286.9 km
Caen 287.7 km
Fylingdales 289.8 km
Alderney Channel Is 294.1 km
Leeming 303.1 km
Liverpool AP 311.3 km
Loftus Samos 313.4 km
Hawarden 314.1 km
Stonyhurst 315.0 km