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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 - Alderney Distance
Alderney Channel Is 0.0 km
Cap de la Hague 29.7 km
Guernsey Airport 54.5 km
Jersey Airport 55.6 km
Cherbourg - Maupertus Airport 81.6 km
Isle of Portland 93.2 km
Bournemouth 125.5 km
Dinard/Pleurtuit 126.9 km
St. Catherine's Point 139.1 km
Saint-Brieuc Armor 150.2 km
Yeovil 150.7 km
Southampton Airport 159.0 km
MoD Boscombe Down 168.9 km
Larkhill 170.9 km
Ploumanac'h 171.8 km
Dunkeswell Airport 172.0 km
Middle Wallop 174.4 km
Exeter Airport 175.8 km
Lannion Airport 177.3 km
Thorney Island 187.5 km
Rennes- Saint-Jacques Airport 190.5 km
Bristol / Lulsgate 194.1 km
RAF Lyneham 200.1 km
Caen 203.6 km
Liscombe 217.7 km
Morlaix/Ploujean 218.6 km
RAF Odiham 219.6 km
North Wyke 222.3 km
Fairford Airport 223.4 km
Plymouth MtBatten 225.3 km
Cardiff Airport 226.0 km
St Athan 232.7 km
Farnborough 236.3 km
RAF Brize Norton 237.5 km
Gloucestershire Airport 242.0 km
Benson 244.7 km
RAF Little Rissington 245.1 km
Brighton City Airport 246.9 km
Laval Airport 247.9 km
Lorient South Brittany Airport 251.8 km
Sainte-Adresse 253.5 km
Landivisiau 254.2 km
Le Havre/Octeville 255.0 km
Oxford Airport 255.4 km
Brignogan-Plages 263.8 km
RM Chivenor 264.9 km
Deauville-Saint-Gatien 266.3 km
Deauville-Saint-Gatien AP 266.4 km
Saint-Nazaire 267.5 km
High Wycombe 268.7 km
Charlwood 270.8 km
Pershore 271.3 km
Groix 271.5 km
Credenhill 271.5 km
Gatwick Airport 275.4 km
Heathrow Airport 276.4 km
Northolt 282.7 km
Guipavas 284.1 km
Mumbles 285.8 km
Cardinham 288.1 km
Shobdon 291.9 km
Le Talut 292.2 km
Quimper 292.3 km
Nantes Atlantique Airport 293.0 km
Alencon/Valframbert 293.2 km
Kenley 293.8 km
Lanvéoc/Poulmic 296.4 km
St James's Park 304.4 km
Sennybridge 305.2 km
Angers 305.2 km
Biggin Hill 306.7 km
Birmingham Airport 308.5 km
Herstmonceux 309.1 km
Church Lawford 309.5 km
Rothamsted Park 310.0 km
Woburn 311.8 km
Coleshill 313.1 km
Luton Airport 315.0 km
Cranfield Airport 315.9 km
Angers 319.0 km
London City Airport 319.6 km
Newquay Airport 321.4 km
Penmarch 321.8 km
Cosford 324.6 km
Cosford 325.4 km
Cosford 325.4 km
Pembrey Burrows 328.0 km
Le Mans/Arnage 332.8 km
Saint-Sauveur 335.9 km
Bedford 337.5 km
Pointe du Raz 338.4 km
RNAS Culdrose 342.8 km
Ushant 345.6 km
Shawbury 346.8 km
La Roche-sur-Yon 347.7 km
Trawscoed 350.9 km
Camborne 351.4 km
East Midlands Airport 359.9 km
London Stansted Airport 362.7 km
Lake Vyrnwy 365.5 km