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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.


Estaciones meteorológicas cercanas - Belfast Distancia
Belfast Intl. Airport 38.8 km
Portglenone 70.4 km
Ballypatrick Fst 71.9 km
Glenanne 79.7 km
Machrihanish 94.5 km
Lough Fea 104.6 km
RAF West Freugh 109.4 km
Islay/Port Ellen 126.7 km
Magilligan 133.8 km
Dublin Airport 135.4 km
Eglinton Airport 149.5 km
Isle of Man Airport 150.5 km
Dublin Csmt Aero 156.4 km
Ballyhaise 169.0 km
Prestwick 176.8 km
Malin Head 182.3 km
Castlederg 189.6 km
Thomastown 192.8 km
Mullingar 202.2 km
Glasgow Bishopton 208.8 km
Dundrennan 210.0 km
Valley 212.1 km
Oban Airport 213.4 km
Glasgow Airport 214.4 km
Raf Mona 224.1 km
Oak Park 224.2 km
Tiree Island 237.9 km
Aberdaron 238.6 km
St Bees Head 252.7 km
Finner Camp 262.9 km
Johnstown Castle 264.5 km
Drumalbin 264.6 km
Aonach Mòr 266.0 km
Glen Ogle 266.8 km
Capel Curig 273.5 km
Donegal Airport 278.0 km
Tulloch Bridge 283.7 km
Gurteen 293.5 km
Walney 298.0 km
Waterford Airport 298.6 km
Rhyl 303.3 km
Keswick 303.5 km
Sligo Airport 304.4 km
Strathallan 305.8 km
Eskdalemuir 308.2 km
Aberporth 310.2 km
Bealach na Bà 312.8 km
Bala 317.5 km
Edinburgh Gogarbank 318.8 km
Edinburgh Airport 319.3 km
Carlisle 327.1 km
Blackpool Airport 329.6 km
Trawscoed 330.2 km
Milford Haven 334.5 km
Ireland West Airport 335.6 km
Crosby 336.5 km
Lake Vyrnwy 338.4 km
South Uist Range 344.4 km
Warton Aerodrome Airport 347.2 km
Shap 356.4 km
Claremorris 358.6 km
Benbecula 358.6 km
Hawarden 359.9 km
Pembrey Burrows 361.5 km
Aultbea 362.9 km
Loch Glascarnoch 362.9 km
Liverpool AP 365.8 km
Aviemore 367.7 km
Spadeadam II 374.4 km
Spadeadam 374.4 km
Cairngorms 375.1 km
Sennybridge 377.7 km
Dundee/Riverside 379.5 km
Great Dun Fell 382.3 km
Inverness Airport 385.0 km
Warcop Range 385.9 km
Stonyhurst 389.7 km
Leuchars 389.9 km
Mumbles 397.4 km
Shannon Airport 398.1 km
Stornoway 403.2 km
Roches Point 406.3 km
Redesdale Camp 408.3 km
Charterhall 408.4 km
Shawbury 410.0 km
Rostherne 413.4 km
Tain Air Weapons Range 417.1 km
Cork Airport 419.4 km
Shobdon 423.7 km
Manchester 424.1 km
Kinloss 425.4 km
RM Chivenor 435.1 km
Aboyne 437.3 km
Altnaharra 439.1 km
Credenhill 442.5 km
St Athan 447.1 km
Albemarle 447.9 km
Lossiemouth 448.6 km
Cosford 453.8 km

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