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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 - Llandudno Distance
Capel Curig 27.3 km
Rhyl 34.9 km
Bala 52.4 km
Raf Mona 62.6 km
Lake Vyrnwy 74.0 km
Valley 80.1 km
Crosby 85.9 km
Hawarden 94.2 km
Blackpool Airport 100.4 km
Liverpool AP 107.6 km
Walney 109.0 km
Trawscoed 109.0 km
Warton Aerodrome Airport 114.3 km
Aberdaron 118.0 km
Isle of Man Airport 124.5 km
St Bees Head 135.3 km
Shawbury 140.3 km
Sennybridge 140.6 km
Aberporth 155.7 km
Shobdon 157.6 km
Rostherne 159.8 km
Stonyhurst 160.9 km
Keswick 161.8 km
Dundrennan 166.4 km
Manchester 170.7 km
Credenhill 177.7 km
Shap 182.2 km
Cosford 184.3 km
Cosford 184.3 km
Cosford 186.8 km
Pembrey Burrows 187.9 km
Mumbles 195.2 km
Carlisle 203.3 km
Thorncliffe 205.4 km
Warcop Range 208.8 km
RAF West Freugh 211.7 km
Great Dun Fell 215.0 km
St Athan 216.5 km
Cardiff Airport 219.7 km
Bingley 223.9 km
Milford Haven 225.9 km
Eskdalemuir 231.9 km
Pershore 237.1 km
Spadeadam II 238.7 km
Spadeadam 238.7 km
Emley Moor transmitting station 241.5 km
Gloucestershire Airport 243.0 km
Bristol / Lulsgate 247.2 km
Leeds Bradford Airport 248.8 km
Liscombe 249.3 km
RM Chivenor 250.8 km
Birmingham Airport 251.1 km
Coleshill 254.9 km
Drumalbin 255.6 km
Prestwick 258.7 km
Coal Aston Airfield 265.6 km
Belfast/Harbour 270.5 km
Dublin Airport 271.2 km
Leeming 276.7 km
Redesdale Camp 277.8 km
Dunkeswell Airport 280.4 km
East Midlands Airport 282.2 km
North Wyke 283.4 km
RAF Lyneham 286.2 km
RAF Little Rissington 286.5 km
Albemarle 286.8 km
Nottingham/Watnall 287.6 km
Topcliffe 288.1 km
Yeovil 289.2 km
Fairford Airport 289.7 km
Exeter Airport 290.2 km
Dublin Csmt Aero 291.3 km
Glasgow Airport 291.9 km
Edinburgh Gogarbank 294.9 km
Church Lawford 296.5 km
Linton-On-Ouse 296.9 km
Teesside Intl. Airport 297.0 km
Edinburgh Airport 297.1 km
Glasgow Bishopton 298.4 km
Newcastle Intl. Airport 303.2 km
RAF Brize Norton 303.5 km
Belfast Intl. Airport 307.0 km
Charterhall 310.0 km
Doncaster Airport 313.5 km
Machrihanish 314.8 km
Glenanne 315.5 km
Johnstown Castle 319.8 km
Oxford Airport 323.0 km
Larkhill 325.2 km
Cardinham 326.5 km
Plymouth MtBatten 330.6 km
MoD Boscombe Down 331.8 km
Strathallan 333.4 km
Ballypatrick Fst 333.6 km
Boulmer 339.7 km
Portglenone 340.5 km
Newquay Airport 345.1 km
Isle of Portland 346.4 km
Oak Park 347.1 km
Middle Wallop 347.5 km