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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 - Menai Bridge Distance
Raf Mona 25.1 km
Capel Curig 27.4 km
Valley 42.8 km
Rhyl 72.5 km
Bala 72.7 km
Aberdaron 80.8 km
Lake Vyrnwy 92.0 km
Trawscoed 98.8 km
Isle of Man Airport 110.2 km
Crosby 124.6 km
Woodvale 128.4 km
Aberporth 128.9 km
Hawarden 130.0 km
Blackpool Airport 138.4 km
Sennybridge 140.8 km
Walney 141.5 km
Liverpool AP 145.3 km
Warton Aerodrome Airport 153.2 km
St Bees Head 156.5 km
Pembrey Burrows 168.3 km
Shawbury 171.5 km
Dundrennan 176.8 km
Shobdon 177.8 km
Mumbles 184.2 km
Keswick 190.2 km
Milford Haven 195.9 km
Credenhill 196.1 km
Rostherne 198.1 km
Stonyhurst 199.5 km
RAF West Freugh 201.7 km
Manchester 208.3 km
Shap 216.8 km
St Athan 217.0 km
Cosford 217.7 km
Cardiff Airport 221.8 km
Carlisle 232.4 km
Dublin Airport 235.0 km
Royal Marines Base Chivenor 236.9 km
Thorncliffe 242.3 km
Carlisle Lake District Airport 242.7 km
Warcop Range 244.4 km
Liscombe 244.7 km
Belfast/Harbour 246.5 km
Great Dun Fell 249.8 km
Dublin Csmt Aero 254.3 km
Eskdalemuir 255.0 km
Filton 257.1 km
Bristol Airport 258.8 km
Prestwick 259.8 km
Bingley 262.5 km
Pershore 263.8 km
Gloucestershire Airport 266.5 km
Drumalbin 270.5 km
Spadeadam II 270.6 km
Spadeadam 270.6 km
North Wyke 273.5 km
Emley Moor transmitting station 279.8 km
Belfast Intl. Airport 280.6 km
Dunkeswell Airport 281.2 km
Johnstown Castle 281.3 km
Birmingham Airport 282.2 km
Glenanne 284.8 km
Coleshill 286.4 km
Leeds Bradford Intl. Airport 287.5 km
Exeter Airport 287.8 km
Glasgow Airport 295.9 km
Yeovil 298.6 km
Machrihanish 300.3 km
Glasgow Bishopton 300.9 km
Cardinham 306.8 km
MoD Lyneham 306.9 km
Oak Park 308.8 km
Redesdale Camp 310.5 km
Coventry Airport 311.5 km
RAF Little Rissington 312.9 km
Ballypatrick Fst 312.9 km
Fairford Airport 313.9 km
Edinburgh Gogarbank 313.9 km
Portglenone 314.6 km
Leeming 315.2 km
Edinburgh Airport 316.4 km
East Midlands Airport 316.4 km
Plymouth MtBatten 318.3 km
Newquay Cornwall Airport 322.3 km
Albemarle 322.8 km
Nottingham/Watnall 323.7 km
Topcliffe 326.8 km
Church Lawford 328.7 km
RAF Brize Norton 329.6 km
Linton-On-Ouse 335.5 km
Linton-On-Ouse 335.5 km
Durham Tees Valley Airport 335.6 km
Charterhall 338.9 km
Newcastle Airport 339.4 km
Lough Fea 339.6 km
Larkhill 344.5 km
Waterford Airport 346.2 km
Strathallan 347.4 km
London Oxford Airport 350.6 km
MoD Boscombe Down 351.2 km