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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.


Najbliższa stacja pogodowa - Porthmadog Odległość
Capel Curig 28.8 km
Raf Mona 47.8 km
Valley 59.3 km
Bala 59.4 km
Trawscoed 66.3 km
Aberdaron 70.2 km
Lake Vyrnwy 74.7 km
Rhyl 77.6 km
Aberporth 100.3 km
Sennybridge 109.6 km
Hawarden 129.2 km
Crosby 133.6 km
Pembrey Burrows 136.1 km
Lotnisko Ronaldsway 141.7 km
Liverpool, Lotnisko 148.4 km
Mumbles 150.6 km
Blackpool Port lotniczy 153.2 km
Shobdon 156.0 km
Shawbury 161.9 km
Walney 164.6 km
Warton Aerodrome Airport 165.3 km
Milford Haven 170.4 km
Credenhill 173.4 km
St Athan 184.2 km
St Bees Head 186.4 km
Cardiff Port lotniczy 189.5 km
Rostherne 199.3 km
RM Chivenor 203.6 km
Cosford 203.9 km
Cosford 203.9 km
Cosford 206.5 km
Manchester 209.7 km
Dundrennan 209.8 km
Stonyhurst 210.0 km
Liscombe 211.6 km
Keswick 216.7 km
Port lotniczy Bristol 230.8 km
RAF West Freugh 234.0 km
Shap 237.5 km
Thorncliffe 238.9 km
North Wyke 240.0 km
Dublin Port lotniczy 244.3 km
Gloucestershire Port lotniczy 245.7 km
Pershore 247.1 km
Dunkeswell Port lotniczy 248.4 km
Exeter Port lotniczy 254.7 km
Carlisle 258.3 km
Dublin Csmt Aero 261.4 km
Warcop Range 263.5 km
Bingley 269.5 km
Yeovil 269.5 km
Great Dun Fell 270.1 km
Birmingham Port lotniczy 270.3 km
Belfast/Harbour 271.1 km
Johnstown Castle 274.5 km
Cardinham 274.9 km
Coleshill 275.1 km
Emley Moor TV Tower 283.4 km
RAF Lyneham 283.9 km
Plymouth MtBatten 284.4 km
Eskdalemuir 284.7 km
Port lotniczy Newquay 291.7 km
Fairford Port lotniczy 293.1 km
Prestwick 293.2 km
Port lotniczy Leeds/Bradford 294.2 km
RAF Little Rissington 294.3 km
Spadeadam 294.3 km
Spadeadam II 294.3 km
Coal Aston Airfield 302.1 km
Glenanne 302.8 km
Drumalbin 302.9 km
Port lotniczy Belfast-International 304.3 km
Oak Park 309.9 km
RAF Brize Norton 310.5 km
East Midlands Port lotniczy 310.6 km
Church Lawford 316.2 km
Nottingham/Watnall 319.1 km
Larkhill 320.8 km
Isle of Portland 324.9 km
Leeming 326.1 km
MoD Boscombe Down 327.5 km
Camborne 328.0 km
Glasgow Port lotniczy 329.9 km
Machrihanish 330.1 km
Redesdale Camp 333.3 km
Port lotniczy Londyn-Oksford 333.7 km
Glasgow Bishopton 335.1 km
Topcliffe 336.1 km
Portglenone 338.5 km
RNAS Culdrose 338.9 km
Ballypatrick Fst 339.5 km
Waterford Port lotniczy 340.4 km
Albemarle 341.4 km
Linton-On-Ouse 342.8 km
Linton-On-Ouse 342.8 km
Middle Wallop 345.2 km
Edinburgh Gogarbank 345.4 km
Edynburg Port lotniczy 347.6 km
Port lotniczy Durham-Tees Valley 347.6 km
Bournemouth 347.6 km