World

United Kingdom



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 - Harlech Distance
Capel Curig 39.1 km
Trawscoed 54.0 km
Raf Mona 58.7 km
Bala 60.6 km
Valley 68.2 km
Aberdaron 68.7 km
Lake Vyrnwy 72.6 km
Rhyl 84.7 km
Aberporth 89.4 km
Sennybridge 98.6 km
Pembrey Burrows 123.4 km
Hawarden 132.6 km
Mumbles 137.8 km
Crosby 140.4 km
Shobdon 150.3 km
Liverpool AP 153.0 km
Isle of Man Airport 153.6 km
Milford Haven 160.3 km
Shawbury 161.4 km
Blackpool Airport 161.6 km
Credenhill 166.8 km
St Athan 172.5 km
Warton Aerodrome Airport 172.9 km
Walney 175.2 km
Cardiff Airport 178.1 km
RM Chivenor 190.6 km
St Bees Head 198.8 km
Liscombe 199.1 km
Cosford 202.4 km
Cosford 202.4 km
Rostherne 202.9 km
Cosford 204.9 km
Manchester 213.0 km
Stonyhurst 216.6 km
Bristol / Lulsgate 221.4 km
Dundrennan 222.7 km
North Wyke 227.1 km
Keswick 228.1 km
Dunkeswell Airport 236.5 km
Gloucestershire Airport 240.0 km
Thorncliffe 240.5 km
Exeter Airport 242.4 km
Pershore 242.9 km
RAF West Freugh 246.0 km
Shap 247.3 km
Dublin Airport 247.6 km
Yeovil 259.4 km
Cardinham 262.3 km
Dublin Csmt Aero 263.8 km
Birmingham Airport 268.1 km
Carlisle 269.7 km
Plymouth MtBatten 271.5 km
Johnstown Castle 271.5 km
Warcop Range 272.7 km
Coleshill 273.2 km
Bingley 274.5 km
RAF Lyneham 276.9 km
Newquay Airport 279.5 km
Great Dun Fell 279.7 km
Belfast/Harbour 280.2 km
Emley Moor transmitting station 287.2 km
Fairford Airport 287.3 km
RAF Little Rissington 289.3 km
Eskdalemuir 296.9 km
Leeds Bradford Airport 299.1 km
Coal Aston Airfield 304.2 km
Spadeadam 304.9 km
Spadeadam II 304.9 km
RAF Brize Norton 305.4 km
Prestwick 306.0 km
Glenanne 309.2 km
Oak Park 309.9 km
East Midlands Airport 310.4 km
Belfast Intl. Airport 312.7 km
Larkhill 313.3 km
Church Lawford 313.9 km
Isle of Portland 314.3 km
Drumalbin 315.7 km
Camborne 316.2 km
Nottingham/Watnall 319.8 km
MoD Boscombe Down 320.0 km
RNAS Culdrose 327.0 km
Oxford Airport 329.2 km
Leeming 332.4 km
Waterford Airport 337.5 km
Middle Wallop 338.0 km
Bournemouth 338.9 km
Machrihanish 341.1 km
Topcliffe 341.8 km
Glasgow Airport 342.8 km
Redesdale Camp 343.7 km
Portglenone 346.9 km
Linton-On-Ouse 347.7 km
Linton-On-Ouse 347.7 km
Glasgow Bishopton 347.9 km
Ballypatrick Fst 349.1 km
Albemarle 350.4 km
Teesside Intl. Airport 354.4 km
Doncaster Airport 354.5 km
Edinburgh Gogarbank 358.0 km