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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 - Llanelli Distance
Mumbles 21.6 km
Pembrey Burrows 24.8 km
RM Chivenor 64.8 km
Aberporth 69.5 km
Sennybridge 74.2 km
Trawscoed 78.5 km
St Athan 84.7 km
Liscombe 89.1 km
Cardiff Airport 94.7 km
Milford Haven 100.3 km
North Wyke 103.7 km
Exeter Airport 132.4 km
Dunkeswell Airport 135.2 km
Aberdaron 139.9 km
Cardinham 141.5 km
Lake Vyrnwy 142.4 km
Plymouth MtBatten 145.7 km
Bala 151.5 km
Shobdon 155.3 km
Credenhill 157.3 km
Capel Curig 161.0 km
Bristol / Lulsgate 162.4 km
Newquay Airport 165.4 km
Raf Mona 178.7 km
Valley 180.9 km
Yeovil 184.4 km
Rhyl 190.7 km
Camborne 206.7 km
Shawbury 207.7 km
Hawarden 211.3 km
RNAS Culdrose 214.5 km
Gloucestershire Airport 222.8 km
Isle of Portland 228.4 km
Cosford 232.1 km
Cosford 232.1 km
Cosford 233.9 km
Liverpool AP 235.0 km
Crosby 236.7 km
RAF Lyneham 240.9 km
Pershore 241.7 km
Fairford Airport 262.7 km
Blackpool Airport 264.8 km
Larkhill 266.7 km
Warton Aerodrome Airport 270.6 km
Johnstown Castle 270.9 km
Rostherne 272.3 km
MoD Boscombe Down 272.9 km
Isle of Man Airport 273.6 km
RAF Little Rissington 274.4 km
Bournemouth 275.9 km
Manchester 279.6 km
Birmingham Airport 282.8 km
RAF Brize Norton 286.5 km
Coleshill 289.2 km
Walney 290.0 km
Thorncliffe 291.0 km
Middle Wallop 293.3 km
Guernsey Airport 302.3 km
Dublin Airport 305.0 km
Stonyhurst 305.1 km
Alderney Channel Is 306.7 km
Scilly St Mary 308.1 km
Dublin Csmt Aero 312.1 km
Oxford Airport 315.6 km
Southampton Airport 317.8 km
St Bees Head 322.2 km
Church Lawford 323.1 km
Ploumanac'h 323.8 km
Cap de la Hague 328.4 km
Brignogan-Plages 331.8 km
Waterford Airport 332.0 km
Lannion Airport 332.8 km
Oak Park 333.0 km
St. Catherine's Point 339.4 km
Benson 339.7 km
East Midlands Airport 339.8 km
Morlaix/Ploujean 342.6 km
Keswick 345.6 km
Jersey Airport 348.2 km
Landivisiau 348.3 km
Bingley 348.5 km
Dundrennan 348.6 km
Emley Moor transmitting station 350.9 km
Coal Aston Airfield 353.3 km
Shap 354.7 km
Nottingham/Watnall 355.4 km
Guipavas 358.3 km
RAF Odiham 359.9 km
RAF West Freugh 364.9 km
Ushant 367.2 km
Leeds Bradford Airport 370.5 km
Thorney Island 371.6 km
High Wycombe 372.9 km
Cherbourg - Maupertus Airport 373.2 km
Warcop Range 375.6 km
Saint-Brieuc Armor 377.0 km
Lanvéoc/Poulmic 377.2 km
Belfast/Harbour 378.2 km
Farnborough 379.0 km
Great Dun Fell 385.0 km