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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 - Carmarthen Distance
Pembrey Burrows 0.0 km
Mumbles 45.8 km
Aberporth 51.3 km
RM Chivenor 74.3 km
Milford Haven 76.1 km
Trawscoed 83.8 km
Sennybridge 92.1 km
St Athan 109.3 km
Liscombe 110.6 km
North Wyke 117.6 km
Cardiff Airport 119.3 km
Aberdaron 125.2 km
Cardinham 138.9 km
Lake Vyrnwy 152.3 km
Exeter Airport 152.6 km
Plymouth MtBatten 153.6 km
Dunkeswell Airport 157.4 km
Newquay Airport 157.9 km
Bala 158.4 km
Capel Curig 161.0 km
Valley 171.2 km
Raf Mona 171.3 km
Shobdon 175.5 km
Credenhill 179.1 km
Bristol / Lulsgate 187.1 km
Rhyl 196.1 km
Camborne 197.1 km
RNAS Culdrose 206.4 km
Yeovil 208.7 km
Hawarden 222.8 km
Shawbury 224.3 km
Crosby 245.3 km
Johnstown Castle 246.2 km
Gloucestershire Airport 246.3 km
Liverpool AP 246.5 km
Cosford 251.3 km
Cosford 251.3 km
Isle of Portland 251.6 km
Cosford 253.3 km
Pershore 264.2 km
Isle of Man Airport 264.3 km
RAF Lyneham 265.4 km
Blackpool Airport 272.2 km
Warton Aerodrome Airport 279.4 km
Dublin Airport 283.1 km
Rostherne 286.6 km
Fairford Airport 286.9 km
Dublin Csmt Aero 289.3 km
Larkhill 291.4 km
Scilly St Mary 293.5 km
Walney 294.1 km
Manchester 294.5 km
MoD Boscombe Down 297.6 km
RAF Little Rissington 298.1 km
Bournemouth 300.5 km
Birmingham Airport 304.3 km
Waterford Airport 307.3 km
Thorncliffe 308.4 km
Oak Park 308.7 km
RAF Brize Norton 310.5 km
Coleshill 310.6 km
Stonyhurst 316.3 km
Middle Wallop 318.0 km
Guernsey Airport 321.0 km
St Bees Head 322.1 km
Alderney Channel Is 328.0 km
Ploumanac'h 335.5 km
Brignogan-Plages 336.7 km
Oxford Airport 339.4 km
Southampton Airport 342.5 km
Lannion Airport 344.4 km
Dundrennan 345.0 km
Church Lawford 345.3 km
Keswick 348.9 km
Cap de la Hague 350.4 km
Morlaix/Ploujean 351.4 km
RAF West Freugh 354.4 km
Landivisiau 354.6 km
East Midlands Airport 360.2 km
Belfast/Harbour 361.5 km
Shap 361.6 km
Guipavas 362.6 km
Bingley 362.8 km
St. Catherine's Point 363.9 km
Benson 364.0 km
Glenanne 366.3 km
Ushant 366.7 km
Emley Moor transmitting station 367.0 km
Jersey Airport 367.9 km
Coal Aston Airfield 371.5 km
Nottingham/Watnall 375.2 km
Lanvéoc/Poulmic 381.3 km
Warcop Range 383.9 km
RAF Odiham 384.6 km
Leeds Bradford Airport 385.4 km
Belfast Intl. Airport 386.7 km
Mullingar 389.6 km
Carlisle 390.1 km
Saint-Brieuc Armor 391.9 km
Great Dun Fell 392.7 km