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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.


Estações Meteorológicas Próximas - Grândola Distância
Sines/Montes Chaos 41.0 km
Base Aérea de Beja 73.2 km
Montijo 78.4 km
Beja 79.4 km
Évora 84.5 km
Lisboa/Geof 88.8 km
Lisboa 90.8 km
Aeroporto Humberto Delgado 92.7 km
Alverca do Ribatejo 94.4 km
Base Aérea de Sintra 112.9 km
Sagres 135.3 km
Faro 143.2 km
Portalegre 177.6 km
Monte Real 186.7 km
Huelva 208.8 km
Aeroporto de Badajoz 210.2 km
Coimbra 218.6 km
Castelo Branco 219.8 km
Penhas Douradas 272.6 km
Cáceres 287.0 km
Viseu Airport 291.1 km
Rota 298.2 km
Dos Hermanas Aeroporto 301.0 km
Coria/Tabacoa 301.8 km
Ovar Aeroporto 302.7 km
Ovar 302.8 km
Sevilha 308.9 km
Cádis 311.6 km
Jerez de la Frontera 319.2 km
San Fernando 323.5 km
Porto/Pedras Rubras 337.8 km
Plasencia 345.2 km
Morón de la Frontera 347.1 km
Vila Real Airport 355.3 km
Viana do Castelo 382.4 km
Hinojosa del Duque 386.0 km
Vitigudino 394.8 km
Tangier/Boukhalf Airport 400.4 km
La Hoya 401.2 km
Tarifa 407.8 km
Córdova 415.7 km
Gibraltar 421.7 km
Larache 426.4 km
Ceuta 440.0 km
Vigo/Peinador 445.8 km
Bragança 449.8 km
Sania Ramel Airport 458.9 km
Salamanca 459.4 km
Ourense 465.6 km
Pontevedra 470.2 km
Aeroporto de Málaga-Costa del Sol 483.9 km
Samora 486.2 km
Xexuão 490.5 km
Rabat/Sale Airport 496.4 km
Andújar 501.2 km
Ávila 513.0 km
Santiago de Compostela 518.4 km
Aeroporto de Santiago-Rosalía de Castro 520.1 km
Ponferrada 530.0 km
Benavente 533.4 km
Toledo 537.5 km
Valladolid Airport 569.3 km
Valladolid 572.0 km
Segóvia 583.2 km
Navacerrada 583.4 km
Leão 586.0 km