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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 - Arraiolos Distância
Évora 22.2 km
Base Aérea de Beja 72.0 km
Beja 77.4 km
Portalegre 88.8 km
Montijo 116.9 km
Alverca do Ribatejo 118.3 km
Lisboa 127.5 km
Aeroporto Humberto Delgado 128.5 km
Sines/Montes Chaos 129.6 km
Lisboa/Geof 129.9 km
Aeroporto de Badajoz 131.2 km
Castelo Branco 135.2 km
Base Aérea de Sintra 151.5 km
Monte Real 158.6 km
Coimbra 166.8 km
Faro 187.4 km
Penhas Douradas 193.6 km
Huelva 198.6 km
Cáceres 201.5 km
Coria/Tabacoa 213.0 km
Sagres 217.5 km
Viseu Airport 220.8 km
Ovar 252.9 km
Ovar Aeroporto 253.2 km
Plasencia 257.1 km
Dos Hermanas Aeroporto 269.9 km
Sevilha 273.4 km
Vila Real Airport 283.6 km
Porto/Pedras Rubras 287.9 km
Rota 291.8 km
Jerez de la Frontera 304.5 km
Cádis 306.5 km
Vitigudino 307.8 km
La Hoya 313.0 km
Morón de la Frontera 315.3 km
San Fernando 318.1 km
Hinojosa del Duque 319.9 km
Viana do Castelo 333.8 km
Córdova 362.3 km
Bragança 367.7 km
Salamanca 370.6 km
Vigo/Peinador 392.3 km
Samora 398.1 km
Ourense 399.0 km
Tarifa 400.7 km
Tangier/Boukhalf Airport 403.1 km
Gibraltar 408.0 km
Pontevedra 416.0 km
Ávila 425.9 km
Ceuta 430.2 km
Larache 441.3 km
Andújar 442.8 km
Benavente 446.2 km
Ponferrada 449.3 km
Aeroporto de Málaga-Costa del Sol 450.8 km
Cidade Real 453.7 km
Sania Ramel Airport 454.3 km
Toledo 456.5 km
Aeroporto de Santiago-Rosalía de Castro 462.0 km
Santiago de Compostela 462.6 km
Almagro Aeroporto 472.9 km
Jaén 476.3 km
Valladolid Airport 480.5 km
Valladolid 483.2 km
Xexuão 491.8 km
Segóvia 496.4 km
Navacerrada 497.3 km
Granada Aeroporto 497.9 km
Leão 500.1 km
Madrid- Cuatro Vientos Airport 501.8 km
Getafe Air Base 505.7 km
Madrid , University 511.6 km
Madrid , Retiro 514.7 km
Colmenar Viejo Aeroporto 519.3 km
Madrid/Barajas 529.6 km
Rabat/Sale Airport 532.7 km
Madrid- Torrejón Airport 541.2 km
Guadalaxara 576.7 km
Cherif Al Idrissi Airport 603.9 km
Burgos / Villafria 630.7 km
Taza Aeroporto 666.9 km
Nador Intl. Airport 688.9 km