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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.


Estaciones meteorológicas cercanas - Sintra Distancia
Sintra Air Base — inglês 4.6 km
Lisboa aeropuerto 25.8 km
Lisboa/Geof 25.8 km
Lisboa 26.9 km
Alverca do Ribatejo 38.2 km
Montijo 38.7 km
Sines/Montes Chaos 108.7 km
Monte Real 125.7 km
Évora 165.9 km
Coímbra 179.1 km
Base Aérea de Beja 180.5 km
Beja 187.5 km
Sagres 203.2 km
Portalegre 223.5 km
Castelo Branco 238.5 km
Ovar Aeropuerto 246.1 km
Ovar 246.6 km
Faro 250.6 km
Viseu Airport 267.9 km
Penhas Douradas 269.4 km
Oporto/Pedras Rubras 278.1 km
Badajoz aeropuerto 284.0 km
Viana do Castelo 317.8 km
Huelva 320.7 km
Vila Real Airport 328.5 km
Coria/Tabacoa 339.7 km
Cáceres 345.6 km
Vigo/Peinador 384.4 km
Plasencia 390.1 km
Vitigudino 408.2 km
Pontevedra 408.7 km
Dos Hermanas Aeropuerto 409.2 km
Rota 411.1 km
Sevilla 415.6 km
Orense 423.2 km
Cádiz 424.6 km
Jerez de la Frontera 431.4 km
San Fernando 436.4 km
Braganza 441.9 km
La Hoya 443.8 km
Morón de la Frontera 455.4 km
Santiago de Compostela 457.2 km
Santiago-Rosalía de Castro aeropuerto 462.0 km
Hinojosa del Duque 474.1 km
Salamanca 491.5 km
Zamora 503.4 km
Tangier/Boukhalf aeropuerto 513.2 km
Ponferrada 515.1 km
Tarifa 520.8 km
Gibraltar 534.3 km
Larache 537.3 km
Benavente 543.3 km
Ceuta 552.9 km
Tetuán-Sania Ramel aeropuerto 571.9 km
León 587.8 km
Rabat/Sale aeropuerto 598.2 km
Chauen 603.3 km