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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 - Barreiro Distance
Montijo 5.2 km
Lissabon/Geof 10.8 km
Lisbon 12.9 km
Lisbon Airport 14.8 km
Alverca do Ribatejo 24.1 km
Sintra Air Base — inglês 35.3 km
Sines/Montes Chaos 81.9 km
Monte Real 129.9 km
Évora 130.7 km
Beja Airbase 144.1 km
Beja 151.1 km
Coimbra 176.3 km
Sagres 183.7 km
Portalegre 195.8 km
Castelo Branco 218.1 km
Faro 219.1 km
Badajoz Airport 251.6 km
Ovar Airport 251.8 km
Ovar 252.1 km
Penhas Douradas 256.2 km
Viseu Airport 261.3 km
Huelva 284.6 km
Porto/Pedras Rubras 285.5 km
Coria/Tabacoa 315.8 km
Cáceres 316.8 km
Vila Real Airport 324.1 km
Viana do Castelo 327.6 km
Plasencia 364.9 km
Dos Hermanas Airport 372.7 km
Rota 375.4 km
Seville 379.2 km
Cádiz 389.1 km
Vitigudino 391.8 km
Vigo/Peinador 393.4 km
Jerez de la Frontera 395.3 km
San Fernando 400.9 km
Pontevedra 417.9 km
Morón de la Frontera 419.0 km
La Hoya 419.6 km
Ourense 425.2 km
Bragança 432.2 km
Hinojosa del Duque 440.0 km
Santiago de Compostela 466.5 km
Santiago 470.1 km
Salamanca 470.3 km
Tangier/Boukhalf AP 478.6 km
Tarifa 485.4 km
Zamora 486.4 km
Gibraltar 498.4 km
Larache 504.3 km
Ponferrada 508.2 km
Ceuta 517.3 km
Benavente 528.7 km
Sania Ramel Airport 536.7 km
Chefchaouen 568.7 km
Rabat/Sale AP 569.8 km
León 575.8 km