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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 - Alvalade Distance
Sines/Montes Chaos 53.8 km
Beja Airbase 54.0 km
Beja 58.3 km
Évora 85.2 km
Montijo 111.1 km
Faro 111.1 km
Sagres 120.5 km
Lissabon/Geof 121.3 km
Lisbon 123.5 km
Lisbon Airport 125.4 km
Alverca do Ribatejo 127.1 km
Sintra Air Base — inglês 145.2 km
Huelva 179.2 km
Portalegre 183.7 km
Badajoz Airport 203.5 km
Monte Real 216.4 km
Castelo Branco 232.2 km
Coimbra 244.3 km
Rota 267.0 km
Dos Hermanas Airport 274.1 km
Cádiz 280.2 km
Seville 283.0 km
Cáceres 284.1 km
Penhas Douradas 289.1 km
Jerez de la Frontera 289.1 km
San Fernando 292.1 km
Coria/Tabacoa 305.8 km
Viseu Airport 311.7 km
Morón de la Frontera 319.9 km
Ovar 329.6 km
Ovar Airport 329.6 km
Plasencia 346.0 km
Porto/Pedras Rubras 364.8 km
Tangier/Boukhalf AP 368.1 km
Hinojosa del Duque 369.3 km
Vila Real Airport 375.6 km
Tarifa 376.3 km
Gibraltar 391.0 km
Larache 393.6 km
Córdoba 393.9 km
La Hoya 401.8 km
Vitigudino 404.5 km
Ceuta 408.7 km
Viana do Castelo 409.9 km
Sania Ramel Airport 427.0 km
Málaga Airport 456.2 km
Chefchaouen 458.2 km
Salamanca 462.7 km
Bragança 464.5 km
Rabat/Sale AP 464.8 km
Andújar 480.6 km
Casablanca Airport 487.9 km
Zamora 493.6 km
Ávila 510.7 km
Nouaceur Airport 511.2 km
Toledo 528.4 km
Meknes/Bassatine AP 548.5 km
Valladolid Airport 573.2 km
Valladolid 575.3 km
Navacerrada 579.4 km
Segovia 580.5 km
Fès 582.0 km