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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 - Penafiel Distância
Porto/Pedras Rubras 44.7 km
Ovar 49.9 km
Ovar Aeroporto 51.1 km
Vila Real Airport 63.6 km
Viseu Airport 69.4 km
Viana do Castelo 74.7 km
Coimbra 117.4 km
Vigo/Peinador 118.5 km
Penhas Douradas 118.8 km
Ourense 133.2 km
Pontevedra 141.3 km
Monte Real 164.6 km
Castelo Branco 175.0 km
Bragança 184.8 km
Aeroporto de Santiago-Rosalía de Castro 186.4 km
Santiago de Compostela 187.0 km
Vitigudino 206.3 km
Lugo/Rozas 229.9 km
Portalegre 232.3 km
Coria/Tabacoa 233.1 km
Corunha 239.1 km
Ponferrada 239.7 km
Alverca do Ribatejo 268.3 km
Plasencia 276.0 km
Aeroporto Humberto Delgado 282.5 km
Lisboa 283.8 km
Base Aérea de Sintra 285.9 km
Samora 286.0 km
Puerto Leitariegos 287.3 km
Montijo 287.5 km
Cáceres 289.4 km
Lisboa/Geof 289.8 km
Évora 297.0 km
Aeroporto de Badajoz 303.3 km
La Hoya 303.4 km
Benavente 304.8 km
Salamanca 311.1 km
Leão 330.6 km
Base Aérea de Beja 347.7 km
Beja 353.0 km
Oviedo 358.9 km
Asturias/Aviles 360.7 km
Sines/Montes Chaos 363.6 km
Puerto de san Isidro 384.4 km
Valladolid Airport 386.1 km
Gijón 388.1 km
Valladolid 394.6 km
Ávila 405.6 km
Huelva 458.8 km
Hinojosa del Duque 460.7 km
Segóvia 464.7 km
Sagres 468.2 km
Navacerrada 477.2 km
Toledo 493.3 km
Sevilha 495.3 km
Dos Hermanas Aeroporto 499.0 km
Córdova 533.0 km
Morón de la Frontera 537.0 km
Andújar 586.9 km