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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 - Fiumicino Distance
Fiumicino Airport 3.7 km
Pratica di Mare 25.6 km
Vigna Di Valle 34.2 km
Rome/Urbe 36.0 km
Ciampino 39.0 km
Civitavecchia 53.2 km
Guidonia Montecelio 61.2 km
Viterbo 75.4 km
Latina 77.9 km
Rieti 99.3 km
Monte Terminillo 112.9 km
Frosinone 119.6 km
Ponza 122.0 km
Radicofani 133.9 km
Monte Argentario 136.3 km
Perugia 146.2 km
Grosseto 168.4 km
Arezzo 189.9 km
Frontone 198.0 km
Grazzanise 218.4 km
Monte Calamita 229.7 km
Pescara 230.5 km
San Giovanni Teatino 231.3 km
Calamita 231.6 km
Ancona/Falconara 237.2 km
Naples/Capodichino 248.3 km
Rimini 248.6 km
Florence/Peretola 249.7 km
Capri 255.6 km
Forlì 265.5 km
Cervia 267.4 km
Campobasso 269.9 km
Point Marina/Ravenna 292.0 km
Pisa 293.6 km
Alistro 305.5 km
Termoli 309.0 km
Monte Cimone 315.0 km
Solenzara 315.8 km
Olbia 316.9 km
Bastia - Poretta Airport 317.9 km
Bologna/Borgo 318.9 km
Salerno Costa d'Amalfi Airport 322.9 km
Ferrara 341.0 km
Capo Pertusato 342.3 km
Trevico 342.8 km
Capo Bellavista 344.9 km
Cap Corse 345.8 km
Ustica 348.5 km
Figari 350.3 km
Sarzana/Luni 356.0 km
Foggia "Gino Lisa" Airport 369.3 km
L'Île-Rousse 381.2 km
Capo S. Lorenzo 381.4 km
Ajaccio Napoleon Bonaparte Airport 382.2 km
Pula Airport 388.5 km
Amendola 388.6 km
Mali Lošinj 389.3 km
Calvi/St Catherine 392.3 km
Padua Airport 397.4 km
Parma 397.5 km
Falcone Borsellino Airport 401.5 km
Venice Marco Polo Airport 406.2 km
Monte Sant'Angelo 413.5 km
Zadar 418.1 km
Trapani 419.9 km
Capo Carbonara 420.0 km
Pazin 422.1 km
Treviso 422.5 km
Villafranca 423.0 km
Istrana 426.5 km
Zadar Airport 429.2 km
Rab 429.8 km
Portorož Airport 430.8 km
Portorož 433.1 km
Vieste 437.8 km
Piacenza 442.6 km
Cagliari Elmas Airport 448.3 km
Decimomannu 449.6 km
Zavizan 450.1 km
Komiža 450.7 km
Palagruža 451.4 km
Brescia Airport 452.4 km
Trieste 453.8 km
Rijeka Airport 455.2 km
Ghedi Air Base 456.1 km
Alghero 456.9 km
Senj 457.4 km
Rijeka 458.3 km
Prizzi 458.6 km
Latronico 458.7 km
Gospić 460.6 km
Ronchi Legionari 461.0 km
Šibenik 461.7 km
Bonifati 470.4 km
Capo Caccia 471.4 km
Sciacca 472.5 km
Capo Frasca 473.9 km
City 474.7 km
Genova/Sestri 475.3 km
Giovi Pass 483.0 km