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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.


Stazioni meteo nelle vicinanze - Fiumicino Distanza
Aeroporto di Roma-Fiumicino 3.7 km
Pratica di Mare 25.6 km
Vigna Di Valle 34.2 km
Roma/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
Isola di 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
Monte Calamita 231.6 km
Ancona/Falconara 237.2 km
Napoli/Capodichino 248.3 km
Rimini 248.6 km
Firenze/Peretola 249.7 km
Isola di Capri 255.6 km
Forlì 265.5 km
Cervia 267.4 km
Campobasso 269.9 km
Ravenna/Punta Marina 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
Aeroporto di Bastia Poretta 317.9 km
Bologna/Borgo Panigale 318.9 km
Aeroporto di Salerno-Costa d'Amalfi 322.9 km
Ferrara 341.0 km
Capo Pertusato 342.3 km
Trevico 342.8 km
Capo Bellavista 344.9 km
Capo Corso 345.8 km
Ustica 348.5 km
Figari 350.3 km
Sarzana/Luni 356.0 km
Aeroporto di Foggia 369.3 km
Isola Rossa 381.2 km
Capo S. Lorenzo 381.4 km
Aeroporto di Ajaccio Napoleone Bonaparte 382.2 km
Aeroporto di Pola 388.5 km
Amendola 388.6 km
Lussinpiccolo 389.3 km
Calvi/St Catherine 392.3 km
Aeroporto di Padova 397.4 km
Parma 397.5 km
Aeroporto di Palermo-Punta Raisi 401.5 km
Aeroporto di Venezia-Marco Polo 406.2 km
Monte Sant'Angelo 413.5 km
Zara 418.1 km
Aeroporto di Trapani-Birgi 419.9 km
Capo Carbonara 420.0 km
Pisino 422.1 km
Treviso 422.5 km
Villafranca 423.0 km
Istrana 426.5 km
Aeroporto di Zara-Zemonico 429.2 km
Arbe 429.8 km
Portorose Aeroporto 430.8 km
Portorose 433.1 km
Vieste 437.8 km
Piacenza 442.6 km
Aeroporto di Cagliari-Elmas 448.3 km
Decimomannu 449.6 km
Zavizan 450.1 km
Comisa 450.7 km
Pelagosa 451.4 km
Aeroporto di Brescia-Montichiari 452.4 km
Trieste 453.8 km
Aeroporto di Fiume 455.2 km
Aeroporto di Ghedi 456.1 km
Alghero 456.9 km
Segna 457.4 km
Fiume 458.3 km
Prizzi 458.6 km
Latronico 458.7 km
Gospić 460.6 km
Ronchi Legionari 461.0 km
Sebenico 461.7 km
Bonifati 470.4 km
Capo Caccia 471.4 km
Sciacca 472.5 km
Capo Frasca 473.9 km
Nova Gorica 474.7 km
Genova/Sestri 475.3 km
Passo dei Giovi 483.0 km