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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 - Pomezia Distance
Pratica di Mare 7.6 km
Ciampino 15.7 km
Rome/Urbe 31.2 km
Fiumicino Airport 32.5 km
Guidonia Montecelio 44.6 km
Latina 46.3 km
Vigna Di Valle 55.3 km
Civitavecchia 84.3 km
Frosinone 89.1 km
Rieti 91.3 km
Ponza 95.6 km
Viterbo 97.3 km
Monte Terminillo 102.2 km
Perugia 154.0 km
Radicofani 157.1 km
Monte Argentario 167.6 km
Grazzanise 186.8 km
Grosseto 198.5 km
Frontone 202.6 km
Pescara 206.7 km
San Giovanni Teatino 207.2 km
Arezzo 208.8 km
Naples/Capodichino 216.7 km
Capri 224.6 km
Ancona/Falconara 232.5 km
Campobasso 239.6 km
Rimini 256.0 km
Monte Calamita 261.1 km
Calamita 263.0 km
Florence/Peretola 273.8 km
Cervia 278.9 km
Forlì 279.7 km
Termoli 280.6 km
Salerno Costa d'Amalfi Airport 291.3 km
Point Marina/Ravenna 303.4 km
Trevico 311.5 km
Pisa 322.4 km
Ustica 329.9 km
Alistro 336.7 km
Foggia "Gino Lisa" Airport 338.8 km
Bologna/Borgo 339.6 km
Monte Cimone 340.7 km
Olbia 342.5 km
Solenzara 346.2 km
Bastia - Poretta Airport 349.5 km
Amendola 358.4 km
Ferrara 358.5 km
Capo Bellavista 363.6 km
Capo Pertusato 370.7 km
Cap Corse 377.3 km
Figari 379.2 km
Mali Lošinj 379.8 km
Monte Sant'Angelo 383.8 km
Falcone Borsellino Airport 384.6 km
Pula Airport 384.6 km
Sarzana/Luni 384.8 km
Capo S. Lorenzo 397.8 km
Zadar 402.0 km
Trapani 407.8 km
Vieste 408.7 km
Padua Airport 412.2 km
Zadar Airport 412.3 km
Ajaccio Napoleon Bonaparte Airport 412.5 km
L'Île-Rousse 412.7 km
Venice Marco Polo Airport 417.2 km
Rab 419.3 km
Pazin 419.4 km
Parma 423.1 km
Calvi/St Catherine 423.6 km
Palagruža 424.0 km
Komiža 426.2 km
Latronico 427.1 km
Portorož Airport 431.3 km
Portorož 434.1 km
Treviso 434.6 km
Capo Carbonara 434.6 km
Zavizan 438.7 km
Istrana 439.1 km
Bonifati 439.3 km
Prizzi 440.1 km
Šibenik 440.9 km
Villafranca 444.2 km
Gospić 445.9 km
Senj 447.2 km
Rijeka Airport 448.0 km
Rijeka 452.4 km
Trieste 453.7 km
Sciacca 456.2 km
Ronchi Legionari 463.3 km
Cagliari Elmas Airport 465.6 km
Decimomannu 467.9 km
Hvar 468.5 km
Split Airport 468.8 km
Piacenza 469.9 km
City 476.1 km
Brescia Airport 476.3 km
Marjan 480.0 km
Ghedi Air Base 480.2 km
Bari/Palese Macchie 480.3 km
Postojna 482.3 km