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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 - Ponza Distance
Ponza 0.0 km
Latina 68.9 km
Frosinone 86.9 km
Pratica di Mare 98.2 km
Ciampino 102.6 km
Guidonia Montecelio 120.0 km
Rome/Urbe 123.2 km
Fiumicino Airport 124.4 km
Grazzanise 125.1 km
Capri 144.7 km
Naples/Capodichino 149.4 km
Vigna Di Valle 150.8 km
Rieti 164.2 km
Monte Terminillo 168.2 km
Civitavecchia 173.8 km
Viterbo 192.9 km
Campobasso 201.9 km
San Giovanni Teatino 214.8 km
Pescara 215.2 km
Salerno Costa d'Amalfi Airport 220.7 km
Perugia 240.5 km
Ustica 240.9 km
Radicofani 252.7 km
Trevico 254.6 km
Monte Argentario 254.7 km
Termoli 256.5 km
Frontone 283.3 km
Grosseto 289.5 km
Foggia "Gino Lisa" Airport 293.1 km
Ancona/Falconara 296.3 km
Falcone Borsellino Airport 297.6 km
Arezzo 303.1 km
Amendola 315.1 km
Trapani 330.0 km
Rimini 339.0 km
Monte Sant'Angelo 344.4 km
Monte Calamita 346.1 km
Calamita 347.7 km
Prizzi 350.2 km
Latronico 353.0 km
Bonifati 357.5 km
Cervia 366.3 km
Florence/Peretola 369.4 km
Sciacca 369.6 km
Forlì 370.1 km
Vieste 372.8 km
Capo Bellavista 376.1 km
Olbia 382.2 km
Point Marina/Ravenna 390.6 km
Enna 391.6 km
Palagruža 399.6 km
Capo S. Lorenzo 400.8 km
Alistro 407.9 km
Solenzara 410.0 km
Messina 411.9 km
Pisa 415.4 km
Komiža 418.0 km
Monte Scuro 420.2 km
Capo Pertusato 422.2 km
Bastia - Poretta Airport 425.2 km
Mali Lošinj 426.0 km
Lamezia Terme 426.8 km
Bari/Palese Macchie 427.4 km
Zadar 428.3 km
Reggio Calabria 429.9 km
Capo Carbonara 430.7 km
Figari 433.5 km
Bologna/Borgo 434.4 km
Zadar Airport 435.7 km
Zadar Airport 435.7 km
Monte Cimone 436.1 km
Gela 438.1 km
Naval Air Station Sigonella 438.5 km
Catania/Fontanarosa 439.9 km
Marina di Ginosa 441.4 km
Gioia del Colle 443.7 km
Pula Airport 444.5 km
Šibenik 448.6 km
Ferrara 451.1 km
Cap Corse 458.6 km
Hvar 458.8 km
Pantelleria 459.1 km
Rab 462.1 km
Split Airport 467.9 km
Cagliari Elmas Airport 470.0 km
Ajaccio Napoleon Bonaparte Airport 474.6 km
Decimomannu 475.3 km
Gospić 475.5 km
Marjan 477.1 km
Sarzana/Luni 477.9 km
Zavizan 478.2 km
Lastovo 482.7 km
L'Île-Rousse 486.6 km
Kelibia Airport 489.1 km
Senj 490.1 km
Calvi/St Catherine 495.5 km
Capo Frasca 515.1 km
Cozzo Spadaro 517.7 km
Parma 518.6 km
Alghero 520.4 km