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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 - Sperlonga Απόσταση
Φροζινόνε 44.1 km
Πόντσα 64.8 km
Latina 67.7 km
Grazzanise 73.7 km
Naples/Capodichino 103.4 km
Ciampino 110.9 km
Guidonia Montecelio 112.6 km
Κάπρι 114.1 km
Pratica di Mare 119.5 km
Rome/Urbe 128.9 km
Καμπομπάσσο 139.7 km
Monte Terminillo 141.1 km
Ριέτι 143.1 km
Αεροδρόμιο της Ρώμης-Φιουμιτσίνο 145.8 km
San Giovanni Teatino 153.2 km
Πεσκάρα 153.8 km
Vigna Di Valle 163.2 km
Salerno Costa d'Amalfi Airport 178.0 km
Τέρμολι 192.3 km
Civitavecchia 197.4 km
Βιτέρμπο 200.6 km
Trevico 201.5 km
Περούτζα 224.4 km
Foggia "Gino Lisa" Airport 234.8 km
Amendola 256.0 km
Ancona/Falconara 256.4 km
Radicofani 258.0 km
Frontone 258.0 km
Ούστικα 276.9 km
Monte Argentario 280.7 km
Monte Sant'Angelo 284.2 km
Αρέτσο 298.4 km
Γκροσσέτο 309.9 km
Vieste 311.7 km
Latronico 313.8 km
Ρίμινι 314.0 km
Bonifati 327.2 km
Falcone Borsellino Airport 335.2 km
Παλαγκρούζα 336.1 km
Cervia 346.2 km
Komiža 353.2 km
Φορλί 354.6 km
Ζάνταρ 368.0 km
Point Marina/Ravenna 369.5 km
Firenze/Peretola 372.4 km
Mali Lošinj 372.9 km
Bari/Palese Macchie 373.1 km
Monte Calamita 374.3 km
Zadar Airport 374.6 km
Calamita 376.2 km
Trapani 376.8 km
Prizzi 381.9 km
Σίμπενικ 384.6 km
Monte Scuro 389.3 km
Gioia del Colle 393.1 km
Χβαρ 394.0 km
Marina di Ginosa 394.5 km
Pula Airport 398.3 km
Λαμετσία Τέρμε 402.8 km
Αεροδρόμιο του Σπλιτ 403.2 km
Μεσσήνη 404.4 km
Σκιάτσα 406.2 km
Ραμπ 407.1 km
Έννα 409.2 km
Marjan 412.3 km
Gospić 415.8 km
Λάστοβο 419.0 km
Zavizan 421.8 km
Ρέτζο Καλάμπρια 422.5 km
Bologna/Borgo 428.8 km
Πίζα 430.7 km
Senj 434.8 km
Pazin 435.4 km
Όλμπια 437.7 km
Capo Bellavista 438.4 km
Φερράρα 438.8 km
Monte Cimone 441.9 km
Catania/Fontanarosa 446.1 km
Αεροδρόμιο της Ριέκα 446.8 km
Naval Air Station Sigonella 447.1 km
Alistro 448.1 km
Grottaglie 448.5 km
Solenzara 454.8 km
Μακάρσκα 455.3 km
Ριέκα 455.6 km
Portorož Airport 457.8 km
Τζέλα 458.7 km
Portorož 462.1 km
Bastia - Poretta Airport 462.1 km
Capo S. Lorenzo 464.5 km
Μπίχατς 471.1 km
Κρότωνας 471.1 km
Capo Pertusato 473.3 km
Αεροδρόμιο Μάρκο Πόλο της Βενετίας 477.2 km
Ogulin 477.3 km
Τεργέστη 477.4 km
Figari 483.4 km
Padua Airport 483.7 km
Livno 485.9 km
Ploče 486.0 km