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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 - Porkhov Distance
Dno 44.8 km
Nikolaevskoe 82.2 km
Puskinskie Gory 102.7 km
Pskov 128.5 km
Opochka 137.9 km
Siversky 166.1 km
Velikiye Luki 180.9 km
Kingisepp 188.2 km
Kholm 191.2 km
Staraya Russa 198.1 km
Arkazha 202.5 km
Gdov 213.1 km
Narva 223.2 km
Pulkovo Airport 228.1 km
Polotsk 240.0 km
Lyuban 241.3 km
Verkhnyadzvinsk 260.6 km
Toropets 262.5 km
Shlisselburg 263.5 km
Vitebsk 269.8 km
Velizh 275.1 km
Rēzekne 281.4 km
Võru 281.8 km
Alūksne 282.1 km
Jõhvi 284.1 km
Syanno 287.1 km
Lyepyel 295.9 km
Vyborg 300.9 km
Mustvee 308.6 km
Tartu 317.9 km
Kirishi 319.9 km
Gulbene 321.5 km
Demyansk 324.9 km
Orsha 330.0 km
Sharkawshchyna 331.0 km
YamskayaSloboda 335.5 km
Joutseno 336.9 km
Virolahti 341.2 km
Dokshytsy 344.6 km
Lappeenranta 353.8 km
Lappeenranta 355.5 km
Parikkala Koitsanlahti 356.4 km
Barysaw 360.3 km
Kotka Haapasaari 360.8 km
Jõgeva 363.3 km
Horki 367.3 km
Daugavpils 368.7 km
Mogilev 373.1 km
Kunda (Port) 375.6 km
Valaam 376.7 km
Krenitsy 381.0 km
Madona 381.6 km
Rankki 384.3 km
Byerazino 387.3 km
Valga 391.5 km
Punkaharju Airport 392.1 km
Väike-Maarja Parish 392.9 km
Ostashkov 401.6 km
Sortavala 401.8 km
Smolensk 402.0 km
Zosēni 410.4 km
Zosēni 410.4 km
Savonlinna 411.2 km
Klichaw 414.3 km
Anjala 419.1 km
Bely 420.1 km
Dūkštas 422.5 km
Zīlāni 422.5 km
Utti 423.4 km
Pernaja Orrengrund 423.6 km
Minsk National Airport 431.1 km
Juva 443.3 km
Viljandi 443.7 km
Babruysk 444.8 km
Slawharad 445.3 km
Marjina Horka 445.3 km
Łyntupy 449.2 km
Pochinok 453.0 km
Švenčionys 456.6 km
Mikkeli 464.2 km
Rūjiena 465.3 km
Priekuļi 470.9 km
Türi 471.7 km
Tikhvin 479.8 km
Borovichi 488.1 km
Olonets 489.6 km
Kallbadagrund 491.1 km
Utena 493.7 km
Porvoo Emasalo 497.7 km
Skrīveri 504.6 km
Kastsyukovichy 506.7 km
Shirki 509.2 km
Porvoo 509.5 km
Porvoo Kilpilahti 510.9 km
Slutsk 513.5 km
Heinola 515.8 km
Roslavl 516.5 km
Lodeynoye Pole 525.8 km
Lahti 538.2 km
Leivonmäki 558.3 km