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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.


Estaciones meteorológicas cercanas - Breves Distancia
Macapá Aeropuerto 136.3 km
Pacajá 153.7 km
Tucuruí aeropuerto 168.4 km
Novo Repartimento 193.5 km
Porto de Moz 194.8 km
Altamira 218.3 km
Belém Aeropuerto 223.7 km
Soure 226.3 km
Soure 227.9 km
Belém 228.5 km
Monte Dourado aeropuerto 242.2 km
Tome-acu 245.3 km
Maraba 278.2 km
Castanhal 283.7 km
Marabá Aeropuerto 302.3 km
Salinópolis 353.8 km
Salinópolis 357.3 km
Paragominas 362.8 km
Araguatins 390.2 km
Tracuateua (Braganca) 397.6 km
Monte Alegre 401.3 km
Oiapoque 413.1 km
Oiapoque 413.3 km
Bragança 414.6 km
Saint Georges De L'Oyapock 415.4 km
Imperatriz Aeropuerto 435.1 km
Imperatriz 439.6 km
Placas 441.2 km
Santarén Aeropuerto 474.0 km
Belterra 501.3 km
Maripasoula 535.8 km