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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 - Arraial do Cabo Distancia
Arraial do Cabo 0.9 km
Cabo Frio Airport 7.4 km
São Pedro da Aldeia Airport 15.3 km
Macaé 53.9 km
Cordeiro 86.3 km
Nova Friburgo 90.1 km
Cambuci 114.3 km
IlhaRasa 126.4 km
Campos dos Goytacazes 126.6 km
Rio de Janeiro Airport 128.1 km
Campos dos Goytacazes 128.2 km
Sao Tome 132.2 km
Galeão Air Force Base Airport 137.8 km
Xerém 142.6 km
Xerém 142.6 km
Itaperuna 147.0 km
Jacarepaguá 150.3 km
Afonsos Air Force Base Airport 152.5 km
Rio de Janeiro 156.2 km
Muriaé 158.6 km
Rio De Janeiro-marambaia 176.4 km
Juiz de Fora Airport 178.0 km
Santa Cruz 189.5 km
Presidente Kennedy 189.8 km
Alegre 193.2 km
Valenca 193.4 km
Viçosa 204.0 km
Manhuaçu 224.0 km
Alfredo Chaves 240.9 km
Barbacena 241.5 km
Barbacena 241.7 km
Plataforma P25 Airport 244.6 km
Caratinga 262.0 km
Caratinga 267.3 km
Resende 273.5 km
Resende 275.5 km
Ouro Branco 275.9 km
Timóteo 286.8 km
São João del-Rei 291.0 km
Vitória 291.8 km
Vale do Aço Regional Airport 292.8 km
Vitoria/Goiabeiras AP 297.4 km
Paraty 302.4 km
Ibirité 326.1 km
Belo Horizonte Intl. Airport 326.4 km
Passa Quatro 331.1 km
Carlos Prates Airport 332.0 km
Pampulha 332.0 km
Belo Horizonte Airport 332.7 km
Lagoa Santa Airport 341.0 km
Belo Horizonte (Confins) 348.6 km
Guaratinguetá 355.2 km
Guanhães 358.3 km
Lavras 360.4 km
Florestal 365.8 km
Mantena 367.3 km
Sao Luis Do Paraitinga 379.1 km
Taubaté 390.1 km
Taubaté Airport 395.2 km
Campos do Jordão 399.7 km
Nova Venécia 400.9 km
Diamantina 423.5 km
Diamantina 427.0 km
São José dos Campos 429.1 km
São Mateus 431.4 km
São Mateus 432.3 km
Formiga 432.6 km
Curvelo 436.5 km
Monte Verde 448.3 km
Santos Airport 483.0 km
Dores do Indaiá 486.7 km
Caldas 493.2 km
Guarulhos Airport 497.1 km
Sao Paulo-mirante De Santana 514.2 km
Poços de Caldas 514.5 km
Marte Civ / Mil 516.2 km
Sao Paulo AP 518.4 km
Tres Marias 541.9 km
Passos 543.5 km
Araxá 609.0 km
Araxá 610.2 km
Patrocínio 636.4 km

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