World

South America



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 - Ilha Rasa Distance
IlhaRasa 0.0 km
Rio de Janeiro Airport 13.7 km
Galeão Air Force Base Airport 23.1 km
Jacarepaguá 25.0 km
Afonsos Air Force Base Airport 30.4 km
Rio de Janeiro 30.7 km
Xerém 41.3 km
Xerém 41.3 km
Rio De Janeiro-marambaia 50.1 km
Santa Cruz 64.3 km
Nova Friburgo 79.7 km
Valenca 83.5 km
Juiz de Fora Airport 107.7 km
São Pedro da Aldeia Airport 119.5 km
Cabo Frio Airport 120.3 km
Cordeiro 121.4 km
Arraial do Cabo 125.9 km
Resende 152.4 km
Resende 153.9 km
Macaé 159.3 km
Barbacena 163.5 km
Barbacena 164.5 km
Paraty 176.0 km
Cambuci 179.7 km
Muriaé 182.0 km
Viçosa 189.9 km
São João del-Rei 199.8 km
Itaperuna 208.2 km
Passa Quatro 208.7 km
Ouro Branco 213.8 km
Campos dos Goytacazes 229.5 km
Guaratinguetá 229.8 km
Campos dos Goytacazes 229.8 km
Sao Tome 248.4 km
Sao Luis Do Paraitinga 252.7 km
Lavras 252.8 km
Manhuaçu 253.4 km
Ibirité 262.8 km
Taubaté 263.9 km
Alegre 265.6 km
Belo Horizonte Intl. Airport 267.4 km
Taubaté Airport 269.0 km
Carlos Prates Airport 271.3 km
Pampulha 272.5 km
Belo Horizonte Airport 274.3 km
Campos do Jordão 274.3 km
Presidente Kennedy 285.6 km
Lagoa Santa Airport 287.1 km
Caratinga 289.7 km
Timóteo 289.8 km
Florestal 292.0 km
Belo Horizonte (Confins) 292.8 km
Caratinga 295.1 km
Vale do Aço Regional Airport 302.7 km
São José dos Campos 302.7 km
Monte Verde 322.5 km
Formiga 330.2 km
Alfredo Chaves 335.2 km
Santos Airport 357.3 km
Plataforma P25 Airport 368.6 km
Guarulhos Airport 370.6 km
Caldas 371.1 km
Sao Paulo-mirante De Santana 387.8 km
Vitória 389.4 km
Marte Civ / Mil 389.8 km
Sao Paulo AP 392.0 km
Poços de Caldas 392.5 km
Dores do Indaiá 394.1 km
Vitoria/Goiabeiras AP 394.9 km
Passos 428.8 km
Campinas/Viracopos AP 443.5 km
Casa Branca 448.5 km
Pirassununga 473.5 km
Piracicaba 480.2 km
Sorocaba 494.5 km
Araxá 501.6 km
Araxá 503.0 km
Iguape 505.2 km
Franca 509.6 km
Franca 515.9 km
São Carlos Airport 533.2 km
São Carlos 533.7 km
Leite Lopes Airport 536.4 km
Ituverava 556.5 km
Uberaba 594.0 km