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 - Oeiras Distance
Oeiras 1.6 km
Picos 72.8 km
Picos 81.6 km
Floriano 99.7 km
Floriano 99.7 km
São Pedro do Piauí 108.5 km
São João do Piauí 114.8 km
São João do Piauí 116.0 km
Castelo do Piauí 151.0 km
Teresina Airport 174.8 km
Campos Sales 197.3 km
Taua 207.5 km
Caxias 218.7 km
Remanso 219.1 km
Remanso 220.2 km
Crateús 220.4 km
Tauá 220.9 km
Caxias 221.2 km
Ouricuri 239.0 km
Colinas 245.7 km
Urucui 249.6 km
Petrolina 250.3 km
Petrolina 266.0 km
Petrolina 273.1 km
Chapadinha 296.4 km
Bom Jesus 298.4 km
Delfino 307.8 km
Barbalha 314.9 km
Barbalha 319.9 km
Iguatu 322.3 km
Parnaíba 324.9 km
Sobral 334.9 km
Sobral 337.9 km
Parnaíba Airport 338.0 km
Cabrobó 339.5 km
Quixeramobim 348.8 km
Buritirama 349.8 km
Barra do Corda 364.9 km
Preguicas 365.0 km
Senhor do Bonfim 365.9 km
Bacabal 367.7 km
Barra do Corda 368.2 km
Bacabal 369.0 km
Uauá 380.2 km
Acaraú 394.8 km
Jaguaribe 400.5 km
Guaramiranga 423.6 km
Sao Luis/Marechal AP 424.5 km
São Luís Airport 425.5 km
Gilbués 427.3 km
São Luís 428.3 km
Serra Talhada 435.5 km
Queimadas 439.1 km
Morada Nova 448.3 km
Alto Parnaíba 456.2 km
Euclides da Cunha 461.4 km
Fortaleza 482.4 km
Paulo Afonso Airport 482.6 km
Fortaleza Airport 483.2 km
Poço Verde 551.1 km