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 - Caxias Distance
Caxias 1.2 km
Caxias 4.5 km
Teresina Airport 60.6 km
Chapadinha 87.0 km
São Pedro do Piauí 112.3 km
Colinas 140.0 km
Floriano 162.2 km
Floriano 162.2 km
Bacabal 167.7 km
Bacabal 169.1 km
Preguicas 194.0 km
Sao Luis/Marechal AP 204.4 km
São Luís Airport 205.5 km
Castelo do Piauí 207.4 km
São Luís 208.5 km
Barra do Corda 218.9 km
Oeiras 220.3 km
Barra do Corda 222.0 km
Parnaíba 224.2 km
Parnaíba Airport 235.3 km
Urucui 241.3 km
Picos 276.8 km
Picos 283.7 km
Crateús 297.9 km
São João do Piauí 312.8 km
São João do Piauí 313.9 km
Turiaçu 337.3 km
Turiaçu 338.5 km
Taua 339.2 km
Sobral 344.2 km
Sobral 344.8 km
Tauá 354.0 km
Campos Sales 380.1 km
Acaraú 387.9 km
Ouricuri 431.8 km
Quixeramobim 450.1 km
Imperatriz 463.0 km
Imperatriz Airport 467.2 km
Paragominas 468.2 km
Iguatu 471.2 km
Estreito 476.8 km
Bragança 485.1 km
Barbalha 493.5 km
Tracuateua (Braganca) 496.4 km
Barbalha 497.6 km
Carolina Airport 499.1 km
Carolina 499.7 km
Carolina 500.3 km
Cabrobó 543.1 km
Salinópolis 554.7 km
Salinópolis 557.7 km
Castanhal 581.8 km