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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 - Petrolina Distancia
Petrolina 0.0 km
Petrolina 7.9 km
Petrolina 28.0 km
Senhor do Bonfim 103.1 km
Delfino 118.3 km
Uauá 124.4 km
Cabrobó 155.4 km
Jacobina 155.4 km
Jacobina 157.3 km
Ouricuri 164.2 km
Remanso 172.1 km
Queimadas 173.7 km
Remanso 174.2 km
Campos Sales 193.6 km
Euclides da Cunha 200.4 km
São João do Piauí 206.4 km
São João do Piauí 206.8 km
Picos 213.8 km
Picos 218.1 km
Irecê 221.1 km
Barbalha 221.3 km
Barbalha 225.6 km
Macajuba 235.4 km
Paulo Afonso aeropuerto 259.8 km
Serrinha 260.9 km
Oeiras 266.5 km
Itaberaba 270.0 km
Cipó 270.9 km
Serra Talhada 278.3 km
Taua 284.0 km
Tauá 284.1 km
Lençóis 285.5 km
Lençóis 285.8 km
Iguatu 289.6 km
Poço Verde 296.9 km
Feira de Santana 300.7 km
Barra 322.1 km
Cruz das Almas 323.4 km
Ibimirim 324.2 km
Barra 324.8 km
Carira 324.9 km
Amargosa 328.5 km
Piatã 346.8 km
Pão de Açúcar 347.2 km
Floriano 348.4 km
Floriano 348.4 km
Itabaianinha 348.7 km
Crateús 352.1 km
Castelo do Piauí 352.6 km
Itiruçu 357.7 km
Buritirama 363.4 km
Jaguaribe 364.8 km
São Pedro do Piauí 374.3 km
Valença 376.3 km
Ibotirama 378.7 km
Quixeramobim 380.6 km
Salvador 387.6 km
Conde 389.7 km
Salvador Aeropuerto 392.4 km
Arcoverde 394.0 km
Monteiro 401.7 km
Aracaju Aeropuerto 412.5 km
Aracaju 412.6 km
Patos 414.4 km
Patos 417.6 km
Bom Jesus 421.0 km
Marau 427.6 km
Morada Nova 436.7 km
Teresina aeropuerto 437.5 km
Palmeira Dos Indios 437.5 km
Arapiraca 439.4 km
Urucui 449.6 km
Garanhuns 450.8 km
Garanhuns 453.1 km
Bom Jesus da Lapa aeropuerto 454.7 km
Santa Rita de Cássia 463.2 km
Brejo Grande 463.3 km
Coruripe 479.5 km
Colinas 492.3 km
Cabaceiras 501.7 km
Mossoro/17 Rosado 504.5 km
Barreiras 545.6 km
Barreiras 545.6 km
Correntina 558.0 km
Santa Cruz 572.3 km