World

Central 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 - Arriaga Distance
Arriaga 0.0 km
Coatzacoalcos 59.5 km
Tuxtla Gutiérrez Airport 85.4 km
Tuxtla Gutiérrez 87.3 km
Villahermosa 108.2 km
Villahermosa Airport 121.0 km
San Cristóbal de las Casas 141.0 km
Salina Cruz 142.4 km
Tapachula Airport 183.8 km
Comitán 196.7 km
Ciudad del Carmen Airport 234.2 km
Veracruz Airport 248.3 km
Retalhuleu 248.8 km
Bahías de Huatulco Intl. Airport 263.0 km
Quetzaltenango Airport 266.4 km
Huehuetenango AP 270.9 km
Puerto Ángel 287.6 km
Puerto Ángel 289.5 km
Oaxaca 313.7 km
Xalapa 337.5 km
Puerto San José Airport 343.3 km
Puerto Escondido Airport 355.0 km
Orizaba 357.2 km
Campeche 373.1 km
Guatemala/La Aurora AP 376.7 km
Tuxpan 392.7 km
Cobán 398.9 km
El Tajín National Airport 399.0 km
Huajuapan de León 430.8 km
Flores 447.1 km
Acajutla/sonsonate 452.7 km
Mérida 467.8 km
Mérida Airport 472.1 km
Santa Ana Airport 482.4 km
Zacapa Airport 485.4 km
Zacapa Airport 485.4 km
Esquipulas Airport 506.5 km
Sinuapa 525.0 km
Melchor de Mencos Airport 528.5 km
San Salvador / Ilopango AP 532.4 km
Comalapa Airport 539.1 km