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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 - Arusha Distancia
Arusha 0.0 km
Kilimanjaro Apt. 50.6 km
Makindu 164.3 km
Nairobi / Wilson 180.6 km
Dagoretti 181.9 km
Nairobi aeropuerto 182.0 km
Narok 215.9 km
Voi Aeropuerto 216.2 km
Nyeri 260.8 km
Embu 268.3 km
Dodoma 271.5 km
Nakuru Aeropuerto 280.3 km
Kericho 306.1 km
Kisii 314.3 km
Meru 324.3 km
Morogoro 331.2 km
Mombasa Aeropuerto 339.5 km
Musoma 355.1 km
Kisumu/Victoria-See aeropuerto 360.7 km
Eldoret 370.2 km
Kakamega 384.2 km
Zanzíbar Aeropuerto 384.5 km
Zanzíbar Aeropuerto 384.5 km
Malindi 387.9 km
Iringa 401.1 km
Garissa Aeropuerto 419.1 km
Mwanza 419.4 km
Dar es-Salam Aeropuerto 423.0 km
Kitale Aeropuerto 430.4 km
Tabora Aeropuerto 450.5 km
Tororo 456.3 km
Lamu 487.4 km
Jinja 515.1 km
Kampala 556.8 km
Entebbe aeropuerto 557.9 km
Wajir 586.7 km