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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.

Nearby Weather Stations - Ōmu	Distance
Monbetsu	49.1 km
Esashi	52.8 km
Monbetsu Airport	54.7 km
Asahikawa Airport	96.8 km
Asahikawa	98.4 km
Asahikawa Airport	99.3 km
Haboro	142.3 km
Memanbetsu Airport	147.4 km
Wakkanai Airport	148.5 km
Obihiro	150.9 km
Abashiri	155.1 km
Rumoi	158.6 km
Wakkanai	160.6 km
Tokachi	167.0 km
Iwamizawa	178.5 km
Kushiro Airport	194.2 km
Hiroo	207.1 km
Juzhno-Sahalinsk AP	211.8 km
Juzhno-Sahalinsk AP	211.8 km
Kushiro	213.2 km
Chitose	213.6 km
Urakawa	215.5 km
Sapporo	218.5 km
Sapporo	226.3 km
Tomakomai	234.2 km
Nemuro Nakashibetsu Airport	239.7 km
Otaru	249.4 km
Kutchan	285.8 km
Muroran	297.1 km
Nemuro	312.4 km
Ilyinskiy	312.5 km
Yuzhno-Kurilsk	326.9 km
Suttsu	341.7 km
Hakodate Airport	343.1 km
Hakodate	345.7 km
Mutsu	349.2 km
Ōminato Guard	358.0 km
Misawa	385.0 km
Hachinohe	390.5 km
JMSDF Hachinohe Air Base	391.9 km
Esashi	394.4 km
Aomori	410.7 km
Tyuleny	415.0 km
Aomori Airport	420.9 km
Odate- Noshiro Airport	480.0 km
Fukaura	480.8 km
Svetlaya	542.4 km
Agzu	570.8 km

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