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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 - Erftstadt Distance
Nörvenich 12.0 km
Lommersum 12.1 km
Nideggen-Schmidt 41.9 km
K�ln-Stammheim 42.2 km
Cologne Bonn Airport 43.8 km
Kall 43.8 km
Bad Neuenahr-Ahrweiler 48.0 km
Holzlar 48.3 km
Barweiler 51.8 km
Düsseldorf Airport 53.0 km
Mönchengladbach Airport 54.3 km
Mönchengladbach Airport 54.3 km
Neunkirchen-Seelscheid /Krawinkel 67.8 km
Schneifelforsthaus 68.4 km
Essen 68.6 km
Elsenborn 75.6 km
Baerl 77.0 km
Büchel Airport 78.1 km
Manderscheid 79.0 km
Geilenkirchen 82.5 km
Orsbach 82.7 km
Hümmerich 84.2 km
Mont Rigi 84.7 km
Andernach 84.7 km
Spangdahlem 93.7 km
Arcen 98.4 km
Hilgenroth 98.7 km
Spa 101.6 km
Koblenz Falkenstein-Kaserne 102.9 km
Eckenhagen 106.2 km
Lüdenscheid 108.3 km
Maastricht-Beek 110.0 km
Weeze Airport 110.5 km
Frankfurt- Hahn Airport 111.0 km
Waltrop-Abdinghof 111.6 km
Bocholt 115.4 km
Kalkar 115.7 km
Trier/Petrisberg 118.8 km
Ell 119.1 km
Deuselbach 120.9 km
Dortmund/Wickede 121.9 km
Montabaur 123.3 km
Wahlbach 129.4 km
Bad Marienberg 133.9 km
Lüdinghausen 135.3 km
Eibergen 138.8 km
Idar-Oberstein 138.9 km
Weiskirchen 140.1 km
Nastätten 140.4 km
Ahaus 141.1 km
Lennestadt-Theten 144.8 km
Luxembourg 146.2 km
Diepenbeek 147.0 km
Siegerland Airport 147.0 km
Nennig 147.6 km
Liege / Bierset 147.7 km
Kleine-Brogel 149.8 km
Volkel Air Base 150.3 km
Werl 150.4 km
Tholey 151.5 km
Neheim ded 152.6 km
Runkel - Ennerich 160.0 km
Geisenheim 160.9 km
Twente 161.0 km
Eslohe 162.6 km
Eindhoven 165.8 km
L�hnberg-Obershausen 166.4 km
Dillenburg 167.3 km
Deelen 169.7 km
Neunkirchen-Wellesweiler 171.1 km
Berus 171.9 km
St. Hubert/Ardennen 175.1 km
Ramstein Air Base 178.4 km
Münster Osnabrück Intl. Airport 178.6 km
Ruppertsecken 178.8 km
Stünzel 179.4 km
Saarbrücken/Ensheim 181.3 km
Humain 182.1 km
Buzenol 187.1 km
Heino 187.6 km
Waldems 188.3 km
Schaffen 190.3 km
Alzey 192.6 km
Wiesbaden 193.0 km
Kahler Asten 195.9 km
Lingen 197.4 km
Retie 198.0 km
Kleiner Feldberg 198.2 km
Pirmasens 201.7 km
Giessen 210.3 km
Metz-Nancy-Lorraine 210.8 km
Frankfurt Airport 213.9 km
Herwijnen 214.2 km
Hoogeveen 214.9 km
Frankfurt Airport 216.1 km
Bad Dürkheim 217.6 km
Meppen 218.6 km
Weinbiet 219.1 km
Thülen 219.6 km
Fliegerhorst Meppen 219.7 km