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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 - Saint-Denis Distance
Paris-Le Bourget Airport 10.9 km
Parc Montsouris 12.5 km
Charles de Gaulle Airport 22.4 km
Orly Airport 24.4 km
Villacoublay/Velizy 24.9 km
Toussus-le-Noble 33.8 km
Cormeilles 39.0 km
Creil 39.8 km
Trappes 41.5 km
Melun 51.2 km
Beauvais/Tille 64.8 km
Chartres 107.9 km
Albert Airport 121.8 km
Méaulte 122.0 km
Orléans 124.0 km
Evreux/Fauville 126.5 km
Saint-Quentin 136.4 km
Rouen/Boos 139.2 km
Châteaudun 144.5 km
Abbeville 145.4 km
Dieppe 178.2 km
Auxerre 182.2 km
Aérodrome de Blois 188.4 km
Romorantin-Lanthenay 194.1 km
Le Touquet 194.1 km
Troyes - Barberey Airport 197.6 km
Lille Airport 200.1 km
Châlons Vatry Airport 202.8 km
Reims - Prunay Aerodrome 203.4 km
Bourges 207.6 km
Avord 212.1 km
Boulogne-sur-Mer 217.0 km
Aéroport de Nevers-Fourchambault 231.3 km
Beitem 235.3 km
Dunkirk 235.4 km
Châteauroux 239.4 km
Koksijde 242.2 km
Tours/St Symphorien 245.1 km
Chièvres 246.0 km
Deauville-Saint-Gatien AP 247.7 km
Deauville-Saint-Gatien 247.8 km
Alencon/Valframbert 256.6 km
Ostend Airport 258.5 km
Le Havre/Octeville 261.0 km
Sainte-Adresse 261.9 km
Le Mans/Arnage 263.9 km
Gavere 266.3 km
Langdon Bay 268.9 km
Charleville-Mézières 271.2 km
Lydd Airport 274.5 km
Melle 280.0 km
Dourbes 282.0 km
Zeebrugge 284.6 km
St Dizier/Robinson 285.8 km
Charleroi / Gosselies 289.3 km
Manston 291.0 km
Florennes 294.0 km
Westdorpe 304.8 km
Uccle 304.9 km
Guéret Airport 310.0 km
Vlissingen 312.5 km
Caen 312.9 km
Herstmonceux 314.2 km
Ernage 316.9 km
Brussels Airport 326.8 km
Vichy/Charmeil 329.0 km
Angers 333.4 km
Saint-Yan 335.6 km
Beauvechain 336.3 km
Wilhelminadorp 336.6 km
Shoeburyness 337.4 km
Sint-Katelijne-Waver 339.5 km
Antwerpen / Deurne 344.9 km
London Southend Airport 346.5 km
Poitiers/Biard 347.1 km
Stabroek 347.7 km
Humain 352.1 km
Langres Airport 353.9 km
Euro Platform 355.9 km
Woensdrecht 356.3 km
Dijon Air Base 356.7 km
Laval Airport 358.6 km
St. Hubert/Ardennen 360.8 km
Shoreham Airport 361.4 km
Clermont/Aulnat 361.9 km
Le Goeree 364.3 km
Limoges/Bellegarde 365.7 km
Angers 367.6 km
Buzenol 367.8 km
Biggin Hill 371.1 km
Gatwick Airport 374.7 km
Charlwood 378.2 km
Kenley 378.8 km
Schaffen 379.7 km
London City Airport 383.6 km
Wattisham Airport 387.4 km
Hook of Holland 391.0 km
Andrewsfield Aerodrome 391.7 km
Retie 391.9 km
Liege / Bierset 394.2 km