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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 - Den Helder Distance
De Kooy Airfield 1.2 km
Berkhout 37.4 km
Vlieland 39.8 km
Wijk aan Zee 49.9 km
Stavoren 63.2 km
Amsterdam-Schiphol 66.7 km
Hoorn-a Sea 70.5 km
L9-ff-1 Sea 79.9 km
Terschelling Hoorn 81.6 km
Voorschoten 94.5 km
Lelystad Airport 96.8 km
De Bilt 100.9 km
Cabauw 106.7 km
Rotterdam The Hague Airport 113.5 km
Leeuwarden 114.8 km
Herwijnen 123.4 km
Marknesse 124.8 km
Hook of Holland 128.5 km
K14-fa-1c Sea 134.5 km
Awg-1 Sea 143.8 km
Gilze en Rijen 150.7 km
Deelen 154.5 km
F16-a Sea 158.5 km
Le Goeree 165.4 km
Lauwersoog 167.2 km
Woensdrecht 170.3 km
Heino 172.7 km
P11-b Sea 173.0 km
Volkel Air Base 173.3 km
Eindhoven 177.2 km
K13-A 177.6 km
Wilhelminadorp 182.3 km
Stabroek 182.7 km
Retie 190.6 km
Antwerpen / Deurne 193.7 km
Euro Platform 196.5 km
Hoogeveen 199.4 km
Groningen-Eelde 201.8 km
Sint-Katelijne-Waver 206.4 km
Kleine-Brogel 208.4 km
Vlissingen 209.4 km
Weeze Airport 210.8 km
Kalkar 210.8 km
Westdorpe 214.5 km
F3-FB1 214.5 km
Schaffen 214.9 km
Ell 219.5 km
Arcen 222.5 km
Brussels Airport 225.5 km
Borkum Airport 226.3 km
J6-a Helipad Oil Platform 228.1 km
Eibergen 228.1 km
Bocholt 228.8 km
Diepenbeek 233.8 km
Uccle 239.8 km
Beauvechain 240.4 km
Melle 240.4 km
Twente 246.4 km
Zeebrugge 247.7 km
Maastricht-Beek 248.1 km
Gavere 252.8 km
Ahaus 257.4 km
Geilenkirchen 258.1 km
D15-fa-1 Sea 258.4 km
Ernage 260.9 km
Liege / Bierset 262.0 km
Baerl 264.2 km
Nieuw-Beerta 265.3 km
Mönchengladbach Airport 267.6 km
Mönchengladbach Airport 267.6 km
Orsbach 272.4 km
Charleroi / Gosselies 274.4 km
Emden Airport 277.2 km
Norderney 278.0 km
Chièvres 280.6 km
Meppen 283.0 km
Fliegerhorst Meppen 283.9 km
Lingen 284.5 km
Düsseldorf Airport 284.7 km
Ostend Airport 286.1 km
Beitem 290.1 km
Essen 295.3 km
A12-cpp Sea 297.6 km
Spa 297.7 km
Florennes 298.1 km
Mont Rigi 301.9 km
Humain 305.7 km
Nideggen-Schmidt 308.5 km
Nörvenich 311.6 km
Koksijde 312.1 km
Elsenborn 313.0 km
Dourbes 313.2 km
Lille Airport 321.1 km
Waltrop-Abdinghof 325.7 km
St. Hubert/Ardennen 327.0 km
Feuerschiff Deutsche Bucht 327.5 km
Wittmund Airport 328.6 km
Lüdinghausen 329.8 km
Kall 330.9 km
Lommersum 331.1 km