United Kingdom

What are the sources for WeatherOnline forcasts?

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 - Dereham Distance
Marham 23.7 km
Norwich Weather Centre 26.2 km
Weybourne 32.6 km
Lakenheath 36.6 km
Mildenhall Royal Air Force 44.5 km
Great Yarmouth 55.7 km
RAF Holbeach 57.3 km
Wattisham 61.3 km
Wainfleet 63.7 km
Cambridge 71.9 km
RAF Wyton 78.4 km
Coningsby 86.3 km
Andrewsfield Aerodrome 92.8 km
Wittering 93.6 km
London Stansted Airport 98.9 km
Cranwell 103.6 km
Barkston 105.2 km
Bedford 107.4 km
Waddington 111.2 km
Donna Nook 112.9 km
Scampton 121.0 km
London Southend Airport 123.3 km
Cranfield Airport 123.8 km
Shoeburyness 124.5 km
Luton Airport 124.8 km
Rothamsted Park 129.5 km
Humberside 132.6 km
Gravesend Broadness 140.1 km
London City Airport 142.8 km
St. James's Park 147.9 km
Manston 149.6 km
Northolt 155.7 km
Biggin Hill 162.4 km
Kenley 166.9 km
Langdon Bay 173.3 km
Bridlington 175.0 km
Lydd Airport 191.1 km