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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 - Chesterfield Distance
Coal Aston Airfield 7.8 km
Nottingham/Watnall 31.6 km
East Midlands Airport 46.6 km
Emley Moor transmitting station 50.0 km
Doncaster Airport 53.2 km
Thorncliffe 63.4 km
Leeds Bradford Intl. Airport 75.1 km
Bingley 81.1 km
Coleshill 88.6 km
Linton-On-Ouse 91.7 km
Birmingham Airport 94.0 km
Scampton 96.8 km
Manchester 97.3 km
Church Lawford 98.3 km
Barkston 99.2 km
Waddington 100.5 km
Cranwell 104.4 km
Topcliffe 107.6 km
Rostherne 107.6 km
Cosford 117.3 km
Leeming 119.4 km
Humberside 125.0 km
Wittering 127.6 km
Leconfield 130.0 km
Stonyhurst 134.6 km
Pershore 138.7 km
Coningsby 140.1 km
Durham Tees Valley Airport 141.6 km
Shawbury 147.3 km
Fylingdales 151.3 km
Bedford 153.6 km
London Oxford Airport 155.9 km
RAF Little Rissington 156.2 km
Cranfield Airport 157.1 km
Liverpool AP 159.9 km
Loftus Samos 160.0 km
Woburn 163.1 km
RAF Brize Norton 165.4 km
Donna Nook 168.1 km
Bridlington 169.3 km
Gloucestershire Airport 170.8 km
Warton Aerodrome Airport 172.0 km
Hawarden 174.6 km
RAF Holbeach 177.5 km
Fairford Airport 178.1 km
Benson 183.3 km
Warcop Range 185.5 km
High Wycombe 185.7 km
Crosby 186.1 km
Woodvale 186.1 km
Wainfleet 188.4 km
Blackpool Airport 190.0 km
Luton Airport 191.3 km
Shobdon 195.8 km
Great Dun Fell 198.1 km
Rothamsted Park 198.2 km
Shap 199.3 km
Credenhill 200.2 km
Newcastle Airport 202.8 km
MoD Lyneham 202.9 km
Albemarle 205.1 km
Cambridge 212.0 km
Northolt 219.0 km
Heathrow Airport 223.4 km
Walney 226.5 km
RAF Odiham 228.4 km
Farnborough 228.8 km
Marham 230.1 km
Larkhill 230.2 km
Filton 231.0 km
Rhyl 231.9 km
Middle Wallop 232.4 km
MoD Boscombe Down 232.9 km
Mildenhall Royal Air Force 233.1 km
Lake Vyrnwy 234.5 km
London Stansted Airport 237.3 km
Spadeadam II 238.3 km
Spadeadam 238.3 km
Lakenheath 238.8 km
St James's Park 240.3 km
Bala 243.2 km
Boulmer 243.8 km
Carlisle Lake District Airport 244.5 km
Keswick 246.6 km
Redesdale Camp 247.4 km
Bristol / Lulsgate 251.6 km
London City Airport 252.7 km
Carlisle 255.4 km
Andrewsfield Aerodrome 256.0 km
Southampton Airport 259.7 km
Kenley 260.9 km
Biggin Hill 266.3 km
Charlwood 268.2 km
Gatwick Airport 269.5 km
Gravesend Broadness 275.4 km
Thorney Island 275.4 km
Bournemouth 276.5 km
Sennybridge 277.1 km
Capel Curig 280.5 km
St Bees Head 282.7 km