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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.


Estaciones meteorológicas cercanas - Chelmsford Distancia
Andrewsfield Aerodrome 18.2 km
Londres-Stansted aeropuerto 30.9 km
Londres-Southend aeropuerto 31.2 km
Shoeburyness 44.8 km
la Ciudad de Londres aeropuerto 53.2 km
Cambridge 60.8 km
Biggin Hill 65.9 km
Wattisham aeropuerto 69.8 km
Mildenhall Royal Air Force 70.0 km
St. James's Park 71.2 km
Lakenheath 76.9 km
Kenley 78.4 km
Rothamsted Park 92.2 km
Londres-Luton aeropuerto 94.3 km
Herstmonceux 95.3 km
Londres-Gatwick aeropuerto 97.2 km
Lydd aeropuerto 101.2 km
Charlwood 101.6 km
Northolt 102.0 km
Marham 102.6 km
Londres-Heathrow aeropuerto 106.0 km
Manston 107.2 km
Bedford 118.7 km
Langdon Bay 118.9 km
Woburn 122.9 km
Cranfield Aeropuerto 126.4 km
Brighton City aeropuerto 130.4 km
Holbeach Air Weapons Range 132.1 km
Norwich Weather Centre 138.8 km
High Wycombe 141.1 km
Wittering 142.2 km
Farnborough 146.1 km
Wainfleet All Saints 152.4 km
Weybourne 153.8 km
Coningsby 166.0 km
RAF Odiham 166.5 km
Boulogne-sur-Mer 168.2 km
Benson 174.7 km
Barkston 179.1 km
Cranwell 180.4 km
Thorney Island 185.4 km
Le Touquet-Paris-Plage 186.3 km
Waddington 193.5 km
Donna Nook 197.0 km
Oxford aeropuerto 199.2 km
Scampton 207.9 km
Church Lawford 211.9 km
Dieppe 212.4 km
Dunkerque 221.3 km
Humberside 225.1 km
Southampton Aeropuerto 227.6 km
RAF Brize Norton 227.6 km
Región de las Tierras Medias Orientales Aeropuerto 234.2 km
Abbeville 234.2 km
Punta de St. Catherine 234.7 km
Middle Wallop 235.5 km
Nottingham/Watnall 238.0 km
RAF Little Rissington 240.8 km
Le Havre/Octeville 248.6 km
Fairford Aeropuerto 251.3 km
Sainte-Adresse 252.6 km
Coleshill 253.5 km
Koksijde 253.7 km
Doncaster Aeropuerto 253.8 km
MoD Boscombe Down 254.7 km
Birmingham Aeropuerto 257.6 km
Leconfield 258.9 km
Larkhill 259.2 km
Deauville-Saint-Gatien 265.6 km
Deauville-Saint-Gatien aeropuerto 265.8 km
Bridlington 272.7 km
Rouen/Boos 273.5 km
Ostende Aeropuerto 273.7 km
Coal Aston Airfield 274.2 km
Lyneham Airfield 274.9 km
Bournemouth 277.0 km
Pershore 282.1 km
Gloucestershire Aeropuerto 293.0 km
Caen 301.6 km
Zeebrugge 307.5 km
Beitem 309.6 km
Beauvais/Tille 312.0 km
Thorncliffe 313.6 km
Evreux/Fauville 313.7 km
Euro Platform 314.0 km
Albert Aeropuerto 316.4 km
Emley Moor transmitting station 316.4 km
Cherbourg - Maupertus aeropuerto 316.6 km
Méaulte 316.9 km
Fylingdales 319.1 km
Lille-Lesquin aeropuerto 320.2 km
Linton-On-Ouse 320.6 km
Cosford 322.1 km
Cosford 324.7 km
Cosford 324.7 km
P11-b Sea 326.6 km
Leeds Bradford aeropuerto 334.5 km
Cormeilles 342.6 km
Topcliffe 343.2 km
K13-A 347.8 km