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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.


Stations météo à proximité - Helston Distance
Royal Naval Air Station Culdrose 1.1 km
Camborne 15.8 km
Newquay Cornouailles (Aéroport) 49.8 km
Cardinham 81.3 km
St Mary de Scilly 116.5 km
Plymouth MtBatten 131.0 km
Royal Marines Base Chivenor 166.6 km
North Wyke 170.0 km
Ouessant 179.0 km
Milford Haven 180.9 km
Brignogan-Plages 186.8 km
Guipavas 204.4 km
Pembrey Burrows 207.0 km
Landivisiau 212.4 km
Liscombe 216.2 km
Mumbles 217.9 km
Exeter Aéroport 219.5 km
Lanvéoc/Poulmic 219.7 km
Morlaix/Ploujean 230.5 km
Pointe du Raz 235.0 km
Aberporth 240.3 km
Dunkeswell (Aéroport) 241.5 km
Ploumanac'h 243.7 km
Lannion Aéroport 249.1 km
St Athan 251.3 km
Cardiff Aéroport 259.0 km
Quimper 264.0 km
Penmarch 272.4 km
Johnstown Castle 280.7 km
Sennybridge 286.7 km
Trawscoed 290.6 km
Aberdaron 305.2 km
Guernesey Aéroport 305.5 km
Waterford Aéroport 308.7 km
Yeovil 310.3 km
Île de Portland 317.2 km
Bristol (Aéroport) 318.2 km
Saint-Brieuc Armor 319.4 km
Groix 334.1 km
Lorient-Bretagne-Sud (Aéroport) 334.1 km
Alderney Channel Is 343.8 km
Credenhill 353.1 km
Jersey Aéroport 354.7 km
Oak Park 356.1 km
Lake Vyrnwy 357.4 km
Shobdon 358.3 km
Vallée 360.6 km
Bala 365.2 km
Raf Mona 366.0 km
Capel Curig 366.2 km
Hague 373.3 km
Dublin Csmt aérien 379.1 km
Point de Roches 382.5 km
Le Talut 384.5 km
Dublin Aéroport 386.8 km
Bournemouth 390.0 km
Dinard/Pleurtuit 393.3 km
RAF Lyneham 397.1 km
Gloucestershire Aéroport 399.9 km
Rhyl 403.2 km
Larkhill 405.4 km
Cork (Aéroport) 407.4 km
MoD Boscombe Down 409.6 km
Shawbury 418.1 km
Cherbourg (Aéroport) 425.3 km
Fairford Aéroport 425.8 km
Hawarden 426.4 km
Pershore 426.9 km
Middle Wallop 428.6 km
Cosford 435.1 km
Cosford 435.1 km
Cosford 436.5 km
Southampton Aéroport 439.9 km
RAF Little Rissington 444.1 km
Gurteen 444.7 km
St. Catherine's Point 445.0 km
Mullingar 447.7 km
Aéroport du Ronaldsway 449.2 km
Liverpool AP 450.1 km
RAF Brize Norton 450.8 km
Crosby 451.5 km
Rennes-Bretagne (Aéroport) 452.5 km
Saint-Nazaire 462.7 km
Birmingham Aéroport 473.1 km
Blackpool Aéroport 479.0 km
Glenanne 479.6 km
Coleshill 479.8 km
Aéroport d'Oxford Kidlington 480.6 km
Rostherne 485.3 km
Warton Aerodrome (Aéroport) 485.5 km
Sherkin 486.6 km
Manchester 491.9 km
Ballyhaise 493.8 km
Benson 494.4 km
Saint-Sauveur 497.8 km
Thorncliffe 498.1 km
Shannon Aéroport 499.5 km
Walney 500.9 km
Belfast/port 505.1 km
Église Lawford 505.8 km