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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.


Stazioni meteo nelle vicinanze - Truro Distanza
Newquay Airport 22.0 km
RNAS Culdrose 29.5 km
Camborne 29.9 km
Cardinham 51.0 km
Plymouth MtBatten 104.1 km
RM Chivenor 136.3 km
North Wyke 140.3 km
San Mary di Scilly 144.0 km
Milford Haven 160.8 km
Pembrey Burrows 179.6 km
Liscombe 186.0 km
The Mumbles 188.3 km
Exeter Aeroporto 190.9 km
Brignogan-Plage 191.2 km
Ouessant 195.9 km
Guipavas 211.8 km
Dunkeswell Aeroporto 212.5 km
Landivisiau 215.4 km
Aberporth 215.7 km
St Athan 220.9 km
Lanveoc/Poulmic 228.5 km
Cardiff Aeroporto 228.7 km
Morlaix/Ploujean 228.9 km
Ploumanac'h 236.2 km
Lannion Aeroporto 242.5 km
Pointe du Raz 248.4 km
Sennybridge 257.1 km
Trawscoed 262.8 km
Quimper 270.9 km
Johnstown Castle 278.1 km
Yeovil 281.6 km
Penmarch 282.3 km
Aberdaron 283.2 km
Guernsey Airport 287.4 km
Aeroporto di Bristol 288.4 km
Isola di Portland 290.9 km
Armatura del San-Brieuc 310.4 km
Waterford Aeroporto 312.1 km
Alderney Channel Is 322.7 km
Credenhill 322.8 km
Shobdon 328.0 km
Lago Vyrnwy 328.8 km
Lorient South Brittany Airport 334.4 km
Groix 336.3 km
Bala 337.1 km
Baliato di Jersey Aeroporto 337.4 km
Valle 337.7 km
Capel Curig 339.8 km
Raf Mona 342.3 km
Cap de la Hague 352.0 km
Oak Park 353.9 km
Bournemouth 362.9 km
RAF Lyneham 367.7 km
Gloucestershire Aeroporto 369.8 km
Dublino Csmt Aero 371.3 km
Rhyl 375.5 km
Larkhill 376.9 km
Dublino Aeroporto 377.1 km
Dinard/Pleurtuit 380.2 km
MoD Boscombe Down 381.2 km
Le Talut 386.3 km
Shawbury 388.1 km
Roches Point 395.3 km
Fairford Aeroporto 396.3 km
Pershore 396.6 km
Hawarden 397.3 km
Middle Wallop 400.4 km
Cherbourg - Maupertus Airport 404.0 km
Cosford 404.7 km
Cosford 404.7 km
Cosford 406.1 km
Southampton Aeroporto 412.7 km
RAF Little Rissington 414.4 km
St. Catherine's Point 419.1 km
Aeroporto Internazionale di Cork 420.6 km
Liverpool AP 421.0 km
RAF Brize Norton 421.3 km
Crosby 423.0 km
Aeroporto dell'Isola di Man 427.7 km
Aeroporto di Rennes-Saint-Jacques 441.6 km
Birmingham Aeroporto 442.8 km
Mullingar 445.6 km
Gurteen 448.8 km
Coleshill 449.5 km
Blackpool Aeroporto 450.8 km
Oxford Airport 451.1 km
Rostherne 455.6 km
Warton Aerodrome Airport 457.0 km
Saint-Nazaire 458.0 km
Manchester 462.0 km
Benson 465.5 km
Thorncliffe 467.9 km
Glenanne 469.8 km
Walney 473.7 km
Church Lawford 475.7 km
Ballyhaise 489.5 km
Belfast/Porto 490.9 km
Stonyhurst 491.0 km
Saint-Sauveur 496.9 km
St Bees Head 499.9 km