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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 - Île-de-Bréhat Distance
Saint-Brieuc Armor 39.0 km
Ploumanac'h 52.0 km
Lannion Airport 53.1 km
Guernsey Airport 78.7 km
Morlaix/Ploujean 95.1 km
Jersey Airport 97.9 km
Dinard/Pleurtuit 108.0 km
Lorient South Brittany Airport 126.6 km
Alderney Channel Is 131.2 km
Landivisiau 133.1 km
Groix 144.5 km
Brignogan-Plages 149.6 km
Cap de la Hague 152.9 km
Quimper 162.3 km
Guipavas 163.8 km
Rennes- Saint-Jacques Airport 165.6 km
Lanvéoc/Poulmic 172.8 km
Le Talut 174.6 km
Penmarch 191.7 km
Cherbourg - Maupertus Airport 192.1 km
Saint-Nazaire 194.7 km
Isle of Portland 195.2 km
Plymouth MtBatten 208.6 km
Pointe du Raz 213.2 km
Exeter Airport 214.6 km
Dunkeswell Airport 225.0 km
Ushant 231.8 km
North Wyke 235.4 km
Yeovil 242.5 km
Nantes Atlantique Airport 244.4 km
Saint-Sauveur 250.3 km
Bournemouth 251.2 km
Liscombe 257.0 km
Cardinham 261.0 km
Laval Airport 267.2 km
St. Catherine's Point 270.2 km
RM Chivenor 279.2 km
Bristol / Lulsgate 283.3 km
Newquay Airport 283.8 km
Cardiff Airport 285.6 km
RNAS Culdrose 286.2 km
Caen 286.3 km
St Athan 288.2 km
Southampton Airport 289.3 km
MoD Boscombe Down 292.8 km
Larkhill 293.5 km
Camborne 299.2 km
La Roche-sur-Yon 299.3 km
Middle Wallop 301.5 km
Angers 306.3 km
RAF Lyneham 315.6 km
Thorney Island 318.2 km
Mumbles 321.1 km
Angers 331.8 km
Fairford Airport 342.6 km
Alencon/Valframbert 348.2 km
Sainte-Adresse 349.0 km
RAF Odiham 350.7 km
Gloucestershire Airport 351.0 km
Le Havre/Octeville 351.6 km
Pembrey Burrows 352.9 km
Deauville-Saint-Gatien AP 357.2 km
Deauville-Saint-Gatien 357.2 km
Phare de Chassiron 358.4 km
La Rochelle Airport 358.9 km
Credenhill 360.2 km
RAF Brize Norton 360.2 km
Sennybridge 364.0 km
RAF Little Rissington 365.1 km
Farnborough 367.6 km
Le Mans/Arnage 370.5 km
Benson 373.9 km
Brighton City Airport 374.4 km
Shobdon 378.3 km
Oxford Airport 381.3 km
Pershore 382.4 km
Scilly St Mary 385.9 km
Milford Haven 390.2 km
High Wycombe 399.2 km
Charlwood 400.3 km
Trawscoed 402.3 km
Niort 404.0 km
Aberporth 404.2 km
Gatwick Airport 404.7 km
Heathrow Airport 407.6 km
Northolt 413.8 km
Kenley 423.5 km
Birmingham Airport 424.5 km
Cosford 428.2 km
Cosford 428.5 km
Cosford 428.5 km
Coleshill 429.9 km
Church Lawford 432.2 km
Herstmonceux 433.4 km
St James's Park 435.0 km
Biggin Hill 436.1 km
Lake Vyrnwy 436.6 km
Shawbury 440.7 km
Rothamsted Park 441.2 km
Woburn 442.2 km