World

Europe



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 - Rohan Distance
Saint-Brieuc Armor 53.1 km
Lorient South Brittany Airport 74.7 km
Dinard/Pleurtuit 95.3 km
Groix 95.5 km
Le Talut 100.4 km
Saint-Nazaire 106.3 km
Lannion Airport 110.2 km
Rennes- Saint-Jacques Airport 113.1 km
Ploumanac'h 116.7 km
Morlaix/Ploujean 132.7 km
Jersey Airport 141.8 km
Guernsey Airport 152.9 km
Quimper 158.2 km
Saint-Sauveur 158.9 km
Nantes Atlantique Airport 162.9 km
Landivisiau 164.3 km
Penmarch 182.4 km
Brignogan-Plages 189.1 km
Lanvéoc/Poulmic 190.2 km
Guipavas 190.4 km
Alderney Channel Is 193.4 km
Cap de la Hague 204.8 km
La Roche-sur-Yon 215.1 km
Pointe du Raz 220.8 km
Laval Airport 223.4 km
Cherbourg - Maupertus Airport 226.5 km
Angers 246.6 km
Ushant 260.2 km
Phare de Chassiron 269.6 km
La Rochelle Airport 272.4 km
Isle of Portland 274.5 km
Angers 277.2 km
Caen 284.6 km
Plymouth MtBatten 296.6 km
Exeter Airport 305.7 km
Dunkeswell Airport 315.3 km
Bournemouth 318.9 km
Alencon/Valframbert 319.9 km
St. Catherine's Point 323.2 km
Niort 326.1 km
North Wyke 326.2 km
Yeovil 326.4 km
Le Mans/Arnage 328.7 km
Cardinham 344.5 km
Liscombe 348.4 km
Southampton Airport 349.2 km
Sainte-Adresse 351.8 km
Le Havre/Octeville 355.1 km
Deauville-Saint-Gatien AP 355.4 km
Deauville-Saint-Gatien 355.5 km
RNAS Culdrose 357.9 km
MoD Boscombe Down 362.3 km
Newquay Airport 363.3 km
Larkhill 364.2 km
Thorney Island 367.2 km
Middle Wallop 367.4 km
Bristol / Lulsgate 368.7 km
RM Chivenor 369.7 km
Camborne 372.3 km
Cardiff Airport 376.0 km
Poitiers/Biard 377.5 km
St Athan 378.9 km
Cognac - Châteaubernard Air Base 380.4 km
RAF Lyneham 391.4 km
Tours/St Symphorien 393.2 km
RAF Odiham 406.1 km
Mumbles 412.5 km
Brighton City Airport 412.5 km
Fairford Airport 416.1 km
Cap Ferret 416.9 km
Farnborough 420.5 km
Angoulême - Cognac Intl. Airport 420.8 km
Bordeaux/Merignac 427.0 km
Gloucestershire Airport 430.5 km
RAF Brize Norton 430.9 km
Cazaux 432.3 km
Benson 436.0 km
Biscarrosse 437.6 km
RAF Little Rissington 438.1 km
Charlwood 442.7 km
Aérodrome de Blois 443.2 km
Pembrey Burrows 443.7 km
Scilly St Mary 445.3 km
Gatwick Airport 446.5 km
Credenhill 446.6 km
Oxford Airport 448.6 km
Evreux/Fauville 454.0 km
Sennybridge 454.9 km
High Wycombe 457.2 km
Heathrow Airport 457.9 km
Châteaudun 460.1 km
Pershore 461.1 km
Rouen/Boos 461.7 km
Herstmonceux 464.0 km
Northolt 464.6 km
Shobdon 465.5 km
Kenley 466.2 km
Chartres 475.2 km
Dieppe 476.3 km
Biggin Hill 477.4 km