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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 - Pornic Distancia
Saint-Nazaire 24.6 km
Saint-Sauveur 51.5 km
Nantes Atlantique aeropuerto 55.0 km
La Roche-sur-Yon 91.4 km
Rennes Saint-Jacques aeropuerto 115.2 km
Le Talut 126.4 km
Phare de Chassiron 140.0 km
La Rochelle Aeropuerto 143.9 km
Lorient South Brittany aeropuerto 157.7 km
Dinard/Pleurtuit 165.1 km
Groix 167.4 km
Angers 170.7 km
Saint-Brieuc Armor 179.9 km
Laval Aeropuerto 183.2 km
Angers-Loire aeropuerto 205.5 km
Niort 208.4 km
Jersey Aeropuerto 235.7 km
Lannion Aeropuerto 238.3 km
Ploumanac'h 245.5 km
Quimper 249.9 km
Morlaix/Ploujean 253.6 km
Cognac - Châteaubernard Air Base 254.7 km
Penmarch 264.0 km
Guernsey aeropuerto 265.4 km
Le Mans/Arnage 272.3 km
Poitiers/Biard 273.3 km
Landivisiau 278.3 km
Alencon/Valframbert 286.4 km
Cabo Ferret 290.3 km
Alderney Channel Is 291.3 km
Cabo de la Hague 291.7 km
Lanvéoc/Poulmic 292.2 km
Cherbourg - Maupertus aeropuerto 292.3 km
Caen 295.8 km
Bordeaux/Merignac 297.5 km
Guipavas 298.4 km
Angoulême - Cognac aeropuerto 300.1 km
Brignogan-Plage 304.6 km
Cazaux 305.2 km
Punta de Raz 310.9 km
Biscarrosse 311.7 km
Tours/St Symphorien 317.1 km
Deauville-Saint-Gatien aeropuerto 356.7 km
Deauville-Saint-Gatien 356.8 km
Sainte-Adresse 359.9 km
Ouessant 362.6 km
Le Havre/Octeville 363.9 km
Aérodrome de Blois 374.3 km
Isla de Pórtland 382.0 km
Bergerac/Roumanier 386.6 km
Limoges/Bellegarde 390.2 km
Dax 396.4 km
Mont-de-Marsan 396.6 km
Punta de St. Catherine 397.7 km
Châteaudun 402.4 km
Biarritz/Anglet 409.1 km
Bournemouth 410.9 km
Ciboure 414.8 km
San Sebastián / Fuenterrabía 417.5 km
San Sebastián / Igueldo 422.1 km
Romorantin-Lanthenay 422.3 km
Plymouth MtBatten 426.0 km
Evreux/Fauville 426.4 km
Punta Galea Golf 426.8 km
Châteauroux 428.4 km
Chartres 428.6 km
Exeter Aeropuerto 429.7 km
Southampton Aeropuerto 429.9 km
Bilbao/Sondica 432.2 km
Thorney Island 433.7 km
Elgóibar 434.2 km
Onton 435.4 km
Dunkeswell Aeropuerto 437.0 km
Yeovil 437.8 km
Orleans 441.0 km
Agen/La Garenne 442.9 km
Santander 444.4 km
Rouen/Boos 445.2 km
Santander / Parayas 451.3 km
Brive-la-Gaillarde 453.4 km
MoD Boscombe Down 454.1 km
North Wyke 454.2 km
Pau-Pirineos aeropuerto 454.3 km
Middle Wallop 454.5 km
Larkhill 457.4 km
Brive- Souillac aeropuerto 460.3 km
Brighton City aeropuerto 462.1 km
Guéret Aeropuerto 462.5 km
Gourdon 469.3 km
Liscombe 473.3 km
Cardinham 473.9 km
Dieppe 475.8 km
RAF Odiham 478.2 km
Brístol aeropuerto 481.3 km
Culdrose Airfield 483.1 km
Aérodrome d'Auch 484.7 km
Farnborough 488.6 km
Lyneham Airfield 490.0 km
Newquay Cornwall aeropuerto 491.5 km
Tarbes/Ossun 494.6 km