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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 - Dartmouth Distance
Exeter Airport 44.0 km
North Wyke 55.3 km
Plymouth MtBatten 59.9 km
Dunkeswell Airport 65.3 km
Liscombe 77.8 km
RM Chivenor 100.1 km
St Athan 114.8 km
Cardiff Airport 115.7 km
Cardinham 121.3 km
Yeovil 126.0 km
Isle of Portland 127.0 km
Mumbles 138.8 km
Bristol / Lulsgate 147.0 km
Guernsey Airport 152.1 km
Newquay Airport 157.3 km
Alderney Channel Is 170.9 km
Pembrey Burrows 171.8 km
Ploumanac'h 172.7 km
Lannion Airport 181.9 km
Sennybridge 187.1 km
RNAS Culdrose 189.3 km
Camborne 193.8 km
Cap de la Hague 198.1 km
Morlaix/Ploujean 199.8 km
Bournemouth 199.8 km
Jersey Airport 201.3 km
Brignogan-Plages 206.4 km
Credenhill 208.1 km
Landivisiau 215.4 km
RAF Lyneham 216.5 km
Larkhill 218.3 km
Milford Haven 219.1 km
Saint-Brieuc Armor 221.2 km
Trawscoed 221.6 km
Shobdon 221.8 km
MoD Boscombe Down 221.9 km
Aberporth 223.0 km
Gloucestershire Airport 230.7 km
Guipavas 233.9 km
Middle Wallop 240.1 km
Fairford Airport 246.4 km
Cherbourg - Maupertus Airport 249.0 km
Southampton Airport 249.7 km
Lanvéoc/Poulmic 252.3 km
St. Catherine's Point 255.2 km
Pershore 261.4 km
Dinard/Pleurtuit 261.8 km
Lake Vyrnwy 263.3 km
Ushant 266.7 km
RAF Little Rissington 267.0 km
RAF Brize Norton 270.6 km
Quimper 275.3 km
Bala 280.4 km
Shawbury 287.3 km
Cosford 288.4 km
Cosford 288.4 km
Cosford 289.0 km
Pointe du Raz 290.6 km
Lorient South Brittany Airport 291.9 km
Aberdaron 295.6 km
Oxford Airport 299.4 km
Penmarch 299.8 km
Thorney Island 300.1 km
Groix 303.8 km
Capel Curig 304.3 km
Scilly St Mary 306.8 km
Birmingham Airport 308.6 km
RAF Odiham 308.7 km
Benson 308.9 km
Coleshill 315.1 km
Hawarden 316.5 km
Rhyl 319.6 km
Farnborough 329.1 km
Rennes- Saint-Jacques Airport 329.6 km
Raf Mona 331.4 km
Church Lawford 333.3 km
Valley 335.4 km
Liverpool AP 337.9 km
High Wycombe 341.9 km
Le Talut 345.6 km
Crosby 351.1 km
Thorncliffe 353.4 km
Rostherne 356.9 km
Manchester 360.2 km
Heathrow Airport 369.4 km
East Midlands Airport 370.3 km
Brighton City Airport 370.8 km
Caen 373.5 km
Northolt 373.9 km
Saint-Nazaire 376.3 km
Woburn 378.6 km
Cranfield Airport 379.9 km
Warton Aerodrome Airport 381.7 km
Blackpool Airport 381.7 km
Charlwood 382.8 km
Johnstown Castle 387.9 km
Gatwick Airport 388.0 km
Nottingham/Watnall 390.4 km
Rothamsted Park 392.3 km
Luton Airport 394.5 km