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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.


Stations météo à proximité - Romsey Distance
Southampton Aéroport 13.1 km
Middle Wallop 20.7 km
MoD Boscombe Down 36.0 km
Larkhill 42.7 km
Bournemouth 44.9 km
St. Catherine's Point 49.0 km
Thorney Island 65.2 km
RAF Odiham 66.3 km
RAF Lyneham 81.0 km
Benson 82.8 km
Fairford Aéroport 84.9 km
Farnborough 86.5 km
RAF Brize Norton 86.9 km
Aéroport d'Oxford Kidlington 96.7 km
RAF Little Rissington 100.4 km
High Wycombe 108.9 km
Île de Portland 119.5 km
Gloucestershire Aéroport 126.2 km
Londres-Heathrow (Aéroport) 127.5 km
Yeovil 128.0 km
Northolt 132.6 km
Shoreham (Aéroport) 134.6 km
Charlwood 140.7 km
Pershore 143.5 km
Bristol (Aéroport) 144.6 km
Londres-Gatwick (Aéroport) 145.9 km
Cherbourg (Aéroport) 148.4 km
Hague 149.6 km
Woburn 151.3 km
Église Lawford 154.0 km
Cranfield Aéroport 154.9 km
Rothamsted Park 155.1 km
Londres-Luton (Aéroport) 158.9 km
Kenley 159.0 km
St James's Park 161.3 km
Alderney Channel Is 161.9 km
Birmingham Aéroport 165.6 km
Coleshill 168.4 km
Biggin Hill 173.1 km
Bedford 176.7 km
Londres-City (Aéroport) 180.1 km
Credenhill 190.9 km
Dunkeswell (Aéroport) 196.1 km
Herstmonceux 200.6 km
Cosford 204.0 km
Cosford 205.8 km
Cosford 205.8 km
Midlands de l'Est Aéroport 206.4 km
Shobdon 210.1 km
Cardiff Aéroport 212.1 km
Jersey Aéroport 212.1 km
Guernesey Aéroport 212.6 km
Wittering 214.0 km
Exeter Aéroport 215.8 km
Londres-Stansted (Aéroport) 215.8 km
St Athan 222.3 km
Nottingham/Watnall 226.5 km
Cambridge 229.7 km
Caen 231.0 km
Liscombe 235.9 km
Le Havre/Octeville 237.6 km
Andrewsfield Aerodrome 238.1 km
Sainte-Adresse 238.8 km
Shawbury 241.2 km
Barkston 243.2 km
Thorncliffe 245.0 km
Londres-Southend (Aéroport) 251.2 km
Cranwell 252.7 km
Deauville-Saint-Gatien 257.1 km
Deauville-Saint-Gatien AP 257.3 km
Coal Aston Airfield 258.4 km
Shoeburyness 264.9 km
Waddington 265.8 km
Sennybridge 266.3 km
L'armée de l'air royale de Mildenhall 267.6 km
Lydd (Aéroport) 269.7 km
North Wyke 270.1 km
Dinard/Pleurtuit 274.8 km
Coningsby 275.9 km
Holbeach Air Weapons Range 277.2 km
Manchester 278.0 km
Scampton 278.0 km
Lakenheath 278.4 km
Doncaster Aéroport 282.4 km
Rostherne 282.7 km
Mumbles 285.8 km
Émetteur d'Emley Moor 293.2 km
Marham 294.1 km
Hawarden 294.7 km
Lake Vyrnwy 295.5 km
Royal Marines Base Chivenor 297.1 km
Wattisham Aéroport 299.9 km
Plymouth MtBatten 301.8 km
Liverpool AP 302.5 km
Wainfleet All Saints 305.0 km
Dieppe 310.4 km
Saint-Brieuc Armor 312.1 km
Trawscoed 313.3 km
Humberside 315.7 km
Langdon Bay 315.8 km