These are the latest NCEP GFS model weather charts at Metcheck.
The maps below show a variety of weather variables and are in 6 hour intervals out to 192 hours then every 12 hours out to 384 hours ahead. The images begin updating at 4.30am, 10.30am, 4.30pm and 10.30pm (BST) and take approx 90 mins to complete.
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Sea Level Pressure - Plotted using isobars displaying the pressure levels in contours 3hr Rainfall - Displays sea level pressure and the accumulated 3hr rainfall amounts 2m Temperature - The forecast temperature in centigrade at 2m above ground Freezing level - This is also known as the zero degree isotherm and shows the height at which all air above is freezing or below Rain/Snow - This shows you whether precipitation will fall as sleet or.... snow. 850mb Temperature - This is the temperature of the air at the 850mb pressure level. This is the height at which day and nighttime heating have no effect on the atmosphere CAPE - This is the amount of convective potential of the atmosphere for the creation of thunderstorms Cloud Cover/Thickness - This displays the cloud cover, rainfall and thickness of the air showing how precipitation is likely to fall. 10m Wind Speed/Gust - This is the forecast wind direction and gust wind speed at 10m above the ground
Ensembles are clever things. If you ask a weather forecaster whether it will rain next week, they will probably say "Well, it may do. Or it may not...". That really isn't very helpful, so this is where ensembles come into play.
Every 6 hours, the GFS weather model is run not once, but 20 times and this gives us a fantastic tool to see how many of the model runs agree with each other. Click on the tools below for more information on ensemble forecasting.
Weather models are funny things. Especially then it comes to forecasting the track and intensity of areas of low pressure, tropical storms and hurricanes.
The Metcheck cyclone tracker will show you the forecast track/intensity of weather systems which we are covering. The chart below shows you a snapshot of where we expect the centre of the system to be every 6 hours.
The data is updated at 0.00am, 6.00am, 12.00pm and 6.00pm (BST) and take approx 1 min to complete.