UK CAPE forecast GFS map chart animation for the next 9 days

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What on earth is CAPE ?

Some people love thunderstorms and some hate them... it's pretty much a way of life.

However, during summer months the risk of large and damaging thunderstorms and tornadoes increases. These charts go out to the next 16 days showing you the risk of thunderstorms and tornadoes across the country.

Convective Available Potential Energy (CAPE) is measure of the amount of energy available for convection. CAPE is directly related to the maximum potential vertical speed within an updraft; thus, higher values indicate greater potential for severe weather. Convective Available Potential Energy (CAPE) and Lifted Index (LI) charts are used to forecast the likelihood of thunderstorms. Forecast CAPE values are shown by the coloured shading with yellows, oranges and reds indicating a progressively increasing chance of thunderstorms. LI is shown by the contours with values below 0 indicating greater instability and an increasing chance of thunderstorms

We create and upload these images four times a day and begin updating at 6.30am, 12.30pm, 6.30pm and 12.30am (BST) and take approx 110 mins to complete.
Well, you did ask !


South West Warnings

    No weather warnings have been issued for the South West at this time.

On This Day ...
Record Temperatures On This Date
Record High
18.1°C- 2014
Record Low
-2.5°C - 2007

Moon & Sun Forecast

Sunrise
6:15 am
Sunset
8:02 pm
Day Length
13:47 hrs
Waxing Crescent, Moon at 4 days in cycle
Moonrise
8:28 am
Moonset
1:35 am
Visibility
24%
There will be 3 mins 53sec more daylight tomorrow
Moon Phase:Waxing Crescent

Today's extremes

Saturday 13 April
High Temp11.1°C12:56 AM
Low Temp11.0°C12:00 AM
Rain Rate0.00 mm/hr00:00 AM
Max Gust11.5 mph2:32 AM
Min Windchill11.0°C12:00 AM