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
30.3°C- 2012
Record Low
2.2°C - 2007

Moon & Sun Forecast

Sunrise
5:19 am
Sunset
9:08 pm
Day Length
15:49 hrs
Waning Gibbous, Moon at 18 days in cycle
Moonrise
10:56 pm
Moonset
8:58 am
Visibility
88%
There will be 2 min 47sec less daylight tomorrow
Moon Phase:Waning Gibbous

Climate Extremes

Wednesday 24 July
High Temp19.9°C12:13 PM
Low Temp13.1°C3:42 AM
Rain Today 0.4 mm10:50 AM
High UV10.0 11:45 AM
Max Gust16.1 mph12:20 PM
Min Windchill11.1°C12:00 AM
So far this month
High Temp27.9°C19/7/2024
Low Temp6.5°C8/7/2024
Wettest Day15.6mm15/7/2024
High UV16.010/7/2024
Max Gust30.9mph4/7/2024
Min Windchill6.5°C8/7/2024
So far this year
High Temp28.2°C26/6/2024
Low Temp-8.0°C18/1/2024
Wettest Day23.4mm22/5/2024
High UV16.030/5/2024
Max Gust52.9mph2/1/2024
Min Windchill-10.8°C18/1/2024
All time records
High Temp35.5°C18/7/2022
Low Temp-10.8°C20/12/2010
Wettest Day80.2mm20/7/2007
High UV18.013/6/2022
Max Gust62.1mph23/2/2017
Min Windchill-21.1°C15/02/1963