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Features
![A row of pastel beach huts with bright blue skies above.](https://ichef.bbci.co.uk/news/{width}/cpsprodpb/6C30/production/_123769672_p0bwdyzn.jpg)
Weather for the Week Ahead
The week ahead is looking mostly dry, sunny and warm. Tomasz Schafernaker has the latest forecast.
![Spring equinox](https://ichef.bbci.co.uk/news/{width}/cpsprodpb/D894/production/_117644455_p09bbfjt.jpg)
Vernal equinox marks the beginning of spring
The vernal equinox marks the beginning of astronomical spring, where day and night are almost equal in length.
![Illustration of a mountain with cloud on one side and warm air on the other](https://ichef.bbci.co.uk/news/{width}/cpsprodpb/9BF8/production/_117382993_p098ps4s.jpg)
What is the foehn effect?
The foehn effect is responsible for bringing warmer and drier air to the lee side of a mountain.
![BBC presenter Sarah Keith-Lucas](https://ichef.bbci.co.uk/news/{width}/cpsprodpb/C070/production/_123746294_p0bw1d8d.jpg)
Climate Check
As the world's temperature warms, severe rainfall events are becoming more likely - and weather patterns like La Niña could be disrupted.
![UK](https://ichef.bbci.co.uk/news/{width}/cpsprodpb/183B/production/_113830260_p08mwynp.jpg)
UV – how to stay safe in the sun
BBC Weather's Helen Willetts explains the different factors that affect the strength of UV radiation.