Home
Weather Dublin
WeatherRadar
RainfallRadar
TemperatureRadar
WindRadar
LightningRadar
Weather News
Editor's Pick
Discover the app
Weather widget
Contact us
Apps
    Home / Editor's Pick /

    Check our LightningRadar: How do thunderstorms develop?

11:00
29 March 2023

Check our LightningRadar
How do thunderstorms develop?

Lightning

Across Ireland, thunderstorms are likely to develop during the day. But how do thunderstorms actually develop?

They begin to form when warm air lies under colder air in an unstable atmosphere. The warm air will then rise quickly and condense into water droplets to form a cumulonimbus cloud.

Within the cloud, the warm air and water droplets continue to rise and will eventually freeze into positively charged ice crystals. When the ice crystals are heavy enough, they begin to fall as hail.

As the hail falls, it becomes negatively charged. The negatively charged pieces of hail at the base of the cloud then become attracted to the positively charged Earth's surface.

When the attraction is strong enough, the charges come together creating a flash of lightning. It is the rapid expansion and heating of the air which causes the claps of thunder.

You can keep tabs on our live LightningRadar where strikes are indicated by an expanding ring. The yellow dots, which will then be visible for 15 minutes and decrease in strength to indicate time passed since they first struck.

Watch our weather explained video below to find out more about how thunderstorms develop:

Weather & Radar editorial team

More on the topic

Autumn is the season for fog. High pressure, but no sun. . . Thursday 5 November 2026
A split-screen image showing the weather radar for Europe and a mountain landscape. On the right, snow-capped peaks rise above a thick blanket of fog against a blue sky.
Thursday 5 November 2026

High pressure, but no sun

Autumn is the season for fog
Gloomy evening with a few spots of rain. Bonfire Night. . . Thursday 5 November 2026
Split image showing a cloudy UK weather map with temperatures of 8–9°C alongside colourful fireworks bursting through smoke in the night sky.
Thursday 5 November 2026

Bonfire Night

Gloomy evening with a few spots of rain
Wetter but warmer, sunnier October. Monthly weather review. . . Tuesday 3 November 2026
Split image showing two people sheltering under a blue umbrella in rain and a weather map with widespread rain across Britain and temperatures of 9–16°C.
Tuesday 3 November 2026

Monthly weather review

Wetter but warmer, sunnier October
All weather news

This might also interest you

Historic Storm Éowyn arrives. On this day.... . . Saturday 24 January 2026
Split image showing a person in a yellow jacket struggling against strong winds and heavy rain on a street at night on the left, and an Irish wind forecast map on the right with red and purple shading, gusts up to 75 mph, and a wind warning icon, divided by a curved white line.
Saturday 24 January 2026

On this day...

Historic Storm Éowyn arrives
Storm Chandra makes impact. Severe gales & heavy rain. . . Tuesday 27 January 2026
Split image showing strong winds over the UK on a forecast map and widespread rain and snow on a weather radar map.
Tuesday 27 January 2026

Severe gales & heavy rain

Storm Chandra makes impact
A frozen start to the weekend. Icy conditions. . . Friday 13 February 2026
UK temperature map dated 14.02 showing widespread subzero values in blue shading, with readings such as −4 in Glasgow, −3 in Dublin, and −2 in London, alongside a blue thermometer icon.
Friday 13 February 2026

Icy conditions

A frozen start to the weekend
All articles
Weather & Radar

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwitteryouTubelinkList