Ireland faces 30C heat as Europe swelters under heat dome; safety warnings issued

Ireland is bracing for a significant warm spell, with Met Éireann issuing a status yellow hot weather warning as temperatures are forecast to climb as high as 30 degrees Celsius. The warning is in effect from Tuesday midday until Friday morning, with daytime temperatures expected to exceed 27 degrees throughout the week before peaking on Thursday. Night-time temperatures will also remain warm, with minimums of 15 degrees.

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There is a large area of high pressure over much of Europe at present, which is bringing extremely hot conditions to much of the continent.

According to Met Éireann forecaster Gerry Murphy, much of Europe is currently under the influence of a "heat dome." This phenomenon, characterized by an area of high pressure, compresses the air downwards, leading to stagnant conditions and steadily increasing temperatures. While Ireland is experiencing the effects, it is not at the center of this high-pressure system, resulting in temperatures that are high but not as extreme as those seen elsewhere on the continent.

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We are under the influence of it [the heat dome], but not at the centre of it ... so our temperatures are not quite as high.

Murphy clarified that this period is unlikely to be classified as a heatwave, which typically requires temperatures above 25 degrees for five consecutive days. While most of Ireland may experience these temperatures for up to four days, some localized areas might still exceed the threshold on Friday. Thursday is anticipated to be the hottest day, with temperatures potentially nearing the all-time spring record of 30.6 degrees recorded in Shannon Airport.

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Having said that, there are a few places where the temperatures may well still be above 25 [degrees] on Friday ... but it will be localised.

Amidst the rising temperatures, Water Safety Ireland has issued crucial advice for those planning to swim. Chief executive Dr. Joanne Walsh urged swimmers to prioritize locations with lifeguards, be aware that air temperature does not dictate water temperature, and always swim within their depth and preferably with a companion. She stressed the importance of constant adult supervision for children, avoiding alcohol near water, and checking weather and tide conditions before entering the water. For those operating watercraft, wearing a life jacket is essential. Walsh highlighted that a significant portion of drowning incidents occur during the summer months and often follow land-based activities, underscoring the need for vigilance even when not actively swimming.

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warm air does not mean warm water