The Met Office has issued a thunderstorm alert that will affect six counties on Tuesday. The warning, scheduled for Northern Ireland from midday to 9pm, advises residents to prepare for potential flash flooding by creating a flood plan and having an emergency flood kit on hand.
According to the national weather agency, there is a likelihood of some homes and businesses experiencing flooding, which could impact driving conditions due to spray, standing water, or hail, potentially causing longer travel times for motorists and bus passengers.
Train services may experience delays, and there is a risk of lightning strikes causing damage to buildings and structures, with a possibility of temporary power outages and service disruptions.
Northern Ireland is expected to receive up to 30mm of rain within a two-hour period, accompanied by strong winds and hail during the heaviest showers.
In addition to flood preparedness, individuals are urged to ready themselves for potential power outages by gathering essential items such as torches, batteries, a mobile phone power pack, and other necessary supplies.
Despite ongoing high temperatures across much of the country, the warning remains in place. London is set to reach 34C, the Midlands 32C, the north-west 29C, and Cardiff 27C. Cooler temperatures are anticipated in Northern Ireland and Scotland, with expected highs of 21C in both Belfast and Glasgow.
The BBC Weather forecast indicates cloudy conditions with rain for the north and west regions tonight, while tomorrow is predicted to be mainly cloudy in Scotland with showery rain, and a mix of sunny spells, patchy clouds, and scattered showers elsewhere.