Petersfield, England, United Kingdom Severe Weather Alertstar_ratehome

An area of thunderstorms moving east across the area will bring a spell of frequent lightning, gusty winds, torrential rain, and a few places, hail.

The storms will be moving quickly reducing the potential for widespread large amounts of rain, but there is a few places could see 20-25 mm of rainfall in a short period in the most active storms, which could bring some brief flooding. The majority of impacts are likely to come from other hazards however, such as lightning striking buildings and causing power cuts, difficult driving conditions in heavy rain, and some localised damage to vulnerable structures by strong wind gusts or hail.

For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

During the heatwave expected to affect a large part of England and Wales this week, the highlighted area now looks increasingly likely to see a two to three day period where maximum temperatures in the shade exceed 37 Celsius, perhaps rising to 38 to 40 Celsius in some places. The heat will be accompanied by high humidity, exacerbating the potential for discomfort and health impacts, with very warm and humid night times also reducing the ability for people to recover overnight. 

Significant disruption to daily life is likely and the public should take every effort to make precautions and adapt their daily routines where possible to cope with these levels of heat, which up to now have been extremely rare for the UK.

For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Information on update: The warning area has been expanded, particularly across northern England, south Wales and southwest England. Very hot weather will continue in general until at least Thursday across the highlighted region, although some variations from place to place and day by day are likely. Temperatures by day are widely expected to exceed 30 Celsius, with the hottest areas potentially peaking around 38-40 Celsius within the embedded red warning. 

Overnight, temperatures are unlikely to fall much lower than high teens Celsius, and some places will not fall below low 20s Celsius. These high temperatures will also be accompanied by high humidity.

Cooler conditions may begin to become established from the west following this period, but confidence is low.

For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Information on update: Area expanded across east Wales and much of the Midlands. Some updates to the 'further details' too. Following very warm weather on Sunday, very high temperatures, accompanied by high humidity, are expected on Monday and especially Tuesday and will likely bring widespread impacts to people and infrastructure. In addition to high daytime maxima, temperatures overnight will remain very warm, especially in larger urban areas.

Temperatures are likely to reach the low to mid-30s Celsius in places on Monday and into the mid-30s Celsius more widely on Tuesday. Some places, particularly in urban areas, may see temperatures remain above 20 Celsius overnight.

The very high temperatures are likely to continue across parts of central and southern Britain further on into next week, albeit with some uncertainty in the extent and magnitude of this heat. 

For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings