Thunderstorms and flash flood risk on final day of UK heatwave

ByTomasz Schafernaker

Lead Weather Presenter

The heatwave impacting parts of the UK this week continues into Tuesday with a hazard of thunderstorms successful immoderate parts.

Pershore successful Worcestershire and Cavendish successful Suffolk deed 3 consecutive days of heatwave threshold temperatures connected Monday and it is expected much parts of confederate and eastbound England volition scope heatwave criteria connected Tuesday.

Amber and yellowish vigor wellness alerts, external are successful effect crossed overmuch of England until 09:00 BST Wednesday, with temperatures expected to scope much than 30C successful immoderate areas.

The aggravated vigor volition beryllium abbreviated lived though arsenic a alteration successful the upwind signifier is connected the mode from midweek.

During Tuesday, a acold beforehand volition determination southwards crossed the Midlands and into south-east England. However, it is improbable to present immoderate meaningful rainfall.

Some areas successful the acold south-east, including London, Essex, Kent and Surrey, are improbable to person immoderate rainfall astatine all.

This is simply a signifier that has go each excessively acquainted successful caller weeks, arsenic the UK experienced its driest and sunniest July connected record.

Areas of debased unit person tracked to the northbound of the UK, bringing below-average rainfall and consistently failing to present immoderate meaningful rainfall further south.

Low unit which has precocious brought rainfall to Scotland, Northern Ireland and parts of bluish England volition will bring scattered showers and thunderstorms connected Tuesday and into Wednesday. However, this is improbable to alleviate the existent drought.

A yellowish thunderstorm informing has been issued by the Met Office for parts of Northern Ireland connected Tuesday.

It volition tally from 12:00 to 21:00, erstwhile up to 30mm of rainfall successful an hr oregon 2 is possible, on with beardown winds and the accidental of hail.

Areas that bash spot a dense downpour are astatine hazard of flash flooding.

The scorched ground, adust writer and ungraded caused by the deficiency of rainfall is apt to origin important pooling and runoff, arsenic rainfall struggles to get absorbed during little bursts of dense rain.

Hail whitethorn travel the astir aggravated downpours which could travel arsenic a astonishment pursuing the predominantly blistery and adust conditions.

Hail is astir communal successful summertime months arsenic it needs to make wrong towering cumulonimbus clouds, which are often spawned by aggravated vigor astatine crushed level.

Following 1 of the driest and hottest stretches of upwind successful the UK's history, the indications are that August is apt to bring much of the same.

Forecast models suggest debased rainfall and supra mean temperatures volition proceed for overmuch of the UK, meaning it is improbable that immoderate of the hosepipe bans affecting much than 20 cardinal radical successful England and Wales volition beryllium lifted soon.

Wisley successful Surrey remains the driest determination successful the UK, having recorded 47 consecutive days without measurable rainfall, portion galore different parts of the UK person had a fraction of their mean rainfall successful June and July.

Further spikes of vigor are likely, nevertheless arsenic August wears connected and the prima gradually loses immoderate of its intensity, the likelihood of utmost temperatures successful the precocious 30s lessens.

But it is not uncommon to person spells of aggravated vigor reaching 30C oregon higher adjacent into September.

You tin spot the latest forecast for the coming weeks here.