Short But Sharp ‘Heat Burst’ Expected To Produce UK’s Hottest Weather In 9 Years Challenging Wimbledon Record Of ’76!

THIS POST HAS BEEN UPDATED THROUGHOUT TODAY

The heat and humidity builds throughout the UK today and you’ll have noticed the increasingly muggy feel as the rise in water vapour adds to the uncomfortable feel of the air. It’s not the temperature but humidity that makes it unpleasant and even hard to breathe if bad enough.

As of this this morning, Wales has now recorded it’s warmest of the year, yes as of 11am with 24.8C at Rhyll. Additional warming is a certainty.

UPDATE: The thermometer has reached the 30C mark in London for the first time since July 26, 2014.

Credit: BBC Weather

Credit: BBC Weather

The below 850mb temp charts shows the plume of hot, humid air lifting north today as the trough deepens to the west. Acting like a seesaw, as cool air dives south out over the ocean, warmth and humidity from Africa lifts north.

Credit: AccuWeather Pro

Credit: AccuWeather Pro

Warm plume reaches maturity and peak tomorrow with very warm air at 5,000ft.

Credit: AccuWeather Pro

Credit: AccuWeather Pro

20C+ at 5,000ft over East Anglia is about as warm as the mid levels get over the UK.

gfs---uk-39-C-850hgt

The GFS has 65+F dew points by this evening… that’s subtropical level and pretty uncommon for east-central and Scotland and along the England-Scotland border.

Credit: AccuWeather Pro

Credit: AccuWeather Pro

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So, the building warmth of today won’t go very far tonight due to the subtropical humidity levels within our lower atmosphere (above).

11pm tonight, forecasted temps from the BBC.

Credit: BBC Weather

Credit: BBC Weather

5am tomorrow morning.

BBC Weather

BBC Weather

Today is just the taster to what will be an unusually ‘hot & humid’ day UK-wide tomorrow and we’re not alone of course, it’s an entire WESTERN EUROPE event this with records expected to be threatened.

Back in July of ’76, Wimbledon saw a temperature of 34.6C, this may be threatened tomorrow PM.

Credit: BBC Weather

Credit: BBC Weather

With a warm day to give way to a warm night, the stage looks set for potentially the UK’s warmest day in 9 years! The temperature hasn’t exceeded 35C since July 2006 when a new July record of 36.5C was recorded at Wisley, Surrey.

The benchmark for prolonged summer heat in the UK goes to 1976 which saw 16 straight days of 30C or higher and since 1959, only 17 days has seen temperatures of 35C or higher in the UK. Tomorrow may make day 18.

Here are the BBC forecasted highs for tomorrow.

Credit: BBC Weather

Credit: BBC Weather

If you don’t like this kinda of weather, don’t fret the sweat… a cooling trend commences Thursday and so for Northern Ireland and Scotland in particular, the truly ‘hot weather’ lasts a mere 2 days compared to 2-3 WEEKS back in 2013 and 2006 where it was day after day of 25+.

When you’ve hot, humid air in the way of an approaching front, you know nature’s fireworks are never far off. Showers and thunderstorms are likely to become a widespread feature late tomorrow into Thursday. Could be some very intense cells as the air will be unusually balmy. Lot’s of fuel for this front to work with.

Credit: AccuWeather Pro

Credit: AccuWeather Pro

CAPE is very high late Wed PM into the evening hours.

Credit: AccuWeather Pro

Credit: AccuWeather Pro

Credit: AccuWeather Pro

Credit: AccuWeather Pro

The cooling trend kicks in late week but becomes more influential into next week for the UK as a whole. Continental mainland is likely to remain hot.

Credit: BBC Weather

Credit: BBC Weather

Credit: BBC Weather

Credit: BBC Weather

Credit: BBC Weather

Credit: BBC Weather

See today’s video for the discussion.

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