Why are there no weather warnings this week?

[pastapestoparmesan]

The weather and temperatures here in London are pretty much exactly the same as two weeks ago, when we had several days of amber and three days of red warnings. This prompted 3 half days at the school I work at, making it just about bearable. Not even a yelllow warning this week - why is that? Public transport, classrooms etc are just as hideous as two weeks ago!

Day temperatures are a good bit lower across the board this time though. We're looking at barely scraping 31 when we were at 36 before the schools closed the other week.

@Beachbeach south London? This is a micro climate thing, isn't it? I never would've thought I would be having a much higher temperature out here in Essex in London.

But the night time temperatures do have an impact on health, and the severe weather warnings are about impacts, this is from another Met Office page

www.metoffice.gov.uk/blog/2025/understand-tropical-nights-and-their-impact

Health Impacts of Hot Nights
Tropical nights can have a profound impact on human health. The body relies on cooler nighttime temperatures to regulate core temperature and recover from daytime heat. When overnight temperatures remain elevated, this recovery process is disrupted, potentially leading to increased cardiovascular stress and sleep disturbances. Studies have shown that high nighttime temperatures are linked to increased mortality, particularly among older adults and those with pre-existing health conditions.

I'm in South Lincolnshire. Temps of about 32 today, but it's lovely and cool now, sitting in the garden. Nothing like as humid as a few weeks ago.

Just found this too
https://weather.metoffice.gov.uk/guides/warnings

What is the difference between the Extreme Heat Warning, Heat Health Alert, and a heatwave?

• Extreme Heat Warning – an impact-based warning designed to highlight the potential impacts of extreme heat to protect lives and property, helping people make better decisions to stay safe and thrive

• Public Health England Heat Health Alert - An England only service considering the impact of prolonged extreme heat on public health, especially those with long-term health conditions.

• Heatwave definition - a threshold-based meteorological definition designed to provide the media and public with consistent and reliable messaging

Is it down to humidity as well? Meant to be less humid at the mo, so more bearable perhaps?

Live in the North Midlands. Had warnings here. Amber warnings.

Are you sure you haven't just missed the warnings @pastapestoparmesan?

Live in the North Midlands. Had warnings here. Amber warnings.

Are you sure you haven't just missed the warnings @pastapestoparmesan?

Is it Met Office who use that matrix thing?

To be fair, there is some kind of weather warning for my part of the world, but I feel like it should be a red warning.

Also the transport organisations who would normally send me an email saying not to travel, they're not doing that

I'm quite surprised the plastic seats on the bus didn't melt yesterday!

Certain services have to close with those warnings, for example several passport offices had to close with a red warning. I think the red was because it was expected to hit 37, whereas yes it’s mega hot at moment but 33 max here today, and a bit cooler the other days. Hot, but not warning territory. Must be some kind of guide on when its classed as amber, orange, red etc.

London has been unbearable overnight for a few nights now. Accuweather haven't showed temps dropping below 20c

I believe it's more to do with the humidity and dew point being lower than when we were under the red weather warning two weeks ago.

They are health warnings. The op was asking about weather warnings.

But this thread is asking about THIS heatwave, in comparison to the last one, so referring to the last one makes no sense

It’s the same as the last heatwave where I am, feels warmer actually. The temperature hasn’t dropped below 27 all week

I think that’s correct, everyone does have to this time, we cant keep closing schools every time it gets above 30. It’s not quite as hot as the last heatwave and night temperatures are cooler. It’s going to become the norm most summers.

This just popped up on my Instagram

Dunno, it feels hotter here (North London) this week than last. Maybe the novelty has worn off?

It does make sense. It's asking why aren't there health warnings in this heat wave when there was last time. The poster answered because it was 37/38 degrees and this time it isn't. I don't know what's so hard to understand about that.

The warnings are based on likely impacts, not particular temperatures.

More information is here: https://weather.metoffice.gov.uk/guides/warnings

There have been, I've seen them this week. I just looked at the BBC weather site and there are none but temperatures are supposed to be going down now. I hope.

See my post about 5 above yours, explaining the difference.

Humidity, breezes, and cooler nights. Not pleasant, but perhaps less dangerous.

I'm on the South coast and this heatwave has been nowhere near as bad as the end of June heatwave. Both heatwaves I have been stuck in the house, first due to a surgery recovery and this week due to DD being off school sick. The nights this week have been absolutely fine, haven't even needed the fan upstairs

This week actually has been officially declared a heatwave in London. 1]
The Met Office officially declared the heatwave on Monday. It has triggered an Amber Heat Health Alert across London and the south-east that remains active until Sunday evening. 1, 2, 3, 4, 5]
A misconception might arise because this week feels different from previous spikes, or because of how the UK defines a heatwave: 1]

• The Threshold is Met: For London, the official Met Office Heatwave Threshold is 28°C (82°F) or above for three consecutive days. London shattered this by hitting 34°C on Monday, 32°C on Tuesday, 33°C on Wednesday, and 34°C on Thursday. [, 2, 3, 4]
• Lower Humidity: Unlike the suffocating, highly humid heatwaves earlier this summer (such as the record-breaking June spike), this week has featured lower humidity levels. This makes the air feel slightly crisper and less oppressive, even though the temperatures themselves are dangerously high.[, 2, 3]
• It is a Test of Endurance, Not Intensity: This week isn't breaking all-time temperature records. Instead, forecasters are warning that it is one of the longest-lasting heatwaves since 1976, with temperatures expected to hover near or just above the threshold for up to 14 days. [, 2]

It’s not gone below 20 overnight in London for 3 weeks so it can’t be that