Would you let a young person climb a mountain in this weather?

[Zebradoodledo]

Opinion needed. 17yr old DD. Her workplace has had a hike up Snowden booked for the last few months for...... tomorrow. I've been keeping an eye on the weather situation and as most people are aware there has been an amber to red weather warning for extreme heat issued for Wednesday and Thursday. I spoke to DD earlier in the week about it, she the coach can't be rearranged for another day as they will lose the deposit for the coach but that they have all decided they will take it very slow and walk at the slowest persons speed and take lots of rest breaks
Last night I was looking at the weather and reports and hubby and I decided it wasn't safe..... she absolutely kicked off. Crying, palpitations, saying she wants to go blah blah blah. We tried to talk to her reasonably and showed her government advice about the weather, we were reasonable and gave all the evidence including that from hiking websites who advise against it and she was having absolutely none of it. She still wants to go. We ended up in a huge argument with her. She was sobbing and had a panic attack. We had to stop and we agreed to pick it up today and make the decision later. (She's not speaking to us this morning!!!)
I just don't know what to do?!?! She hates me right now, that's ok, I can take that. But even with all that here I am....still trying to find compromises even though every bone in my body says no!!!
Do I email the people she works with and ask for reassurances ? It's a social thing so not a work event.
She has 5litres of water she may need more, she's got to carry that though!!??! As well as everything else
She's never hiked like that before other than with DofE!!
She's bought all the right food (nutrition bars, couscous, dried fruit etc). Has sunblock and the right clothes.
She's argued the weather where we live is currently 'cloudy' but that's not to say tomorrow will be or will be in Wales. They're leaving at 6am so will arrive at 8am and it'll be walking through the main heat of the day.
At 17 she's still underage. We explained that we still have final say. Do I be the 'bad guy' or do I let her make her own decision? It's just a bloomin dangerous decision in my own humble opinion!!!! What are your thoughts?
Wishing for the toddler years ago...they seemed so much easier than parenting teenagers!!!!

Ps I recommend “The Heights” in Llanberis for post walk pints and food!

@AndWorseAFemale where is the government advice to not go up Yr Wyddfa tomorrow? A link would be useful.

She’s not a wee child, telling her what to do and her having a panic attack all sounds mad, leave her to it.

Presumably her workplace have included the weather forecast in their risk assessment?

That’s not right.

Rhyd Ddu path, to the summit and back is not a 2 hour hike

Triple that. Google it.

Right now the Met Office forecast for that area is giving a high temperature of 24C in the valley, which decreases as you climb. I'd think it would be fine. If it's just a short 3 hour hike, I wouldn't take as much water as that. Make sure sunscreen, sunglasses, hat and take a light, loose long sleeved top in case of sunburn.

I was paraphrasing the OP, who has looked up government advice to show to her daughter. I haven't looked (and can't be bothered to if I'm really honest!) but I assume the government advice for amber and red weather warnings include not exerting oneself or being outside for longer than absolutely necessary.

Ah, right. Googled it and it looks like a relaxed 2.5 hours up and 2 hours down. Apparently there's a cafe at the top though, so the chance of shade for a rest, drink, toilet stop.

I once started a work mountain climb (not Snowdon) in 27 degree weather. As it turned out, I was more likely to have died at hypothermia at the very cold and wet peak dressed in shorts and a vest,

Wrong again.

Taking it you’ve not actually hiked this route yourself…

Relaxed, it ain’t.

I'm in my late 50s, and have done longer walks on my own in higher temperatures in Spain. I'm not reckless - I check the forecast before I set out, plan my routes carefully and if too hot/too long a walk etc, I don't go. Eg, last June in Spain I had a 20 mile walk planned through a remote area - no shade, no cafes. The temperatures were in the high 30s, so I didn't go.

Snowdon tomorrow looks fine. Walk, stop, admire the view, take a photo, have a drink of water - all good.

I've not been there myself no, but going by the descriptions here and elsewhere I found when I googled, I would consider that to be a relaxed hike. But obviously that's based on my own personal experience.

I'd be more worried that a 17 year old has a toddler tantrum when someone says no to be honest. Screaming and palpitations are not adult negotiation tools .

This.
Far more dangerous than the weather.

It will be much cooler up Snowden, probably the best place to be!
They can take their time and will probably have a great time.

If they are going up Rhyd Ddu, it’s a great hike. However, it does have a slightly exposed section which is absolutely fine if she has a head for heights. It’s a quieter route but there will still be a good few people. It’s not a relaxed hike-it’s not technically difficult at all but it’s still a hard uphill slog but interesting enough to make it worth it. There will be great views at the top. But she will need decent hydration-pp suggestion of hydration sachets are a great idea and also hat/sunscreen/appropriate clothing as there is absolutely no shade.

Wow you seem to know so much about our relationship from my post! Brief details gave you allllll that! #judgemental #soapbox

As it happens there's a weird low mist, inversion thing going on this morning. It's cool, no visibility. Hopefully it's clearer on the mountain

It's 2-3 hours to the summit where you can refill bottles/buy drinks/lunch. The times you are looking at are worst-case times for the out-and-back hike.

It's in the amber zone but this doesn't account for mountain weather, which is always much cooler. Current mountain forecast from the MetOffice is 24 in the valley and 21 at the summit.

Has she gone up OP? Was actually quite misty and cool here first thing but sun has been out since about 10.30 and it’s not that hot really (about 23 right now) will be lovely at the top of Snowdon

Me too, give me a toddler anytime. Dd moving into a new flat next week and needs help with her rent, we have asked her to look at her monthly outgoings so we know how much is needed, she is now hysterically crying because she feels we are accusing her of not being responsible with her money 🙄I hope your daughter sees sense, it's obviously not safe in this heat