I completely forgot. What a film and made for TV too, would love to see a new version, feels like we need to reinforce the fear of nukes again just as a safety measure. 

If your talking about the ABC movie from 1983, the name is "The Day After"

But if your talking about the movie "The Day After Tomorrow", then it's about climate change.

No interest right now tbh. Best B&W film is Citzen Cain if you don't count Shindlers List. Parasite probably and Planes, Trains and Automobiles. 

I could have sworn. Lol. I guess the nukes gave my mistake away. 

I will give you my picks tomorrow, too tired right now.  Been a long day.

Dawn of the Dead 1978 is phenomenal. Probably my favourite. The politics in it were particularly relevant with the whole Coronavirus epidemic, where it kept on spreading because people actively helped it to spread - purposely due to political brainwashing or bizarre "moral' convictions - which is exactly how the zombie apocalypse spread in Dawn of the Dead 1978 (the 2004 remake is more of an action film with the politics and society building stuff stripped out).
I also really like Titanic, Children of Men, End of Evangelion, and Don't Look Up. Akira, if it counts.

Cloverfield (including 10 Cloverfield Lane) - I've not seen the latest one (Cloverfield Paradox). I suppose I'll have to get round to seeing it.
Pandorum - if that counts, it's really good. Almost a cosmic horror too due to it's mystery & Sci-Fi themes.
Titanic - A genuine classic & master of the disaster genre.
Threads (1984) - Schools across Britain had to watch this for decades. Me being British, I had to watch this even in the early/mid 2000s. It's a British movie about a potential nuclear war. The nuclear explosion part is old & cheesy yet extremely brutal and haunting to remember.
Terminator 2 - if that counts, the future that the terminator comes from is a world-ending disaster. The nuclear scene in that movie is also brutal like Threads' scene.
MARS ATTACK! - hahaha, I have to put this nostalgic masterpiece of magical art in a strange era that almost existed for a while, that only 90s kids would understand XD.

My favs have to be old Zombie films by George Romero & others inspired by his work-

Dawn of the Living Dead (1978)
Zombie Flesh Eaters (1979)
Day of the Living Dead (1985)
Return of the Living Dead (1985)
Return of the Living Dead part 2 (1988, there are also other parts but I wasn't a fan of the rest)
Night of the Living Dead (1990 remake)
28 Days Later (2002)
Dawn of the Dead (2004)
Land of the Dead (2005)
.Rec (2007, including all the sequels, originals & US retakes)
The Crazies (2010 remake)
...and many more that I will remember after writing this.

I need to see 28 Weeks Later. I keep meaning to watch it for years. I loved the first one. I'd probably have this in my list too if I saw it.

I would also like to mention - Devilman Crybaby (2018 remake of an older anime series). I know it's not a movie but it's a short series, but it has a shocking ending fits perfectly into a dark theme of global disaster. It's an ending that always stays in my mind.

I enjoyed writing this. I agree with others posts here too. The Day after Tomorrow, 2012, I am Legend, Shawn of the Dead, Zombie Land. I enjoyed them all even if 2012 got a bad reputation at the time. It came out when global weather disasters where influencing Hollywood to make so many relatable films which made it feel run-of-the-mill, then using constant CGI for the awe-factor & having generic characters that are universally understood by millions across the world to boost sales, etc. But I like the disaster scenes & special effects. I still watch clips of it now.

I'd recommend skipping the Cloverfield Paradox, it's a terrible film and its connection to the original film is little more than a gimmick.

Great picks and I'll let the supernatural rule ride :), Threads is another gem. The mattress scenes is what put the fear of nukes in me more than anything else as a kid. So many nightmares from that. And Devil Man crybaby is my favourite anime along with Steens Gate. 

Totally agreed too, I rematch 2012 for the disaster aspect which is probably the most destructive film. There is another really so bad it's good film in Moonfall but you really have to have your cringe guards on tightly.

Completely forgot about Godzilla Minus one. A recent gem but I'm not sure I'd watch it again so soon..