I get caught outside in the rain unexpectedly about a dozen times a year living in a tropical city where it can go from dry to raining so heavy you can't see the other side of the street with about 30 seconds warning.

Those powerful storms are often very small and they might only rain for a minute or two. It's impossible to predict when they will pass over, the city might be hit by 50 or so of them in a single day, but they're so small most of the city won't see any rain even though it technically rained 50 times somewhere in the city.

Despite being small they it can be heavy enough to cause flash flooding. The city has pumps that can force 70,000 litres of water per second out of the city and into the ocean (before that, it was near impossible to live here).

I carry a dry bag for my laptop and headphones everywhere I go, I guess I'd be putting my phone in there too, which will be annoying.