HKWarnings is live on the App Store:

It’s a simple app that displays the current Hong Kong Observatory weather warnings. Also, if there is a nearby typhoon, it displays the Tropical Cyclone Track images.

I plan to localise it to Chinese and add a Typhoon Mode for when there is a typhoon nearby and the HK Observatory website is getting a lot of traffic so is slow.

It was originally called “Can We Go Home Yet?” – with one click on your iPhone you can see if the Typhoon 8 signal has been raised and it’s time to go home!