Fog message

I just sent him a short message telling him that there will be a heavy rain tonight and reminding him to take an umbrella.

PS。

(1) Rain cats and dogs are not commonly used or hardly used by British and American people.

(2) Remind him not to forget to bring an umbrella: it is ok to add forgetting (just say a few more words), but bring it.

(3) In urban dictionary, it is written like this: instead of saying, "I just sent her a message." You will say, "I just texted her."

So the pink princess pig upstairs writes well (of course, her whole sentence is quite good)

Ask again if you have questions.