Task: In the Yowindow weather app, go to the settings and click on the notification to toggle on notifications for Umberalla reminders and sudden warnings or cooling in the warnings section.
Steps:
Click on the three vertical dots at the top right of the screen.
Click on the settings.
Click on the notifications button.
Toggle on the umbrella reminder and sudden warming or coiling to get alert for the same. 
Toggle on the umbrella reminder and sudden warming or coiling to get alert for the same.