Why didn’t I get a tornado warning on my iPhone Weather App?

Getwarnings wrote:

Why didn’t I get a tornado warning on my iphone

Check with your local weather station/ County/ or State and verify you have signed up for local notices of this sort..

ref: NWS Alerts - National Weather Service

Open the Weather app on your iPhone, then tap the menu to display your weather list. Tap the three dots, tap Notifications...

If prompted, allow notifications from the Weather app. ALWAYS

Below Current Location, turn on notifications for Severe Weather and Next-Hour Precipitation (green is on).

ref: Manage weather notifications on iPhone

Which iPhone do you have? Is there a specific app you have set up for tornado warnings that did not notify you? Please provide more information.