Southeast Texas experiences more tornadoes in November.

Anomalous rise of tornadoes in autumn

Severe autumn weather involving tornadoes seems to be on the increase in Southeast Texas. Over the past five years, November has seen more tornadoes than any other month, according to the National Weather Service (NWS).

In 2021, for example, November saw seven tornadoes in Southeast Texas, while May and October each had just two.

Autumn tornado activity

Historically, tornadoes in the Southern Plains have been most common from May to June. But in recent years, that pattern has started to change thanks largely to climate change.

Autumn is tornado season in the Southern United States, with the peak occurring in November. This is because the jet stream, a high-altitude wind current, shifts southward during this time of year.

As the jet stream moves south, it brings with it cold, dry air from the north. This cold air collides with the warm, moist air from the Gulf of Mexico, creating a favorable environment for thunderstorms.

The combination of cold and warm air can create powerful updrafts, which are necessary for the formation of tornadoes.

Southeast Texas falls directly in the area most likely to be affected by these autumn tornadoes.

Tornado safety

If you live in Southeast Texas, it's important to be aware of the risk of tornadoes during the autumn months.

Here are a few safety tips to keep in mind:

• Have a plan for what to do if a tornado warning is issued.
• Identify a sturdy building where you can take shelter.
• Stay away from windows.
• If you are outside, lie down in a ditch or other low-lying area and cover your head with your hands.

By following these safety tips, you can help reduce your risk of injury or death during a tornado.

For more information on tornado safety, visit the NWS website.