Introduction

TORRO studies severe weather across the UK and Ireland. After heavy showers, thunderstorms or bands of convective rainfall produce very strong or damaging (local) winds, where we are able, we investigate the effects on the ground to see how strong the winds were, what type of event occurred (such as a tornado or downburst), and what damage was caused. Our work helps the public understand severe storms, advances research, and maintains a reliable record of tornadoes.

For residents affected by severe thunderstorm-related winds

When possible, TORRO volunteers will visit the affected area and may also reach out on social media for additional information. During an investigation, they will:

• Carefully examine damage to buildings, trees, fences, and other structures.
• Take photographs and detailed notes.
• Fly drones to inspect areas where safe and appropriate.
• Speak to eyewitnesses, which may include knocking on residents’ doors to ask questions.

Safety first

• TORRO investigators only enter areas that are safe.
• Residents should avoid damaged areas to prevent injury.

Why site investigations matter

• Observing damage first-hand allows us to determine the cause — whether it was a tornado or another strong thunderstorm-related wind — and to assess the impact.
• Adds to the national record of tornadoes, a dataset maintained by TORRO for over 50 years.
• Understanding the effects of these winds supports greater knowledge of UK storms and informs public safety guidance.

How you can help

• Report localised wind damage and tornado/funnel cloud observations via TORRO’s Severe Weather Report.
• Never put yourself at risk taking footage; always seek shelter rather than putting yourself in harm’s way.

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Current TORRO Site Investigators