Experts Debunk Viral Claim: Cold Won’t Cause Trees to Explode

This winter, an unusual claim has gained traction online, suggesting that extreme cold could lead to trees exploding. Amid a severe cold snap affecting much of Canada and the northern United States, temperatures are plunging below -20°C, prompting discussion about unexpected weather phenomena. The claim originated from a viral social media post, which implied that frigid conditions in as many as seven states, including North and South Dakota and Michigan, might cause trees to explode.

Experts Respond to Tree Explosion Claims

With a significant polar vortex influencing the weather, it’s crucial to clarify the validity of these claims. Minnesota’s Department of Natural Resources addressed the issue on social media, reassuring residents that there is no need to avoid wooded areas due to the risk of “exploding trees.”

Understanding Frost Cracks

While the viral claim exaggerates the situation, it is essential to consider the phenomenon of frost cracks. As temperatures drop drastically, tree trunks can experience vertical splits, particularly in thin-barked species. Simon Peacock, an ISA-certified arborist, explains that this is due to the rapid freezing of sap and water inside the tree, causing a sound reminiscent of an explosion.

• Frost cracks are common in thin-barked trees.
• These cracks do not harm the tree and often heal over time.
• Repeated cracking can lead to a permanent “frost rib” in the bark.

Certain species, such as elm, maple, oak, and various fruit-bearing trees, are more susceptible to frost cracks. Interestingly, non-native trees may be at higher risk when faced with sudden temperature drops.

Impacts of Extreme Cold

Beyond trees, other natural phenomena can yield dramatic sounds during severe cold snaps. Frost quakes, or cryoseisms, occur when frozen ground expands and creates cracks. This can produce loud noises similar to earthquakes, disrupting nearby structures. Thundersnow, another rare occurrence, happens when warm moist air collides with cooler temperatures, resulting in lightning and thunder during a snowstorm.

Conclusion

While trees may not literally explode from the cold, they can sustain damage through frost cracks, resulting in surprising sounds. As temperatures continue to drop across North America, understanding these natural processes helps demystify weather-related claims circulating on social media.