What are derecho storms?
Derechos are a specific type of powerful wind storm. Derecho winds move in a straight line at very high speeds, often leaving damage to homes, trees, and utilities in their path. The name ‘derecho’ simply means ‘straight ahead’ in Spanish.
The storms that ripped across the plains were given the name ‘derecho’ in 1888 by the scientist and philosopher, Gustavus Hinrichs, who wrote about a significant derecho event that had impacted Iowa in July of 1877. Hinrichs, also a long-time professor at the University of Iowa, published his findings about the derechos that struck Iowa in the American Meteorological Journal and secured his place in weather reporting history.
How are derechos different from hurricanes or tornadoes?
The winds of derechos reach extremely high speeds, rivaling those of a hurricane or a tornado. As opposed to the funnel cloud of a tornado or the whirling mass of winds that make up a hurricane, derecho winds travel in a straight line. Derecho storms are generated from thunderstorms, and they move quickly. If you live in an area prone to derechos, pay close attention to your local weather conditions, as there may be little warning before a storm hits home.
A storm qualifies as a derecho if it produces straight-line winds moving at least 58 miles per hour and the path of damage stretches at least 240 miles. These storms have produced wind speeds as high as 130 miles per hour. The speeds of a derecho rival those of hurricanes and tornadoes, but their direction and behavior set them apart.
Which states get hit the hardest by derecho storms?
Derechos hit the four-state intersection of Arkansas, Oklahoma, Missouri, and Kansas with the greatest frequency, usually more than one strong storm a year. Illinois, Indiana, and most of Ohio also see frequent derechos, relative to the coastal and Southeastern states, which are less likely to experience them.
The ‘cool season’ derechos that sometimes appear in the fall are most common in a band that stretches from Texas, across northern Louisiana, Mississippi, Alabama, Georgia, and up to the Carolinas.
When are derechos most likely to hit?
Derechos in the United States are most common in the warmer early summer months, starting in May, and lasting through June, July, and sometimes August. There is a ‘second season’ of opportunity for derechos in the cooler fall months, but the storms generated in that season are typically less powerful and less of a threat to homes and businesses.
Can derecho storms damage my home?
Derechos can be some of the most damaging storms in the nation. Homes in the path of a derecho are often severely damaged by the powerful straight-line winds that appear with little warning when the storm blows through an area. Homes in wooded areas have the additional threat of damage from a falling tree or broken limbs crashing through a window or into a roof.
Why do derechos cause power outages so frequently?
Without the unpredictable movement of a tornado, the straight-line winds of a derecho are notorious for damaging significant areas without warning. If a group of utility poles and the lines they hold are destroyed in a matter of seconds, getting power back for the area could be a very complicated job involving hundreds of dedicated workers and technicians.
How can I prepare my home for a derecho?
Prepare yourself and your home for the threat of a derecho by being aware of your home, its roof, and the other exterior elements of the structure. Before storm season starts in your area, take the opportunity to give your home a good look, inside and out, and identify any possible problem spots or signs of leakage.
Derecho Storm Preparation Tips
Keep these practices in mind if you live in a state that sees derechos frequently. The speed and ferocity of these storms is often deadly to those in the path.
What else should I know about derecho wind storms?
- Derechos move faster than many people expect. Be aware of weather warnings during storm seasons.
- Derechos often knock down or break hundreds or even thousands of trees and telephone poles in a massive path of damage.
- Derechos are covered by Sola Wind and Hail insurance, which is available as a stand-alone policy without making any changes to your existing homeowners insurance. Contact your insurance agent to learn how Sola coverage could help protect you from the financial uncertainty that follows a severe storm impact on your property.
Sources:
“What You Should Know About Derechos” NAIC Newsroom, June 28, 2023, https://content.naic.org/article/what-you-should-know-about-derechos
“Derechos” Ready Iowa, https://ready.iowa.gov/disasters-emergencies/derechos
“What is a Derecho?” EcoFlow Blog, March 31, 2026
https://www.ecoflow.com/ca/blog/what-is-derecho-storm
“Gustavus Detlef Hinrichs” Wikipedia,
https://en.wikipedia.org/wiki/Gustavus_Detlef_Hinrichs
Gray is the Senior Content Specialist at Sola Insurance, working with the Sales and Marketing teams to provide helpful, valuable content for homeowners and agents. Gray has worked previously in finance, logistics, and advertising.
