Flash Floods

Flash Floods – What They Are and How to Stay Safe

Flash floods are natural disasters that can strike with little warning, causing widespread devastation and posing significant risks to human life and property. Understanding what flash floods are and how to stay safe during such events is crucial for anyone living in areas prone to heavy rainfall, including regions like Maryland. In this blog post, we will discuss the nature of flash floods and their causes, and provide valuable tips on staying safe when faced with this sudden and formidable threat.

Flash Floods

What is a Flash Flood?

A flash flood is a rapid and unexpected inundation of water into typically dry areas. Unlike river or coastal floods, flash floods can develop within minutes, sometimes even seconds, following intense rainfall, a dam or levee breach, or other sudden events. The water can rise rapidly, with little time for residents to react, making them one of the most dangerous and deadly types of flooding.

Causes of Flash Floods

Several factors can trigger flash floods, but the common denominator is excessive rainfall in a short period. Other contributing factors include:

  1. Topography: Steep terrain can accelerate water runoff, increasing the risk of flash floods.
  2. Urbanization: Paved surfaces and drainage systems can cause rainwater to flow quickly into rivers and streams, intensifying flash flood potential.
  3. Wildfires: Burned areas have less vegetation to absorb water, which can lead to increased runoff during storms.
  4. Climate Change: Changing weather patterns and increased extreme weather events have led to more intense rainfall, exacerbating flash flood risks.

Staying Safe During Flash Floods

  1. Stay Informed

Before the storm: Keep an eye on weather forecasts and alerts. Sign up for emergency alerts and notifications to receive timely information.

During the storm: Listen to local authorities and follow evacuation orders, if issued. Tune in to a battery-powered weather radio for updates.

  1. Know Your Risk

Identify whether you live in areas prone to flash flooding, such as low-lying regions, near rivers, or in urban areas with poor drainage.

  1. Create an Emergency Kit

Prepare an emergency kit that includes non-perishable food, water, a flashlight, batteries, a first-aid kit, and essential documents.

  1. Evacuate When Advised

If authorities recommend evacuation, do not hesitate. Flash floods can be life-threatening, and your safety is paramount.

  1. Avoid Flooded Areas

Never attempt to walk or drive through flooded areas. Determining the depth of water is challenging, and as few as six inches can cause your vehicle to lose control or be swept away.

  1. Stay on Higher Ground

If you cannot evacuate, seek higher ground. Climb to your home’s top floor or roof to avoid rising water levels.

  1. Be Cautious at Night

Flash floods often occur at night when they are harder to spot. Be especially vigilant during stormy evenings.

  1. Stay Connected

Keep your mobile phone charged and stay connected with loved ones during the storm.


Flash floods are a severe threat in many regions. Being prepared, staying informed, and taking appropriate action can mean the difference between life and death. By understanding the causes of flash floods and following safety guidelines, you can protect yourself, your family, and your property from this sudden and formidable natural disaster. Stay safe and stay informed, especially during times of extreme weather like flash flooding in Maryland.