When you live near the coast, the weather isn’t just a topic of small talk - it’s a serious matter. Coastal areas are vulnerable to unique hazards, one of the most dangerous being coastal flooding. If you've ever seen or received an alert titled “Coastal Flood Warning,” you may have wondered what the warning means, what the risks are, and what you should do.
A coastal flood warning is the most severe alert, meaning that seawater spillage is imminent within the next 12 hours. Knowing what to do and listening to the authorities to protect you and your family are important. Let’s break down some important information about a coastal flood warning.
What Is a Coastal Flood Warning?
A Coastal Flood Warning is an official alert issued by the National Weather Service (NWS) to warn residents of expected or occurring coastal flooding that poses a serious risk to life and property. This type of flooding typically results from storm surges, high tides, hurricanes, nor’easters, or other powerful weather systems that push seawater onto normally dry land.
Unlike a coastal flood watch, which means conditions might lead to coastal flooding, a warning means it is imminent or already happening.
What Causes Coastal Flooding?
Coastal flooding is usually driven by:
- Storm Surge - Abnormal rise of water generated by a storm, often during hurricanes or tropical storms.
- High Tides (King Tides) - Naturally occurring high tides that can flood low-lying areas.
- Heavy Rainfall - When combined with rising sea levels, heavy rain can overwhelm drainage systems.
- Strong Winds - Wind-driven waves can push seawater inland, particularly during strong weather systems.
These forces can cause water levels to rise quickly, flooding streets, homes, infrastructure, and vital public services. The severity of coastal flooding depends on several factors, including:
- The height of the storm surge
- The time of high tide
- The geography and elevation of the coastline
- Preparedness and flood protection measures in place
Floodwaters can damage buildings, roads, electrical systems, and drinking water supplies. In some cases, areas may become inaccessible, requiring emergency evacuations.
What to Do During a Coastal Flood Warning
If a Coastal Flood Warning is issued in your area, it means life-threatening flooding is expected or already occurring in coastal areas due to storm surge, high tides, or strong winds. Immediate action must be taken to protect yourself, your loved ones, and your property.
Here’s what to do during a coastal flood warning:
- Stay Informed - Monitor local news, weather apps, and official alerts from the National Weather Service for updates.
- Evacuate If Advised - Follow evacuation orders from local authorities without delay. Don’t wait until it’s too late, as roads may become impassable quickly.
- Avoid Floodwaters - Never walk, swim, or drive through floodwaters. Just six inches of moving water can knock you down, and a foot can sweep your car away.
- Move to Higher Ground - If evacuation isn’t necessary, move valuables and important documents to upper floors and stay on high ground.
- Protect Your Home - If you have flood barriers or sandbags, deploy them early. Secure outdoor furniture and anything that could become a hazard in strong water currents.
- Turn Off Utilities - If instructed, shut off electricity, gas, and water to prevent potential fires, explosions, or electrocution.
- Have Your Emergency Kit Ready - Make sure your emergency kit is stocked with essentials like water, non-perishable food, a flashlight, medications, and important documents.
Preparedness can make all the difference during a coastal flood. Stay safe, act fast, and don’t underestimate the power of rising water.
Long-Term Protection Against Coastal Flooding
Living in a coastal area means flood preparedness should be part of your long-term safety plan, which can include:
- Elevating buildings and electrical systems
- Installing flood protection products, such as custom flood barriers
- Creating a custom flood response plan
- Staying insured with flood-specific coverage
Businesses and property owners can also work with flood protection experts to assess vulnerabilities and implement tailored solutions that reduce damage and recovery time.
Final Thoughts
A Coastal Flood Warning is more than just a weather notice - it’s a call to action. Understanding the risks and knowing how to respond can protect lives, property, and your peace of mind. As coastal weather patterns grow more unpredictable, preparation is the most effective defense.
If your property is located near a coastline and you want to take proactive steps against flood damage, reach out to a flood expert today.