A Coastal Flood Watch means that conditions are favorable for coastal flooding in and around your area. It’s a critical alert issued by the National Weather Service (NWS) to give you time to prepare. But what does it *really* mean, and more importantly, what should you do?
Understanding the Threat: What Causes Coastal Flooding?
Coastal flooding isn’t just about hurricanes and major storms, though those are significant contributors. Several factors can lead to a coastal flood watch being issued:
- High Tides: Especially during a full or new moon (known as spring tides), high tides can reach unusually high levels.
- Storm Surge: The most dangerous aspect of coastal flooding, storm surge is a rise in sea level caused by a storm’s winds pushing water ashore.
- Heavy Rainfall: Prolonged or intense rainfall can overwhelm drainage systems, leading to localized flooding in coastal areas.
- Onshore Winds: Strong winds blowing towards the shore can pile up water, exacerbating tidal flooding.
- Lunar Tide: The gravitational pull of the moon and sun can cause higher than normal tides.
These factors can combine, creating a particularly dangerous situation. A coastal flood watch is issued when these conditions are predicted to occur, even if a major storm isn’t directly impacting the area.
What Does a Coastal Flood Watch Mean?
A coastal flood watch is an *alert*. It doesn’t mean flooding is happening *right now*, but it means it’s *possible*. Think of it as a heads-up to be prepared. The NWS issues a watch when conditions are expected to develop within 12-48 hours. This gives you time to:
- Monitor Weather Updates: Stay informed about the latest forecasts from the National Weather Service and local news sources.
- Secure Property: Move valuables to higher ground, bring in outdoor furniture, and secure boats.
- Plan Evacuation Routes: If you live in a vulnerable area, know your evacuation routes and have a plan in place.
- Prepare an Emergency Kit: Include essentials like water, food, medications, a flashlight, and a first-aid kit.
Coastal Flood Warning: What’s the Difference?
It’s crucial to understand the difference between a coastal flood watch and a coastal flood warning. A *warning* means flooding is happening or is imminent. Take immediate action to protect yourself and your property. Follow the instructions of local authorities, and if advised to evacuate, do so immediately.
Staying Safe During a Coastal Flood
If a coastal flood watch escalates to a warning, or if you find yourself in a flooding situation, remember these safety tips:
- Never Drive Through Floodwaters: Even a few inches of moving water can sweep a car away. “Turn around, don’t drown!”
- Avoid Walking Through Floodwaters: Floodwaters can be contaminated with sewage, chemicals, and debris.
- Be Aware of Electrical Hazards: Downed power lines can be hidden in floodwaters.
- Listen to Authorities: Follow the instructions of emergency personnel.
- Report Flooding: Report significant flooding to local authorities.
Being prepared and staying informed are the best ways to protect yourself and your loved ones during a coastal flood watch or warning. Don’t underestimate the power of the ocean – respect the risks and take action to stay safe.
