Understanding Hurricane Storm Surge: A Beginner's Guide

Last updated: 2023-09-05

Hurricane storm surge refers to the abnormal rise in seawater during tropical storms, and understanding it is crucial for safety. While this guide provides essential information and resources, always remember that seeking professional weather advice may offer more tailored guidance for specific scenarios.

Summary

• Storm surge can cause significant flooding, with water levels sometimes rising up to 20 feet.
• The National Oceanic and Atmospheric Administration (NOAA) provides essential resources and maps for understanding and preparing for storm surge risks.
• Familiarity with storm surge mapping and alerts helps in assessing personal risk and planning accordingly.
• Mobile apps like Clime offer real-time weather alerts and detailed forecasts, supporting your storm preparedness journey.

What is Storm Surge?

Storm surge is an unusual rise in sea level caused primarily by tropical storms and hurricanes. Specifically, it occurs when powerful winds push seawater onto the shore, leading to increased water levels that can flood coastal areas. According to NOAA, "Storm surge is the unusual rise of water that happens during a big tropical storm" (source).

Why is Storm Surge Dangerous?

The danger from storm surge lies in its ability to inundate land rapidly, causing extensive flooding and destruction. Areas particularly vulnerable to storm surge include the Gulf Coast, where the ocean floor gradually deepens offshore. This can lead to devastating impacts, especially in regions like Louisiana and Mississippi. For instance, NOAA notes that sometimes the water can rise as many as 20 feet during a storm (source).

How Does it Happen?

Storm surge is primarily caused by the strong winds and low pressure of hurricanes and tropical storms. As a storm approaches, the wind pushes water towards the coast, which results in higher water levels (source).

Understanding Storm Surge Maps

To effectively prepare for potential storm surge impacts, familiarize yourself with storm surge maps. The National Hurricane Center (NHC) provides a useful resource called the Potential Storm Surge Flooding Map, accessible via its web map viewer (source). This map visually represents the areas at risk for flooding based on predicted surge levels during storms.

Step-by-Step Preparation Using Official Resources

1. Monitor Weather Updates: Use apps like Clime to track hurricane forecasts and receive timely alerts.
2. Understand Your Location's Risk: Check the NHC’s storm surge map to determine if you live in a high-risk area.
3. Create an Emergency Plan: Have a plan for evacuation if necessary. Know your local emergency protocols and areas of refuge.
4. Stay Informed: Follow updates from NOAA or local news outlets for real-time information on upcoming storms.

Tools and Resources for Storm Surge Management

• NOAA’s Sea, Lake, and Overland Surges from Hurricanes (SLOSH) Model: This computer model assesses risk and helps predict the extent of inundation from storm surge (source).
• Mobile Applications: Utilize apps like Clime, which provide NOAA-based weather maps and alerts, supporting you in making informed decisions about storm surge.

What We Recommend

• Stay updated on weather conditions and prepare ahead of storms using reliable resources like the NHC and NOAA.
• Use mobile apps to receive alerts and access essential maps pertaining to storm surge.
• Create an emergency plan that accounts for potential flooding and ensure your safety during hurricane threats.

In conclusion, while this guide has covered the basics on hurricane storm surge for beginners, always refer to official sources for the most accurate and specific information related to your area. With the right tools and knowledge, you can effectively prepare for storm surge events.