How to Use Predictive Flood Impact Intelligence to Plan for Hurricane Season

The Importance of Operational Flood Forecasting in Hurricane Season

Hurricanes are among the most destructive natural disasters, causing widespread flooding that disrupts communities, damages infrastructure, and endangers lives. In 2024 alone, hurricane-related impacts contributed to billions in damages and forced thousands of evacuations. But this damage is not just from destructive winds. Many people don’t realize how much of this economic damage is caused by floods through coastal storm surges, and widespread high-intensity rainfall which causes riverine and flash flooding. Let’s take Hurricane Helene as an example where 85% of the damage was caused by flooding. Core logic estimated damages at between $30.5 billion and $47.5 billion, with flood damage making up $26 - $41 billion of that amount (85% - 86%).

Yet, emergency response efforts are often hindered by outdated, static maps or broad forecasts showing peak flood height, or flash flood risk at a state level. Many emergency managers lack localized predictions on flood impact on people, property, and critical infrastructure, making it difficult to know exactly which zones to evacuate, and where to deploy resources or respond in real time.

Accurate, predictive flood intelligence is critical for hurricane preparedness. While traditional flood maps provide a broad overview of risk areas, they often lack the real-time, street-level precision needed for decision-making when every second counts. This is where FloodMapp’s real-time flood intelligence solutions—ForeCast, NowCast, and PostCast—help emergency managers plan, respond, and recover more effectively.

In this post, we’ll explore how flood data can be used at every stage of emergency response during hurricane season to improve safety, efficiency, and overall disaster resilience.

Pre-Event Planning: How Flood Data Enhances Preparedness

When a hurricane is approaching, emergency managers must make critical decisions before the storm even makes landfall. Operational, impact-based flood forecasting enables agencies to prepare proactively by identifying at-risk areas, planning evacuation routes, and pre-positioning resources.

How ForeCast Supports Hurricane Preparedness:

• Identify At-Risk Areas: Predictive flood impact modeling provides detailed forecasts of where flooding is likely to occur, helping officials plan for high-risk impact zones.

• Alerting and warnings – property-level ForeCasts can be used in alerting and evacuation platforms to disseminate targeted alerts, evacuation warnings and evacuation orders, to help communities safely evacuate.

• Plan Safer Evacuation Routes: Unlike static flood maps, ForeCast provides street-level flood intelligence, allowing emergency teams to plan evacuation routes that avoid flooded roads.

• Strategically Position Resources: Emergency response teams can pre-position mitigation measures, swiftwater rescue crews and equipment, and personnel in areas that will remain accessible throughout the storm.

During Hurricane Helene in 2024, emergency managers in Florida used predictive flood modeling to anticipate severe flooding in specific areas. By adjusting evacuation routes to avoid projected flood zones, they ensured safer and faster evacuations, preventing last-minute road closures that could have trapped residents.

Real-Time Response: Making Critical Decisions as a Storm Unfolds

As floodwaters rise, emergency responders need live data to make dynamic, life-saving decisions. Traditional flood models don’t update in real time, leaving responders without up-to-date information when conditions change rapidly.

FloodMapp’s NowCast provides real-time flood intelligence, allowing emergency teams to:

• Monitor Flooding in Real Time: Track flood progression dynamically as rain falls and river levels rise. Adapt operations to ensure response efforts align with the most impacted areas.

• Redirect Emergency Vehicles and Traffic: Close roads to reduce incidents and keep the public safe from dangerous floodwaters. Keep response teams safe by rerouting ambulances, fire trucks, and rescue crews

• Coordinate Response Across Agencies: FloodMapp supports enterprise-wide implementation, ensuring that all relevant departments have access to a single source of truth for real-time flood intelligence. This seamless integration enhances interdepartmental coordination, allowing for faster decision-making and more effective disaster response.

FloodMapp’s Hurricane Helene StoryMap provides a detailed visual representation of how real-time flood data supported emergency management during the storm. By integrating street-level flood intelligence, decision-makers in Florida were able to better anticipate flood impacts, adjust response efforts dynamically, and protect critical infrastructure. Explore the StoryMap to see how real-time flood intelligence made a difference during the costliest disaster of 2024.

View the Hurricane Helene StoryMap

Post-Event Recovery: Using Flood Data for Damage Assessments

After the storm passes, flood intelligence remains crucial for recovery efforts. Emergency managers must assess damage, prioritize resources, and apply for federal aid.

FloodMapp’s PostCast delivers accurate flood extent data to support:

• Rapid Damage Assessments: Identify the hardest-hit areas to deploy recovery teams where they are needed most. Quantify impacted structures and estimate damages to fast-track recovery.

• Infrastructure Inspections: Assess roads, bridges, and utilities for flood-related damage.

• FEMA & Insurance Claims: Provide precise flood data to support FEMA aid applications and insurance claims, ensuring faster funding for rebuilding efforts.

Accurate, real-time flood data is a game-changer for emergency managers during hurricane season. By integrating predictive, real-time, and post-event flood intelligence, agencies can enhance preparedness, make life-saving decisions during a storm, and accelerate recovery efforts.

Want to see how FloodMapp can help your team plan for the next hurricane? Request a demo today to explore how real-time flood intelligence can improve your emergency response strategy.

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