Blog

Nov 2025

Beyond the "Triple Squeeze": Helping Bangkok Be More Flood Resilient

WEATHER

Bankok

Bangkok, a vibrant metropolis built on a low-lying river delta, has a long and complex relationship with water. Its resilience is tested frequently, but the severe floods of 2025 served as a stark reminder of the city's unique vulnerability. That event was not caused by a single factor, but by a perfect storm of three distinct pressures combining at once: the "Triple Squeeze."

Understanding this phenomenon is the first step toward developing more sophisticated, predictive tools to protect the city and its residents.

Understanding the "Triple Squeeze"

The 2025 flood overwhelmed the city's infrastructure because three powerful water sources converged simultaneously.

First, the seasonal monsoon delivered intense, localized rainfall, far exceeding the 60 mm per hour drainage capacity of Bangkok's canals. Second, heavy rains far upstream in the Chao Phraya River basin forced major dams to release large volumes of water, which flowed downstream to the capital. Third, seasonal high tides in the Gulf of Thailand pushed back against the river, creating a natural barrier that prevented the excess water from both the rain and the river from draining out to sea.

This triple pressure, rain from above, runoff from upstream, and tides from below left the water with nowhere to go. While the city has invested heavily in managing each threat individually, the 2025 event highlighted the critical need for a system that monitors all three concurrently.

Innovative Responses and Future Needs

Bangkok is already home to world class, innovative solutions for water management. Government initiatives and local projects are making a significant difference. A prime example is the Chulalongkorn University Centenary Park, a remarkable 11 acre green space engineered to hold up to one million gallons of floodwater. This park serves the community while acting as a giant, temporary retention pond, easing the burden on public drains during a storm.

These physical interventions are crucial for managing water once it arrives. The next frontier is unifying the data to anticipate the threat before it peaks. The Bangkok Metropolitan Administration (BMA) and other public bodies require tools that look beyond just one factor. They need a single, clear view of all three "squeeze" components to make proactive decisions.

A Vision for a Unified Dashboard

A centralized data platform is the logical next step in evolving the city's flood defenses. A flexible framework, such as the OpenWeather Dashboard, could provide the foundation for a comprehensive monitoring system specifically tailored to Bangkok's needs. 

In addition, the OpenWeather Extreme Weather Dashboard delivers a wide range of customizable information, including real-time alerts and location-based risk scores. Other features of the OpenWeather Extreme Weather Dashboard include:

  • Live Weather Risk Monitoring: Tracks severe conditions in real-time, including temperature, wind, precipitation, visibility, and official government alerts.
  • Custom Alert Rules: Allows users to define their own thresholds for various weather parameters (e.g., wind speed, snow, humidity) to trigger automatic alerts and actions based on specific asset types.
  • Risk Scoring Engine: Assigns a unified risk score (0-100) to every asset, with extreme alerts (90+) indicating emergency situations, while lower scores help guide daily planning.
  • Task Management System: Automatically creates, assigns, and tracks weather-related tasks, allowing for prioritization by urgency, asset, and team.
  • Asset-Centric View: Provides a unified dashboard to monitor all weather-sensitive infrastructure, equipment, and sites with live risk indicators.

This system would integrate multiple data streams into one clear, accessible interface. It would allow officials to see the complete picture in real time and, most importantly, forecast potential crisis points. A dashboard for the BMA could effectively track the Triple Squeeze by:

  • Monitoring the Monsoon: Integrating precise, location based precipitation forecasts from a service like the One Call API 3.0 . This would show not just if it will rain, but how much and how fast, allowing comparison against the city's known 60 mm per hour drainage limit.
  • Modeling Upstream Risk: While direct dam data is proprietary, river levels are not. By combining real time river gauge data with powerful meteorological data available through the Historical Products Collection, it is possible to build predictive models. These models can learn to anticipate how upstream weather patterns will affect river flow days in advance.
  • Tracking the Tidal "Lock": Displaying accurate tide forecasts for the Gulf of Thailand. This allows officials to identify critical windows when drainage will be naturally blocked, a key multiplier for flood risk.

From Data to Actionable Alerts

The true power of such a system lies in its ability to translate data into timely action. When the dashboard's underlying logic detects a high risk alignment, for example, a forecast for heavy rain coinciding with a major upstream release and a high tide, it can do more than just display a warning.

By integrating a tool like the OpenWeather Extreme Weather Dashboard , the system could be configured to automatically disseminate warnings to the BMA's operational centers. This advance notice is a game changer. It provides the critical time needed to pre drain canals, place mobile pumps in high risk areas, and issue clear public advisories, transforming the city's posture from reactive to proactive.

Bangkok is a city of remarkable resilience. By pairing innovative green infrastructure like the Centenary Park with advanced predictive analytics, the city can build a safer, more secure future, ready to meet the complex water challenges of the coming decades.