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What is a distinctive warning sign of flash floods, which can also indicate the transportation of a bulk of rock, mud, and soil debris?
What is a distinctive warning sign of flash floods, which can also indicate the transportation of a bulk of rock, mud, and soil debris?
The sound of roaring water
What is the purpose of a flood hazard map, and what do the different colors on the map represent?
What is the purpose of a flood hazard map, and what do the different colors on the map represent?
A flood hazard map shows the susceptibility levels of areas to flood, with red indicating high, violet indicating moderate, yellow indicating low, and white indicating less likely
What human activity can exacerbate flood susceptibility in higher areas, leading to floodwaters accumulating in low-lying places?
What human activity can exacerbate flood susceptibility in higher areas, leading to floodwaters accumulating in low-lying places?
The widespread construction of subdivisions in higher areas
What is a common human factor that contributes to the aggravation of flood risks in areas like Bulacan, according to the flood hazard map?
What is a common human factor that contributes to the aggravation of flood risks in areas like Bulacan, according to the flood hazard map?
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What is the ultimate goal of understanding the factors that contribute to flood susceptibility, according to the text?
What is the ultimate goal of understanding the factors that contribute to flood susceptibility, according to the text?
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What should you prioritize securing before a flood or flash flood besides emergency supplies?
What should you prioritize securing before a flood or flash flood besides emergency supplies?
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What should you do if there is an elderly or a person with a disability in the family during a flood or flash flood?
What should you do if there is an elderly or a person with a disability in the family during a flood or flash flood?
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Why does a more significant storm surge occur when winds blow perpendicular to the coastline?
Why does a more significant storm surge occur when winds blow perpendicular to the coastline?
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What should you do to your house before evacuating during a flood or flash flood?
What should you do to your house before evacuating during a flood or flash flood?
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What should you do after a flood or flash flood when checking your house for damages?
What should you do after a flood or flash flood when checking your house for damages?
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Study Notes
Signs of Flooding
- Typhoons and thunderstorms can lead to flooding and flash floods.
- Roaring water noise signifies potential flash floods, capable of transporting heavy debris.
- Rapid rise in rivers and creeks indicates imminent flooding risk.
- A dam’s break or release signals a likelihood of flooding.
Flood Hazard Map
- A flood hazard map shows varying susceptibility levels to flooding.
- Areas colored red indicate high susceptibility, violet for moderate, yellow for low, and white for less likely.
- Diagonal lines mark areas prone to flash floods on the map.
- Bulacan’s flood hazard map illustrates high-risk flood areas, worsened by garbage clogging drainage systems.
- Human activities, such as building in elevated regions, can hinder proper water drainage, resulting in floods in low-lying areas.
Flood Preparation and Safety Reminders
Before a Flood or Flash Flood
- Avoid areas known for flooding.
- Assemble emergency supplies: food, water, clothes, flashlight, radio, batteries, and medicine.
- Secure valuables, important documents, and pets.
- Create a family emergency plan.
- Monitor surroundings closely during heavy rainfall.
- Move furniture and valuable items to higher locations.
- Turn off and unplug electrical appliances.
- Stay updated with advisories from PAGASA.
During a Flood or Flash Flood
- Keep informed about weather updates from PAGASA.
- Evacuate promptly to higher ground when advised by authorities.
- Ensure home is secured before leaving.
- Remain in evacuation centers until it is safe to return.
- Use flashlights instead of candles or kerosene lamps.
- Avoid using plugged-in electronic devices.
- Do not walk or drive through floodwaters.
After a Flood or Flash Flood
- Remain in evacuation centers until flood danger has passed.
- Continue monitoring weather updates.
- Steer clear of flooded areas.
- Avoid downed utility poles and live wires.
- Inspect home for damage and begin repairs.
- Contact professionals to assess utility safety, such as electricity and plumbing.
Factors Affecting Storm Surge Events
- Storm Winds: Can force water towards the coast; perpendicular winds increase surge impact, causing water to accumulate shoreward due to friction with the seabed.
- Wave Run-up: Waves push water onto shore; strong winds can worsen this effect, potentially damaging structures rapidly and severely.
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Description
Identify the signs of impending floods and flash floods, including sounds of roaring water, rapid rising of rivers, and dam breaks. Learn how to read flood hazard maps to stay safe.
