Flash Flood Safety Basics During Severe Weather

Flash floods are sudden, rapid surges of water that can occur within minutes of heavy rainfall, dam breaks, or rapid snowmelt. They are among the most dangerous weather-related events in the United States, often leading to fatalities and significant property damage. (nsc.org)

What Are Flash Floods?

Flash floods are characterized by a swift rise in water levels, typically within six hours of the causative event. They can develop in various terrains, including urban areas, steep terrains, and regions with poor drainage systems. (nsc.org)

Why Are Flash Floods Dangerous?

Flash floods can move homes and cars, uproot trees, and destroy bridges. They can occur with little to no warning, making them particularly hazardous. According to the National Weather Service, "Flash floods are short-term events occurring within six hours of the causative event (heavy rain, dam break, levee failure, rapid snowmelt and ice jams) and often within two hours of the start of high-intensity rainfall." (nsc.org)

How to Stay Safe During a Flash Flood

1. Stay Informed: Monitor local weather reports and heed flood watches and warnings.

2. Avoid Floodwaters: Never walk, swim, or drive through floodwaters. Just six inches of moving water can knock you down, and one foot of moving water can sweep your vehicle away. (ready.gov)

3. Seek Higher Ground: If you are in a flood-prone area, move to higher ground immediately.

4. Avoid Bridges Over Fast-Moving Water: Floodwater can wash out a bridge with little or no warning. If water is moving quickly under a bridge, avoid driving over the bridge. (allstate.com)

5. Stay Alert at Night: Flash floods are especially dangerous at night when it's harder to recognize the dangers of flooding. (weather.gov)

What to Do Before a Flood

• Understand Your Flood Risk: Learn about the types of flooding that can impact your home and community. (redcross.org)

• Make a Plan: Designate a place on higher ground that you can get to quickly. Plan to move to higher ground before flooding begins. (redcross.org)

• Prepare an Emergency Kit: Assemble a kit with essentials like water, non-perishable food, medications, and important documents.

What to Do After a Flood

• Wait for Official All Clear: If you evacuated, wait for officials to say it is safe before going home. (redcross.org)

• Avoid Fallen Power Lines: They can electrocute you. (redcross.org)

• Use Flashlights, Not Candles: To reduce fire risk. (redcross.org)

Conclusion

Flash floods are unpredictable and can be life-threatening. By staying informed, preparing in advance, and following safety guidelines, you can significantly reduce the risks associated with these events.

Highlights:

• Why Flash Flooding Is Getting Worse Across the U.S. and How to Stay Safe, Published on Tuesday, July 15