Flash floods By Aidan. What is Extreme Weather ? Extreme weather is when a weather event is significantly different from the average or usual weather.

Slides:

Advertisements

Similar presentations

RIVER DRAINAGE BASINS.

Advertisements

Location of Boscastle Boscastle is a picturesque, rural village, and is popular with tourists. It is located on the northern coast of Cornwall, in the.

Boscastle – Weather (rain) hazard August 18 th 2004.

Boscastle August 2004 Case Study of a flooding incident in the U.K. What are we learning today Dino? The location of Boscastle. The cause of the flood.

Catastrophic Events.

Introduction to the London Borough of Lewisham. The London Borough of Lewisham is situated in the south east of London, including the areas of Lewisham,

Flooding Case Study - Boscastle

Situated in the South East of the UK, and the North of Cornwall Boscastle is home to nearly 2000 people and attracts 1.2 Million people per year.

Weathering and Erosion

Chapter 9 Water Erosion and Deposition

1 Why do we get floods? Where did all the water come from?

The Lynmouth Flood 1952.

1.Describe the scene (4 lines) 2.Come up with 2 newspaper titles which could accompany this image One serious one not!

Yesterday I went walking. I don’t walk in the mornings. The sun was shining and I felt like some exercise. I saw lots of different animals such as birds,

River Hydrographs Why do we use hydrographs?

Use the map to answer the question.

Flooding is deceptively deadly, especially Flash Flooding.

Adaptation to Climate Change in the UK: A Case Study of the Boscastle Harbour Flood Disaster Tori L. Jennings University of Wisconsin – Madison

Warning Severe Storm Alert!!! Table of Contents Click the lightening bolt to find out about the different types of severe weather that we will be learning.

Flooding in Boscastle 16th August Map of Boscastle. Aerial Photo. MUST: Annotate images and diagrams to show the causes and effects of the Boscastle.

Flooding in Boscastle 16th August Map of Boscastle. Aerial Photo.

Activity 27 Investigating Boomtown’s Weather

Construction And Analysis of Hydrographs ©Microsoft Word clipart.

Run Off Water. Run off water is a result of water not being able to be absorbed by the surface of the ground. Gravity pulls the run off water along the.

Floods. How are floods caused? BenefitsPitfalls What are the benefits of living on a floodplain? Fertile farm land Flat land for building Historically,

What are the causes and consquences of flooding?.

Severe Weather. Thunderstorms Small intense systems that can produce strong winds, rain, lightning and thunder. Need 2 conditions –Air near surface needs.

Severe Weather By Samantha. Hurricanes Hurricanes are powerful storms. They happen a lot in August, September and October. The sky gets dark. There may.

Earth/Environmental Science Geohazards and Precautions.

RIVER DRAINAGE BASINS. A RIVER SYSTEM ACTS LIKE A SYSTEM OF DOWNPIPES AND GUTTERING ON A HOUSE - IT ALLOWS THE MOVEMENT OF RAINWATER INTO THE SEA.

By Ms. McKalpain for her classroom. Water is something everyone needs. But when there is too much, or too little, we can run into BIG problems!

The small Cornish village of Boscastle is not prone to regular annual flooding as many locations affected by extreme flooding events are. The village.

Floods By: Priya Patel T-4 Chapter 17 section 3. Flash floods Flash floods A flash flood is a sudden flood of great volume, usually caused by heavy rain.

“Boscastle: The village washed on to the map”. Write a question about the image in your book.

Erosion! Once a rock is weathered, it usually moves from one place to another. This process is called erosion.

Floods: “Rain Rain, go away”!! Brooke Porter Science 1st Mr. Shepard.

Explorers Education Programme: Flooding & Coastal Communities.

What are the effects of floods?

Floods By:Codie Mullins. Facts About Floods Six inches of fast flowing water will knock you off your feet. Four inches of water will ruin your carpet.

A flood happens when too much rain falls brought by stormy weather and stormy winds. Rivers burst their banks and the water spills onto the land strong.

Homework to complete this PowerPoint exercise and create a case study to add to your notes. Due Friday 22 nd Jan 2016.

Investigation 3 Go with the Flow. The Grand Canyon is one place where erosion has taken place on a grand scale. Geologists are still trying to figure.

Boscastle Floods, 16 th August Boscastle Floods, 16 th August 2004 – Causes:  Over 70mm of rain fell in just two hours  The ground was already.

A RIVER SYSTEM ACTS LIKE A SYSTEM OF DOWNPIPES AND GUTTERING ON A HOUSE - IT ALLOWS THE MOVEMENT OF RAINWATER INTO THE SEA.

Weather and Climate Weather is becoming more extreme Evidence Evidence Events e.g. Boscastle 2004 and summer 2003 heatwave Events e.g. Boscastle 2004 and.

A flash flood that shocked the country.

Boscastle flooding 2004.

Boscastle - the most frightening flood of the decade?

Marium, Alex, Billy, Ollie

Acknowledgments: Wikipedia, the free encyclopedia

Flooding in Boscastle 16th August 2004.

Introduction to the London Borough of Lewisham

Boscastle Flood Tash Merrett

What does flooding look like?

What causes rivers to flood?

Chapter 9 Water Erosion and Deposition

Flooding Expected Learning: To learn about:

Why do rivers flood?.

Flooding Expected Learning: To learn about:

Freshwater Systems = <1 % of Earth’s total water!

What happens after weathering?

Boscastle Floods, 2004 To compare the causes and impacts of flooding in Boscastle (2004) to Lynmouth (1952). Starter: Write down some ideas for a flood.

Flooding and River Management

An Introduction to Flooding

Storm Hydrographs By: Sofia Gastelu.

Presentation transcript:

Flash floods By Aidan

What is Extreme Weather ? Extreme weather is when a weather event is significantly different from the average or usual weather pattern. This may take place over one day or a period of time. A flash floods and heatwaves are two examples of extreme weather in the UK.

What is a Flash Flood Flash flooding happens when rain falls so fast that the ground cannot cope, or drain it away, fast enough. Roads can become like rivers and if there is a lot of water, it can flood buildings and carry cars away. So, if the rain is falling too fast for the ground or drains to cope, there is a risk of flash flooding.rain

How Do They Occur ? Most rivers flow fairly gently as they slope slowly towards the sea. Therefore, when a river floods it does so quite slowly as it takes time for the rain to percolate through the ground and into the rivers and out to sea − allowing time for some warning. With flash flooding there is often very little time between the rain falling and flash flooding occurring.

Example of a Flash Flood The village of Boscastle in Cornwall experienced flash flooding on 6 th August 2004 when an exceptional amount of rain fell over eight hours. Heavy thundery showers developed over the moors to the south west of Boscastle. A small, steep river flows though Boscastle and the thundery showers came one after another in a short space of time, over the same spot at the head of the river. There was simply too much water for this small river and the surrounding hillside to cope with, and the water gushed rapidly down the steep slopes into Boscastle.

Flash Floods in the News BBC News Flash floods hit Athens following torrential rain