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Rip Current Statistics - PowerPoint PPT Presentation


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Rip Current Statistics Principal Reasons People Die In A Rip Current Rip Current Formation Types of Rip Currents Rip Currents Safety 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 Rip Current Statistics

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Rip Current

Statistics

Principal Reasons

People Die In

A Rip Current

Rip Current

Formation

Types of

Rip Currents

Rip Currents

Safety

100

100

100

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100

200

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300

300

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rip current statistics
Rip Current Statistics

T/F - Around 100 people die in rip currents each year in the United States

rip current statistics4
Rip Current Statistics

T/F –Which state has the most rip current deaths

a. Florida

b. California

c. Carolinas

d. All of the above

rip current statistics6
Rip Current Statistics

T/F - Rip currents also kill people in the Great Lakes.

rip currents statistics
Rip Currents Statistics

T/ F What are the chances of drowning at a beach protected by lifeguards affiliated with the United States Lifesaving Association (USLA)?

  • One in 2 million
  • One in 18 million
  • One in 23 million
  • One in 50 million
rip currents
Rip Currents

Rip currents account for over ___% of rescues performed by surf beach lifeguards.

  • 20 %
  • 30%
  • 70%
  • 80%
rip current formation
Rip Current Formation

Deceiving, it looks like a nice calm area:

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Rip Current Formation

What is the correct sequence of rip current formation?

  • Wave travels to the beach, waves break on sandbars, water runs off beach through a channel.

B. Waves break on sandbars, wave travels to the beach, water runs off beach through a channel.

C. Water runs off beach through a channel, wave travels to the beach, waves break on sandbars.

D. None of the above.

b waves break on sandbars wave travels to the beach water runs off beach through a channel

B. Waves break on sandbars, wave travels to the beach, water runs off beach through a channel.

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Rip Current Formation

The longer the period between waves:

a. The more energy in the the waves.

b. The faster the waves move.

c. The more momentum the waves carry.

d. A and B

e. A,B, and C

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Rip Current Formation

__________ is proportional to amplitude or height squared

rip current formation20
Rip Current Formation

When do rip currents become most dangerous?

a. During high surf conditions as the wave height and wave period increase.

b. During low surf conditions as the wave height and wave period decrease.

c.During high surf conditions as the wave height and wave period decrease.

d. During low surf conditions as the wave height and wave period increase.

types of rip currents
Types of Rip Currents
  • This type of rip current is short in duration (less than 10 minutes)
    • Enhanced by large swells with more wave energy and volume.
    • Unpredictable temporary conditions and variable locations.
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Types of Rip Currents
  • This type of rip current develops along jetties, piers, and groins.
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Types of Rip Currents
  • This type of rip current is dependent upon shape of coast, bays, points, reefs or sand bars.
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Types of Rip Currents
  • This type of rip current occurs with long shore (parallel to beach) current.
  • Pushes rip away from original location and weakens it.
types of rip currents30
Types of Rip Currents

A long shore current may push swimmer into:

  • Flash rip current
  • Permanent rip current
  • Fixed rip current
  • All of the above
rip currents safety
Rip Currents Safety

T/F Rip currents do not pull people under the water—they pull people away from the shore.

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Rip Currents Safety

T/F Undertow and riptides are the same as rip currents.

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Rip Currents Safety

T/F Rip currents only occur on beaches near the ocean.

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Rip Currents Safety

T/F Rip Currents can be very narrow or more than 50 yards wide.

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Rip Currents Safety

T/F Rip currents do not affect strong swimmers/Olympic swimmers.

principal reasons people die in a rip current44
Principal reasons people die in a rip current

T/F Unaware of hazardous conditions

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Truealways check with the lifeguard on duty and learn about rip currents at www.ripcurrents.noaa.gov before going to the beach or Great Lakes area

principal reasons people die in a rip current50
Principal reasons people die in a rip current

T/F Panic and swim directly toward shore against the rip current, become exhausted and drown

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