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Severe Weather Hurricanes and Nor’easters

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Severe Weather. Hurricanes and Nor’easters. Hurricane Fran. Nor’easter:“The Perfect Storm”. Hurricanes Tropical Low Pressure Originate in tropics Originate over the ocean and move onshore Hundreds of miles wide Winds 74+ mph Winds may exceed 140mph. Nor’easters Mid-latitude Lows - PowerPoint PPT Presentation

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Page 1: Severe Weather

Severe Weather

Hurricanes and Nor’easters

Page 2: Severe Weather

Hurricane Fran

Page 3: Severe Weather

Nor’easter:“The Perfect Storm”

Page 4: Severe Weather

Comparison ofHurricanes and Nor’easters

Hurricanes Tropical Low Pressure Originate in tropics Originate over the ocean

and move onshore Hundreds of miles wide Winds 74+ mph Winds may exceed

140mph

Nor’easters Mid-latitude Lows Originate in mid-latitudes Usually originate on land

and move offshore Hundreds of miles wide Winds generally under 74

mph

Page 5: Severe Weather

Hurricane Floyd – at sea

Page 6: Severe Weather

Hurricane Floyd comes ashore

Page 7: Severe Weather

Remnants of Floyd move North

Page 8: Severe Weather

The “Perfect Storm”

Page 9: Severe Weather

Effects of Severe Storms

High windsHeavy precipitation

– Rain with Hurricanes

– Snow or rain with Nor’easters

Inland FloodingCoastal Erosion – damage or loss of beaches

from high wavesStorm Surge (coastal flooding and wave damage)

Page 10: Severe Weather

Coastal Erosion

Page 11: Severe Weather

Coastal Erosion

Page 12: Severe Weather

Coastal Erosion

Page 13: Severe Weather

Storm Surge

Page 14: Severe Weather

Storm Surge – Front Right Quadrant

Page 15: Severe Weather

Nassau County – no storm

Page 16: Severe Weather

Nassau County – Category 1 Hurricane Storm Surge

Page 17: Severe Weather

Nassau County – Category 2 Hurricane Storm Surge

Page 18: Severe Weather

Nassau County – Category 3 Hurricane Storm Surge

Page 19: Severe Weather

Nassau County – Category 4 Hurricane Storm Surge

Page 20: Severe Weather

Suffolk County – no storm

Page 21: Severe Weather

Suffolk County – Category 1 Hurricane Storm Surge

Page 22: Severe Weather

Suffolk County – Category 2 Hurricane Storm Surge

Page 23: Severe Weather

Suffolk County – Category 3 Hurricane Storm Surge

Page 24: Severe Weather

Suffolk County – Category 4 Hurricane Storm Surge