severe weather hurricanes and nor’easters. hurricane fran
Post on 21-Dec-2015
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Severe Weather
Hurricanes and Nor’easters
Hurricane Fran
Nor’easter:“The Perfect Storm”
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
Hurricane Floyd – at sea
Hurricane Floyd comes ashore
Remnants of Floyd move North
The “Perfect Storm”
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)
Coastal Erosion
Coastal Erosion
Coastal Erosion
Storm Surge
Storm Surge – Front Right Quadrant
Nassau County – no storm
Nassau County – Category 1 Hurricane Storm Surge
Nassau County – Category 2 Hurricane Storm Surge
Nassau County – Category 3 Hurricane Storm Surge
Nassau County – Category 4 Hurricane Storm Surge
Suffolk County – no storm
Suffolk County – Category 1 Hurricane Storm Surge
Suffolk County – Category 2 Hurricane Storm Surge
Suffolk County – Category 3 Hurricane Storm Surge
Suffolk County – Category 4 Hurricane Storm Surge