Hampton Hurricane NWS

8/7/2019 Hampton Hurricane NWS

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Taking the pulse of the planetTaking the pulse of the planet

Hurricanes and

Hurricane Readiness

Hurricanes and

Hurricane ReadinessStorm Surge and TidalFlooding A Hampton

Specific Look

Storm Surge and TidalFlooding A Hampton

Specific Look

Bill Sammler

Warning Coordination Meteorologist

NOAAs National Weather Service, Wakefield VA

http://weather.gov/akq


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Storm Surge DefinedStorm Surge Defined

STORM SURGE The abnormal rise in waterlevel directly associated with the wind and

pressure forces associated with a hurricane

Storm Surge Example hurricane makes landfall at high tide

Storm Surge is highest in right forward quadrant near

center as it crosses coast


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Coastal Hurricane ThreatsCoastal Hurricane Threats

Storm Surge is

highest in the

RIGHT FORWARDQUADRANT close

to where center

makes landfall

Storm SurgeStorm Surge


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Storm Surge Example Hugo 1989Storm Surge Example Hugo 1989


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Storm Surge FactorsStorm Surge Factors

Storm Intensity and Size Stronger = Higher Surge

Larger = Larger Area

Affected Storm Speed

Slower Often MeansHigher Surge

Angle to Coast atLandfall Perpendicular Maximizes

Surge (Katrina)

Storm Intensity and Size Stronger = Higher Surge

Larger = Larger Area

Affected Storm Speed

Slower Often MeansHigher Surge

Angle to Coast atLandfall Perpendicular Maximizes

Surge (Katrina)


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Hurricane ThreatsHurricane ThreatsSTORM SURGE STORM INTENSITY

CAT 2 NNW 20 mph

CAT 2 NNW 20 mph

CAT 1 NNW 20 mph

CAT 1 NNW 20 mph

CAT 3 NNW 20 mph

CAT 3 NNW 20 mph


7/32Taking the pulse of the planetTaking the pulse of the planet

Hurricane ThreatsHurricane ThreatsSTORM SURGE STORM SPEED

CAT 3 NNW 10 mphCAT 3 NNW 10 mph





Hurricane ThreatsHurricane ThreatsSTORM SURGE ANGLE TO COAST

CAT 3 N 20 mphCAT 3 N 20 mph

CAT 3 WNW 20 mphCAT 3 WNW 20 mph

CAT 3 NW 20 mphCAT 3 NW 20 mph



Storm Surge contd.Storm Surge contd.STORM SURGE Isabel



Hurricane IsabelHurricane IsabelStorm Surge & Wave ActionStorm Surge & Wave Action

Jordan Point Marina Near Gloucester

Hampton Buckroe Area



And Then There Was ErnestoAnd Then There Was Ernesto

Overriding Principle

Good Wind Forecast =

Good Coastal FloodForecast

Get the Winds Wrong,

And



Ernesto Wind AnimationErnesto Wind Animation



Ernesto Tidal Departures

vs. Wind


vs. Wind

Yorktown VA (USCG)




vs. Wind


vs. Wind

Windmill Point VA



Wachapreague Tides

vs. Ocean City Tides

Wachapreague Tides

vs. Ocean City Tides



Tropical vs. Noreaster FloodingTropical vs. Noreaster Flooding

Yorktown - Ernesto(2006)

Gloucester Point1998 Noreaster

48 Hours

24 Hours

1-2 Tide Cycles(Tropical)

vs.

Several Tide Cycles(Noreaster)


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Storm SurgeStorm SurgeHurricanes vs. Noreasters

Sewells Point - Isabel

Sewells Point

11/2009 Noreaster

Minor Flooding Begins


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Hurricane Stats SE Va.Hurricane Stats SE Va.

Hurricanes Only

All Tropical Cyclones

1933 Hurricane


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Hurricanes in VirginiaHurricanes in Virginia

Ernesto (2006) Inland and Coastal Gaston, Ivan, Frances (2004) Mainly

Inland

Isabel (2003) Inland and Coastal

Floyd (1999) Coastal and Inland

Camille (1969) Inland****

Donna (1960) Coastal only

Hazel (1954) Inland and Coastal 1933 Hurricane Inland and Coastal

1749 Hurricane Willoughby Spit

Ernesto (2006) Inland and Coastal Gaston, Ivan, Frances (2004) Mainly

Inland

Isabel (2003) Inland and Coastal

Floyd (1999) Coastal and Inland

Camille (1969) Inland****

Donna (1960) Coastal only

Hazel (1954) Inland and Coastal 1933 Hurricane Inland and Coastal

1749 Hurricane Willoughby Spit


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Hurricane Stats SE Va.Hurricane Stats SE Va.Hurricane Return Period


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Some H.R. High Water EventsSome H.R. High Water Events

*

***

*

*

*

* - Denotes Event Since 1998


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Hurricane Stats SE Va.Hurricane Stats SE Va.Tropical Cyclones by Year

?


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The End!!The End!!

Are There Any

AdditionalQuestions?

Are There Any

AdditionalQuestions?

[email protected]@noaa.gov


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NWS Wakefield EM/Briefing PageNWS Wakefield EM/Briefing Pagehttp://weather.gov/akq/empage.php

Local

Radar

Hazard/Topic

Specific Tabs

Local

WFOProducts


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NWS Wakefield,VA Briefing Page:http://weather.gov/akq/empage.php

NWS Wakefield,VA Briefing Page:http://weather.gov/akq/empage.php


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NOAA Tides and Currents Site:http://tidesandcurrents.noaa.gov/



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d l i


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NOAA CBOFS Model Site:http://tidesandcurrents.noaa.gov/ofs/cbofs/cbofs.html


d l iO C O S d l Si


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Hurricane Info 24/7/365Hurricane Info 24/7/365National Hurricane Center: http://www.nhc.noaa.gov/


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k h l f h lT ki h l f h l

NOAA Weather RadioNOAA Weather Radio

24/7 Weather Broadcast

IMMEDIATE broadcast of

Watches & Warnings

Newer radios (S.A.M.E.)are programmable to

local areas

24/7 Weather Broadcast

IMMEDIATE broadcast of

Watches & Warnings

Newer radios (S.A.M.E.)are programmable to

local areas

Documents

Hampton Hurricane NWS