National Hurricane Program Tools and ResourcesTrack Errors (1989-2015) Intensity Errors (1990-2015)...
Transcript of National Hurricane Program Tools and ResourcesTrack Errors (1989-2015) Intensity Errors (1990-2015)...
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Presenter’s Name June 17, 2003
National Hurricane Program Tools and Resources
FEMA Region II Hurricane Program
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Presenter’s Name June 17, 2003
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Presenter’s Name June 17, 2003
Why We Plan…“Plans are nothing, planning is everything.”
-Dwight D. Eisenhower
3
US Army Center of Military History
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Plan
Train
Exercise
RespondEffective
Emergency
Operations
Paradigm
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Respond
Exercise
Train
Plan
…or the alternative
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Tropical Cyclone Formation and Hazards
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Seasonal Hurricane Activity
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Tropical Cyclone Formation
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Wind
StormSurge
Flooding
Tornados
Hurricane Hazards
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o Almost 50% of deaths are due to storm surge
o Over 80% of deaths are due to water
o Wind causes less than 10% of deaths
2,544 Fatalities From 1963–2012
Atlantic Tropical Cyclone Deaths
Edward N. Rappaport, 2014: Fatalities in the United States from Atlantic Tropical Cyclones: New Data and Interpretation. Bull. Amer. Meteor. Soc., 95, 341–346.
Storm Surge
49%Rain
27%
Surf
6%
Wind
8%
Tornado
3%
Other
1%Offshore
6%
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Category 1 Wind Damage
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Saffir-Simpson Scale and Surge
Beaumont, 2005
SE Texas, 2005
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Factors Affecting Storm Surge: Central pressure
Storm size and intensity: size and strength of the wind field
Forward speed
Bathymetry: slope of sea floor near the shore
Wave Set up (Right side of Storm)
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Rainfall
The speed of movement is the primary influence on amount of rain
Intensity of storm not a factor in amount of rain produce
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Hazards: Flooding
•http://water.weather.gov/
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Hazards: Tornados
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Tornadoes-Far from the Center
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Critical Considerations: Evacuation
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Medical Evacuation
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Critical Considerations: Shelter and Transportation
The transportation component of evacuation
is based on the numbers of:
People needing evacuation
Availability of privately owned transportation
Numbers of evacuees with special mobility and medical,
functional or access needs
The time available to conduct operations
The distance to (and availability of)
shelters
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National Hurricane Center Forecast Products
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NHC Track and Intensity Forecast ErrorsTrack Errors (1989-2015) Intensity Errors (1990-2015)
2011-2015 Average Error:
24-hr: 42.0 nautical miles
48-hr: 73.8 nautical miles
2011-2015 Average Error:
24-hr: 8.3 knots
48-hr: 12.3 knots
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New for 2017
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New for 2017
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Tropical Cyclone Graphics: In kml and Shapefile
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Potential Tropical Cyclones - 2017 The NWS now has the option to issue
watches and warnings for disturbances that
are not yet a tropical cyclone, but pose a
threat to bringing tropical cyclone conditions
to land within 48 hours.
Tropical Cyclone Watch and Warning criteria
will not change
Watch-conditions possible within 48h
Warning-conditions expected within 36h
Systems would be identified as:
Potential Tropical Cyclones
Same numbering system as
depressions- “One”, “Two”, etc.
The standard tropical cyclone products
will be issued
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Enhanced Messaging from the NHC
Special messages will be posted to the NHC website and Twitter simultaneously to indicate
when advisories will be initiated
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Storm Surge Hazard Maps: CONUS
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Storm Surge and Evacuation Zones
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New(ish) Storm Surge Products
Potential Storm Surge
Flooding Map
o Guidance on where
inundation from surge
could occur and the height
above ground the water
could reach
o Operational in 2016
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o Provides a quantitative risk assessment for
decision makers
o Depicts a reasonable worst-case scenario at any
individual location
o Inundation levels have a 10% chance of
being exceeded
o Available about 60 to 90 minutes following the
advisory release
o First map issued at the same time as the initial
hurricane watch or in some cases, with a tropical
storm watch
Potential Storm Surge Flooding Map
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o Areas that are often inundated by seawater without a storm are masked in gray
o Allows users to focus on areas that could experience consequential flooding of
normally dry ground
Intertidal Zone/Estuarine Wetland Mask
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o DOES NOT account for:
Wave action
Freshwater flooding from rainfall
Riverine discharge
Flooding resulting from levee failures
Flooding inside levee systems
Overtopping of levees
NHC Potential Storm Surge Flooding Map
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New Operational Storm Surge Products
Storm Surge Watch / Warning
Graphic
o Highlights areas that have a
significant risk of life-threatening
surge, but does not provide depth
of water
o Operational in 2017
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Storm Surge Watch & Warning Graphic
o Intended to enhance public response to instructions from local
officials, and, ultimately, to help guide EM decisions
o Current threshold is 3 ft above ground level
o Issued 48 hours before possibility of life-threatening surge, or
other hazards that would hinder evacuations
o Collaboration of NHC Hurricane Specialists, surge experts, and
local NWS WFOs
o Introduces a storm surge watch/warning
o Operational in 2017
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Watch: The possibility of life-threatening inundation from rising water moving inland from the shoreline somewhere within the specified area, generally within 48 hours, in association with a tropical, subtropical or post-tropical cyclone. The watch may be issued earlier when other conditions, such as the onset of tropical-storm-force winds, are expected to limit the time available to take protective actions for surge (e.g., evacuations). The watch may also be issued for locations not expected to receive life-threatening inundation, but which could potentially be isolated by inundation in adjacent areas.
Warning: The danger of life-threatening inundation from rising water moving inland from the shoreline somewhere within the specified area, generally within 36 hours, in association with a tropical, subtropical or post-tropical cyclone. The warning may be issued earlier when other conditions, such as the onset of tropical-storm-force winds, are expected to limit the time available to take protective actions for surge (e.g., evacuations). The warning may also be issued for locations not expected to receive life-threatening inundation, but which could potentially be isolated by inundation in adjacent areas.
Proposed Storm Surge Watch and Warning Definitions
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Viewable in Interactive Map Interfacehttp://www.nhc.noaa.gov/surge/inundation/
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http://www.nhc.noaa.gov/gis/
GIS Data Available for Download
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Hurricane Evacuation Studies (HES) Funded By: FEMA/USACE
Purpose: Provide emergency management
officials information that will assist in
hurricane evacuation decisions.
Objective: Determine:
• Area of Hurricane Impact
• Who/What Is In That Area
• How People There Will Respond
• Shelter Requirements
• Evacuation Clearance Times
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Presenter’s Name June 17, 2003
•Federal Emergency Management
Agency
•Army Corps of Engineers
•NOAA: National Weather Service &
Coastal Services Center
•State & Local Emergency
Management
•Regional Planning Councils
•Volunteer Organizations
HES Partnerships
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Presenter’s Name June 17, 2003
Roles and Responsibilities
55
• Coordination• Subject Matter Expertise• Training
• Project Management• Training• Tech Support
• SLOSH Basin Development• Tech Support
HES
Local Hurricane
Plans
State Evac and Support plans
Regional Ops and Support
plans
National planning and
Ops
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Presenter’s Name June 17, 2003
Hurricane Evacuation Study ComponentsH
azar
ds
An
alys
is • SLOSH Model Development
• Surge MOMS
• Surge Maps
• Evacuation Zones
Vu
lner
abili
ty A
nal
ysis • Identify at
Risk:
• Populations
• Infrastructure
• Critical Facilities
• Local Planning Data
Beh
avio
ral A
nal
ysis • Public
Survey
• Analysis of Survey Responses
• Results for Input into Shelter and Trans. Analysis
Shel
ter
An
alys
is • Determining the Shelter Need
• Estimate Number of Shelter Spaces
• Potential Vulnerability
• Identify Shelter Deficit
Tran
spo
rtat
ion
An
alys
is • Analysis of Traffic Volumes, Evac. Routes, and Destinations
• Traffic Patterns
• Evacuation Clearance Times
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
1-2 2 3-5 Shadow
Pe
rce
nta
ge
of R
esp
on
se
s
Evacuation Zone
A Overall With Order
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Presenter’s Name June 17, 2003
Hurricane Evacuation Study Area
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Presenter’s Name June 17, 2003
Wind Storm Surge Flooding
Hazards Analysis
Helping coastal decision makers understand the maximum impact
associated with the main hurricane hazard - Storm Surge
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Presenter’s Name June 17, 200359
Hazards Analysis Understanding Storm Surge Potential
• Storm surge has the highest
potential for death and damage
• Storm surge is the main reason
we evacuate the coast
• Hurricane Evacuation Studies
utilize SLOSH for storm surge
estimation
Hurricane Ike Damage, TX. Photo: FEMA
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Presenter’s Name June 17, 2003
What are the zones based on?
Storm surge vulnerable areas
created using the SLOSH model
Maximum of Maximum Storm
Surge Potential “MOM”
• Consist of thousands of runs
• Different intensities, pressure,
angles of approach, forward
speed, wind radii
• One per category – Worst
case scenarios
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Presenter’s Name June 17, 2003
o MEOWs — Maximum
storm surge using storms of
varying forward speed,
size, intensity, and location,
approaching the coast from
one direction.
SLOSH Model
MEOWs
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Presenter’s Name June 17, 2003
o MOMs — Created by
combining all MEOWs for
each category and showing
the maximum value in each
grid cell
SLOSH Model
MOMs
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Presenter’s Name June 17, 2003 63
Storm Surge Atlas – Map Books & GIS Files Providing a picture of the maximum storm surge vulnerability
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Presenter’s Name June 17, 200364
Evacuation ZonesQuestion: How does an Emergency Manager communicate the maximum
storm surge risk to the public?
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Presenter’s Name June 17, 2003
Vulnerability Analysis
Helping coastal decision makers identify Who may need to evacuate and
What is at risk
• Citizens residing in
surge
prone areas
• Critical facilities
• Mobile/Manufactured
home communities
• Vulnerable shelters
• Roadway network,
bridges, tunnels
• Other areas to be
considered?
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Presenter’s Name June 17, 2003
Hurricane Behavioral Analysis
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Presenter’s Name June 17, 2003
SOURCES OF INFORMATION
U. S. CENSUS
Population Size
Demographics
Household Composition
Home Tenancy
Language
Vehicles
BEHAVIORAL STUDY
Attitudes About Risk
Hurricane Experience
Sources of Information
Evacuation Intent
Transportation Needs
Evacuation Destination
Evacuation Route
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Presenter’s Name June 17, 2003
BEHAVIORAL STUDY METHODOLOGY
SURVEY DATA COLLECTION METHODS
Face-to-Face Interviews
Mailed Questionnaire
Internet Questionnaire
Telephone Survey – Cell and Landline
Pros and Cons – Factors such as seasonal population, internet access etc.
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Presenter’s Name June 17, 2003
SOME EXAMPLES OF QUESTIONS
To what extent are you concerned about the threat of a hurricane? Are you very concerned,
somewhat concerned, or not concerned?
How likely do you think it is that your home would ever be flooded as a result of a category 1
hurricane” Is it very likely, somewhat likely, or not likely at all?
If a Category 3 or above hurricane was threatening your community, how likely is it that you
would leave your home? Is it very likely, somewhat likely, or not likely at all?
On a scale of 1 to 5, with 5 being the most likely, how likely do you think it is that you will leave If
government officials issue a mandatory evacuation order for a hurricane for your area?
Considering both wind and flooding, do you think it would be safe for you to stay in your home if
a category 3 hurricane with 125 MPH winds passed directly over your location?
BEHAVIORAL STUDY METHODOLOGY
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Presenter’s Name June 17, 2003
Intended Destination and Distance Expect to Travel
Simple Percentages
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Presenter’s Name June 17, 2003
Coastal Mississippi Behavioral Study. 2011. Morrow & Gladwin through Dewberry for FEMA and UCACE
HIG
H R
ISK
MED
IUM
RIS
K
LOW
RIS
K
TOTA
L
0%
20%
40%
60%
80%
100%
34%19%
6%17%
28%
22%
7%
18%
38%
59%
87%
65%
LIKELIHOOD OF SURGE DAMAGE BY
EVACUATION ZONE
LIKELIHOOD OF DAMAGE
VERY SOMEWHAT NOT
Cross-Tabulation
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Presenter’s Name June 17, 2003
Spatial Analysis
Hampton Road VA Evacuation Study. 2010. Morrow & Gladwin through Dewberry for FEMA& USACE
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Presenter’s Name June 17, 2003Coastal Georgia Evacuation Study. 2010. Morrow & Gladwin through Dewberry. 2009 for FEMA and USACE.
Each dot = one interview
Not Very Likely
Somewhat Likely
Very Likely
Likelihood Would Be
Flooded in Major
Hurricane:
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Presenter’s Name June 17, 2003
BOTTOM LINE
Behavioral studies can provide important information for evacuation
planning
They involve a complex process
Methodology is extremely important
Destination data helps identify where people will go and where their final
destinations may be. It's this information that drives the route choices
used in the transportation modeling
Behavioral analysis data can be used to develop evacuation participation
rates to provide insight to scenarios that may be something less than the
worst case
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Presenter’s Name June 17, 2003
Some Key Findings
Serious under-concern about surge
Evacuation intent over-stated
Evacuation intent highest (and better predictor of actual behavior)
For major storms
For mandatory or ordered evacuations
For households with children
With recent real hurricane experience
Often get “False Experience” effect
Earl/Irene/Sandy?
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Presenter’s Name June 17, 2003
Shelter AnalysisUnderstanding Shelter Need
Key Sheltering Issues:
• Location/Identification
• Capacity
• Response Rates
• Coordination between Organizations
• Pet Friendly or Co-located?
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Presenter’s Name June 17, 2003
Shelter Analysis ExampleUnderstanding Shelter Capability in Delmarva
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Presenter’s Name June 17, 2003
Inputs
Demographics
Behavioral
Assumptions
Evacuation Routes
Levels of Service
(Roadway Capacities)
Travel Destinations
Evacuation Scenarios
Transportation AnalysisThe Transportation Analysis utilizes data produced by the other analysis
to determine traffic congestion and clearance times
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Presenter’s Name June 17, 2003
Transportation AnalysisHelping coastal decision makers understand traffic congestion potential
based upon evacuation decisions
Products of the Transportation Analysis
• Traffic Patterns (bottle necks)
• Evacuating Vehicles
• Clearance Time tables
• Variables of:
• Response
• Population
• Evacuation Scenarios (one
way, Multi state)
• Storm Category
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Presenter’s Name June 17, 2003
Evacuation Clearance Times “Response Curves” used in modeling evacuation behavior
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Presenter’s Name June 17, 2003
Transportation AnalysisA sample of Transportation Output products:
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Presenter’s Name June 17, 2003
Evacuation Clearance Times Definition
Begins when the first evacuating vehicle enters
the road network, ends when the last vehicle
reaches an assumed point of safety
-Includes travel time and waiting in traffic
congestion (does not relate to any one
particular vehicle)
-Driven by bottlenecks
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Presenter’s Name June 17, 2003
Clearance Time =
48hrs
Mobilization Time
Travel Time
Queuing Delay Time (traffic)
Evacuation Start
Time
L= -48 L=0L= -36 L= -24 L= -18 L= -12 L= -6 L=+6 L=+12 L=+18 L=+26
Hazards
Forecasted Onset of
TS winds or Hazards
Evacuation Clearance Times Timeline
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Presenter’s Name June 17, 2003 84
High Water Mark Survey
High Wind Survey
Local/State EMA
Meetings
Behavioral Analysis
Transportation Analysis
Findings Report
Other reports as
needed
Post Storm Assessment To understand how HES products are utilized, the following are
conducted:
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Presenter’s Name June 17, 2003
HES contain valuable information for planning and operational purposes:
Technical Data Report
Hazards Analysis: Wind, Surge, Flooding
Vulnerability Analysis: Who is at risk? What is at risk?
Behavioral Analysis: What do residents do? Where do they go?
Shelter Analysis: Capacity, Anticipated Use
Transportation Analysis: Roadway network
Surge Atlases & Evacuation Zones
Evacuation Clearance Times
Decision Support Tools
85
Summary: Hurricane Evacuation Studies
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Presenter’s Name June 17, 2003
New Jersey Hurricane Evacuation Study Hazard Analysis
Vulnerability Analysis
o Estimated 80-85% complete.
o Need to confirm and finalize Evacuation Zones for comment.
Behavioral Analysis
o Surveys completed. Full report documents will be developed.
Shelter Analysis
o Need to confirm and finalize data sources for shelter inventory with local jurisdictions.
o Shelter vulnerability and demand will follow.
Transportation Analysis
o In the process of developing Scope of Work for Transportation Analysis.
86
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Presenter’s Name June 17, 2003
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Presenter’s Name June 17, 2003
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Presenter’s Name June 17, 2003
Hurricane Liaison Team (HLT)
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Presenter’s Name June 17, 2003
Any Questions?
Chris MooreHurricane Program ManagerFEMA Region II-Response DivisionOperational Planning Branch(M) 202-704-3789(O) [email protected]