Parent Layer:
Risk of Coastal Flooding
Name: Storm Surge by Hurricane Severity
Display Field: Zone
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: As part of the Framework, the extent of coastal flood hazard was completed by using readily availableSea, Lake, and Overland Surge from Hurricanes (SLOSH) modeling conductedby NOAA. SLOSH modeling of hurricane intensities is categorized by the Saffir-Simpson hurricane wind scale and includes other characteristics of hurricanes that can vary considerably along the coast, such as angle of approach to the shoreline, width and slope of the continental shelf, astronomical high tide level, and local geographic features (FEMA 2011). The SLOSH model outputs inform hurricane evacuation studies. The inundation zones identified by the SLOSH model depict areas of possible flooding from the maximum of maximum (MOM) event within the five categories of hurricanes by estimating the potential surge inundation during a high-tide landfall. Although the SLOSH inundation mapping is not referenced to a specific probability of occurrence (unlike FEMA flood mapping, which presents the 0.2-percent- and 1-percent-annual-chance flood elevation zones) nor does it include wave heights, the flooding inundation from a Category 4 hurricane making landfall during high tide represents an extremely lowprobability of occurrence but high-magnitude event.The intent of the NACCS is to generate a spatially comprehensive, but first-order approximation of flooding vulnerability across the entire northeastern Atlantic coastal region. The use of the SLOSH model MOM was necessary based on the very large spatial extent of the study area and the fact that it is currently the most advanced storm surge modeling available for the entire study area. The extent of the Category 4 MOM represents the maximum storm tide levels caused by extreme hurricane scenarios across the region, and, therefore, provides a reasonable approximation of the most extreme flooding extent. The State and District of Columbia Appendix presents the SLOSH hydrodynamic modeling inundation mapping associated with Categories 1 through 4 hurricanes used for evacuation modeling.
Service Item Id: b5467ef1977b45ccaf09286f6dd8ff32
Copyright Text:
Default Visibility: false
MaxRecordCount: 1000
Supported Query Formats: JSON, geoJSON, PBF
Min Scale: 0
Max Scale: 0
Supports Advanced Queries: true
Supports Statistics: true
Has Labels: false
Can Modify Layer: false
Can Scale Symbols: false
Use Standardized Queries: true
Supports Datum Transformation: true
Extent:
XMin: -8616216.0868
YMin: 4376573.057899997
XMax: -7784401.9673999995
YMax: 5330976.2026999965
Spatial Reference: 102100
(3857)
Drawing Info:
Renderer:
Unique Value Renderer:
Field 1: Storm_Cat
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
Default Label: N/A
UniqueValueInfos:
-
Value: 1
Label: Category 1
Description: N/A
Symbol:
Style: esriSFSSolid
Color:
[0, 38, 115, 255]
Outline:
-
Value: 2
Label: Category 2
Description: N/A
Symbol:
Style: esriSFSSolid
Color:
[0, 77, 168, 255]
Outline:
-
Value: 3
Label: Category 3
Description: N/A
Symbol:
Style: esriSFSSolid
Color:
[115, 178, 255, 255]
Outline:
-
Value: 4
Label: Category 4
Description: N/A
Symbol:
Style: esriSFSSolid
Color:
[190, 210, 255, 255]
Outline:
Transparency: 0
Labeling Info:
Advanced Query Capabilities:
Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: false
Supports Query With Current User: true
HasZ: false
HasM: false
Has Attachments: false
HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText
Type ID Field: null
Fields:
-
OBJECTID
(
type: esriFieldTypeOID, alias: OBJECTID
)
-
Shape
(
type: esriFieldTypeGeometry, alias: Shape
)
-
Zone
(
type: esriFieldTypeString, alias: Zone, length: 10
)
-
Storm_Cat
(
type: esriFieldTypeSmallInteger, alias: Storm_Cat
)
-
disso
(
type: esriFieldTypeSmallInteger, alias: disso
)
-
Shape_Leng
(
type: esriFieldTypeDouble, alias: Shape_Leng
)
-
Shape_Length
(
type: esriFieldTypeDouble, alias: Shape_Length
)
-
Shape_Area
(
type: esriFieldTypeDouble, alias: Shape_Area
)
Supported Operations:
Query
Query Attachments
Query Analytic
Generate Renderer
Return Updates
Iteminfo
Thumbnail
Metadata