View In:   ArcGIS Online Map Viewer

Name: SRK_Lightning_Hazard

Display Field: LDR.SRK_Lightning_Hazard.AREA

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Lightning data were collected using the Southern African Lightning Detection Network (SALDN), a ground‑based VLF/LF lightning detection system operational since 2006. Individual lightning strokes detected by multiple sensors were grouped into flashes using space–time clustering algorithms. Daily lightning flash counts were aggregated spatially onto a regular grid and temporally averaged over a multi‑year period to produce climatological averages. The primary output is average annual cloud‑to‑ground lightning flash density (flashes/km²/year). Additional averaged parameters include average flash multiplicity (strokes per flash), median peak current (kA), and average percentage of positive‑polarity lightning.

Service Item Id: f5f7764ef81a4c5ab01d3b0b00394106

Copyright Text: Data Owner South African Weather Service (SAWS) Data Producer South African Weather Service – Nowcasting and Very Short Range Forecasting Group Sensor / Network Provider Vaisala Lightning Detection System (SALDN)

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Supports Datum Transformation: true

Extent:

XMin: 28.873479941000028
YMin: -31.082629941999983
XMax: 32.89400100700004
YMax: -26.804419937999967
Spatial Reference: 4148  (4148)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: Lightning_Hazard
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: 2
  Label: 2
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [242, 203, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [0, 0, 0, 255]
  Width: 0
• Value: 3
  Label: 3
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [227, 131, 0, 255]
  Outline:
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  Color: [0, 0, 0, 255]
  Width: 0
• Value: 4
  Label: 4
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [242, 90, 0, 255]
  Outline:
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  Width: 0
• Value: 5
  Label: 5
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [255, 34, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [0, 0, 0, 255]
  Width: 0
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: true
Supports Returning Geometry Centroid: true
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: false
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: Lightning_Hazard

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID, editable: false, nullable: false, defaultValue: null, modelName: OBJECTID )
• LDR.SRK_Lightning_Hazard.AREA ( type: esriFieldTypeDouble, alias: LDR.SRK_Lightning_Hazard.AREA, editable: true, nullable: true, defaultValue: null, modelName: LDR.SRK_Lightning_Hazard.AREA )
• PERIMETER ( type: esriFieldTypeDouble, alias: PERIMETER, editable: true, nullable: true, defaultValue: null, modelName: PERIMETER )
• LIGHTNING_ ( type: esriFieldTypeDouble, alias: LIGHTNING_, editable: true, nullable: true, defaultValue: null, modelName: LIGHTNING_ )
• LIGHTNING1 ( type: esriFieldTypeDouble, alias: LIGHTNING1, editable: true, nullable: true, defaultValue: null, modelName: LIGHTNING1 )
• FLASH_DENS ( type: esriFieldTypeSmallInteger, alias: FLASH_DENS, editable: true, nullable: true, defaultValue: null, modelName: FLASH_DENS )
• Lightning_Hazard ( type: esriFieldTypeDouble, alias: Lightning_Hazard, editable: true, nullable: true, defaultValue: null, modelName: Lightning_Hazard )
• Shape__Area ( type: esriFieldTypeDouble, alias: Shape.STArea(), editable: false, nullable: true, defaultValue: null, modelName: Shape.STArea(), required: true )
• Shape__Length ( type: esriFieldTypeDouble, alias: Shape.STLength(), editable: false, nullable: true, defaultValue: null, modelName: Shape.STLength(), required: true )

Types:

ID: 2
Name: 2
Domains:
Templates:
• Name: 2
  Description:
  Prototype:
  Lightning_Hazard: 2
  FLASH_DENS: null
  LDR.SRK_Lightning_Hazard.AREA: null
  PERIMETER: null
  LIGHTNING_: null
  LIGHTNING1: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: 3
Name: 3
Domains:
Templates:
• Name: 3
  Description:
  Prototype:
  Lightning_Hazard: 3
  FLASH_DENS: null
  LDR.SRK_Lightning_Hazard.AREA: null
  PERIMETER: null
  LIGHTNING_: null
  LIGHTNING1: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: 4
Name: 4
Domains:
Templates:
• Name: 4
  Description:
  Prototype:
  Lightning_Hazard: 4
  FLASH_DENS: null
  LDR.SRK_Lightning_Hazard.AREA: null
  PERIMETER: null
  LIGHTNING_: null
  LIGHTNING1: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: 5
Name: 5
Domains:
Templates:
• Name: 5
  Description:
  Prototype:
  Lightning_Hazard: 5
  FLASH_DENS: null
  LDR.SRK_Lightning_Hazard.AREA: null
  PERIMETER: null
  LIGHTNING_: null
  LIGHTNING1: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

Capabilities: Query,Create,Update,Delete,Uploads,Editing

Sync Can Return Changes: false

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Child Resources:   Field Groups   Contingent Values

Supported Operations:   Query   Query Analytic   Apply Edits   Add Features   Update Features   Delete Features   Calculate   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata   Update Metadata