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Service Description: This map layer shows tornado touchdown points in the United States, Puerto Rico, and the U.S. Virgin Islands, from 1950 to 2004. Statistical data were obtained from the National Weather Service, Storm Prediction Center (SPC). The SPC data originate from the Severe Thunderstorm Database and the National Oceanic and Atmospheric Administration (NOAA) Storm Data publication. Tornado points show at a scale of 1:5,000,000 and larger. Tornado occurrences are colored by decade and sized by tornado strength based on the Fujita Scale. The national tornado tracks layer shows tornado tracks from 1950 – 2006 at a scale of 1:800,000 and larger.

Map Name: US Historical Tornadoes

All Layers and Tables

Layers:

• US Historical Tornadoes (0)
• Large Scale Data (1)
• HistoricalTornadoes (2)
• TornadoTracks (3)
• Medium Scale Data (4)
• HistoricalTornadoes (5)
• Small Scale Data (6)
• HistoricalTornadoes (7)

Tables:

Description: This map layer shows tornado touchdown points in the United States, Puerto Rico, and the U.S. Virgin Islands, from 1950 to 2004. Statistical data were obtained from the National Weather Service, Storm Prediction Center (SPC). The SPC data originate from the Severe Thunderstorm Database and the National Oceanic and Atmospheric Administration (NOAA) Storm Data publication. Tornado points show at a scale of 1:5,000,000 and larger. Tornado occurrences are colored by decade and sized by tornado strength based on the Fujita Scale. The national tornado tracks layer shows tornado tracks from 1950 – 2006 at a scale of 1:800,000 and larger.

Copyright Text: National Weather Service, Storm Prediction Center / NOAA

Spatial Reference: 3857

Single Fused Map Cache: false

Intial Extent:

XMin: -11477484.4730854
YMin: 3512753.86520525
XMax: -8911058.22497302
YMax: 5712547.79215873
Spatial Reference: 3857

Full Extent:

XMin: -18204076.1936
YMin: 2060971.3916
XMax: -7224635.1223
YMax: 8630417.0492
Spatial Reference: 3857

Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

• Title: USHistoricalTornadoes
• Author: ESRI
• Comments:
• Subject:
• Category:
• Keywords: tornado, tornado tracks
• AntialiasingMode: Normal
• TextAntialiasingMode: None

Supported Interfaces:   REST   SOAP

Supported Operations:   Export Map   Identify   Find   Generate KML