File:Gertie 1971 track.png

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Description
English: Track map of Tropical Cyclone Gertie of the 1970–71 Australian region cyclone season. The points show the location of the storm at 6-hour intervals. The color represents the storm's maximum sustained wind speeds as classified in the Saffir-Simpson Hurricane Scale (see below), and the shape of the data points represent the nature of the storm, according to the legend below.
 
Tropical depression (≤38 mph, ≤62 km/h)
 
Tropical storm (39–73 mph, 63–118 km/h)
 
Category 1 (74–95 mph, 119–153 km/h)
 
Category 2 (96–110 mph, 154–177 km/h)
 
Category 3 (111–129 mph, 178–208 km/h)
 
Category 4 (130–156 mph, 209–251 km/h)
 
Category 5 (≥157 mph, ≥252 km/h)
 
Unknown

Storm type

▲ Extratropical cyclone / Remnant low / Tropical disturbance / Monsoon depression
Date
Source The background image is from NASA. Tracking data is from JTWC
Author Supportstorm
Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
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8 June 2013

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current15:18, 8 June 2013Thumbnail for version as of 15:18, 8 June 20132,700 × 1,669 (3.25 MB)Supportstorm{{Information |Description={{en|Track map of Tropical Cyclone Gertie of the 1970–71 Australian region cyclone season. The points...

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