Severe Tropical Cyclone Jack

Issued at 8:34 pm WST Monday 21 April 2014. No Tropical Cyclone Advice is current for this system.

Community Threat

Warning Zone
Gales within 24 hours
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Watch Zone
Gales from 24-48 hours
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Past Cyclone Details

Past Location and Intensity Number
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Past Track and Movement
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Current Cyclone Details

Current Location and Intensity Number
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Very Destructive Winds
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Destructive Winds
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Gale Force Winds
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Forecast Cyclone Details
(Up to 72 hours from time of issue)

Forecast Location and Intensity Number
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Very Destructive Wind Boundary
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Destructive Wind Boundary
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Gale Force Wind Boundary
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Most Likely Future Track
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Range of Likely Tracks of Cyclone Centre
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The forecast path shown above is the Bureau's best estimate of the cyclone's future movement and intensity. There is always some uncertainty associated with tropical cyclone forecasting and the grey zone indicates the range of likely tracks of the cyclone centre.

Due to the uncertainty in the future movement, the indicated winds will almost certainly extend to regions outside the rings on this map. The extent of the warning and watch zones reflects this.

This product is designed for land-based communities; mariners should read the coastal waters and high seas warnings.


Severe Tropical Cyclone Jack is gradually weakening as it moving towards the southeast over open waters. Jack is likely to expected to weaken at an accelerated rate during Tuesday. The system poses no direct threat to the Cocos Islands or mainland Western Australia.

Name:  Severe Tropical Cyclone Jack

  Time (WST) Intensity Category Latitude
(decimal deg.)
(decimal deg.)
Estimated Position
Accuracy (km)
0hr 8 pm April 21 3 16.4S 92.4E 75
+6hr 2 am April 22 2 16.8S 92.7E 95
+12hr 8 am April 22 1 17.4S 92.8E 120
+18hr 2 pm April 22 1 18.1S 93.0E 140
+24hr 8 pm April 22 1 18.8S 93.4E 165
+36hr 8 am April 23 tropical low 19.4S 93.7E 200
+48hr 8 pm April 23 tropical low 19.5S 93.9E 235
+60hr 8 am April 24 tropical low 19.4S 94.4E 275
+72hr 8 pm April 24 tropical low 19.5S 95.0E 310

Tropical Cyclone information is also available in MetEye

The next Forecast Track Map will be issued by 3:00 am WST Tuesday