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Simulated warning information. This is not an actual event



Severe Tropical Cyclone Jonica

Issued at 9:08 am EST Sunday 1 December 2013. Refer to Tropical Cyclone Advice Number 36.

Track map

Community Threat Past Cyclone Details
  Warning Zone ‐ Gales within 24 hours
  Watch Zone – Gales from 24 to 48 hours
  Past Location and Intensity Number
  Past Track and Movement
Current Cyclone Details Forecast Cyclone Details
(at 24 and 48 hours from issue)
  Current Location and Intensity Number
  Very Destructive Winds
  Destructive Winds
  Strong Gale Force Winds
  Forecast Location and Intensity Number
  Very Destructive Wind Boundary
  Destructive Wind Boundary
  Strong Gale Force Wind Boundary
  Most Likely Future Track
  Range of Likely Tracks of Cyclone Centre

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 JONICA, CATEGORY 3, is expected to cross the coast near the Gold Coast this evening.
VERY DESTRUCTIVE WINDS are currently within 30 kilometres of the centre and
DESTRUCTIVE WINDS extend 55 kilometres out from the centre.
GALES extend 130 kilometres out from the centre and are possible between Double Island Point and Coffs Harbour

- People in the path of the very dangerous cyclone should stay calm and remain in a secure shelter - above the expected water level - while the very destructive winds continue.
- Do not venture outside if you find yourself in the eye of the cyclone - (very) destructive winds from a different direction could resume at any time.
- Follow the evacuation advice or directions of Police, Emergency Services personnel and local authorities.

Name: Severe Tropical Cyclone Jonica

  Time (EST) Intensity Category Latitude
(decimal deg.)
(decimal deg.)
Estimated Position
Accuracy (km)
0hr 9 am December 1 3 27.5S 153.9E 9
+6hr 3 pm December 1 3 27.7S 153.7E 80
+12hr 9 pm December 1 3 27.9S 153.4E 100
+18hr 3 am December 2 2 28.2S 153.0E 125
+24hr 9 am December 2 1 28.5S 152.6E 145
+36hr 9 pm December 2 tropical low 29.9S 151.6E 180
+48hr 9 am December 3 tropical low 31.8S 151.4E 220

The next Forecast Track Map will be issued by 10:00 am EST Sunday

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