Major Tropical Cyclone NE Australia

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Discussion Overview

The discussion centers around the impact and aftermath of Cyclone Debbie, a major tropical cyclone that affected Queensland, Australia. Participants share observations about the cyclone's intensity, rainfall amounts, and subsequent flooding, as well as personal experiences related to the storm.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants note that Cyclone Debbie was a CAT 4 storm with sustained winds near the center of 185 km/h and gusts potentially exceeding 270 km/h.
  • There are reports of high storm surges along the coast and significant rainfall, with one participant mentioning a recorded 900 mm of rain, equating to approximately 3 feet.
  • Participants discuss the ongoing flooding in areas like Rockhampton, where the river is expected to peak at about 9 meters above normal levels due to delayed runoff from tributaries.
  • One participant expresses difficulty in comprehending the amount of rain experienced, comparing it to their own annual average rainfall of 915 mm.
  • Another participant shares a personal anecdote about a previous flooding event, highlighting the challenges of comparing different rainfall events.

Areas of Agreement / Disagreement

Participants generally agree on the severity of Cyclone Debbie and its impact on Queensland, but there are varying perspectives on the extent of rainfall and flooding experienced in different regions. The discussion remains unresolved regarding the broader implications of such extreme weather events.

Contextual Notes

There are limitations in the discussion regarding the specific definitions of rainfall measurements and the timeframes over which they occurred. The exact impacts of the cyclone on different areas are also not fully detailed.

Who May Find This Useful

This discussion may be of interest to those studying meteorology, climate impacts, or individuals affected by extreme weather events, as well as residents of regions prone to cyclones and flooding.

davenn
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Cyclone Debbie is a major CAT 4 storm at the time it hit the Queensland coast in the Bowen area. It has sustained winds near the centre of 185 kilometres per hour with wind gusts to 260 km/hr have been recorded.
The Bureau of Meteorology (Australian weather service) suggest the possibility that gusts could exceed 270 km/hr near the eye.
High storm surges have already been recorded along the coast.
The storm is expected to deteriorate quickly after it is over land and away from the warm tropical seas.

Satellite image at 1200 hrs AEST ( Australian Eastern Standard Time), 28th March 2017

170328 1200EST Cyclone Debbie FNQsm.jpg


170328 Debbie storm track.jpg
it's a bit more than 1500km north of my location

Dave
 
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I hope @Math Amateur is fine. He told he would be traveling in Queensland ... I hope he meant Brisbane.
 
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ohhh and a weather radar that includes lightning data

170328 1200EST Cyclone Debbie FNQ radar.jpg
 
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OmCheeto said:
Is it safe to assume you missed the "900 mm" rainstorm?

fortunately ! ... we have had quite a bit of rain in my region recently, but nothing like what they have had up north because of the cyclone

... the cyclone has been gone for almost a week but there are still areas going under flood waters up north because it has taken time for all the water in the tributaries to make it down into the main river course and cause it to flood the main river through the city of Rockhampton is a one of those and by lunch time tomorrow it is expected to peak at approx. 9 metres above normal level

Dave
 
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davenn said:
fortunately ! ... we have had quite a bit of rain in my region recently, but nothing like what they have had up north because of the cyclone

... the cyclone has been gone for almost a week but there are still areas going under flood waters up north because it has taken time for all the water in the
tributaries to make it down into the main river course and cause it to flood
the main river through the city of Rockhampton is a one of those and by lunch time tomorrow it is expected to peak at approx. 9 metres above normal level

Dave
It's hard for me to imagine that much rain, in such a short period of time, as that's approximately our annual average here: 915 mm
 
OmCheeto said:
It's hard for me to imagine that much rain, in such a short period of time, as that's approximately our annual average here: 915 mm
It took some time for me to find a link, I was trying to get my head around how much rain fell compared to what happened near my location a few years ago... 19" in six hours :wideeyed:
http://blogs.wsj.com/numbers/how-much-rain-fell-in-marble-falls-texas-138/

The 900mm was spread out for 48 hours, but still "when you are flooded, you are flooded" :frown:
 

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