Australian east coast lows (known locally as east coast lows and sometimes as east coast cyclones) are extratropical cyclones. The most intense of these systems have many of the characteristics of subtropical cyclones. They develop between 25˚ south and 40˚ south and within 5˚ of the Australian coastline, typically during the winter months, but may occur in autumn and spring as well. Each year there are about ten "significant impact" maritime lows.
Prior to the introduction of satellite imagery in the early 1960s, many east coast lows were classified as tropical cyclones. These storms which mostly affect the south east coast should not be confused with Australian region tropical cyclones, which typically affect the northern half of the continent.
On Thursday, May 23, 1974, a low-pressure system developed about 500km southeast of Sydney that led to increasing wave heights from the southeast as the system deepened.
Then, about midnight on Saturday, May 25, an intense low-pressure cell developed offshore south of Sydney and moved up the coast.
The peak of the storm passed through Sydney about 1am on Sunday, May 26, and reached Taree five hours later, after which it weakened and moved back out to sea.
At the height of the storm, winds gusted at up to 165km/h and the significant wave height (the average height of the highest one-third of the waves) off Sydney reached about 9m.
This Earth Cache is located near Mahon Pool, Maroubra.
To complete this Earth Cache, you will be required to visit 2 locations that are very close to each other. The Earth Cache can be completed at any time, however, as you will be close to the ocean please take care when visiting both locations. If there are large waves or a heavy swell you may want to try again another day.
You must attend the Earth Cache locations and message me the answers to the two questions to claim a find. Any logs without these will be deleted, no exceptions!!
There is no need to wait for a confirmation message to log this earth cache. I read all messages to verify the correct information was sent and will contact you if there are any problems with your answers. If the task is not completed within a timely manner of logging your cache online, your log will be deleted.
At WP1 (the posted coordinates) there is a large rock that wasn’t in this position before the storm referred to above.
- Tell me how the rock most likely got here. Close inspection of the rock will assist you with your answer.
At WP2 (stage 2) there is another structure, and unlike the rock above, it was here well before the storm referred to above.
- Tell me briefly how this structure was formed.
CONGRATULATIONS TO JordsAU ON FTF.