2017-18 Antarctic cyclone season

SPECIAL ANNOUNCEMENT: THE CDMC HAS MOVED THE OFFICIAL START OF THE ANTARCTIC CYCLONE SEASON TO OCTOBER 15. The 2017-18 Antarctic cyclone season is a current event in the southern basin. The season began on September 18, 2017 with the formation of Polar Depression One and will run through February 15, 2018.

Seasonal Summary
The 2017-18 Antarctic cyclone season will officially begin on October 15, 2017, and will end on February 15, 2018. This is the third Arctic cyclone season to be monitored by the Collin D Meteorological Center.

The current Accumulated Cyclone Energy (ACE) for the 2017-18 Antarctic cyclone season is 12.325 units.

Polar Cyclone Ashwin
The CDMC started to monitor a potential area of development on September 12 for potential polar system genesis. On September 16, the area of low pressure the CDMC expected to form finally formed and started to get more organized. On September 17, the CDMC issued its first advisory on Polar Depression One, the first system of the 2017-18 Antarctic cyclone season. Initially, the CDMC expected a weak polar cyclone to form due to the abnormally high water temps for September, but the system refused to strengthen and the CDMC didn't expect for a Polar cyclone to form. However, once the system hit warmer waters and lower shear it began to strengthen and it became Polar Storm Ashwin the next day. Ashwin continued to strengthen and became a Weak Polar Cyclone shortly after becoming a polar storm due to recon finding 75+ mph sustained winds. Ashwin wouldn't stop there and continue to strengthen reaching a peak of 105 mph. Shortly after this Ashwin moved into cooler waters and started to rapidly weaken back into a polar storm and on September 22 the CDMC issued their last advisory on Ashwin.

Season Effects
This is a table of all the cyclones that have formed in the 2017-18 Antarctic cyclone season. Damage figures are denoted in millions of United States Dollars (USD). Death and damage totals also include totals when the cyclone was post-polar, a low, or a polar wave.