Verification of Atlantic ghost storm tracks of November-December 2021

I falsely detected (sub)tropical cyclogenesis in Atlantic (north of equator and west of Greenwich) 9 times in November thru December of 2021. Tracks were made of 3 systems.

At the lead time of 1 day (24 hours), there were 3 false detections.
At the lead time of 2 days (48 hours), there were 2 false detections.
At the lead time of 3 days (72 hours), there were 2 false detections.
At the lead time of 4 days (96 hours), there was 1 false detection.
At the lead time of 5 days (120 hours), there were 2 false detections.
At the lead time of 6 days (144 hours), there were 3 false detections.
At the lead time of 7 days (168 hours), there were 2 false detections.
At the lead time of 8 days (192 hours), there were 0 false detections.
At the lead time of 9 days (216 hours), there were 0 false detections.
At the lead time of 10 days (240 hours), there were 0 false detections.
At the lead time of 11 days (264 hours), there were 0 false detections.
At the lead time of 12 days (288 hours), there were 0 false detections.
At the lead time of 13 days (312 hours), there were 0 false detections.
At the lead time of 14 days (336 hours), there were 0 false detections.
At the lead time of 15 days (360 hours), there were 0 false detections.
At the lead time of 16 days (384 hours), there were 0 false detections.
At the lead time of 17 days (408 hours), there were 0 false detections.
At the lead time of 18 days (432 hours), there were 0 false detections.
At the lead time of 19 days (456 hours), there were 0 false detections.
At the lead time of 20 days (480 hours), there were 0 false detections.
At the lead time of 21 days (504 hours), there were 0 false detections.

Circle coloration scheme



Ghost storm L#59

This was an extratropical low, shown with 999 mbar pressure near the Azores in the following synoptic chart.


November 15, 18Z:


November 17, 18Z:


November 19, 12Z:


November 21, 18Z:


November 22, 18Z:


November 23, 12Z:

Ghost storm L#60

This is identifiable with a low, shown with 1012 mbar pressure west of Canary Islands in the following synoptic chart.


November 19, 12Z:


November 23, 12Z:

Ghost storm L#61

This is identifiable with a huge mess of several low pressure centers, shown east of the Azores in the following synoptic chart.


December 13, 12Z:


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