Verification of Atlantic ghost storm tracks of August-October 2021

I falsely detected (sub)tropical cyclogenesis in Atlantic (north of equator and west of Greenwich) 29 times in August thru October of 2021. Tracks were made of 18 systems.

In the calculations, crossover into East Pacific as a tropical cyclone is considered equal to dissipation.

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

Circle coloration scheme

Ghost storm L#28

This was Invest 93L.

August 1, 18Z:

August 7, 18Z:

Ghost storm L#29

This is pretty much like Grace... but not enough. Unidentifiable due to long lead time.

August 1, 18Z:

August 4, 12Z:

Ghost storm L#30

This was an area of interest monitored by NHC - it was a wave, which exited Africa just before the precursor of Grace.

August 3, 12Z:

August 4, 12Z:

System L#31

was not a ghost storm. Rather, it was Grace.

 

Ghost storm L#32

This is identifiable with a tropical wave, just west of 40W in the following synoptic chart.

August 11, 18Z:

Ghost storm L#33

This isn't identifiable with anything due to long lead time.

August 11, 18Z:

System L#34

was not a ghost storm. Rather, it was Ida.

 

System L#35

was not a ghost storm. Rather, it was Henri.

 

Ghost storm L#36

This is identifiable with absolutely nothing real.

August 15, 12Z:

Ghost storm L#37

I have no clue about what this is supposed to be.

August 21, 18Z:

Ghost storm L#38

This may be something... or maybe not.

August 21, 18Z:

System L#39

was not a ghost storm. Rather, it was Peter.

 

System L#40

was not a ghost storm. Rather, it was Larry.

 

System L#41

was not a ghost storm. Rather, it was (also) Peter (like L#39).

 

System L#42

was not a ghost storm. Rather, it was Nicholas.

 

System L#43

was not a ghost storm. Rather, it was Rose.

 

Ghost storm L#44

This is best identifiable with a tropical wave, in southwest Caribbean in the following synoptic chart.

September 10, 12Z:

System L#45

was not a ghost storm. Rather, it was (also) Peter (like L#39 and L#41).

 

System L#46

was not a ghost storm. Rather, it was Odette.

 

System L#47

was not a ghost storm. Rather, it was Sam.

 

Ghost storm L#48

This was an area of interest, just west of Victor.

September 16, 06Z:

September 17, 00Z:

September 27, 06Z:

System L#49

was not a ghost storm. Rather, it was Victor.

 

Ghost storm L#50

These tracks aren't identifiable at all.

September 22, 06Z:

September 27, 06Z:

Ghost storm L#51

These tracks could be identifiable with a tropical wave near Jamaica, or a trough across western Cuba, in the following synoptic chart. Who knows.

September 27, 06Z:

September 30, 12Z:

Ghost storm L#52

This is identifiable with a tropical wave, south of Hispaniola in the following synoptic chart.

September 30, 12Z:

October 4, 12Z:

Ghost storm L#53

This is best identifiable with a tropical wave, just east of Yucatan Peninsula in the following synoptic chart.

October 6, 12Z:

Ghost storm L#54

This was Invest 92L.

October 9, 18Z:

Ghost storm L#55

This can be connected to an end of a front, shown near Jamaica in the following synoptic chart.

October 15, 12Z:

October 21, 12Z:

Ghost storm L#56

This is identifiable with a tropical wave, near 30W in the following synoptic chart.

October 17, 12Z:

Ghost storm L#57

This isn't identifiable at all due to long lead time and inconsistent location and timing.

October 18, 18Z:

October 20, 12Z:

October 21, 12Z:

System L#58

was not a ghost storm. Rather, it was Wanda.