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2025 Global Tropical Cyclone Season Discussion

The Western Pacific is now at 118 days without the first TC. We appear likely to enter the first few days of May without the first TC, but Invest 99W does appear to have decent support to form so I don't think this streak will last much longer.
 
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PAGASA is now noting the possibility of TC development in their area of responsiblity within the next week. The first Philippine name is Auring and the next international name is Wutip.
 
It appears that 99W is not the disturbance that will become the possible Western Pacific storm. The JTWC has designated Invest 90W to the east of Invest 99W. 90W is likely the storm signal we are looking for and watching.
Screenshot 2025-04-29 10.10.07 AM.png
 
First GEFS model guidance on 90W:
Screenshot 2025-04-29 10.11.34 AM.png
 
Say hi Louisana! Got a tiny guy from last night's 18Z GFS run:
Screenshot 2025-04-30 11.18.21 AM.png
 
Say hi Louisana! Got a tiny guy from last night's 18Z GFS run:
View attachment 40734
That does make sense with the pattern going forward so don't dismiss the GFS. While it may not be that early around May 12th, we should get early season development around mid/late May out of the Western Caribbean.
 
That does make sense with the pattern going forward so don't dismiss the GFS. While it may not be that early around May 12th, we should get early season development around mid/late May out of the Western Caribbean.
I've been looking at Pivotal Weather and the GEFS and EFS models on here. They are all suggesting somewhere from around May 16th to the end of May is the timeframe to watch. The 00Z runs of the GEFS seem to like May 19th as a good day to start watching too.
 
M
That does make sense with the pattern going forward so don't dismiss the GFS. While it may not be that early around May 12th, we should get early season development around mid/late May out of the Western Caribbean.
Mid to Late May Caribbean development is more like the pre-2022 Atlantic. 2023 and 2024 were just interesting years without any May storms.

2023 and 2024 had this:
  • Record warm SSTs
  • Mid to late June MDR tropical wave development into TCs
  • No preseason development from a CAG or something else in the Caribbean.
I think the reach that Bret and Cindy in 2023, and Beryl in 2024 happened was due to those record warm SSTs. Especially with Hurricane Beryl in 2024. SSTs were so warm in the area Beryl formed.
 
That does make sense with the pattern going forward so don't dismiss the GFS. While it may not be that early around May 12th, we should get early season development around mid/late May out of the Western Caribbean.
Do you follow the Lezak Reoccuring Cycle (LRC)?
 
Do you follow the Lezak Reoccuring Cycle (LRC)?
I do but I'm not a paid subscriber. I do get their emails. It's interesting and from the bits that I've seen, it does well.
 
The LRC definitely suggests that we are approaching the first timeframe to watch for possible development too.

This year to me seems to have more uncertainty than others due to the neutral conditions in place down in the ENSO regions.
 
I do but I'm not a paid subscriber. I do get their emails. It's interesting and from the bits that I've seen, it does well.
What do you think about this hurricane season, since we are likely just passed the spring barrier?
 
I do but I'm not a paid subscriber. I do get their emails. It's interesting and from the bits that I've seen, it does well.
Brb, gonna get lunch real quick. I will reply when I can. Should be about 5-10 minutes from now.
 
What do you think about this hurricane season, since we are likely just passed the spring barrier?
To me, there's one year in particular that sticks out. 2018. That was a ENSO Neutral year. Overall, tornado activity was below normal though with only 1145 tornadoes that year (average is 1200). But the Atlantic hurricane season ended up above normal. One key thing is that I have found where the Gulf Coast has more tropical impacts/landfalls during ENSO Neutral years than Nino or Nina.
 
To me, there's one year in particular that sticks out. 2018. That was a ENSO Neutral year. Overall, tornado activity was below normal though with only 1145 tornadoes that year (average is 1200). But the Atlantic hurricane season ended up above normal. One key thing is that I have found where the Gulf Coast has more tropical impacts/landfalls during ENSO Neutral years than Nino or Nina.
2024 was gulf heavy. To have second gulf heavy year in a row would not be good.
 
It is April 30th, which is the last day of the Southern Hemisphere tropical cyclone season. The season has been well above average (NOAA says 18 storms is the average of how many storm form each season) 31 tropical cyclones have formed, of which 16 have reached hurricane-force and 11 reached major cyclone status.


Strongest to weakest in wind speed:

29S Errol (160 mph)
04S Chido (155 mph)

13S Vince (155 mph)
17S Zelia (150 mph)
27S Courtney (150 mph)
18P Alfred (130 mph)
02S Bheki (130 mph)

10S Sean (130 mph)
22S Garance (120 mph)

07S Dikeledi (115 mph)
20S Bianca (115 mph)
14S Taliah (105 mph)
19P Rae (105 mph)

25S Jude (90 mph)

23S Honde (80 mph)
21P Seru (75 mph)
01S Ancha (65 mph)

06P Six (60 mph)
03S Robyn (60 mph)
30P Tam (60 mph)
24S Ivone (60 mph)
28S Dianne (50 mph)
12S Elvis (50 mph)
15P Fifteen (50 mph)
11S Faida (50 mph)
26S Twenty-Six (50 mph)
08P Pita (50 mph)
16P Sixteen (45 mph)
05S Five (40 mph)

09S Nine (35 mph?)



 
Hey @Atlantic give me a few days and I'll email you some spreadsheets I've done that show some very eye opening tropical stats.
 
Hey @Atlantic give me a few days and I'll email you some spreadsheets I've done that show some very eye opening tropical stats.
Can you make it a google doc or PDF or something? I lost track of the preivous thing you sent me and I couldn't access it anyway.
 
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