tiger_deF

It’s phantom season baby!

For pre-season development I have my eyes on a tropical wave which for several runs has been shown for several runs to move off of South America into the Caribbean in around 7-10 days. It will potentially move NE to the open Atlantic, as shown by this 018z GFS run, where it might be able to align along the shear vector at some point and develop. Waters are certainly warm enough SAL and high wind shear from zonal continental flow is currently dominating the basin (typical in Mid-May), so the tropical Atlantic is going to be shut down asides from a potential sneaky system for some time. However, MJO is moving into the basin in late May, and as the ICTZ continues to tick northwards and pockets of lower shear start to pop up, things will start looking more favorable for some early-season development, and one of the most hyped seasons in years will truly begin.

MDR is absolutely toasty right now, hard to imagine a more favorable look. I can't remember ever seeing this level of warm anomalies across the tropical Atlantic, and as the SATL and El Nino regions are cooling off, it continues to warm. OHC anomalies in the MDR are a month ahead of 2023 and 3 months ahead of the 2013-2022 average.

This goes against my preferred narrative, therefore the UKMET is as garbage as they come and can be completely ignored.

If we get both a Lee landfall/close brush and Nigel becomes a threat, would this be the most active tropical period for NE in recent history?

Now this is an overreaction if I've ever seen one. Lee is in the latter stages of an ERC, and though the inner eyewall is fighting back it will be toast in the long run. I expect that by tomorrow Lee will clear a big, beautiful eye.

GOES trying to will a hit into existence

Lee is looking better by the frame; this is the clearest the eye has been in days, and intense convection has fully surrounded the center of the system. I think he might make a run for his earlier peak if trends continue.

Even if Lee whiffs we have a whole other week of potential tracking for soon-to-be Nigel.

GFS bringing round 2

Sheared slop. NEXT!

What a beast. Looking better by the frame.

Even if the winds aren't more than a typical nor'easter, this will be carrying a significantly larger fetch of water, which is often the larger threat with hurricanes anyway.

It's cumming for us

Aside from a thick CDO, you can't really ask for a better tropical depression satellite presentation. Robust dual outflow channels, a defined low level circulation, and visible banding. Future Lee is primed to take off. Not only is this going to be a powerful hurricane, but it is also going to be a large one.

If we could just get the system moving a little faster.. would-be Lee is absolutely crawling past day 7. Either way, we track

Looks like Idalia is forming a potent and relatively tiny core. Will be interesting to see if it will collapse like Delta's or give way to a period of rapid intensification. All interests on the Florida gulf coast and coastal Southeastern states should be watching very closely.

So close but yet so far

12z ICON and GFS are shifting way West, I wouldn't write this one off just yet. Frankly I think there's a scenario where Franklin misses us to the South and hits somewhere else on the EC, depending on how ridging builds in.

GFS is insistent that the current LLC will die off and another will form farther Northeast (which is entirely possible due to the high levels of shear). If that doesn't pan out, I'd expect the track will be adjusted to the west somewhat.

Very strong convective burst occurring slightly to the East of the low level center. Definitely looks to be strengthening quicker than forecast (most models didn't bring 90L down to 1001 mb until right before landfall/in the open Atlantic). Will be interesting to see how this affects the track.

Figured I'd make a thread for this disturbance. 90L has come on the scene rather quickly - As a disturbance from the western edge of the monsoon trough, models only started picking up on potential development of this system a few days ago. 90L has appeared to be steadily organizing over the past day, with popcorning CBs and early indications of banding patterns. Model-wise, a powerful trough is expected to pick up the developing system through Hispaniola and potentially posing a threat to Bermuda down the line. However, as indicated by the GEFS spaghetti plot, there are lots of options still on the table, and a great deal of uncertainty as to the future track.

Looks like I was wrong about August at least! The basin looks to be getting quite active over the next couple of weeks. Two areas that I think present distinct threats to land: 1. The westernmost portion of the decaying monsoon trough. Model support has quickly grown over the past day, and there is currently a massive convective burst taking place over the center of the disturbance, shown below. Models take this system right over the antilles/PR. 2. The wave currently coming off of Africa. Model support is also growing, with the 00z GFS developing the system in a few days. The Bermuda high appears much more stout than it has been, and the GFS takes the system across the entire Atlantic, recurving extremely close to the east coast. With 98L acting as a sacrificial lamb to SAL, the local environment looks very conductive for development.

The wave just moving off of Africa is picking up some interesting model support.

Worth looking at the vorticity as well. 99L is well on its way.