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Official 2023 Atlantic Hurricane Thread - Nigel (2 Viewers)

Was just coming to post this one too. Will almost certainly be Hurricane Lee (Leigh?) by Thursday. Almost all models and spaghetti paths showing no US landfall but an offshore bend towards Novia Scotia where a trough coming from US land side would effective "swat" Lee back out to sea. If that trough were to miss the meeting, Lee could make a landfall. There was one of the early path models showing south Florida landfall.
 
Atlantic tracks more than 7 days out are pretty useless. There's not enough to really nail down the steering flows coming into the atlantic that far out. It won't have any trouble turning into a monster in the next 5 days though.
 
13 is in a sweet spot of trouble. The fronts that guide these things around need to align to keep it away.
 
TD13 is the second TD in history that was given an advisory wind speed of a Cat4 hurricane in the initial advisory. The only other time was a Pacific cyclone in 2009 named Rick.
 
Anyone wonder what a Cat 5 hurricane hitting Tampa Bay would look like? This is scary.

Project Phoenix:


Phoenix 2.0:

 
Lee is going to be a monster but should lose some punch before threatening land.

NHC forecast of 145mph is probably going to be low.
 
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I'm not a pro (he is) but I agree. I don't think it's going to turn north as quickly as the long range models are saying.

But wxrisk doesn't agree so there's that. :ponder:

One of the things about climate change that was predicted is that stronger storms tend to take themselves poleward more, and eventually something major would hit between DC and Boston causing untold damage.
 
I'm not a pro (he is) but I agree. I don't think it's going to turn north as quickly as the long range models are saying.

But wxrisk doesn't agree so there's that. :ponder:

One of the things about climate change that was predicted is that stronger storms tend to take themselves poleward more, and eventually something major would hit between DC and Boston causing untold damage.
Yeah, it seems somewhat likely that this one will "impact" New England and/or Nova Scotia. Trying to choose my words carefully there. Way too early to tell though of course.

NHC bumped the wind speed forecast up to 150mph and it's still likely low.
 
I'm not a pro (he is) but I agree. I don't think it's going to turn north as quickly as the long range models are saying.

But wxrisk doesn't agree so there's that. :ponder:

One of the things about climate change that was predicted is that stronger storms tend to take themselves poleward more, and eventually something major would hit between DC and Boston causing untold damage.
Somewhat touches on that: https://twitter.com/EricBlake12/status/1699368019657453611
 
I'm not a pro (he is) but I agree. I don't think it's going to turn north as quickly as the long range models are saying.

But wxrisk doesn't agree so there's that. :ponder:

One of the things about climate change that was predicted is that stronger storms tend to take themselves poleward more, and eventually something major would hit between DC and Boston causing untold damage.
Somewhat touches on that: https://twitter.com/EricBlake12/status/1699368019657453611
Well, hotter water for sure but stronger storms themselves tend to just go poleward as they "feel" Eastern steering more for their size.

End result is a big storm that might otherwise go for Miami as a 4-5, instead turns towards times square as a 2-3 where they are much less prepared.
 
I'm not a pro (he is) but I agree. I don't think it's going to turn north as quickly as the long range models are saying.

But wxrisk doesn't agree so there's that. :ponder:

One of the things about climate change that was predicted is that stronger storms tend to take themselves poleward more, and eventually something major would hit between DC and Boston causing untold damage.
Somewhat touches on that: https://twitter.com/EricBlake12/status/1699368019657453611
Well, hotter water for sure but stronger storms themselves tend to just go poleward as they "feel" Eastern steering more for their size.

End result is a big storm that might otherwise go for Miami as a 4-5, instead turns towards times square as a 2-3 where they are much less prepared.
Warmer waters, rapid intensification, stronger storms, and on and on.
 
The trend is not our friend. :oldunsure:

If the "split the goalpost" scenario is going to hold up the HAFS better start showing something good soon.
 
Couple of recon flights scheduled today; should provide some good data for the models.
 
NHC bumped the intensity forecast up to 160mph.
Yes, but that's 160 scaring fish. The 5-Day already has it receding a bit to 140 and still not threatening land. Possibility of blowing itself out over open water, which is definitely for the best.

FORECAST POSITIONS AND MAX WINDS

INIT 07/1500Z 16.4N 50.0W 90 KT 105 MPH
12H 08/0000Z 17.1N 51.7W 115 KT 130 MPH
24H 08/1200Z 18.2N 54.0W 130 KT 150 MPH
36H 09/0000Z 19.2N 56.1W 140 KT 160 MPH
48H 09/1200Z 20.1N 58.1W 140 KT 160 MPH
60H 10/0000Z 20.9N 59.8W 135 KT 155 MPH
72H 10/1200Z 21.5N 61.2W 135 KT 155 MPH
96H 11/1200Z 22.6N 63.7W 125 KT 145 MPH
120H 12/1200Z 23.6N 66.0W 120 KT 140 MPH
 
NHC bumped the intensity forecast up to 160mph.
Yes, but that's 160 scaring fish. The 5-Day already has it receding a bit to 140 and still not threatening land. Possibility of blowing itself out over open water, which is definitely for the best.

FORECAST POSITIONS AND MAX WINDS

INIT 07/1500Z 16.4N 50.0W 90 KT 105 MPH
12H 08/0000Z 17.1N 51.7W 115 KT 130 MPH
24H 08/1200Z 18.2N 54.0W 130 KT 150 MPH
36H 09/0000Z 19.2N 56.1W 140 KT 160 MPH
48H 09/1200Z 20.1N 58.1W 140 KT 160 MPH
60H 10/0000Z 20.9N 59.8W 135 KT 155 MPH
72H 10/1200Z 21.5N 61.2W 135 KT 155 MPH
96H 11/1200Z 22.6N 63.7W 125 KT 145 MPH
120H 12/1200Z 23.6N 66.0W 120 KT 140 MPH
Right, storms don't stay at cat 5 long typically. If it threatens land it will (should) be at much less intensity. Going to hit some cooler water churned up by the previous 2 storms, if it doesn't stall and do it itself.

The point of pointing out the 160mph is how quickly it's getting there. From an invest to TS to major major (not just major) hurricane in barely 2 days is crazy.
 
Both of the HAFS models have Lee reaching 160+ knots within 24 hours. :shock: Then intensity goes up and down a bit from there, never back to that strong though.
 
Both of the HAFS models have Lee reaching 160+ knots within 24 hours. :shock: Then intensity goes up and down a bit from there, never back to that strong though.

Why won't it get any stronger with as much warm water as it's going over? Is there a scientific anomaly happening that won't allow it to get any stronger than that? Does it just tear itself up? Or could we see a 200 mph hurricane at some point?
 
Both of the HAFS models have Lee reaching 160+ knots within 24 hours. :shock: Then intensity goes up and down a bit from there, never back to that strong though.

Why won't it get any stronger with as much warm water as it's going over? Is there a scientific anomaly happening that won't allow it to get any stronger than that? Does it just tear itself up? Or could we see a 200 mph hurricane at some point?
Hurricane north of 25 degrees sees quite a bit of mid level shear which mitigates a lot of other formation needs.
 
Both of the HAFS models have Lee reaching 160+ knots within 24 hours. :shock: Then intensity goes up and down a bit from there, never back to that strong though.

Why won't it get any stronger with as much warm water as it's going over? Is there a scientific anomaly happening that won't allow it to get any stronger than that? Does it just tear itself up? Or could we see a 200 mph hurricane at some point?
Besides what culdeus said, there's some cooler water from previous storms, eyewall replacements, etc.
 
Both of the HAFS models have Lee reaching 160+ knots within 24 hours. :shock: Then intensity goes up and down a bit from there, never back to that strong though.

Why won't it get any stronger with as much warm water as it's going over? Is there a scientific anomaly happening that won't allow it to get any stronger than that? Does it just tear itself up? Or could we see a 200 mph hurricane at some point?
Besides what culdeus said, there's some cooler water from previous storms, eyewall replacements, etc.
So technically it's possible to get up to 200 mph if there were no physical limitations like what will be impacting Lee?

Yeah, that would suck if that's the case.
 
Both of the HAFS models have Lee reaching 160+ knots within 24 hours. :shock: Then intensity goes up and down a bit from there, never back to that strong though.

Why won't it get any stronger with as much warm water as it's going over? Is there a scientific anomaly happening that won't allow it to get any stronger than that? Does it just tear itself up? Or could we see a 200 mph hurricane at some point?
Besides what culdeus said, there's some cooler water from previous storms, eyewall replacements, etc.
So technically it's possible to get up to 200 mph if there were no physical limitations like what will be impacting Lee?

Yeah, that would suck if that's the case.
HAFS-B actually has it reaching about 200mph tomorrow but I doubt that will happen. Even if it does it's out in open water where it can't really hurt anything.
 
I think I'd be a lot more worried if I were on Long Island than in the Carolinas at this point.

IMO the takeaway from this thing is that climate change has produced conditions where going from not having a threat at all to a Cat 5 in just a few days will become more common.

If that happened with a landfalling hurricane it would add new problems with preparations and evacuations.
 
I think I'd be a lot more worried if I were on Long Island than in the Carolinas at this point.
Oh for sure, and if the models and experts have it right even LI and up into NE don't have much worry outside rough surf. Way too early to tell though. OBX is likely okay but not certain. There has been a slight westward trend...
 
Nhc has said in nearly every advisory they are behind the models.
Not sure what you mean. That tweet (yeah it's a tweet, not an X) is pointing out that from 12z today +36 hours NHC forecast has it at Cat 5, which is unprecedented.
The nhc has text with each advisory and they have had comments that they felt the numbers they were publishing would be low.
 

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