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2023 - tracking the tropics


mcglups
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So NHC has declared the region some 200 miles E of central Florida as 'Potential Tropical Cyclone 16"

I mentioned that region several days ago but the question remained whether whatever comes of it would be purely tropical or some venture along the spectrum to a hybrid type genesis...etc.  Still out there. But, judging by the high res imagery and so forth, that looks as though it'd couple to the sea surface pretty readily - so I'm leaning tropical more so now...

Having said that/if so, it would change the picture a little up along the upper MA /SNE regions for this weekend.

I suspect what the global models are doing is peeling off a bit of warm IB and leaving behind what they "think" is hybrid phased weakening cyclone somewhere along or inland between the Del Marva and NYC to then meander thereafter through early next week.   However, *IF* a singular and [probably] more intense/intensifying actual  TC occurs, that probably invalidates a lot of that mean synopsis.  You could end up with anything from a "Bob", to west impactor, to a curve away with no impact... something else other than these erstwhile solutions.

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  • 2 weeks later...
Tropical Storm Philippe Discussion Number  42
NWS National Hurricane Center Miami FL       AL172023
500 PM AST Tue Oct 03 2023

Philippe has continued to lose organization for much of the day. 
Satellite images and aircraft fixes from this morning indicate that 
the circulation has become elongated, and the remaining deep 
convection has relatively little, if any, organization relative to 
the center, which is now located just north of the Virgin Islands. 
The initial intensity remains 40 kt based on the earlier SFMR data, 
but this could be generous given the overall loss of convective 
organization.

The current motion is northwestward, or 310/10 kt.  Over the next 
couple of days, Philippe is expected to turn northward between a 
strong mid-level high over the subtropical Atlantic and a developing 
cut-off low east of Florida, with its forward speed increasing in 
2-3 days when it becomes positioned between these two features.  The 
northward motion is expected to continue through the end of the 
forecast period as another deep-layer trough moves eastward across 
eastern North America.  The most notable change in this NHC forecast 
is that the guidance has again shifted westward, both due to an 
adjustment caused by Philippe's recent motion and a general westward 
trend in the track guidance.   The official forecast is close to the 
TVCA consensus aid, but it's not as far to the west as the latest 
ECMWF and HCCA solutions.  The risk continues to increase for some 
form of Philippe, likely as a post-tropical cyclone, to reach 
Atlantic Canada or eastern New England in about 5 days.

The deep-layer trough located near the east coast of the United 
States is likely to keep moderate-to-strong westerly or 
southwesterly shear over Philippe for much of the forecast period.  
As a result, little change in strength is forecast during the next 
2-3 days.  The GFS and ECMWF are now in good agreement that a 
separate baroclinic/non-tropical low will develop just to the west 
of Philippe in about 3 days.  These two systems are likely to 
interact, with Philippe becoming attached to the warm front, and 
therefore becoming extratropical, by day 4.  It's possible that 
Philippe could strengthen slightly due to this baroclinic 
interaction, and that scenario is shown in the official forecast.
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8 minutes ago, dryslot said:

I hope it was an over correction west and we see ticks back to the east, Would like to see this end up over NS, If it track over DE Maine it will be even less impactful then the last one.

Wouldn’t be surprised to see that happen. It’s post-tropical at any rate long before a landfall so there’s no novelty here. Just more rain.

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2 minutes ago, WxWatcher007 said:

Wouldn’t be surprised to see that happen. It’s post-tropical at any rate long before a landfall so there’s no novelty here. Just more rain.

I really don't see much in the way of wind that would make this more impactful, We can do without the rain though, Thats my reasoning to see it more to the east, It looks like we get dryslotted between the trough and Philippe as it stands with minimal amounts right now.

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1 minute ago, dryslot said:

I really don't see much in the way of wind that would make this more impactful, We can do without the rain though, Thats my reasoning to see it more to the east, It looks like we get dryslotted between the trough and Philippe as it stands with minimal amounts right now.

If Philippe can somehow become a brief hurricane it’d make my peak forecast perfect with two weeks to go, but I doubt it’s organized enough to get there. 

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Luckily there is not an intense hurricane right now southwest of Phillippe's position.  The strong trough approaching would yank something northbound quick if placements were just right.  This is why New England usually gets it's strongest hurricanes later in the season when fall troughs arrive

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3 hours ago, wxeyeNH said:

Luckily there is not an intense hurricane right now southwest of Phillippe's position.  The strong trough approaching would yank something northbound quick if placements were just right.  This is why New England usually gets it's strongest hurricanes later in the season when fall troughs arrive

I Think all the hurricanes that land falled New England in 20’th century  were late August into September According to the wiki page 

strongest Carol, Donna, 38 and 44 , Bob Did 

couple tropical storms had landfalls Earlier and later 

 

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