MikeC
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Loc: Orlando, FL
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TD3 forms off the Southeast Coast on July 4th
Mon Jun 30 2025 07:57 AM
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5PM EDT Update 4 July 2025
The largely expected formation of Tropical Depression Three off the southeast coast this week has verified and NHC has started advisories on what is expected to become Tropical Storm Chantal by tomorrow afternoon and come ashore in South Carolina by Sunday morning. Given this, a Tropical Storm Watch has been issued from Edisto Beach, South Carolina to Little River Inlet, South Carolina.
Noteworthy that we have had three back-to-back Invests in a row, our first three, become Tropical Cyclones.
Ciel
1PM EDT Update 4 July 2025
The first of several scheduled recon missions into Invest 92L is currently en route to check out this area of low pressure off the southeast coast that already looks suspiciously like a verifiable tropical depression or storm. Interests along the southeast coast may want to begin paying closer attention as holiday weekend impacts are becoming likely.
Elsewhere, remnants of former Tropical Storm Barry, especially its moisture and moisture drawn up from the gulf from its circulation, has helped feed the development of a quasi "landphoon" over central Texas, with multiple flooding fatalities and missing people reported.
Ciel
1AM Update 4 July 2025
The much advertised surface trof now located off the southeast coast and east of the state of Florida has been Invest tagged, 92L, and recon is tentatively tasked with flying into it later today, July 4, if necessary.
This disturbance is most likely going to stay primarily a rain-maker and holiday nuisance regardless of classification status, but there is a chance of something more as it tracks ultimately north to northeast, off, along or into the southeast coast.
We do have an active Forecast Lounge on 92L where we have been going a little deeper into model runs: 3L Forecast Lounge
Ciel
Original Update
Barry has made landfall and dissipated, so now the attention moves to the 20% area that stretches from the northeast gulf over Florida into the Southeastern Atlantic.
The primary impact of this area, which is a front that likely will stall out over the same area, along with next to steering currents and high water temperatures gives a ripe area for something to possibly develop. However, this something may try to form over land, and if it does, it won't become anything tropical. This is the most likely scenario. It does mean potential for a lot of rain all week, especially toward the end of the week, mostly along the north west coast of Florida and the panhandle, but also reaching across the peninsula, into southern Georgia, and extreme southeastern North and South Carolina. Meaning if you are in those areas, the likelihood of a washout for independence day is on the high side.
As for development, a lot depends on where something decides to form, if at all. Because of how broad the area is models aren't very good at picking up exactly where something may form. Some favor it leaning toward the Gulf side, some off the southeastern coast, and others split the difference over land, which translates into no tropical development.
To reflect this, tthe image below represents locations various models have picked up on.
Image source Google Deepmind
Anything that shows up in the main line models means it's picking one of these and speculating on what happens. The spread means we'll have to watch it. Even if something forms, the likelihood of it becoming strong are slim, but if anything does it is imperative to keep watch to see how it drifts around in a low steering environment. In short, it needs to be watched all week in case it does consolidate, but most likely won't do much other than
rain.
Any Gulf area developing would be the most impactful, best case would be something offshore the southeast as it would likely wind up moving out to sea from there, unlikely to still be together if it got anywhere close to Bermuda.
As it stands now, the most likely outcome is no tropical development, with a lot of off/on rain.
Event Links
Long term radar recording of Florida for the entire length of the area
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Edited by cieldumort (Fri Jul 04 2025 04:56 PM)
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