Forecast for Potential Tropical Cyclone Uncertain; Tropical Storm Watch in Effect for Portion of Florida East Coast

Figure 1. Latest forecast track/cone for PTC 9 from the National Hurricane Center.

Potential Tropical Cyclone Nine (PTC 9) is still lacking a well-defined center of circulation this morning.

8 AM EDT advisory info

As of 8 AM EDT, PTC 9 had maximum sustained winds of 30 mph, a pressure of 1009 millibars, and was moving northwest at 5 mph.

Track

PTC 9 should continue on a northwest trajectory over the next 24 – 48 hours. A turn to the north is then expected Sunday, with a bend back to the northeast/east early next week.

It is now uncertain if PTC 9 will move over the Florida peninsula.

The GFS, while no longer predicting a track into the Gulf, is maintaining a more west solution, showing a Florida landfall Saturday.

Figure 2. ECMWF showing PTC 9 east of Florida tomorrow. Image: Tropical Tidbits

Meanwhile, the ECMWF (see figure 2) and UKMET both keep the center offshore.

At this time, the National Hurricane Center (NHC) is splitting the difference, calling for PTC 9 to get very close to the east coast of Florida, but not make landfall (see figure 1).

Intensity

Wind shear has lowered over/around PTC 9, and should continue to do so over the next day or two, which should allow for PTC 9 to: become a tropical storm; strengthen.

However, how much PTC 9 is able to intensify is in question. If there is interaction with the Florida peninsula, PTC 9 will probably only manage to become a weak to moderate tropical storm.

Figure 3. Intensity guidance for PTC 9. Image: RAL/NCAR

Conversely, if PTC 9 remains offshore, intensification into a high-end tropical storm or hurricane would be a real possibility.

Impacts

Aside from possible heavy rain/gusty winds, it is hard to say with much specificity what impacts PTC 9 might have on Florida or the Southeast U.S. coast Given the uncertainty regarding track/intensity.

Advisory summary

  • A tropical storm watch is in effect from Jupiter Inlet, FL to the Flagler-Volusia County Line (see figure 1).
Caleb Carmichael
Caleb Carmichael

Caleb is the owner of Gulf Coast Storm Center. He has a bachelor's degree in geoscience with a concentration in broadcast and operational meteorology from Mississippi State University. Caleb has been providing weather updates, news, and analysis for the Gulf Coast since 2014.

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