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 is currently an undergraduate student at Mississippi State University majoring in geoscience with a concentration in broadcast and operational meteorology. While not yet a meteorologist, Caleb has been providing weather updates, news, and analysis for the Gulf Coast since 2014.

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