Given the 6:35 am upgrade of Ian to 155 mph and the new graphics/forecast put out by the NHC, I decided to delete my post from about 20 minutes ago and replace it with this one to avoid confusion...
𝗜𝗮𝗻 𝘂𝗽 𝘁𝗼 𝟭𝟱𝟱 𝗺𝗽𝗵 𝗻𝗼𝘄 - 𝘁𝗵𝗶𝘀 𝗶𝘀 𝗮𝗻 𝗲𝘅𝘁𝗿𝗮𝗼𝗿𝗱𝗶𝗻𝗮𝗿𝗶𝗹𝘆 𝗱𝗮𝗻𝗴𝗲𝗿𝗼𝘂𝘀 𝘀𝘁𝗼𝗿𝗺.
Unfortunately for FL, Ian strengthened significantly after completing its eyewall replacement cycle overnight, going from 120 mph at 11 pm to 140 mph as of 5 am and then to 155 mph as of 6:35 am, as the NHC just put out an emergency update with that new information from a hurricane hunter flight. Pressure has dropped from 952 mbar to 942 mbar overnight and then dropped to 936 mbar as of the 6:35 am update, linked below.
https://www.nhc.noaa.gov/.../MIATCUAT4+shtml/280955.shtml?
This is now a very strong Cat 4 hurricane and almost a cat 5 hurricane (157 mph) and unlikely to weaken much in the next 12-15 hours before landfall, which is currently forecast to be in the Cape Haze/Boca Grande barrier island area and then inland, heading NNE, about 5-10 miles west of the Port Charlotte/Punta Gorda area (a minor shift of 5-10 miles NW of the 11 pm track, as Ian made a northward wobble overnight); this track would be about 20-25 miles NW of Captiva and Fort Myers and about 40-50 miles NW of Naples.
The storm surge forecast was also updated, given the upgraded strength of the storm, increasing storm surge forecasts by a few feet across the board from landfall and south of there with 12-16' of storm surge now predicted from Englewood to Bonita Beach and 7-11' from Bonita Beach to just south of Marco Island. This is very bad.
Note that hurricane force winds extend about 40 miles from the center of the storm and tropical storm force winds extend about 175 miles from the center of the storm. If this track verifies, Naples/Marco Island would be spared the worst of the winds, but not the worst of the storm surge, as per the NHC surge forecast. And to make matters worse, both the GFS and Euro models show the storm slowing down in its path across Florida, taking about 36 hours to go from landfall to just north of Daytona Beach, exacerbating the already torrential amount of rainfall forecast to fall (10-15" and locally up to 20" across a large swath of FL, including Tampa, Orlando and JAX). And there have already been dozens of small tornadoes with many more to come, especially along and on the right side of the storm's track.
Beyond that, Ian will emerge off the NE FL coast, likely still as a tropical storm with 50 mph winds and then head up the coast and back onto land somewhere around Savannah, GA on Friday afternoon, before dissipating to a remnant low by the time it reaches Spartanburg, SC late Saturday night and moisture from the system and a secondary low, which will move towards DelMarVa will likely bring heavy rain (2-4" possible) to DelMarVa and probably SNJ from late Saturday into Monday, with maybe 1-2" of rain for CNJ/NNJ/NYC area (could be much drier, could be wetter - high uncertainty on rainfall for our area).
https://www.nhc.noaa.gov/text/refresh/MIATCPAT4+shtml/280856.shtml?
FORECAST POSITIONS AND MAX WINDS
INIT 28/1100Z 25.9N 82.8W 135 KT 155 MPH
12H 28/1800Z 26.7N 82.4W 135 KT 155 MPH
24H 29/0600Z 27.7N 81.7W 80 KT 90 MPH...INLAND
36H 29/1800Z 28.7N 81.1W 50 KT 60 MPH...INLAND
48H 30/0600Z 29.8N 80.7W 45 KT 50 MPH...OVER WATER
60H 30/1800Z 31.6N 80.8W 45 KT 50 MPH
72H 01/0600Z 33.6N 81.4W 30 KT 35 MPH...INLAND
96H 02/0600Z 36.1N 82.1W 25 KT 30 MPH...POST-TROP/INLAND
120H 03/0600Z...DISSIPATED