As Irma is Headed for the Southwest Florida Coast Winds Continue to Increase Over South Florida

September 10, 2017 10:00 am Advisory

Hurricane Irma:

  • Location: 25.0 N   81.5 W
  • About 80 mi SSE of Naples, FL
  • About 115 mi SSE of Ft. Meyers, FL
  • Maximum Sustained Winds: 130 mph
  • Present Movement: N or 130 degrees at 9 mph
  • Minimum Central Pressure: 933 mb / 27.55 inches of mercury

At 10:00 AM AST CDT, the center of Hurricane Irma was located near latitude 25.0 North, longitude 81.5 West. Irma is moving toward the north near 9 mph, and a north-northwestward motion with an increase in forward speed is expected later today, with that motion continuing through Monday.  On the forecast track, the eye of Irma should move over the Lower Florida Keys shortly, and then move near or over the west coast of the Florida Peninsula later today through tonight.  Irma should then move inland over northern Florida and southwestern Georgia Monday afternoon.

Maximum sustained winds are near 130 mph with higher gusts.  Irma is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale.  While weakening is forecast, Irma is expected to remain a powerful hurricane while it moves near or along the west coast of Florida.

Hurricane-force winds extend outward up to 80 miles from the center and tropical-storm-force winds extend outward up to 220 miles.  A 120 mph gust was recently reported at the National Key Deer Refuge in Big Pine Key.  A sustained wind of 62 mph with a gust of 94 mph was reported at the Federal Aviation Administration station at Miami International Airport.  A pressure of 940 mb / 27.75 inches of mercury was measured in the calm of the eye on Upper Sugarloaf Key.

The minimum central pressure reported by an Air Force Hurricane Hunter aircraft is 933 mb / 27.55 inches of mercury.

A Tropical Storm Warning is in effect for

  •  West of Indian Pass to the Okaloosa/Walton County Line
  •  North of Fernandina Beach to South Santee River

Hurricane Jose:

  • Location: 21.7 N  65.8 W
  • About 300 mi NW of the Northern Leeward Islands
  • About 340 mi E of Grand Turk Island
  • Maximum Sustained Winds: 130 mph
  • Present Movement: NW or 315 degrees at 16 mph
  • Minimum Central Pressure: 944 mb / 27.88 inches of mercury

At 10:00 pm CDT, the center of Hurricane Jose was located near latitude 21.7 North, longitude 65.8 West. Jose is moving toward the northwest near 16 mph. A northwest motion is expected to continue today. Jose will turn toward the north tonight and Monday, then toward the northeast Monday night, with a slower forward motion.

Maximum sustained winds are near 130 mph with higher gusts.  Jose is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale.  Gradual weakening is forecast during the next 48 hours.

Hurricane-force winds extend outward up to 40 miles from the center and tropical-storm-force winds extend outward up to 160 miles.

The estimated minimum central pressure is 944 mb / 27.88 inches of mercury.

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