Put Cloudbreak on your portfolio.

Leave your email and we’ll reach out within one business day.

Prefer to talk? Call 940-391-3558.

Unnamed hurricane of 1947 (AL041947)

Unnamed hurricane of 1947 (AL041947) was a Category 4 hurricane at its peak, with 144 mph winds and a lowest pressure of 938 mb, per NOAA's National Hurricane Center. Modeled winds reached tropical-storm force (39 mph) at 16 of the cities we track; the strongest was Miami, FL, with a modeled peak gust of 130 mph.

Peak strength144 mph winds (1-minute)
Category 4
Cities with tropical-storm-force windsModeled, of the cities we track
16
LandfallsFirst September 16, 1947
3
Lowest pressure
938 mb

Track, wind field and cities

Select a piece of the track or a city for details.

  • Depression or weaker
  • Tropical storm
  • Hurricane, Category 1 or 2
  • Major hurricane, Category 3 to 5
  • Landfall
  • City (larger ring, stronger modeled gust)
  • Modeled wind field, 39 to 111 mph sustained (darker, stronger; orange 111 mph+)
Source: NOAA/NWS National Hurricane Center best track (HURDAT2). City winds and the wind field are modeled.

The shaded areas are where our model puts Unnamed hurricane of 1947 (AL041947)’s sustained winds over open land at 39 mph or more (tropical-storm force), 58, 74 (hurricane force) and 111 mph (major hurricane force) at some point along its track. Modeled, not measured. How we model hurricane winds

Landfalls

  1. September 16, 1947, Category 3 at 121 mph, in the Bahamas
  2. September 17, 1947, Category 4 at 132 mph, about 23 miles from Miami, FL
  3. September 19, 1947, Category 2 at 109 mph, about 41 miles from New Orleans, LA

Modeled winds at cities (16)

Estimated peak winds for open, flat ground at each city’s center. Not measurements. How we model hurricane winds

CityPeak gustSustainedClosest passPeak
Miami, FL130 mph105 mph23 milesSep 17, 1947, 12:15 PM GMT-4
New Orleans, LA110 mph90 mph17 milesSep 19, 1947, 9:45 AM GMT-5
Slidell, LA107 mph87 mph36 milesSep 19, 1947, 10:15 AM GMT-5
Cape Coral, FL106 mph86 mph15 milesSep 17, 1947, 11:00 PM GMT-4
Naples, FL101 mph82 mph13 milesSep 17, 1947, 8:30 PM GMT-4
North Port, FL96 mph78 mph39 milesSep 18, 1947, 2:30 AM GMT-4
Gulfport, MS91 mph74 mph62 milesSep 19, 1947, 9:00 AM GMT-5
Baton Rouge, LA89 mph72 mph9 milesSep 19, 1947, 1:15 PM GMT-5
Port St. Lucie, FL74 mph60 mph81 milesSep 17, 1947, 2:00 PM GMT-4
Lafayette, LA65 mph52 mph31 milesSep 19, 1947, 3:30 PM GMT-5
Mobile, AL64 mph52 mph103 milesSep 19, 1947, 6:45 AM GMT-5
Daphne, AL61 mph50 mph108 milesSep 19, 1947, 6:45 AM GMT-5
Show all 16

Best track (73 positions)

TimeStatusWindPressurePosition
Sep 4, 06:00 UTCTropical depression35 mph14.5°N, 20.1°W
Sep 4, 12:00 UTCTropical depression35 mph14.3°N, 21.5°W
Sep 4, 18:00 UTCTropical depression35 mph14.2°N, 22.8°W
Sep 5, 00:00 UTCTropical storm40 mph14.1°N, 24.0°W
Sep 5, 06:00 UTCTropical storm40 mph14.0°N, 25.0°W
Sep 5, 12:00 UTCTropical storm46 mph14.0°N, 26.1°W
Sep 5, 18:00 UTCTropical storm46 mph14.0°N, 27.1°W
Sep 6, 00:00 UTCTropical storm52 mph14.1°N, 28.2°W
Sep 6, 06:00 UTCTropical storm52 mph14.2°N, 29.3°W
Sep 6, 12:00 UTCTropical storm58 mph14.3°N, 30.4°W
Sep 6, 18:00 UTCTropical storm58 mph14.3°N, 31.5°W
Sep 7, 00:00 UTCTropical storm58 mph14.2°N, 32.6°W
Show all 73