page_title: Timeline of the 1980 Atlantic hurricane season
section_title: August
hierarchical_section_title: Timeline of the 1980 Atlantic hurricane season / Timeline / August
caption_attribution_description: English: Hurricane Allen from NOAA-6. Inventory ID: NSS.GHRR.NA.D80220.S1339.E1533.B0578485
context_page_description: The 1980 Atlantic hurricane season was an event in the annual tropical cyclone season in the north Atlantic Ocean. It was an average Atlantic hurricane season in which eleven named storms formed. The season officially began on June 1, 1980 and ended November 30, 1980. These dates, adopted by convention, historically describe the period in each year when most Atlantic systems form. Even so, Tropical Depression One did not form until July 17. The season's final storm, Hurricane Karl, dissipated on November 27.
  The season produced fourteen tropical depressions, of which 12 intensified into tropical storms, four became hurricanes and two became major hurricanes. The only significant storm during the season was Hurricane Allen, a long-lived Cape Verde-type hurricane that became one of the strongest hurricanes recorded in the Atlantic Ocean, as well as the earliest Category 5 hurricane on the Saffir–Simpson Hurricane Wind Scale ever recorded, a record that stood until Hurricane Emily during the 2005 season. Allen reached its peak intensity with maximum sustained winds of 190 mph with a minimum barometric pressure of 899 mbar.
context_section_description: August 1
  0000 UTC (8 p.m. AST July 31) – Tropical Depression Two forms in the Eastern Atlantic.
  August 2
  0000 UTC (8 p.m. AST August 1) – Tropical Depression Two strengthens into Tropical Storm Allen roughly halfway between the Lesser Antilles and Africa.
  August 3
  0000 UTC (8 p.m. AST August 2) – Tropical Storm Allen strengthens to a Category 1 hurricane approximately 650 miles (1,050 km) east of St. Lucia.
  1800 UTC (2 p.m. AST) – Hurricane Allen strengthens to a Category 2 hurricane.
  August 4
  0000 UTC (8 p.m. AST August 3) – Hurricane Allen strengthens into a Category 3 hurricane.
  0600 UTC (2 a.m. AST) – Hurricane Allen strengthens to a Category 4 hurricane to the north of St. Vincent.
  August 5
  0000 UTC (8 p.m. AST August 4) – Hurricane Allen strengthens into a Category 5 hurricane.
  August 6
  0600 UTC (2 a.m. AST) – Hurricane Allen weakens to a Category 4 hurricane.
  August 7
  0600 UTC (2 a.m. AST) – Hurricane Allen re-strengthens to a Category 5 hurricane.
  1800 UTC (2 p.m. AST) – Hurricane Allen reaches a peak intensity of 190 miles per hour (310 kilometres per hour) and a minimum barometric pressure of 899 mbar (hPa; 26.55 inHg).
  August 8
  0600 UTC (2 a.m. AST) – Hurricane Allen weakens to a Category 4 hurricane.
  August 9
  0000 UTC (8 p.m. AST August 8) – Hurricane Allen re-strengthens to a Category 5 hurricane.
  1800 UTC (2 p.m. AST) – Hurricane Allen weakens to a Category 4 hurricane.
  August 10
  0000 UTC (8 p.m. AST August 9) – Hurricane Allen weakens to a Category 3 hurricane.
  1200 UTC (8 a.m. AST) – Hurricane Allen weakens to a Category 2 hurricane.
  1800 UTC (2 p.m. AST) – Hurricane Allen weakens to a Category 1 hurricane.
  August 11
  0000 UTC (8 p.m. AST August 10) – Hurricane Allen weakens to a tropical storm.
  1200 UTC (8 a.m. AST) – Tropical Storm Allen weakens to a tropical depression.
  1800 UTC (2 p.m. AST) – Tropical Depression Allen dissipates.
  August 13
  Tropical Depression Four forms to the east of the Cape Verde Islands.
  August 14
  0000 UTC (8 p.m. AST August 13) – Tropical Depression Five forms roughly midway between the Cape Verde Islands and the Windward Islands.
  1200 UTC (8 a.m. AST) – Tropical Storm Five strengthens into Tropical Storm Bonnie.
  August 16
  Tropical Depression Four becomes a remnant low near the Azores.
  0000 UTC (8 p.m. AST August 15) – Tropical Storm Bonnie strengthens to a Category 1 hurricane.
  0600 UTC (2 a.m. AST) – Hurricane Bonnie strengthens to a Category 2 hurricane.
  August 17
  0000 UTC (8 p.m. AST August 16) – Hurricane Bonnie weakens to a Category 1 hurricane.
  August 19
  1800 UTC (2 p.m. AST) – Bonnie transitions into an extratropical storm.
  August 20
  1200 UTC (8 a.m. AST) – A subtropical depression forms several hundred miles off the Outer banks of North Carolina.
  August 21
  1200 UTC (8 a.m. AST) – The subtropical storm strengthens into Subtropical Storm Charley.
  August 23
  0000 UTC (8 p.m. AST August 22) – Subtropical Storm Charley strengthened and transitions into a fully tropical Category 1 hurricane.
  August 24
  0600 UTC (2 a.m. AST) – Hurricane Charley weakens to a tropical storm.
  August 25
  Tropical Depression Six forms to the west of the Cape Verde Islands.
  August 26
  0000 UTC (8 p.m. AST August 25) – Tropical Storm Charley merged with an intense extratropical cyclone.
  August 29
  Tropical Depression Six degenerates to a remnant low.
caption: Satellite imagery of Hurricane Allen near peak intensity.
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