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User:Hurricane Noah/Hurricane Isaac (2018)

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Hurricane Isaac
Category 1 hurricane (SSHWS/NWS)
Hurricane Isaac at peak intensity on September 10
FormedSeptember 7, 2018
DissipatedSeptember 15, 2018
Highest winds1-minute sustained: 75 mph (120 km/h)
Lowest pressure993 mbar (hPa); 29.32 inHg
FatalitiesNone
DamageNone
Areas affectedWest Africa, Lesser Antilles
Part of the 2018 Atlantic hurricane season

Hurricane Isaac was a tropical cyclone that impacted multiple islands in the Lesser Antilles as a tropical storm. The ninth named storm and fifth hurricane of the 2018 Atlantic hurricane season, Isaac formed from a tropical wave that emerged off the coast of West Africa on September 2. The disturbance was monitored for several days before a tropical depression formed on September 7. On September 8, the depression strengthened into a tropical storm and was given the name Isaac. On September 9, Isaac became a hurricane. On September 11, Isaac weakened back into a tropical storm due to increasing wind shear. Isaac's core passed in between Martinique and Dominica on September 13. Isaac was downgraded to a tropical depression on September 14 before regaining tropical storm status later in the day. Early on September 15, Isaac degenerated into an open trough.

Meteorological history

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Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

Hurricane Isaac originated from a tropical wave that emerged off the coast of West Africa on September 2.[1] The National Hurricane Center (NHC) monitored the disturbance for the next five days as it moved west to west-northwest across the Atlantic.[2] At 21:00 UTC on September 7, the NHC announced that Tropical Depression Nine had formed approximately 1,755 miles (2,820 km) east of the Windward Islands.[3] One day later, the depression strengthened into Tropical Storm Isaac.[4] At 03:00 UTC on September 10, Isaac strengthened into a hurricane.[5] At 03:00 UTC on September 11, Isaac weakened back into a tropical storm due to increasing wind shear.[6] Isaac's center passed between Dominica and Martinique around 13:00 UTC on September 13.[7]

Preparations and impact

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At 15:00 UTC on September 11, in anticipation of Isaac's passage through the Lesser Antilles, the government of France issued a hurricane watch for Guadeloupe and Martinique. At the same time, the government of Barbados issued a hurricane watch for Dominica and the Meteorological Service of Antigua and Barbuda issued a tropical storm watch for Antigua and Montserrat.[8] At 18:00 UTC, the Meteorological Service of Antigua and Barbuda issued a tropical storm watch for St. Kitts and Nevis.[9] At 03:00 UTC on September 12, the hurricane watches for Dominica, Martinique, and Guadeloupe were changed to tropical storm warnings after Isaac weakened into a tropical storm. Additionally, the government of Netherlands issued a tropical storm watch for Saba and St. Eustatius.[10] At 18:00 UTC, the government of France issued a tropical storm watch for St. Martin and the government of Sint Maarten issued a tropical storm watch for St. Maarten.[11] At 09:00 UTC on September 13, the government of Antigua issued a tropical storm watch for Barbuda.[12]

See also

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References

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  1. ^ Stewart, Stacy. NHC Graphical Outlook Archive. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 9 September 2018.
  2. ^ Cangialosi, John; Berg, Robbie. NHC Graphical Outlook Archive. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 9 September 2018.
  3. ^ Cangialosi, John. Tropical Depression Nine Advisory Number 1. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 10 September 2018.
  4. ^ Beven, Jack. Tropical Storm Isaac Advisory Number 5. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 10 September 2018.
  5. ^ Zelinsky, David. Hurricane Isaac Advisory Number 10. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 10 September 2018.
  6. ^ Zelinsky, David. Tropical Storm Isaac Advisory Number 14. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 13 September 2018.
  7. ^ Blake, Eric. Tropical Storm Isaac Discussion Number 24. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 14 September 2018.
  8. ^ Blake, Eric. Tropical Storm Isaac Advisory Number 16. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 14 September 2018.
  9. ^ Blake, Eric. Tropical Storm Isaac Intermediate Advisory Number 16A. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 14 September 2018.
  10. ^ Berg, Robbie. Tropical Storm Isaac Advisory Number 18. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 14 September 2018.
  11. ^ Blake, Eric. Tropical Storm Isaac Intermediate Advisory Number 20A. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 14 September 2018.
  12. ^ Zelinsky, David. Tropical Storm Isaac Advisory Number 23. National Hurricane Center (Report). National Oceanic and Atmospheric Administration. Retrieved 14 September 2018.
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