Tropical Storm Dean (2001)

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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
ArrowUp.svg Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

A tropical wave exited western Africa between August 14–15. Moving westward, the wave gradually developed thunderstorms, [1] although unfavorable upper-level wind shear prevented rapid development. [2] Late on August 21, the wave passed through the northern Lesser Antilles, [1] and the convection became better organzied after the wind shear dropped. [3] On August 22, Tropical Storm Dean developed near Saint Croix, reaching winds of 60 mph (95 km/h) later that day. It moved quickly northwestward due to a ridge to its northeast. Strong wind shear caused the circulation to dissipate on August 23, east of the Bahamas. [1] [4] The remnants of Dean turned to the north, and became embedded within a large mid-level trough off the East Coast of the United States. [1] Convection increased around the system early on August 24 and gradually became more organized. [5] [6] The disturbance passed west of Bermuda early on August 25, and subsequently turned to the northeast. The remnants of Dean redeveloped into a tropical depression on August 26, about 220 miles (350 km) north of Bermuda. It soon restrengthened into a tropical storm, [1] which developed an eye feature in the convection. [7] Dean reached peak winds of 70 mph (110 km/h) late on August 27 while located about 465 miles (748 km) southwest of Cape Race, Newfoundland. [8] Weakening over cooler waters, Dean became extratropical on August 28 about 145 miles (233 km) east-southeast of Cape Race, Newfoundland. The extratropical storm continued northeastward until being absorbed by a frontal low on August 29. [1]

Impact and preparations

Caribbean

The precursor disturbance to Dean dropped heavy rainfall on Saint Martin of around 5 inches (130 mm). [9] In the United States Virgin Islands, the precursor disturbance produced 1.07 inches (27 mm) of rain in Saint Thomas, with gusts to 48 mph (77 km/h). [1] Power outages occurred throughout the territory. There was minor flooding on Saint Croix. Some roads were damaged in Saint John. [10]

Tropical Storm Dean dropped heavy rainfall across Puerto Rico, peaking at 12.7 inches (320 mm) in Salinas. Damage across the island totaled $7.7 million. Wind gusts reached 36 mph (58 km/h) at Roosevelt Roads Naval Station. The passage of Dean resulted in widespread flooding in eastern and southern Puerto Rico, collapsing two bridges and one road. Several highways were under water, and one car was swept away by the floodwaters, although the four occupants were rescued. Throughout the island, about 1,320 houses were flooded, and two houses experienced collapsed roofs. [11] By the night after the storm passed the island, more than 16,000 were without power, while almost 70,000 lacked potable water. Over 130 people were evacuated from low-lying areas to hurricane shelters. [12] Two people were injured in Peñuelas, [11] and three were injured in Nagüabo when the ceiling of a day care center collapsed. [12] 17 flights were canceled, and a cruise line altered its path. [12]

Bahamas, Bermuda, and Canada

Shortly after Dean formed, the government of the Bahamas issued a tropical storm warning for the southeastern Bahamas and the Turks and Caicos Islands. [1] When the storm weakened and ultimately dissipated, the warnings were canceled. [1] The remnants of Dean produced unsettled conditions across Bermuda, including a wind gust of 41 mph (66 km/h) and light rainfall of 0.31 inches (7.9 mm). [13] In Newfoundland, Dean produced wind gusts of 63 mph (101 km/h), with a peak rainfall of 4.2 inches (110 mm). [14]

See also

References

  1. 1 2 3 4 5 6 7 8 9 Lixion Avila (2001-10-03). "Tropical Storm Dean Tropical Cyclone Report" (PDF). National Hurricane Center. Retrieved 2011-12-03.
  2. ↑ Stacy Stewart (2001-08-21). "August 21 Tropical Weather Outlook". National Hurricane. Retrieved 2024-07-17.
  3. ↑ Stacy Stewart (2001-08-22). "August 22 Tropical Weather Outlook". National Hurricane Center. Retrieved 2024-07-17.
  4. ↑ Jack Beven (2001-08-22). "Tropical Storm Dean Discussion One". National Hurricane Center. Retrieved 2011-12-03.
  5. ↑ James Franklin (2001-08-24). "August 24 Tropical Weather Outlook" . Retrieved 2024-07-17.
  6. ↑ Jack Beven (2001-08-24). "August 24 Tropical Weather Outlook". National Hurricane Center. Retrieved 2024-07-17.
  7. ↑ Stacy Stewart (2001-08-27). "Tropical Storm Dean Discussion Seven". National Hurricane Center. Retrieved 2011-12-03.
  8. ↑ Stacy Stewart (2001-08-27). "Tropical Storm Dean Discussion Eight". National Hurricane Center. Retrieved 2011-12-03.
  9. ↑ World Meteorological Organization (2002). "Reports of hurricanes, tropical storms, tropical disturbances and related flooding during 2001". Archived from the original on 2004-11-26. Retrieved 2006-11-07.
  10. ↑ "Virgin Islands Tropical Storm Event Report". National Climatic Data Center. Retrieved January 21, 2025.
  11. 1 2 "Puerto Rico Tropical Storm Event Report". National Climatic Data Center. Retrieved January 21, 2025.
  12. 1 2 3 "Storm Dean Weakens in Caribbean". Associated Press. 2001-08-24. Archived from the original on 2016-01-18. Retrieved 2006-11-07.
  13. ↑ Bermuda Weather Service (2001). "Weather Summary for August 2001". Archived from the original on 2012-02-05. Retrieved 2006-11-07.
  14. ↑ Canadian Hurricane Centre (2010-09-14). "2001-Dean". Archived from the original on 2012-08-05. Retrieved 2024-07-18.
Tropical Storm Dean
Dean 2001-08-27 1425Z.jpg
Tropical Storm Dean south of Nova Scotia on August 27
Tropical cyclones of the 2001 Atlantic hurricane season
2001 Atlantic hurricane season summary.png

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