Hurricane Nicole (2016)

Hurricane Nicole
Category 4 major hurricane (SSHWS/NWS)

Hurricane Nicole rapidly intensifying south of Bermuda on October 12
Formed October 4, 2016
Dissipated October 20, 2016
(Extratropical after October 18)
Highest winds 1-minute sustained: 130 mph (215 km/h)
Lowest pressure 950 mbar (hPa); 28.05 inHg
Fatalities 1 direct, 1 missing
Damage Unknown
Areas affected Bermuda, North Atlantic Coastlines
Part of the 2016 Atlantic hurricane season

Hurricane Nicole was the first major hurricane to directly impact or make landfall on Bermuda since Hurricane Fabian in 2003. The fourteenth named storm, sixth hurricane and third major hurricane of the active 2016 Atlantic hurricane season, Nicole formed in the central Atlantic on October 4. The small, slow-moving storm defied forecasts by steadily organizing in spite of strong wind shear, and it rapidly intensified to a Category 2 hurricane on October 7. The wind shear finally took its toll by October 8, reducing Nicole to a minimal tropical storm, as a building high pressure system forced the storm southwards. Intensification began once again as Nicole retreated towards Bermuda, with the storm briefly reaching Category 4 status. The eye of the storm ultimately passed over Bermuda on October 13, at Category 3 hurricane status. The storm's approach to Bermuda forced schools, businesses, and government offices to close, while flight, bus, and ferry services were interrupted. In the end, the storm became the third longest-lived Atlantic hurricane of the 2010s, behind Hurricane Philippe of 2011, and Hurricane Nadine of 2012.

Meteorological history

Map plotting the track and intensity of the storm according to the Saffir–Simpson hurricane wind scale

On October 1, 2016, the National Hurricane Center (NHC) began monitoring a weak tropical wave-induced low pressure area producing scattered showers and thunderstorms, along with winds just shy of tropical storm intensity, over the central Atlantic. Strong wind shear prevented the disturbance from organizing significantly as it tracked northwestward for the next several days.[1] On October 4, satellite data confirmed the presence of a well-defined circulation center with gale-force winds.[2][3] Around the same time, thunderstorm activity became better organized and banding features began to evolve over the eastern side of the disturbance. As a result, the NHC classified the system as Tropical Storm Nicole at 15:00 UTC, while it was located about 525 mi (845 km) northeast of San Juan, Puerto Rico. The storm, still plagued by inhibiting wind shear, was forecast to remain weak.[3][4]

Nicole's cloud pattern gradually improved on October 5, partially shielded from the effects of wind shear by an upper-level low situated atop the tropical storm. Although convection remained lopsided, a distinct mid-level eye feature developed within the unusually small cyclone.[5] The storm continued moving generally northwestward around a subtropical ridge to its north.[6] Nicole gradually intensified as it became more symmetrical in appearance, and at 18:00 UTC on October 6, it was upgraded to a Category 1 hurricane about 345 mi (555 km) south of Bermuda.[7] A period of rapid intensification brought Nicole to its initial peak intensity as a Category 2 hurricane early on October 7, with sustained winds of 105 mph (165 km/h) and a minimum pressure of 968 mbar (28.59 inHg). At the same time, a pinhole eye became evident on satellite imagery.[8] Considering the strong shear produced by outflow from powerful Hurricane Matthew to Nicole's southwest, the NHC described this strengthening trend as "unexpected".[9] An approaching trough eroded the ridge to the north, leaving the hurricane in an area of very weak steering currents;[10] consequently, its forward movement slowed to nearly stationary.[11]

Nicole shortly after being classified as a tropical storm October 4

By early on October 7, Nicole had finally felt the effects of strong wind shear and quickly weakened back into a tropical storm.[12] A new blocking high pressure area began forming to the north, driving Nicole slowly toward the south as the storm's convective pattern continued to deteriorate.[13] On the morning of October 8, the storm's center was displaced far to the north of the waning deep convection, and Nicole further declined to a minimal tropical storm.[14] However, later that day, unusually warm sea surface temperatures enabled a "tremendous burst of deep convection" close to the center, and Nicole began to reintensify. That the storm was able to survive in spite of as much as 50 mph (85 km/h) of northerly shear proved "puzzling" to forecasters.[15][16] Convection oscillated in coverage and intensity throughout the day on October 9; bursts of deep convection, which at one point coalesced into a burgeoning central dense overcast, repeatedly subsided to leave the center exposed. As steering currents slackened, Nicole slowed to a drift before the retreating ridge of high pressure allowed the storm to resume a northward course.[17][18] By the morning of October 10, thunderstorms associated with the tropical storm had "faded away into a shallow and shapeless cloud mass", according to one NHC forecaster.[19] The storm remained disorganized for the next day or so, until several bands of convection began to wrap around a ragged eye feature in response to abating wind shear.[20] Nicole reattained Category 1 hurricane intensity at 18:00 UTC on October 11, and its satellite appearance continued to improve.[21]

After meandering westward for a time, the hurricane turned north and soon accelerated toward the northeast as it recurved into the mid-latitude westerlies. While nearing Bermuda, Nicole exhibited a highly symmetrical cloud pattern centered around a large and well-defined eye.[22] The storm underwent another period of rapid intensification, and eventually reached its peak intensity as a Category 4 hurricane with winds of 130 mph (215 km/h) and a minimum pressure of 950 mbar (28.05 inHg).[23] Nicole maintained its strength for nine hours before starting to weaken because of increasing southwesterly shear.[24][25] At around 15:00 UTC on October 13, the eye of Nicole passed over Bermuda, marking a direct hit.[26] While passing the islands, the storm's inner core lost some of its structure, and the eye as viewed from radar was tilted to the southwest of the central clearing displayed on satellite.[25] At 09:00 UTC on October 14, a southwesterly wind shear reduced the system to Category 1 status, although swells from Nicole affected Bermuda and portions of the U.S. east coast and Atlantic Canada.[27] In the early morning of October 15, Nicole weakened again to a tropical storm, only to restrengthen into a hurricane twelve hours later,[28] becoming the first storm to strengthen to hurricane status thrice since Hurricane Tomas of 2010.[29] Shortly after, Nicole slowed tremendously, as it became stationed south of a high pressure system. Its wind field started to expand drastically, eventually making it the fourth largest Atlantic hurricane ever recorded. Shortly after, Nicole finally transitioned into an extratropical cyclone on October 18, ending its nearly 2-week journey across the Atlantic basin.

Preparations and impact

A map of sea surface temperature anomalies along the track of Hurricane Nicole. The hurricane's winds upwelled cooler waters below the surface, leaving behind a cold wake along its path.

Bermuda

On October 10, while the storm was still located about 415 mi (670 km) to the south, the Bermuda Weather Service issued a hurricane watch for the islands of Bermuda.[30] A concurrent tropical storm warning was posted early the next morning,[31] and both advisories were replaced with a hurricane warning when Nicole reintensified into a hurricane.[21] Residents boarded up their homes and businesses and placed sandbags to minimize the effects of flooding. Small boats were removed from marinas for safe storage, while larger vessels that remained in the water were tightly secured.[32] Schools and government offices closed for the duration of the storm, while ferry and bus services were suspended on October 12. Additionally, commercial flights to and from L.F. Wade International Airport were canceled.[33][34] The threat of the storm prompted three cruise liners to cancel their scheduled stops at Bermuda.[35]

As a precaution, officials closed the Causeway late on October 12.[36] Some 140 Royal Bermuda Regiment soldiers were deployed at strategic points, ready to assist in the aftermath of the storm.[37] At the Cedarbridge Academy, a government shelter was opened with cots and emergency supplies for storm victims.[38] Bermuda's only daily newspaper, The Royal Gazette, did not go to print on October 13.[39] With adverse weather conditions expected to impact a crucial NASA rocket tracking site in Bermuda, the launch of an International Space Station resupply spacecraft from Virginia's Wallops Flight Facility was postponed.[40] The mission had already been delayed, in part due to the threat of Hurricane Matthew.[41]

Strong swells from the slow-moving storm started affecting Bermuda on October 6.[42] Later, on October 11, gusty winds along the periphery of Nicole's circulation caused a brief power outage.[43] As the core of the hurricane passed over Bermuda, a weather station on Pearl Island recorded sustained winds of 87 mph (141 km/h) with gusts to 119 mph (191 km/h).[26] An elevated station at Commissioner's Point recorded slightly higher winds.[44] Nicole also dropped extremely heavy rainfall, amounting to 6.77 in (172 mm).[42]

The strong winds brought down trees and powerlines, leaving 27,341 households—approximately 90% of all electric customers in the territory—without service.[45] Service was predominately restored within a few days, though isolated outages reappeared well after the storm's passage, when salt deposits began disrupting the electric power distribution system.[46] The terminal building at L.F. Wade International Airport was partially unroofed, and rainwater leaks were reported throughout the facility.[47] Agriculture took a significant hit, as the storm destroyed fields of fruit and vegetable crops in various stages of growth. At least one farmer reported a nearly total loss of young vegetable plants.[48] Dozens of boats, some up to 80 ft (24 m) in length, were ripped from their moorings and left damaged, sunken, or crushed upon rocky sections of coastline.[49] Low-lying roadways and buildings were flooded, and some homes sustained roof damage, but the hurricane proved less destructive than initially feared. No fatalities or serious injuries were reported, although seven individuals were hospitalized with minor weather-related injuries.[50][51] An unusually high number of blackpoll warblers were spotted in Bermuda after Hurricane Nicole disrupted their transoceanic migration, forcing them to seek shelter.[52]

Atlantic coastlines

Although only Bermuda was directly affected by the hurricane, Nicole's large size stirred a tremendous area of high seas. Long-period swells propagated across the entire North Atlantic for a prolonged period.[53] One surfer went missing in Puerto Rico in relation to these swells.[54] Along the Florida coastline, hundreds of baby sea turtles were washed back ashore; roughly 500 were rescued by the Volusia Marine Science Center, and 75 by the Brevard Zoo.[55] In South Florida, the swells combined with the annual king tide, resulting in significant coastal flooding.[56] Water levels in Virginia Key and Miami rose 1 ft (0.30 m) above forecast levels. Coastal roads in Ft. Lauderdale became submerged with waves rolling into streets.[57] In Rodanthe, North Carolina, a large breaking wave pulled two teenagers out to sea; one managed to swim to shore safely while the other drowned. The United States Coast Guard assisted in search and rescue for nearly two days before the boy's body washed ashore. Between 20 and 30 other people required rescue from rip currents in the area.[58][59]

See also

References

  1. ↑ Robbie Berg. "Tropical Weather Outlook issued 2:00 am EDT Saturday, October 1, 2016". National Hurricane Center. Retrieved October 10, 2016.
  2. ↑ Richard Pasch. "Tropical Weather Outlook issued 8 am EDT Tuesday, October 4, 2016". National Hurricane Center. Retrieved October 10, 2016.
  3. 1 2 Richard Pasch (October 4, 2016). "Tropical Storm Nicole Discussion Number 1". National Hurricane Center. Retrieved October 10, 2016.
  4. ↑ Richard Pasch (October 4, 2016). "Tropical Storm Nicole Public Advisory Number 1". National Hurricane Center. Retrieved October 10, 2016.
  5. ↑ Robbie Berg (October 5, 2016). "Tropical Storm Nicole Discussion Number 6". National Hurricane Center. Retrieved October 10, 2016.
  6. ↑ John Cangialos (October 5, 2016). "Tropical Storm Nicole Discussion Number 4". National Hurricane Center. Retrieved October 10, 2016.
  7. ↑ Richard Pasche (October 6, 2016). "Hurricane Nicole Special Advisory Number 10". National Hurricane Center. Retrieved October 10, 2016.
  8. ↑ Eric Blake (October 7, 2016). "Hurricane Nicole Public Advisory Number 12". National Hurricane Center. Retrieved October 10, 2016.
  9. ↑ Todd Kimberlain (October 6, 2016). "Hurricane Nicole Discussion Number 11". National Hurricane Center. Retrieved October 10, 2016.
  10. ↑ John Cangialos (October 6, 2016). "Hurricane Nicole Discussion Number 8". National Hurricane Center. Retrieved October 10, 2016.
  11. ↑ Eric Blake (October 7, 2016). "Hurricane Nicole Discussion Number 12". National Hurricane Center. Retrieved October 10, 2016.
  12. ↑ Todd Kimberlain (October 7, 2016). "Tropical Storm Nicole Discussion Number 14". National Hurricane Center. Retrieved October 10, 2016.
  13. ↑ Todd Kimberlain (October 7, 2016). "Tropical Storm Nicole Discussion Number 15". National Hurricane Center. Retrieved October 10, 2016.
  14. ↑ Todd Kimberlain (October 8, 2016). "Tropical Storm Nicole Discussion Number 18". National Hurricane Center. Retrieved October 10, 2016.
  15. ↑ Todd Kimberlain (October 8, 2016). "Tropical Storm Nicole Discussion Number 19". National Hurricane Center. Retrieved October 10, 2016.
  16. ↑ Robbie Berg (October 8, 2016). "Tropical Storm Nicole Discussion Number 17". National Hurricane Center. Retrieved October 10, 2016.
  17. ↑ Todd Kimberlain (October 9, 2016). "Tropical Storm Nicole Discussion Number 23". National Hurricane Center. Retrieved October 10, 2016.
  18. ↑ Jack Beven (October 10, 2016). "Tropical Storm Nicole Discussion Number 24". National Hurricane Center. Retrieved October 10, 2016.
  19. ↑ Todd Kimberlain (October 10, 2016). "Tropical Storm Nicole Discussion Number 26". National Hurricane Center. Retrieved October 10, 2016.
  20. ↑ Daniel Brown (October 11, 2016). "Tropical Storm Nicole Discussion Number 30". National Hurricane Center. Retrieved October 12, 2016.
  21. 1 2 Daniel Brown (October 11, 2016). "Hurricane Nicole Intermediate Public Advisory Number 30A". National Hurricane Center.
  22. ↑ Daniel Brown (October 12, 2016). "Hurricane Nicole Discussion Number 34". National Hurricane Center. Retrieved October 12, 2016.
  23. ↑ Michael Brennan (October 12, 2016). "Hurricane Nicole Public Advisory Number 36". National Hurricane Center. Retrieved November 12, 2016.
  24. ↑ Daniel Brown, Robbie Berg (October 13, 2016). "Hurricane Nicole Public Advisory Number 37A". National Hurricane Center. Retrieved October 13, 2016.
  25. 1 2 Daniel Brown (October 13, 2016). "Hurricane Nicole Discussion Number 38". National Hurricane Center. Retrieved October 13, 2016.
  26. 1 2 Daniel Brown and Robbie Berg (October 13, 2016). "Hurricane Nicole Public Advisory Number 38". National Hurricane Center. Retrieved October 13, 2016.
  27. ↑ Avila, Lixion (October 14, 2016). "Hurricane Nicole Public Advisory Number 41". National Hurricane Center. Retrieved October 14, 2016.
  28. ↑ Berg, Robbie (October 14, 2016). "Hurricane Nicole Public Advisory Number 44". National Hurricane Center. Retrieved October 15, 2016.
  29. ↑ "Twin Typhoons in Philippines; Nicole of the North; Hundred-Degree Heat in Plains". Weather Underground. October 17, 2016. Retrieved October 18, 2016.
  30. ↑ Todd Kimberlain (October 10, 2016). "Tropical Storm Nicole Public Advisory Number 27". National Hurricane Center. Retrieved October 10, 2016.
  31. ↑ Lixon Avila (October 11, 2016). "Tropical Storm Nicole Public Advisory Number 29".
  32. ↑ Guy Cabral and Lisa Simpson (October 12, 2016). "Nicole: Residents make final preparations". The Royal Gazette. Retrieved October 12, 2016.
  33. ↑ "Advice, closures and cancellations". The Royal Gazette. October 11, 2016. Retrieved October 11, 2016.
  34. ↑ "Nicole upgraded to hurricane". The Royal Gazette. October 11, 2016. Retrieved October 11, 2016.
  35. ↑ "Nicole on track to hit Bermuda". The Royal Gazette. October 10, 2016. Retrieved October 10, 2016.
  36. ↑ Adrian Robson (October 12, 2016). "Island braced for direct hit". The Royal Gazette. Retrieved October 12, 2016.
  37. ↑ "Nicole live: Regiment adopts state of readiness". The Royal Gazette. October 12, 2016. Retrieved October 12, 2016.
  38. ↑ "Photos: Shelter Opens At CedarBridge Academy". Bernews. October 12, 2016. Retrieved October 12, 2016.
  39. ↑ "No Royal Gazette on Thursday". The Royal Gazette. October 12, 2016. Retrieved October 12, 2016.
  40. ↑ Karen Northon (October 11, 2016). "Atlantic Storm System Delays NASA Resupply Launch to Space Station". National Aeronautics and Space Administration. Retrieved October 11, 2016.
  41. ↑ Stephen Clark (October 10, 2016). "Critical Antares rocket launch set for Friday night". Spaceflight Now. Retrieved October 11, 2016.
  42. 1 2 "BWS Daily Climatology Written Summary". Bermuda Weather Service. October 26, 2016. Retrieved October 26, 2016.
  43. ↑ Jonathan Bell (October 11, 2016). "Belco reports first storm-related outage". The Royal Gazette. Retrieved October 11, 2016.
  44. ↑ Daniel Brown and Robbie Berg (October 13, 2016). "Hurricane Nicole Tropical Cyclone Update". National Hurricane Center. Retrieved October 13, 2016.
  45. ↑ "Photos: The Aftermath Of Hurricane Nicole". Bernews. October 13, 2016. Retrieved October 13, 2016.
  46. ↑ "Salt build-up causing electrical outages". The Royal Gazette. October 20, 2016. Retrieved October 24, 2016.
  47. ↑ Adam Zacharias (October 22, 2016). "Airport rain leaks 'amplified' by Nicole". The Royal Gazette. Retrieved October 24, 2016.
  48. ↑ Simon Jones (October 22, 2016). "Farmers count the cost of hurricane damage". The Royal Gazette. Retrieved October 24, 2016.
  49. ↑ Sarah Lagan (October 18, 2016). "Dozens of boats damaged or sunk". The Royal Gazette. Retrieved October 24, 2016.
  50. ↑ "Nicole live: storm moves on, Causeway shut". The Royal Gazette. October 13, 2016. Retrieved October 12, 2016.
  51. ↑ "Seven suffer minor injuries from Nicole". The Royal Gazette. October 14, 2016. Retrieved October 26, 2016.
  52. ↑ Owain Johnston-Barnes (October 24, 2016). "Blackpoll Warblers check in for a stopover".
  53. ↑ Stacy Stewart (October 16, 2016). Hurricane Nicole Discussion Number 51 (Report). Miami, Florida: National Hurricane Center. Retrieved October 19, 2016.
  54. ↑ Bihu Ray (October 13, 2016). "Bermuda braces for extremely dangerous hurricane Nicole". International Business Times. Retrieved October 19, 2016.
  55. ↑ "Hurricane Nicole pushes sea turtles back to Florida beaches". Naples Daily News. Melbourne, Florida. Associated Press. October 17, 2016. Retrieved October 19, 2016.
  56. ↑ Joey Flechas and Cresonia Hsieh (October 12, 2016). "King tides arriving in South Florida with extra swell from Hurricane Nicole". Miami Herald. Retrieved October 19, 2016.
  57. ↑ Jess Swanson (October 14, 2016). "Hurricane Nicole and King Tide Already Flooding Fort Lauderdale". Broward Palm Beach New Times. Retrieved October 19, 2016.
  58. ↑ Irene Nolan (October 13, 2016). "Teen swimmer missing off Rodanthe beach". Island Free Press. Retrieved October 19, 2016.
  59. ↑ Irene Nolan (October 17, 2016). "Update: Body of missing swimmer found near Avon pier". Island Free Press. Retrieved October 19, 2016.
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