Tropical Storm Philippe (2017)

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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
Disc Plain black.svg Tropical cyclone
Solid black.svg Subtropical cyclone
ArrowUp.svg Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

Philippe originated from the interaction of a tropical wave and the Central American Gyre. A tropical wave moved off the coast of West Africa on October 16, and traversed westward across the tropical Atlantic. [1] On October 22, the National Hurricane Center (NHC) began to note the possibility of tropical cyclogenesis over the southwestern Caribbean Sea. [2] The disturbance reached the southwestern Caribbean by October 24, where it interacted with the Central American Gyre, developing a broad area of low pressure the following day just offshore Nicaragua. Convective activity associated with the low began to increase, as it began to drift gradually west-northwestward. On October 27, connective associated with the system became more concentrated as it moved near the northeastern coast of Honduras. At this time, Hurricane hunters reconnaissance aircraft found winds of around 35 mph (56 km/h) in the disturbance. However, the storm lacked a well-defined center, and thus it was not upgraded to tropical depression status. [1] Late that day, the NHC designated the disturbance as Potential Tropical Cyclone Eighteen, while it was located roughly 415 miles (668 km) south-southwest of Havana, Cuba. [3] Although, at 12:00 UTC the next day, satellite imagery and reconnaissance aircraft data displayed a well-defined center, prompting the upgraded of Eighteen to a tropical depression, about 100 miles (160 km) south-southwest of Isla de la Juventud. [1]

Around this time, vertical wind shear affecting the system became more favorable for intensification. [4] The depression also shifted towards the northeast due to a mid-latitude trough that moved into the Southeastern United States and western Gulf of Mexico. By 18:00 UTC that same day, the depression strengthened into Tropical Storm Philippe while just southeast of Isla de la Juventud. Its tropical storm status was shorted-lived, however, as it made landfall on the southern coast of the Zapata Peninsula, Cuba at 22:00 UTC. This combined with strong southwesterly wind shear caused Phillipe to quickly weaken to a tropical depression by 00:00 UTC on October 29 before dissipating shortly thereafter. It remnants moved quickly northeastward ahead of the trough and spawned a new non-tropical low-pressure area just hours after it dissipated. The low moved over South Florida and the central and northwestern Bahamas before being absorbed into a cold front at 12:00 UTC. [1]

Preparations and impact

Central America and Cayman Islands

The precursor to Tropical Storm Philippe paralleling the coast of Central America on October 25 Invest 93L 2017-10-25.jpg
The precursor to Tropical Storm Philippe paralleling the coast of Central America on October 25

Potential Tropical Cyclone Eighteen, and its precursor which paralleled the coast of Central America, brought heavy rainfall to Nicaragua and Honduras. [5] Due to these rains, the entire country of Nicaragua was placed under a yellow alert on October 24. [6] This was later upgraded into a red alert by October 27 for portions of the country. [7] The intense rainfall caused by the system in Nicaragua overflowed rivers, which damaged bridges and streets. Thousands of people had to be evacuated to safety as a result of floods. Widespread power outages were reported across several departments. More than 2,317 residences were inundated by floodwaters, with 30 destroyed. Over 17,450 were left without access to drinking water. A total of five fatalities occurred due to the floods in Nicaragua; four artisan miners who drowned after the well they worked in flooded, and a 15-year-old child who fell into a ravine. [8]

In the Cayman Islands, Philippe prompted a Tropical Storm Warning for the territory. [9]

Cuba and The Bahamas

Tropical Storm Philippe
Philippe 2017-10-28 1854Z.jpg
Tropical Storm Philippe moving over Florida, Cuba, and The Bahamas on October 28

Heavy rain fell across Cuba and The Bahamas in relation to the storm. In the Bahamas, a wind gust of 51 mph (82 km/h) was recorded at Settlement Point, with sustained winds reaching 35 mph (56 km/h). [10]

United States

Florida

Ahead of Philippe, a Tropical Storm Watch was put in effect from Craig Key to Golden Beach in South Florida, at 15:00 UTC on October 28. [11] The watch was later discontinued early the next day, as Philippe was no longer deemed a threat to the region. [12] Residents in the path of the storm were advised to prepare for heavy rainfall. [13] Initially, Philippe was thought to have made landfall in Florida, although it was later revealed in the post-season analysis that the storm had already dissipated, with its track being confused with a nearby area of low pressure. Had Philippe actually made landfall in the state, it would have been the first November tropical cyclone to do so since Hurricane Mitch in 1998. [1] [14]

Damage from one of the tornadoes Philippe spawned in Westchester, Florida Tropical Storm Philippe Tornado Damage in SW Miami.jpg
Damage from one of the tornadoes Philippe spawned in Westchester, Florida

Heavy rainfall and flash flooding was reported in parts of South Florida, prompting Flood Watches for Broward, Miami-Dade, and Palm Beach counties. [15] A peak precipitation accumulation of 10.93 inches (278 mm) was reported in Aberdeen. [16] Philippe also brought gusty winds to the area, with a peak wind gust of 47 mph (76 km/h) being recorded at the Dania Beach Pier on October 29. [17] Minor tree damage was reported across the Miami metropolitan area due to tropical storm-force gusts. [18] A total of three tornadoes were reported in Florida due to the storm. [19] An EF0 tornado was reported in Westwood Lakes, which affected a shopping center and neighborhood. Tree limbs fell onto cars at the Bird Bowl Shopping Center, damaging a windshield. The shopping center also lost electricity during the tornado. The front window of a CosmoProf Salon Supply shop was shattered, with the roof of the store being torn off. The roof of a nearby bowling alley was also damaged, letting water pour into meeting and mechanical rooms, and shifting a dumpster behind the building. The bowling alley was forced to close for a day, to allow employees to cleanup damage. The tornado also damaged the Westchester neighborhood, downing trees, utility lines, and fences. Minor damage to roofs and siding was also reported. Florida Power & Light rushed to restore electricity to the shopping center and neighborhood, following the tornado. [20] [21]

A second EF0 tornado occurred in Boynton Beach that caused minor roof damage at several residences and broke a streetlight. Two vacant mobile homes were also damaged by the storm, one had its roof blown off and tossed hundreds of yards away, while the other had blown out windows. [22] [23] A third EF0 tornado occurred in Lake Clarke Shores, that damaged power and cable lines, fences, and downed trees. A wind gust of 75 mph (121 km/h) was reported on the Forest Hill Community High School campus as the tornado moved into West Palm Beach, with a nearby street sign being blown down. [24] Heavy rains from the storm overwhelmed a water treatment plant that served the cities of Palm Beach and West Palm Beach, spilling 1.2 million gallons (4.5 million liters) of sewage water into a retention basin. [25] Fortunately, no casualties or monetary damages were reported in Florida. [19]

Elsewhere

GOES-16 water vapor imagery of the remnants of Philippe as a bomb cyclone affecting the Northeastern United States on October 30 Satellite imagery October 2017 bomb cyclone.png
GOES-16 water vapor imagery of the remnants of Philippe as a bomb cyclone affecting the Northeastern United States on October 30

The remnants of Tropical Storm Philippe merged with a mid-latitude system, developing a low pressure system, which forced the coldfront that Philippe had also been absorbed into through New England, along with moisture from Philippe. In Connecticut, heavy downpours caused a stream to overflow its banks, shutting down a road in Bristol. Portions of Connecticut received up to 6 inches (150 mm) of precipitation from the storm system. [26] High winds also affected the state, toppling numerous trees in Danielson. [27] Strong winds in Newtown downed utility lines and caused a tree to fall onto a house, severely damaging a garage. Public schools in the town were closed due to weather conditions. [28] A tree collapsed onto a residence in Wethersfield, fortunately causing no casualties. Total damage in Connecticut reached $21,000 (2017 USD). [29]

See also

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References

  1. 1 2 3 4 5 6 Daniel Brown (January 31, 2017). "Tropical Cyclone Report – Tropical Storm Philippe (AL182017)" (PDF). National Hurricane Center. Retrieved February 12, 2021.
  2. ↑ John Cangialosi (October 22, 2017). "Five-Day Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved February 12, 2021.
  3. ↑ Michael Brennan (October 27, 2017). "Potential Tropical Cyclone Eighteen Advisory Number 1". National Hurricane Center. Retrieved March 30, 2021.
  4. ↑ Stacy Stewart (October 28, 2017). "Tropical Depression Eighteen Discussion Number 4". National Hurricane Center. Retrieved March 30, 2021.
  5. ↑ Jack Beven (October 25, 2017). "Two-Day Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved March 28, 2021.
  6. ↑ Edición Digital (October 24, 2017). "Nicaragua en alerta amarilla por lluvias que espera que afectan todo el territorio". La Prensa (in Spanish). Retrieved March 28, 2021.
  7. ↑ "Nicaragua declara la alerts roja tras las intensas lluvias que han dejado al menos cinco muertos". Notimérica (in Spanish). October 27, 2017. Retrieved March 28, 2021.
  8. ↑ "Nicaragua declara alerta roja por lluvias que dejan cinco muertos". Yahoo! Noticias (in Spanish). Agence France-Presse. October 26, 2017. Retrieved March 28, 2021.
  9. ↑ Javier David (October 29, 2017). "Tropical Storm Philippe strengthens, bears down on Cuba and the Bahamas". CNBC. Retrieved March 29, 2021.
  10. ↑ Tropical Storm Philippe Drenches Florida and Cuba (RECAP), The Weather Channel, October 29, 2017
  11. ↑ Stacy Stewart (October 28, 2017). "Tropical Depression Eighteen Forecast/Advisory Number 4". National Hurricane Center. Retrieved March 28, 2021.
  12. ↑ Richard Pasch (October 29, 2017). "Tropical Storm Philippe Forecast/Advisory Number 7". National Hurricane Center. Retrieved March 27, 2021.
  13. ↑ Greg LaRose (October 29, 2017). "Tropical Storm Philippe poorly organized, turns northeast toward Florida". NOLA.com. Retrieved March 28, 2021.
  14. ↑ "Damage reported in Florida as Philippe moves into Atlantic". Dayton Daily News. October 29, 2017. Retrieved March 28, 2021.
  15. ↑ Jack Moore (October 29, 2017). "Flooding Risk as Tropical Storm Philippe Heads Toward the Florida Keys". Newsweek. Retrieved March 28, 2021.
  16. ↑ "Tropical Cyclone Point Maxima". Weather Prediction Center. Retrieved March 28, 2021.
  17. ↑ Event: Tropical Depression in Coastal Broward County, Florida. National Centers for Environmental Information (Report). October 28–29, 2017. Retrieved March 28, 2021.
  18. ↑ Event: Tropical Depression in Metropolitan Miami-Dade, Florida. National Centers for Environmental Information (Report). October 28–29, 2017. Retrieved March 28, 2021.
  19. 1 2 "Florida Event Reports for October 28–30, 2017". National Centers for Environmental Information. October 28–30, 2017. Retrieved March 28, 2021.
  20. ↑ Event: Tornado in Westwood Lakes, Florida. National Centers for Environmental Information (Report). October 28, 2017. Retrieved March 28, 2021.
  21. ↑ Rebecca Vargas (October 29, 2017). "Tornado causes damage in SW Miami-Dade, shuts down bowling alley". WSVN 7 News Miami. Retrieved March 28, 2021.
  22. ↑ Event: Tornado in Palm Beach County, Florida. National Centers for Environmental Information (Report). October 28, 2017. Retrieved March 28, 2021.
  23. ↑ Luli Ortiz (October 28, 2017). "Severe storms damage multiple homes in Boynton Beach". CBS 12 News. Retrieved March 28, 2021.
  24. ↑ Event: Tornado in Palm Springs, Florida. National Centers for Environmental Information (Report). October 28, 2017. Retrieved March 28, 2021.
  25. ↑ "Rain from Tropical Storm Philippe caused big sewage spill in Palm Beach County". WPTV West Palm Beach. Associated Press. October 31, 2017. Retrieved March 28, 2021.
  26. ↑ "Event: Heavy Rain in Hartford County, Connecticut". National Centers for Environmental Information. October 30, 2017. Retrieved March 30, 2021.
  27. ↑ "Event: Strong Wind in Windham County, Connecticut". October 30, 2017. Retrieved March 30, 2021.
  28. ↑ Shannon Hicks (November 3, 2017). "Edge Of Tropical Storm Philippe Glances Town Before Continuing North With Winds, Rain". Newtown Bee. Retrieved March 29, 2021.
  29. ↑ "Event: Strong Wind in Hartford County, Connecticut". National Centers for Environmental Information. October 30, 2017. Retrieved March 29, 2021.
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