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2017 Atlantic hurricane season
First system formed April 19, 2017
Last system dissipated Season ongoing
Strongest storm Maria - 908 mbar, 175 mph (1-minute sustained)
Total depressions 14
Total storms 13
Hurricanes 7
Major hurricanes 4
ACE index 134.1
Total fatalities 231 total
Total damage > $125 billion (2017 USD)
The 2017 Atlantic hurricane season is an ongoing event in tropical cyclone formation in the Atlantic basin. This season officially began on June 1 and will officially end on November 30, dates that delimit the start and end of the season. However, the formation of tropical cyclones is possible at any time of year, as shown by Tropical Storm Arlene. This season is likely going to have ENSO-neutral or Weak El Nino conditions, based on current long-range models. This season will also be the first season in which the NHC issues advisories on potential tropical cyclones threatening land.

Pre-Season Forecasts

On December 13, 2016, Tropical Storm Risk (TSR) issued their first prediction for the 2017 Atlantic hurricane season, forecasting near average activity with 14 named storms, 6 hurricanes, and 3 major hurricanes. They said in their prediction that there was high uncertainty with the outcome of the season, as typical with their December forecasts. The next day, Colorado State University (CSU) issued their annual December qualitative discussion, noting that the activity of the season would be heavily dependent on whether El Nino develops and the state of the Atlantic Multidecadal Oscillation (AMO). In this discussion, probabilities were slightly higher for an above-normal season than a below-normal season.

On April 5, 2016, TSR released its April forecast, lowering their numbers to 11 named storms, 4 hurricanes and 2 major hurricanes with an ACE of around 67 due to the possibility of El Nino. The next day, Colorado State University (CSU) released its April forecast, also predicting 11 named storms, 4 hurricanes and 2 major hurricanes. They predicted an ACE of 75, slightly more than TSR. On April 17, 2017, The Weather Channel issued their 2017 forecast, predicting 12 named storms, 6 hurricanes and 2 major hurricanes.

Timeline

Storms

Tropical Storm Arlene

Main article: Tropical Storm Arlene (2017)
Tropical storm (SSHWS)
TSArlene2017.png Arlene 2017 track.png
Duration April 19 – April 21
Peak intensity 50 mph (85 km/h) (1-min)  990 mbar (hPa)

Tropical Storm Arlene was an unusually early preseason system that formed over waters typically unable to sustain tropical cyclogenesis.

Tropical Storm Bret

Main article: Tropical Storm Bret (2017)
Tropical storm (SSHWS)
Bret 2017-06-20 0210Z.jpg Bret 2017 track.png
Duration June 19 – June 20
Peak intensity 45 mph (75 km/h) (1-min)  1007 mbar (hPa)
 Tropical Storm Bret was a rare storm that formed in the Main Development Region in June, an unusual occurrence. Bret would make landfall in Trinidad and Tobago, and then Venezuela, causing minimal damage and two deaths (one direct, one indirect). 

Tropical Storm Cindy

Main article: Tropical Storm Cindy (2017)
Tropical storm (SSHWS)
Cindy 2017-06-21 1645Z.jpg Cindy 2017 track.png
Duration June 20 – June 23
Peak intensity 60 mph (95 km/h) (1-min)  992 mbar (hPa)
 Tropical Storm Cindy developed in the Gulf of Mexico on June 20, and went on to landfall 2 days later in Cameron Parish, Louisiana, becoming the first to landfall in the state since Hurricane Isaac of 2012. Damage was minimal and 2 people were killed (One direct, one indirect).

Tropical Depression Four 

Main article: Tropical Depression Four (2017)
Tropical depression (SSHWS)
04L 2017-07-06 1605Z-1.jpg 04L 2017 track.png
Duration July 6 – July 7
Peak intensity 30 mph (45 km/h) (1-min)  1008 mbar (hPa)
 Tropical Depression Four developed out of a tropical wave on July 6. Due to dry air, the depression dissipated a day later. It did not affect land.

Tropical Storm Don

Main article: Tropical Storm Don (2017)
Tropical storm (SSHWS)
Don 2017-07-18 1750Z.jpg Don 2017 track.png
Duration July 17 – July 19
Peak intensity 50 mph (85 km/h) (1-min)  1007 mbar (hPa)
 

Tropical Storm Emily

Main article: Tropical Storm Emily (2017)
Tropical storm (SSHWS)
Emily 2017-07-31 1555Z.jpg Emily 2017 track.png
Duration July 31 – August 2
Peak intensity 45 mph (75 km/h) (1-min)  1005 mbar (hPa)

Hurricane Franklin

Main article: Hurricane Franklin
Category 1 hurricane (SSHWS)
800px-Franklin 2017-08-09 1854Z.jpg Franklin 2017 track.png
Duration August 7 – August 10
Peak intensity 85 mph (140 km/h) (1-min)  981 mbar (hPa)

Hurricane Gert

Main article: Hurricane Gert (2017)
Category 2 tropical cyclone (SSHWS)
Gert 2017-08-16 Suomi NPP.jpg Gert 2017 track.png
Duration August 13 – August 17
Peak intensity 165 km/h (105 mph) (1-min)  967 hPa (mbar)
 

Hurricane Harvey

Main article: Hurricane Harvey
Category 4 hurricane (SSHWS)
Harvey 2017-08-25 2231Z.png Harvey 2017 Track.png
Duration August 17 – September 1
Peak intensity 130 mph (215 km/h) (1-min)  938 mbar (hPa)
 

Hurricane Irma

Category 5 hurricane (SSHWS)
Irma 2017-09-06 1745Z.jpg Irma 2017 track.png
Duration August 30 – September 12
Peak intensity 185 mph (295 km/h) (1-min)  914 mbar (hPa)

Hurricane Jose

Category 4 hurricane (SSHWS)
Jose 2017-09-08 1425Z.jpg Jose 2017 track.png
Duration September 5 – Currently Active
Peak intensity 155 mph (250 km/h) (1-min)  938 mbar (hPa)

Hurricane Katia

Category 2 hurricane (SSHWS)
Katia 2017-09-08 1930Z.jpg Katia 2017 track.png
Duration September 5 – September 9
Peak intensity 105 mph (165 km/h) (1-min)  972 mbar (hPa)

Tropical Storm Lee

Tropical storm (SSHWS)
Counterclockwise vortex
Duration September 15 – September 18
Peak intensity 40 mph (65 km/h) (1-min)  1007 mbar (hPa)

Hurricane Maria

Category 5 hurricane (NHC)
150px
Duration September 16 – Currently Active
Peak intensity 160 mph (260 km/h) (1-min)  924 mbar (hPa)

Storm names

The following names will be used in the 2017 Atlantic hurricane season. They are on List III of the 6 rotating naming lists used for the Atlantic basin. This list is largely the same as the one used in the 2011 Atlantic hurricane season with the exception of Irma, which replaced the destructive Irene. If this list is exhausted, the Greek alphabet will be used, as it was in the hyperactive 2005 Atlantic hurricane season.

  • Arlene
  • Bret
  • Cindy
  • Don
  • Emily
  • Franklin
  • Gert
  • Harvey 
  • Irma
  • Jose (active)
  • Katia
  • Lee
  • Maria (active)
  • Nate (unused)
  • Ophelia (unused)
  • Philippe (unused)
  • Rina (unused)
  • Sean (unused)
  • Tammy (unused)
  • Vince (unused)
  • Whitney (unused)

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