2017 Atlantic Hurricane Season Recap

2017 Atlantic Basin Storms














5/25 5/29


9/7 9/16


10/26 10/31

Beryl *

07/05 7/15


9/9 9/15




7/8 7/15


9/13 9/19




8/7 8/9

Kirk **

9/22 9/28




8/15 8/18

Leslie ***

9/23 10/13




9/1 9/17

Michael ***

10/7; 10/12




9/3 9/6


10/9 10/12



* Beryl dissipated on July 9th then re-formed into a Sub Tropical Storm on July 14th, dissipated for good July 15th.

** Kirk dissipated on Sept. 25th then re-formed into a Tropical Storm on Sept. 26th. Kirk dissipated on Sept. 28th

*** Leslie dissipated on Sept. 25th then re-formed into a Sub Tropical Storm on Sept. 28th, organized into a Tropical Storm later that day, then intensified into a Hurricane a couple of days later. Leslie finally became Extra-Tropical on October 13th.

*** Major Hurricane Michael was upgraded in the HNC Post Season Report to a Category 5 Storm at landfall with 140Kts (160 MPH) wind speed.








Tropical Depression

Tropical Depression

< 38

< 33



Closed surface wind circulation about a well-defined center with winds less than 38 mph (33 kt).

Tropical Storm

Tropical Storm

39 - 73

34 - 63

> 980

< 4

Heavy rain can cause life threatening flooding.

Tropical Storm

Sub-Tropical Storm

39 - 73

34 - 63

> 980

< 4

low-pressure system that has characteristics of both tropical and extratropical cyclones.

Catagory 1

Category 1

74 - 95

64 - 82

994 - 980

4 - 5

Dangerous winds will produce some damage.

Catagory 2

Category 2

96 - 110

83 - 95

979 - 965

6 - 8

Very dangerous winds will cause serious damage

Catagory 3

Category 3

111 - 130

96 - 113

964 - 945

9 - 12

Major Hurricane...Extensive damage will occur

Catagory 4

Category 4

131 - 155


944 - 920

13 - 18

Devastating Hurricane...Extremely dangerous winds and storm surge will cause devastating damage

Catagory 5

Category 5



< 920

> 18

Catastrophic Hurricane...Catastrophic damage is expected from extremely devastating winds and large storm surge

Remnant Low

Post Tropical

< 39+

< 34+



A vigorous post-tropical cyclone that no longer possesses the convective organization required of a tropical cyclone

Remnant Low

Remnant Low

< 38

< 33



A post-tropical cyclone that no longer possesses the convective organization required of a tropical cyclone







No longer of interest, gone, finished.

*This is the normally expected Minimum Central Pressure for each category. Actual MCP can very greatly.

**This is the normally expected Storm Surge for each category. Like MCP, actual storm surge can very greatly.

2017 Hurricane Season Storm Timeline

2017 Season Milestones

Tropical Storm Alberto Alberto formed as a subtropical depression over the northwestern Caribbean Sea, became a subtropical storm over the southeastern Gulf of Mexico, and then transformed into a tropical storm before making landfall along the coast of the Florida Panhandle. Alberto continued inland as a tropical depression well north into Michigan and produced heavy rainfall and flooding across the southern and central Appalachian Mountains.

Eight direct deaths occurred from Alberto in the United States—five in North Carolina and three in Virginia. A reporter and a photojournalist from WYFF News 4, the NBC affiliate in Greenville, South Carolina, died when a tree fell on their SUV in Polk County, North Carolina. A woman in Polk County also died due to a mudslide at her home near Tryon, and two people died when a landslide caused a gas leak and explosion at their home near Boone, North Carolina. In Virginia, two people were swept away and died in floodwaters near Charlottesville in Albemarle County, and a third person died from flooding in Madison County.

The NOAA National Centers for Environmental Information (NCEI) estimates that wind and water damages from Alberto totaled around $125 million. Winds knocked down trees and caused some power outages across portions of the Florida Panhandle, but otherwise there was no significant wind damage where Alberto made landfall. Coastal flooding from storm surge was reported in Taylor, Wakulla, and Franklin Counties in Florida, with up to 2.5 ft of inundation occurring along Apalachee Bay near the fort in St. Marks and near Mashes Sands Beach.

Tropical Cyclone Report For Tropical Storm Alberto

Hurricane Beryl Beryl was an unusual, but not unique, small-sized hurricane that developed in the tropical Atlantic between Africa and the Lesser Antilles. Beryl dissipated on July 9th then re-formed into a Sub Tropical Storm on July 14th before dissipating for good July 15th.

While there were no reports of damage or casualties associated with Beryl, more than 47,000 customers in Puerto Rico briefly lost electricity due to squally weather associated with the remnants of Beryl. Power outages also were reported on the U.S. Virgin Island of St. Croix, where officials ordered closure of schools and government offices. The National Weather Service indicated that 1 to 5 inches of rain fell across Puerto Rico and the island experienced sustained winds of 25 to 30 kt. Several landslides were reported.

Tropical Cyclone Report For Hurricane Beryl

Hurricane Chris Chris moved slowly offshore of the east coast of the United States as a tropical storm for a few days before intensifying to a category two hurricane as it headed northeastward out of sea.

There were no reports of damage associated with Hurricane Chris. Although Chris stayed offshore, the slow motion of the cyclone caused large swells along many parts of the U.S. East Coast, which were enhanced by strong northeasterly synoptic-scale flow. One direct2 drowning death from rough surf was noted in the coastal waters near Kill Devil Hills, North Carolina. At least 20 water rescues were reported by Ocean Rescue in that town, dozens were reported along the New Jersey coast, and 225 rescues were reported by Ocean City.

Tropical Cyclone Report For Hurricane Chris

Tropical Storm Debby made a transition from an extratropical cyclone to a subtropical storm, and eventually became a high-latitude tropical storm, while remaining out at sea.

There were no reports of damage or casualties associated with Debby.

Tropical Cyclone Report For Tropical Storm Debby

Tropical Storm Ernesto had a non-tropical origin and a short life span over the North Atlantic.

There were no reports of damage or casualties associated with Ernesto.

Tropical Cyclone Report For Tropical Storm Ernesto

Major Hurricane Florence

Awaiting reports of damage or casualties associated with Major Hurricane Florence.

Tropical Cyclone Report For Major Hurricane Florence

Tropical Storm Gordon formed near the southeastern coast of Florida, moved across the Florida Keys and extreme southwestern Florida, and made a final landfall as a strong tropical storm along the north-central Gulf of Mexico coast just west of the Mississippi-Alabama border.

According to media reports, Gordon was responsible for one direct death while it was a tropical cyclone. A 2-year-old girl perished when strong winds caused a tree to fall on a mobile home that she was in near Pensacola, Florida. Heavy rainfall in Missouri and Kentucky produced by an extra-tropical low that included the remnant moisture from Gordon caused flash flooding that was responsible for three deaths. A 40-year-old man drowned when his vehicle stalled in flood waters beneath a railroad overpass in Louisville, Kentucky, and a 9-year-old boy drowned after he was swept away by floodwaters in Morehead, Kentucky. In Greene County, Missouri, a Sheriff’s deputy died after his patrol car was washed off a road into a nearby river.

Gordon produced moderate damage across portions of the northern Gulf coast. In Alabama, some homes on Dauphin Island experienced roof and siding damage. In Pensacola, Florida, a pier sustained minor damage, and numerous trees were downed across portions of southern Mississippi, Alabama, and the western Florida panhandle. Some of these falling trees caused damage to homes and other property. Beach erosion was reported in the Fort Pickens area in Escambia County, Florida. At one point 27,000 customers were without power, mainly in southern Alabama and the western portion of the Florida Panhandle. Flooding from heavy rainfall resulted in two high-water rescues in a neighborhood in the town of Cantonment, Florida. In South Florida and the Keys, only minor damage was reported. There were a few downed power lines in Broward and Miami-Dade counties, which resulted in the loss of power to about 8,000 customers in those counties.

Tropical Cyclone Report For Tropical Storm Gordon

Tropical Storm Helene passed south of the Cabo Verde Islands as a tropical storm before it strengthened into a category two hurricane (on the Saffir-Simpson Hurricane Wind Scale). Helene recurved over the eastern Atlantic and passed near the western islands of the Azores as a tropical storm.

There were no reports of damage or casualties associated with Hurricane Helene.

Tropical Cyclone Report For Hurricane Helene

Hurricane Isaac was a category 1 hurricane that formed over the east-central tropical Atlantic and moved westward. The cyclone weakened and passed through the Lesser Antilles as a tropical storm, causing locally heavy rain and flooding.

There were no reports of deaths associated with Isaac. Locally heavy rain and high surf caused some impacts in the Lesser Antilles, particularly on the island of St. Lucia where local media reported flooding in parts of Anse La Raye and Castries and trees down in the Barre de L´isle area. Minor landslides and flooding were also noted in media reports from the island of Dominica.

Tropical Cyclone Report For Hurricane Isaac

Tropical Storm Joyce evolved from an extra-tropical low to a subtropical storm and then to a tropical storm, meandering over the north-central Atlantic Ocean well to the southwest of the Azores.

There were no reports of damage or casualties associated with Joyce.

Tropical Cyclone Report For Tropical Storm Joyce

Tropical Storm Kirk formed in the eastern tropical Atlantic at an unusually low latitude before opening up into a tropical wave only a day later. Eventually the wave reformed into a tropical cyclone and made landfall on St. Lucia as a moderately strong tropical storm before dissipating over the eastern Caribbean Sea.

There were no deaths reported in association with Kirk. Very heavy rains (in excess of 10 inches) caused severe street flooding and power outages in Barbados, with several people rescued from floods on that island. However, no estimates of damage are available.

Tropical Cyclone Report For Tropical Storm Kirk

Hurricane Leslie.

There were no reports of damage or casualties associated with Hurricane Leslie.

Tropical Cyclone Report For Hurricane Leslie

Michael was upgraded post-season to a category 5 hurricane when the storm made a catastrophic landfall near Mexico Beach and Tyndall Air Force Base, Florida, producing devastating winds and storm surge near the coast, and rain and wind inland. It was directly responsible for 16 deaths and about $25 billion in damage in the United States. Before hitting the United States, the cyclone brought hurricane-force winds to the western tip of Cuba when it was a category 2 hurricane.

The winds, storm surge, and rains of the hurricane directly caused 16 deaths: 7 in Florida, 5 in Virginia, 3 in North Carolina, and 1 in Georgia. In Florida, five people drowned due to storm surge - three in or near Mexico Beach (Bay County), one between Mexico Beach and Port St. Joe (Gulf County), and one near East Bay in the eastern side of the Panama City area (Bay County). The victims of the surge were all elderly with the ages ranging from 60–91 years, and all of these fatalities occurred in storm surge evacuation zones.

Two people died inland in Florida due to falling trees during the storm, one in Quincy in Gadsden County and one in Alford in Jackson County. The deaths in Georgia (near Lake Seminole in Seminole County) and North Carolina (near Statesville in Iredell County) were also due to falling trees. In Virginia, five people died due to freshwater flooding, including two near Danville, two in Charlotte County, one near Richmond, and one near Mount Hermon. Michael was associated with 43 currently-known indirect deaths, all in Florida.

The causes of the indirect deaths included falls during the post-storm clean up, traffic accidents, and medical issues compounded by the hurricane. It should be noted that all of the casualty figures - both direct and indirect – will be revised, as needed, if new information becomes available. The hurricane caused no known casualties in western Cuba. However, the pre-cursor disturbance associated with Michael caused a prolonged period of rainfall over portions of Central America, which in turn caused significant freshwater flooding. Media reports indicate this flooding directly caused 15 deaths – 8 in Honduras, 4 in Nicaragua, and 3 in El Salvador.

Tropical Cyclone Report For Major Hurricane Arlene

Tropical Storm Nadine was a small tropical storm that remained over the eastern tropical Atlantic Ocean and did not directly affect any land areas

There were no reports of damage or casualties associated with Nadine.

Tropical Cyclone Report For Tropical Storm Nadine

Hurricane Oscar was a late-season category 2 hurricane that originated as a subtropical storm over the central Atlantic. Oscar passed well east of Bermuda before becoming a large and powerful extratropical low over the north Atlantic in early November.

There were no reports of damage or casualties associated with Hurricane Oscar.

Tropical Cyclone Report For Hurricane Oscar

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