The 1984 Atlantic hurricane season began on June 1st, 1984 and ended November 30th, 1984.
Seasonal forecasts[]
| Source | Date | Named
storms |
Hurricanes | Major
hurricanes | |
| NOAA | May 2, 1984 | 6 | 2 | 1 | |
| ––––––––––––––––––––––––––––––––––––––––––––––––––––––– | |||||
| Actual activity | 5 | 4 | 3 | ||
Season Summary[]
Storms[]
|
Hurricane Arthur[]
| Category 4 hurricane (SSHWS) | |
  | |
| Duration | July 31 – August 10 |
|---|---|
| Peak intensity | 140 mph (220 km/h) (1-min) 939 mbar (hPa) |
Hurricane Bertha[]
| Category 1 hurricane (SSHWS) | |
  | |
| Duration | August 14 – August 20 |
|---|---|
| Peak intensity | 80 mph (130 km/h) (1-min) 981 mbar (hPa) |
Tropical Depression Three[]
| Tropical depression (SSHWS) | |
  | |
| Duration | August 31 – September 2 |
|---|---|
| Peak intensity | 35 mph (55 km/h) (1-min) 1004 mbar (hPa) |
Hurricane Cesar[]
| Category 5 hurricane (SSHWS) | |
  | |
| Duration | September 10 – September 24 |
|---|---|
| Peak intensity | 160 mph (260 km/h) (1-min) 925 mbar (hPa) |
Tropical Storm Diana[]
| Tropical storm (SSHWS) | |
  | |
| Duration | September 30 – October 4 |
|---|---|
| Peak intensity | 65 mph (100 km/h) (1-min) 989 mbar (hPa) |
Hurricane Edouard[]
| Category 4 hurricane (SSHWS) | |
  | |
| Duration | October 31 – November 10 |
|---|---|
| Peak intensity | 145 mph (230 km/h) (1-min) 934 mbar (hPa) |
Tropical Depression Seven[]
| Tropical depression (SSHWS) | |
  | |
| Duration | December 24 – December 25 |
|---|---|
| Peak intensity | 35 mph (55 km/h) (1-min) 1003 mbar (hPa) |
Timeline[]
Storm names[]
The following names will be used to name tropical and subtropical cyclones in the 1984 season.
|
|
|
Accumulated Cyclone Energy (ACE) Rating[]
| ACE (104 kt2) – Storm: Source | |||||
|---|---|---|---|---|---|
| 1 | 30.0 | Cesar | 12 | 0.00 | Storm |
| 2 | 21.5 | Edouard | 13 | 0.00 | Storm |
| 3 | 20.0 | Arthur | 14 | 0.00 | Storm |
| 4 | 8.17 | Bertha | 15 | 0.00 | Storm |
| 5 | 5.49 | Diana | 16 | 0.00 | Storm |
| 6 | 0.00 | Storm | 17 | 0.00 | Storm |
| 7 | 0.00 | Storm | 18 | 0.00 | Storm |
| 8 | 0.00 | Storm | 19 | 0.00 | Storm |
| 9 | 0.00 | Storm | 20 | 0.00 | Storm |
| 10 | 0.00 | Storm | 21 | 0.00 | Storm |
| 11 | 0.00 | Storm | 22 | 0.00 | Storm |
| Total=85.16 | |||||
ACE is the result of a storm's winds multiplied by how long it lasted for, so storms or subtropical storms (Originally not included up until 2012) that at lasted a long time , as well as particularly strong hurricanes , have higher ACE totals. Tropical Depressions are not included in season total.
Season effects[]
This is a table of the storms and their effects in the 1987 Atlantic hurricane season. This table includes the storm's names, duration, peak intensity, Areas affected (bold indicates made landfall in that region at least once), damages, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but are still storm-related. Damage and deaths include totals while the storm was extratropical, a wave or a low. All of the damage figures are in 2015 USD (the listed damage figure is in millions).
| Storm name |
Dates active | Storm category at peak intensity |
Max 1-min wind mph (km/h) |
Min. press. (mbar) |
Areas affected | Damage (USD) |
Deaths |
|---|---|---|---|---|---|---|---|
| Arthur | July 31 – August 10 | Category 4 hurricane | 140 (220) | 939 | Mexico | 500 | 48 |
| Bertha | August 14 – August 20 | Category 1 hurricane | 80 (130) | 981 | Newfoundland, Nova Scotia | 10 | 5 |
| Three | August 31 – September 2 | Tropical depression | 35 (55) | 1004 | US East Coast (Florida) | 5 | 3 |
| Cesar | Septemer 10 – September 24 | Category 5 hurricane | 160 (260) | 925 | None | None | 0 |
| Diana | September 30 – October 4 | Tropical storm | 65 (100) | 989 | Azores | Minor | 0 |
| Edouard | October 31 – November 10 | Category 4 hurricane | 145 (230) | 934 | Bermuda | 10 | 4 |
| Seven | December 24 – December 25 | Tropical depression | 35 (55) | 1003 | None | 0 | 0 |