From Wikipedia, the free encyclopedia
This is the page for calculating the Accumulated Cyclone Energy for the 2015 Atlantic hurricane season . If any storms of a season happen to cross years, the storm's ACE counts for the previous year.[ 1]
The ACE is calculated by summing the squares of the estimated maximum sustained velocity of every active tropical storm (wind speed 35 knots or higher), at six-hour intervals. The numbers are divided by 10,000 to make them more manageable. The unit of ACE is 104 kt2 , and for use as an index the unit is assumed.
∑
v
m
a
x
2
10
4
,
{\displaystyle \sum _{}^{}{\frac {{v_{\mathrm {max} }}^{2}}{10^{4}}},}
where v max is estimated sustained wind speed in knots.
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 7 May
11 pm EDT
40
0.1600
2 8 May
5 am EDT
40
0.1600
3 8 May
11 am EDT
40
0.1600
4 8 May
5 pm EDT
40
0.1600
5 8 May
11 pm EDT
50
0.2500
6 9 May
5 am EDT
50
0.2500
7 9 May
11 am EDT
50
0.2500
8 9 May
5 pm EDT
50
0.2500
9 9 May
11 pm EDT
50
0.2500
10 10 May
5 am EDT
40
0.1600
11 10 May
11 am EDT
35
0.1225
12 10 May
5 pm EDT
30
0
Total
2.1725
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 15 June
10 pm CDT
45
0.2025
2 16 June
4 am CDT
45
0.2025
3 16 June
10 am CDT
50
0.2500
4 16 June
4 pm CDT
45
0.2025
5 16 June
10 pm CDT
35
0.1225
6 17 June
4 am CDT
30
0
7 17 June
10 am CDT
30
0
8 17 June
4 pm CDT
25
0
9 17 June
10 pm CDT
25
0
10 18 June
4 am CDT
20
0
11 18 June
10 am CDT
20
0
12 18 June
4 pm CDT
15
0
13 18 June
10 pm CDT
15
0
14 19 June
4 am CDT
15
0
15 19 June
10 am CDT
20
0
16 19 June
4 pm CDT
20
0
17 19 June
10 pm CDT
15
0
18 20 June
4 am CDT
15
0
19 20 June
10 am CDT
15
0
20 20 June
4 pm CDT
15
Post-trop.
Total
0.98
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 13 July
1 pm AST
45
Special
2 13 July
5 pm AST
45
0.2025
3 13 July
11 pm AST
45
0.2025
4 14 July
5 am AST
40
0.1600
5 14 July
11 am AST
35
0.1225
6 14 July
5 pm AST
40
0.1600
7 14 July
11 pm AST
40
Post-trop.
Total
0.8475
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 18 August
11 am AST
30
0
2 18 August
5 pm AST
35
0.1225
3 18 August
11 pm AST
45
0.2025
4 19 August
5 am AST
45
0.2025
5 19 August
11 am AST
45
0.2025
6 19 August
5 pm AST
45
0.2025
7 19 August
11 pm AST
45
0.2025
8 20 August
5 am AST
45
0.2025
9 20 August
11 am AST
65
0.4225
10 20 August
5 pm AST
70
0.4900
11 20 August
11 pm AST
70
0.4900
12 21 August
5 am AST
75
0.5625
13 21 August
11 am AST
90
0.8100
14 21 August
5 pm AST
100
1.0000
15 21 August
11 pm AST
95
0.9025
16 22 August
5 am AST
85
0.7225
17 22 August
11 am AST
80
0.6400
18 22 August
5 pm AST
65
0.4225
19 22 August
11 pm AST
50
0.2500
20 23 August
5 am AST
45
0.2025
21 23 August
11 am AST
45
0.2025
22 23 August
5 pm AST
35
0.1225
23 23 August
11 pm AST
35
0.1225
24 24 August
5 am AST
35
0.1225
25 24 August
11 am AST
25
Dissipated
Total
8.8225
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 24 August
11 pm AST
40
0.1600
2 25 August
5 am AST
40
0.1600
3 25 August
11 am AST
40
0.1600
4 25 August
5 pm AST
35
0.1225
5 25 August
11 pm AST
35
0.1225
6 26 August
5 am AST
35
0.1225
7 26 August
11 am AST
40
0.1600
8 26 August
5 pm AST
40
0.1600
9 26 August
11 pm AST
40
0.1600
10 27 August
5 am AST
45
0.2025
11 27 August
11 am AST
45
0.2025
12 27 August
5 pm AST
40
0.1600
13 27 August
11 pm AST
40
0.1600
14 28 August
5 am AST
45
0.2025
15 28 August
11 am AST
45
0.2025
16 28 August
5 pm AST
45
0.2025
17 28 August
11 pm AST
40
0.1600
18 29 August
5 am AST
35
0.1225
19 29 August
11 am AST
30
Dissipated
Total
2.9425
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 30 August
1:30 am AST
30
Special
2 30 August
5 am AST
35
0.1225
3 30 August
11 am AST
45
0.2025
4 30 August
5 pm AST
55
0.3025
5 30 August
11 pm AST
60
0.3600
6 31 August
5 am AST
70
0.4900
7 31 August
11 am AST
75
0.5625
8 31 August
5 pm AST
70
0.4900
9 31 August
11 pm AST
60
0.3600
10 1 September
5 am AST
55
0.3025
11 1 September
11 am AST
45
0.2025
12 1 September
5 pm AST
45
0.2025
13 1 September
11 pm AST
45
0.2025
14 2 September
5 am AST
40
0.1600
15 2 September
11 am AST
40
0.1600
16 2 September
5 pm AST
35
0.1225
17 2 September
11 pm AST
35
0.1225
18 3 September
5 am AST
40
0.1600
19 3 September
11 am AST
35
0.1225
20 3 September
5 pm AST
35
0.1225
21 3 September
11 pm AST
35
0.1225
22 4 September
5 am AST
35
0.1225
23 4 September
11 am AST
30
0
24 4 September
5 pm AST
30
0
25 4 September
11 pm AST
35
0.1225
26 5 September
5 am AST
35
0.1225
27 5 September
11 am AST
35
0.1225
28 5 September
5 pm AST
30
0
29 5 September
11 pm AST
30
0
30 6 September
5 am AST
30
0
31 6 September
11 am AST
30
0
Total
5.3825
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 5 September
11 am AST
30
0
2 5 September
5 pm AST
35
0.1225
3 5 September
11 pm AST
35
0.1225
4 6 September
5 am AST
40
0.1600
5 6 September
11 am AST
40
0.1600
6 6 September
5 pm AST
45
0.2025
7 6 September
11 pm AST
45
0.2025
8 7 September
5 am AST
45
0.2025
9 7 September
11 am AST
40
0.1600
10 7 September
5 pm AST
40
0.1600
11 7 September
11 pm AST
35
0.1225
12 8 September
5 am AST
35
0.1225
13 8 September
11 am AST
30
0
Total
1.7375
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 9 September
12:30 am AST
30
Special
2 9 September
5 am AST
30
0
3 9 September
11 am AST
30
0
4 9 September
5 pm AST
30
0
5 9 September
11 pm AST
35
0.1225
6 10 September
5 am AST
35
0.1225
7 10 September
11 am AST
35
0.1225
8 10 September
5 pm AST
35
0.1225
9 10 September
11 pm AST
35
0.1225
10 11 September
5 am AST
35
0.1225
11 11 September
11 am AST
35
0.1225
Total
0.8575
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 18 September
11 am AST
25
0
2 18 September
5 pm AST
30
0
3 18 September
11 pm AST
35
0.1225
4 19 September
5 am AST
35
0.1225
5 19 September
11 am AST
35
0.1225
6 19 September
5 pm AST
35
0.1225
7 19 September
11 pm AST
35
0.1225
8 20 September
5 am AST
35
0.1225
9 20 September
11 am AST
40
0.1600
10 20 September
5 pm AST
40
0.1600
11 20 September
11 pm AST
40
0.1600
12 21 September
5 am AST
45
0.2025
13 21 September
11 am AST
45
0.2025
14 21 September
5 pm AST
45
0.2025
15 21 September
11 pm AST
40
0.1600
16 22 September
5 am AST
40
0.1600
17 22 September
11 am AST
40
0.1600
18 22 September
5 pm AST
40
0.1600
19 22 September
11 pm AST
35
0.1225
20 23 September
5 am AST
35
0.1225
21 23 September
11 am AST
35
0.1225
22 23 September
5 pm AST
35
0.1225
23 23 September
11 pm AST
35
0.1225
24 24 September
5 am AST
35
0.1225
25 24 September
11 am AST
30
0
26 24 September
5 pm AST
30
0
27 24 September
11 pm AST
30
0
28 25 September
5 am AST
30
0
29 25 September
11 am AST
25
0
30 25 September
5 pm AST
25
0
31 25 September
11 pm AST
30
0
32 26 September
5 am AST
30
0
33 26 September
11 am AST
30
0
34 26 September
5 pm AST
30
0
35 26 September
11 pm AST
30
0
36 27 September
5 am AST
25
0
37 27 September
11 am AST
25
0
38 27 September
5 pm AST
25
Low
Total
3.1975
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 27 September
11 pm EDT
30
0
2 28 September
5 am EDT
30
0
3 28 September
11 am EDT
30
0
4 28 September
5 pm EDT
30
0
5 28 September
11 pm EDT
35
0.1225
6 29 September
5 am EDT
35
0.1225
7 29 September
11 am EDT
40
0.1600
8 29 September
5 pm EDT
55
0.3025
9 29 September
11 pm EDT
60
0.3600
10 30 September
5 am EDT
60
0.3600
11 30 September
11 am EDT
70
0.4900
12 30 September
5 pm EDT
75
0.5625
13 30 September
11 pm EDT
100
1.0000
14 1 October
5 am EDT
105
1.1025
15 1 October
11 am EDT
110
1.2100
16 1 October
5 pm EDT
115
1.3225
17 1 October
11 pm EDT
115
1.3225
18 2 October
5 am EDT
115
1.3225
19 2 October
11 am EDT
115
1.3225
20 2 October
5 pm EDT
110
1.2100
21 2 October
11 pm EDT
110
1.2100
22 3 October
5 am EDT
110
1.2100
23 3 October
11 am EDT
115
1.3225
24 3 October
12 pm EDT
135
Special
25 3 October
5 pm EDT
130
1.6900
26 3 October
11 pm EDT
115
1.3225
27 4 October
5 am EDT
105
1.1025
28 4 October
11 am EDT
95
0.9025
29 4 October
5 pm EDT
85
0.7225
30 4 October
11 pm EDT
75
0.5625
31 5 October
5 am EDT
75
0.5625
32 5 October
11 am EDT
75
0.5625
33 5 October
5 pm EDT
75
0.5625
34 5 October
11 pm EDT
75
0.5625
35 6 October
5 am EDT
75
0.5625
36 6 October
11 am EDT
70
0.4900
37 6 October
5 pm EDT
70
0.4900
38 6 October
11 pm EDT
70
0.4900
39 7 October
5 am EDT
65
0.4225
40 7 October
11 am EDT
60
0.3600
41 7 October
5 pm EDT
60
0.3600
Total
27.7625
Adv.
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
1 8 November
10 pm EST
30
0
2 9 November
4 am EST
30
0
3 9 November
10 am EST
40
0.1600
4 9 November
4 pm EST
40
0.1600
5 9 November
10 pm EST
50
0.2500
6 10 November
4 am EST
50
0.2500
7 10 November
10 am EST
60
0.3600
8 10 November
4 pm EST
60
0.3600
9 10 November
11 pm AST
60
0.3600
10 11 November
5 am AST
65
0.4225
11 11 November
11 am AST
65
0.4225
12 11 November
5 am AST
65
0.4225
13 11 November
11 pm AST
60
0.3600
Total
3.5275
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
8 May
0000 UTC
40
0.1600
8 May
0600 UTC
40
0.1600
8 May
1200 UTC
40
0.1600
8 May
1800 UTC
45
0.2025
9 May
0000 UTC
50
0.2500
9 May
0600 UTC
50
0.2500
9 May
1200 UTC
50
0.2500
9 May
1800 UTC
45
0.2025
10 May
0000 UTC
45
0.2025
10 May
0600 UTC
40
0.1600
10 May
1200 UTC
35
0.1225
10 May
1800 UTC
30
0
11 May
0000 UTC
30
0
11 May
0600 UTC
30
0
11 May
1200 UTC
30
0
11 May
1800 UTC
30
0
12 May
0000 UTC
30
Low
Total
2.12
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
16 June
0000 UTC
45
0.2025
16 June
0600 UTC
45
0.2025
16 June
1200 UTC
50
0.2500
16 June
1645 UTC
50
Special
16 June
1800 UTC
50
0.2500
17 June
0000 UTC
40
0.1600
17 June
0600 UTC
30
0
17 June
1200 UTC
30
0
17 June
1800 UTC
25
0
18 June
0000 UTC
25
0
18 June
0600 UTC
25
0
18 June
1200 UTC
20
0
18 June
1800 UTC
15
Low
Total
1.065
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
13 July
0600 UTC
30
0
13 July
1200 UTC
40
0.1600
13 July
1800 UTC
45
0.2025
14 July
0000 UTC
45
0.2025
14 July
0600 UTC
45
0.2025
14 July
1200 UTC
45
0.2025
14 July
1800 UTC
40
0.1600
15 July
0000 UTC
35
Low
Total
1.13
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
18 August
0600 UTC
30
0
18 August
1200 UTC
35
0.1225
18 August
1800 UTC
40
0.1600
19 August
0000 UTC
45
0.2025
19 August
0600 UTC
45
0.2025
19 August
1200 UTC
45
0.2025
19 August
1800 UTC
50
0.2500
20 August
0000 UTC
55
0.3025
20 August
0600 UTC
60
0.3600
20 August
1200 UTC
65
0.4225
20 August
1800 UTC
75
0.5625
21 August
0000 UTC
85
0.7225
21 August
0600 UTC
95
0.9025
21 August
1200 UTC
110
1.2100
21 August
1800 UTC
105
1.1025
22 August
0000 UTC
95
0.9025
22 August
0600 UTC
85
0.7225
22 August
1200 UTC
75
0.5625
22 August
1800 UTC
65
0.4225
23 August
0000 UTC
55
0.3025
23 August
0600 UTC
50
0.2500
23 August
1200 UTC
45
0.2025
23 August
1800 UTC
40
0.1600
24 August
0000 UTC
40
0.1600
24 August
0600 UTC
35
0.1225
24 August
1200 UTC
30
0
Total
10.5325
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
24 August
1800 UTC
40
0.1600
25 August
0000 UTC
40
0.1600
25 August
0600 UTC
40
0.1600
25 August
1200 UTC
40
0.1600
25 August
1800 UTC
35
0.1225
26 August
0000 UTC
35
0.1225
26 August
0600 UTC
35
0.1225
26 August
1200 UTC
40
0.1600
26 August
1800 UTC
40
0.1600
27 August
0000 UTC
40
0.1600
27 August
0600 UTC
45
0.2025
27 August
1200 UTC
45
0.2025
27 August
1800 UTC
45
0.2025
28 August
0000 UTC
45
0.2025
28 August
0600 UTC
45
0.2025
28 August
1200 UTC
45
0.2025
28 August
1800 UTC
Dissipated
Total
2.7025
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
30 August
0000 UTC
30
0
30 August
0600 UTC
35
0.1225
30 August
1200 UTC
45
0.2025
30 August
1800 UTC
55
0.3025
31 August
0000 UTC
65
0.4225
31 August
0600 UTC
70
0.4900
31 August
1200 UTC
75
0.5625
31 August
1800 UTC
70
0.4900
1 September
0000 UTC
65
0.4225
1 September
0600 UTC
60
0.3600
1 September
1200 UTC
50
0.2500
1 September
1800 UTC
45
0.2025
2 September
0000 UTC
45
0.2025
2 September
0600 UTC
40
0.1600
2 September
1200 UTC
40
0.1600
2 September
1800 UTC
35
0.1225
3 September
0000 UTC
35
0.1225
3 September
0600 UTC
40
0.1600
3 September
1200 UTC
40
0.1600
3 September
1800 UTC
35
0.1225
4 September
0000 UTC
35
0.1225
4 September
0600 UTC
35
0.1225
4 September
1200 UTC
30
0
4 September
1800 UTC
30
0
5 September
0000 UTC
35
0.1225
5 September
0600 UTC
35
0.1225
5 September
1200 UTC
30
0
5 September
1800 UTC
30
0
6 September
0000 UTC
30
0
6 September
0600 UTC
30
0
6 September
1200 UTC
25
0
Total
5.5275
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
5 September
0600 UTC
25
0
5 September
1200 UTC
30
0
5 September
1800 UTC
35
0.1225
6 September
0000 UTC
40
0.1600
6 September
0600 UTC
45
0.2025
6 September
1200 UTC
50
0.2500
6 September
1800 UTC
45
0.2025
7 September
0000 UTC
45
0.2025
7 September
0600 UTC
45
0.2025
7 September
1200 UTC
40
0.1600
7 September
1800 UTC
40
0.1600
8 September
0000 UTC
35
0.1225
8 September
0600 UTC
35
0.1225
8 September
1200 UTC
30
0
8 September
1800 UTC
30
0
9 September
0000 UTC
25
0
9 September
0600 UTC
25
0
Total
1.9075
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
8 September
1800 UTC
30
0
9 September
0000 UTC
35
0.1225
9 September
0600 UTC
35
0.1225
9 September
1200 UTC
40
0.1600
9 September
1800 UTC
45
0.2025
10 September
0000 UTC
45
0.2025
10 September
0600 UTC
45
0.2025
10 September
1200 UTC
40
0.1600
10 September
1800 UTC
40
0.1600
11 September
0000 UTC
40
0.1600
11 September
0600 UTC
40
0.1600
11 September
1200 UTC
Dissipated
Total
1.6525
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
18 September
0600 UTC
25
0
18 September
1200 UTC
25
0
18 September
1800 UTC
30
0
19 September
0000 UTC
35
0.1225
19 September
0600 UTC
35
0.1225
19 September
1200 UTC
35
0.1225
19 September
1800 UTC
35
0.1225
20 September
0000 UTC
40
0.1600
20 September
0600 UTC
40
0.1600
20 September
1200 UTC
40
0.1600
20 September
1800 UTC
40
0.1600
21 September
0000 UTC
40
0.1600
21 September
0600 UTC
45
0.2025
21 September
1200 UTC
45
0.2025
21 September
1800 UTC
45
0.2025
22 September
0000 UTC
40
0.1600
22 September
0600 UTC
40
0.1600
22 September
1200 UTC
40
0.1600
22 September
1800 UTC
40
0.1600
23 September
0000 UTC
35
0.1225
23 September
0600 UTC
35
0.1225
23 September
1200 UTC
35
0.1225
23 September
1800 UTC
35
0.1225
24 September
0000 UTC
35
0.1225
24 September
0600 UTC
30
0
24 September
1200 UTC
30
0
24 September
1800 UTC
30
0
25 September
0000 UTC
30
0
25 September
0600 UTC
30
0
25 September
1200 UTC
30
0
25 September
1800 UTC
30
0
26 September
0000 UTC
30
0
26 September
0600 UTC
30
0
26 September
1200 UTC
30
0
26 September
1800 UTC
30
0
27 September
0000 UTC
30
0
27 September
0600 UTC
25
0
27 September
1200 UTC
25
Low
Total
3.15
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
28 September
0000 UTC
30
0
28 September
0600 UTC
30
0
28 September
1200 UTC
30
0
28 September
1800 UTC
30
0
29 September
0000 UTC
35
0.1225
29 September
0600 UTC
35
0.1225
29 September
1200 UTC
45
0.2025
29 September
1800 UTC
55
0.3025
30 September
0000 UTC
60
0.3600
30 September
0600 UTC
65
0.4225
30 September
1200 UTC
70
0.4900
30 September
1800 UTC
80
0.6400
1 October
0000 UTC
100
1.0000
1 October
0600 UTC
110
1.2100
1 October
1200 UTC
115
1.3225
1 October
1800 UTC
115
1.3225
2 October
0000 UTC
120
1.4400
2 October
0600 UTC
120
1.4400
2 October
1200 UTC
115
1.3225
2 October
1800 UTC
110
1.2100
3 October
0000 UTC
115
1.3225
3 October
0600 UTC
120
1.4400
3 October
1200 UTC
135
1.8225
3 October
1800 UTC
130
1.6900
4 October
0000 UTC
115
1.3225
4 October
0600 UTC
105
1.1025
4 October
1200 UTC
95
0.9025
4 October
1800 UTC
85
0.7225
5 October
0000 UTC
75
0.5625
5 October
0600 UTC
75
0.5625
5 October
1200 UTC
75
0.5625
5 October
1800 UTC
75
0.5625
6 October
0000 UTC
75
0.5625
6 October
0600 UTC
75
0.5625
6 October
1200 UTC
70
0.4900
6 October
1800 UTC
70
0.4900
7 October
0000 UTC
70
0.4900
7 October
0600 UTC
65
0.4225
7 October
1200 UTC
60
0.3600
7 October
1800 UTC
60
0.3600
8 October
0000 UTC
55
Low
Total
29.2425
Date
Time
Maximum Sustained Winds (kt)
ACE (104 kt2 )
8 November
1800 UTC
30
0
9 November
0000 UTC
30
0
9 November
0600 UTC
35
0.1225
9 November
1200 UTC
40
0.1600
9 November
1800 UTC
45
0.2025
10 November
0000 UTC
50
0.2500
10 November
0600 UTC
55
0.3025
10 November
1200 UTC
60
0.3600
10 November
1800 UTC
60
0.3600
11 November
0000 UTC
65
0.4225
11 November
0600 UTC
70
0.4900
11 November
1200 UTC
75
0.5625
11 November
1800 UTC
65
0.4225
12 November
0000 UTC
65
Extratropical
Total
3.655
Storm Type ACE (104 kt2 ) 01L (Ana) Best Track 2.1200 02L (Bill) Best Track 1.0650 03L (Claudette) Best Track 1.1300 04L (Danny) Best Track 10.5325 05L (Erika) Best Track 2.7025 06L (Fred) Best Track 5.5275 07L (Grace) Best Track 1.9075 08L (Henri) Best Track 1.6525 10L (Ida) Best Track 3.1500 11L (Joaquin) Best Track 29.2425 12L (Kate) Best Track 3.6550 Total 62.685
