Talk:2006 Atlantic hurricane season/ACE calcs

This is the page for calculating the Accumulated Cyclone Energy for the 2006 Atlantic hurricane season.

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 usually 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. If any storms of a season happen to cross years, the storm's ACE counts for the previous year.

$\sum _{}^{}{\frac {{v_{\mathrm {max} }}^{2}}{10^{4}}},$

where v_max is estimated sustained wind speed in knots.

The Tropical Cyclone Report (TCR) "Best Track" data (produced after the storm) overrides the estimated wind speeds given by the operational advisories (produced during the storm).

Operational (Advisories)

01L.Alberto

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
1	10 June	8 am CDT	30	Special
2	10 June	11 am EDT	30	0
3	10 June	5 pm EDT	30	0
4	10 June	11 pm EDT	30	0
5	11 June	5 am EDT	30	0
6	11 June	11 am EDT	40	0.1600
7	11 June	5 pm EDT	40	0.1600
8	11 June	11 pm EDT	40	0.1600
9	12 June	5 am EDT	45	0.2025
10	12 June	11 am EDT	60	0.3600
11	12 June	5 pm EDT	60	0.3600
12	12 June	11 pm EDT	60	0.3600
13	13 June	5 am EDT	55	0.3025
14	13 June	11 am EDT	45	0.2025
15	13 June	5 pm EDT	35	0.1225
16	13 June	11 pm EDT	35	0.1225
17	14 June	5 am EDT	30	0
18	14 June	11 am EDT	30	0
Total				2.5125

02L.Beryl

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
1	18 July	11 am EDT	30	0
2	18 July	5 pm EDT	35	0.1225
3	18 July	11 pm EDT	35	0.1225
4	19 July	5 am EDT	35	0.1225
5	19 July	11 am EDT	40	0.1600
6	19 July	5 pm EDT	50	0.2500
7	19 July	11 pm EDT	50	0.2500
8	20 July	5 am EDT	50	0.2500
9	20 July	11 am EDT	50	0.2500
10	20 July	5 pm EDT	45	0.2025
11	20 July	11 pm EDT	45	0.2025
12	21 July	5 am EDT	45	0.2025
13	21 July	11 am EDT	40	0.1600
Total				2.2950

03L.Chris

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
1	31 July	11 pm EDT	30	0
2	1 August	5 am EDT	35	0.1225
3	1 August	11 am EDT	35	0.1225
4	1 August	5 pm EDT	40	0.1600
5	1 August	5:30 pm EDT	50	Special
6	1 August	11 pm EDT	50	0.2500
7	2 August	5 am EDT	50	0.2500
8	2 August	11 am EDT	55	0.3025
9	2 August	5 pm EDT	50	0.2500
10	2 August	11 pm EDT	50	0.2500
11	3 August	5 am EDT	40	0.1600
12	3 August	11 am EDT	35	0.1225
13	3 August	5 pm EDT	35	0.1225
14	3 August	11 pm EDT	35	0.1225
15	4 August	5 am EDT	35	0.1225
16	4 August	11 am EDT	30	0
17	4 August	5 pm EDT	30	0
18	4 August	11 pm EDT	25	0
19	5 August	5 am EDT	20	0
Total				2.3575

04L.Debby

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
1	21 August	5 pm EDT	30	0
2	21 August	11 pm EDT	30	0
3	22 August	5 am EDT	30	0
4	22 August	11 am EDT	30	0
5	22 August	5 pm EDT	30	0
6	22 August	11 pm EDT	35	0.1225
7	23 August	5 am EDT	40	0.1600
8	23 August	11 am EDT	45	0.2025
9	23 August	5 pm EDT	40	0.1600
10	23 August	11 pm EDT	40	0.1600
11	24 August	5 am EDT	40	0.1600
12	24 August	11 am EDT	45	0.2025
13	24 August	5 pm EDT	45	0.2025
14	24 August	11 pm EDT	45	0.2025
15	25 August	5 am EDT	45	0.2025
16	25 August	11 am EDT	35	0.1225
17	25 August	5 pm EDT	35	0.1225
18	25 August	11 pm EDT	35	0.1225
19	26 August	5 am EDT	30	0
20	26 August	11 am EDT	25	0
21	26 August	5 pm EDT	25	0
22	26 August	11 pm EDT	25	0
23	27 August	5 am EDT	25	0
24	27 August	11 am EDT	25	0
25	27 August	5 pm EDT	25	0
Total				2.1425

05L.Ernesto

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
1	24 August	5 pm EDT	30	0
2	24 August	11 pm EDT	30	0
3	25 August	5 am EDT	30	0
4	25 August	11 am EDT	30	0
5	25 August	5 pm EDT	35	0.1225
6	25 August	11 pm EDT	40	0.1600
7	26 August	5 am EDT	40	0.1600
8	26 August	11 am EDT	45	0.2025
9	26 August	5 pm EDT	50	0.2500
10	26 August	11 pm EDT	50	0.2500
11	27 August	5 am EDT	60	0.3600
12	27 August	11 am EDT	65	0.4225
13	27 August	5 pm EDT	50	0.2500
14	27 August	11 pm EDT	45	0.2025
15	28 August	5 am EDT	45	0.2025
16	28 August	11 am EDT	35	0.1225
17	28 August	5 pm EDT	35	0.1225
18	28 August	11 pm EDT	35	0.1225
19	29 August	5 am EDT	40	0.1600
20	29 August	11 am EDT	40	0.1600
21	29 August	5 pm EDT	40	0.1600
22	29 August	11 pm EDT	40	0.1600
23	30 August	5 am EDT	40	0.1600
24	30 August	11 am EDT	30	0
25	30 August	5 pm EDT	30	0
26	30 August	11 pm EDT	30	0
27	31 August	5 am EDT	45	0.2025
28	31 August	11 am EDT	50	0.2500
29	31 August	5 pm EDT	60	0.3600
30	31 August	11 pm EDT	60	0.3600
31	1 Sept.	5 am EDT	50	0.2500
32	1 Sept.	11 am EDT	30	0
Total				5.1725

06L.Florence

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
1	3 September	5 pm EDT	30	0
2	3 September	11 pm EDT	30	0
3	4 September	5 am EDT	30	0
4	4 September	11 am EDT	30	0
5	4 September	5 pm EDT	30	0
6	4 September	11 pm EDT	30	0
7	5 September	5 am EDT	30	0
8	5 September	11 am EDT	35	0.1225
9	5 September	5 pm EDT	40	0.1600
10	5 September	11 pm EDT	40	0.1600
11	6 September	5 am EDT	40	0.1600
12	6 September	11 am EDT	45	0.2025
13	6 September	5 pm EDT	45	0.2025
14	6 September	11 pm EDT	45	0.2025
15	7 September	5 am EDT	45	0.2025
16	7 September	11 am EDT	45	0.2025
17	7 September	5 pm EDT	45	0.2025
18	7 September	11 pm EDT	45	0.2025
19	8 September	5 am EDT	45	0.2025
20	8 September	11 am EDT	45	0.2025
21	8 September	5 pm EDT	45	0.2025
22	8 September	11 pm EDT	55	0.3025
23	9 September	5 am EDT	55	0.3025
24	9 September	11 am EDT	60	0.3600
25	9 September	5 pm EDT	55	0.3025
26	9 September	11 pm EDT	55	0.3025
27	10 September	5 am EDT	70	0.4900
28	10 September	11 am EDT	70	0.4900
29	10 September	5 pm EDT	80	0.6400
30	10 September	11 pm EDT	80	0.6400
31	11 September	5 am EDT	70	0.4900
32	11 September	11 am EDT	80	0.6400
33	11 September	5 pm EDT	80	0.6400
34	11 September	11 pm EDT	75	0.5625
35	12 September	5 am EDT	65	0.4225
36	12 September	11 am EDT	65	0.4225
37	12 September	5 pm EDT	65	0.4225
Total				10.0575

07L.Gordon

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
1	10 September	11 pm EDT	25	0
2	11 September	5 am EDT	30	0
3	11 September	11 am EDT	30	0
4	11 September	5 pm EDT	40	0.1600
5	11 September	11 pm EDT	50	0.2500
6	12 September	5 am EDT	50	0.2500
7	12 September	11 am EDT	50	0.2500
8	12 September	5 pm EDT	55	0.3025
9	12 September	11 pm EDT	65	0.4225
10	13 September	5 am EDT	65	0.4225
11	13 September	11 am EDT	80	0.6400
12	13 September	5 pm EDT	95	0.9025
13	13 September	11 pm EDT	105	1.1025
14	14 September	5 am EDT	105	1.1025
15	14 September	11 am EDT	105	1.1025
16	14 September	5 pm EDT	105	1.1025
17	14 September	11 pm EDT	100	1.0000
18	15 September	5 am EDT	95	0.9025
19	15 September	11 am EDT	85	0.7225
20	15 September	5 pm EDT	80	0.6400
21	15 September	11 pm EDT	75	0.5625
22	16 September	5 am EDT	65	0.4225
23	16 September	11 am EDT	65	0.4225
24	16 September	5 pm EDT	65	0.4225
25	16 September	11 pm EDT	65	0.4225
26	17 September	5 am EDT	65	0.4225
27	17 September	11 am EDT	70	0.4900
28	17 September	5 pm EDT	70	0.4900
29	17 September	11 pm EDT	70	0.4900
30	18 September	5 am EDT	70	0.4900
31	18 September	11 am EDT	80	0.6400
32	18 September	5 pm EDT	80	0.6400
33	18 September	11 pm EDT	85	0.7225
34	19 September	5 am EDT	90	0.8100
35	19 September	11 am EDT	75	0.5625
36	19 September	5 pm EDT	75	0.5625
37	19 September	11 pm EDT	70	0.4900
38	20 September	5 am EDT	65	0.4225
39	20 September	11 am EDT	50	0.2500
40	20 September	5 pm EDT	45	0.2025
Total				21.2125

08L.Helene

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
1	12 September	11 am EDT	25	0
2	12 September	5 pm EDT	30	0
3	12 September	11 pm EDT	30	0
4	13 September	5 am EDT	30	0
5	13 September	11 am EDT	30	0
6	13 September	5 pm EDT	30	0
7	13 September	11 pm EDT	35	0.1225
8	14 September	5 am EDT	35	0.1225
9	14 September	11 am EDT	40	0.1600
10	14 September	5 pm EDT	40	0.1600
11	14 September	11 pm EDT	40	0.1600
12	15 September	5 am EDT	40	0.1600
13	15 September	11 am EDT	50	0.2500
14	15 September	5 pm EDT	60	0.3600
15	15 September	11 pm EDT	60	0.3600
16	16 September	5 am EDT	60	0.3600
17	16 September	11 am EDT	65	0.4225
18	16 September	5 pm EDT	65	0.4225
19	16 September	11 pm EDT	70	0.4900
20	17 September	5 am EDT	75	0.5625
21	17 September	11 am EDT	90	0.8100
22	17 September	5 pm EDT	90	0.8100
23	17 September	11 pm EDT	100	1.0000
24	18 September	5 am EDT	105	1.1025
25	18 September	11 am EDT	110	1.2100
26	18 September	5 pm EDT	100	1.0000
27	18 September	11 pm EDT	100	1.0000
28	19 September	5 am EDT	100	1.0000
29	19 September	11 am EDT	100	1.0000
30	19 September	5 pm EDT	95	0.9025
31	19 September	11 pm EDT	95	0.9025
32	20 September	5 am EDT	95	0.9025
33	20 September	11 am EDT	90	0.8100
34	20 September	5 pm EDT	90	0.8100
35	20 September	11 pm EDT	85	0.7225
36	21 September	5 am EDT	80	0.6400
37	21 September	11 am EDT	70	0.4900
38	21 September	5 pm EDT	70	0.4900
39	21 September	11 pm EDT	75	0.5625
40	22 September	5 am EDT	75	0.5625
41	22 September	11 am EDT	75	0.5625
42	22 September	5 pm EDT	65	0.4225
43	22 September	11 pm EDT	60	0.3600
44	23 September	5 am EDT	60	0.3600
45	23 September	8 am EDT	80	Special
46	23 September	11 am EDT	80	0.6400
47	23 September	5 pm EDT	80	0.6400
48	23 September	11 pm EDT	75	0.5625
49	24 September	5 am EDT	75	0.5625
50	24 September	11 am EDT	60	Extratropical
Total				24.9500

09L.Isaac

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
1	27 September	5 pm EDT	30	0
2	27 September	11 pm EDT	30	0
3	28 September	5 am EDT	30	0
4	28 September	11 am EDT	35	0.1225
5	28 September	5 pm EDT	40	0.1600
6	28 September	11 pm EDT	40	0.1600
7	29 September	5 am EDT	40	0.1600
8	29 September	11 am EDT	40	0.1600
9	29 September	5 pm EDT	50	0.2500
10	29 September	11 pm EDT	60	0.3600
11	30 September	5 am EDT	60	0.3600
12	30 September	11 am EDT	65	0.4225
13	30 September	5 pm EDT	70	0.4900
14	30 September	11 pm EDT	70	0.4900
15	1 October	5 am EDT	75	0.5625
16	1 October	11 am EDT	70	0.4900
17	1 October	5 pm EDT	70	0.4900
18	1 October	11 pm EDT	65	0.4225
19	2 October	5 am EDT	65	0.4225
20	2 October	11 am EDT	50	0.2500
21	2 October	5 pm EDT	50	Extratropical
Total				5.7725

Best Track (TCR)

31L.Zeta

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
1 January 2006	0000 UTC	50	0.25
1 January 2006	0600 UTC	50	0.25
1 January 2006	1200 UTC	50	0.25
1 January 2006	1800 UTC	55	0.3025
2 January 2006	0000 UTC	55	0.3025
2 January 2006	0600 UTC	50	0.25
2 January 2006	1200 UTC	45	0.2025
2 January 2006	1800 UTC	50	0.25
3 January 2006	0000 UTC	55	0.3025
3 January 2006	0600 UTC	55	0.3025
3 January 2006	1200 UTC	55	0.3025
3 January 2006	1800 UTC	55	0.3025
4 January 2006	0000 UTC	55	0.3025
4 January 2006	0600 UTC	50	0.25
4 January 2006	1200 UTC	45	0.2025
4 January 2006	1800 UTC	40	0.16
5 January 2006	0000 UTC	35	0.1225
5 January 2006	0600 UTC	35	0.1225
5 January 2006	1200 UTC	35	0.1225
5 January 2006	1800 UTC	35	0.1225
6 January 2006	0000 UTC	35	0.1225
6 January 2006	0600 UTC	30	0
6 January 2006	1200 UTC	30	0
6 January 2006	1800 UTC	25	Low
Total			4.795 01L.Alberto From Alberto's Tropical Cyclone Report. Date Time Maximum Sustained Winds (kt) ACE (104 kt2) 10 June 0600 UTC 25 0 10 June 1200 UTC 30 0 10 June 1800 UTC 30 0 11 June 0000 UTC 35 0.1225 11 June 0600 UTC 35 0.1225 11 June 1200 UTC 40 0.1600 11 June 1800 UTC 40 0.1600 12 June 0000 UTC 40 0.1600 12 June 0600 UTC 45 0.2025 12 June 1200 UTC 60 0.3600 12 June 1800 UTC 60 0.3600 13 June 0000 UTC 60 0.3600 13 June 0600 UTC 55 0.3025 13 June 1200 UTC 45 0.2025 13 June 1800 UTC 35 0.1225 14 June 0000 UTC 35 0.1225 14 June 0600 UTC 30 0 14 June 1200 UTC EXT EXT Total     2.7575 02L.NONAME From Unnamed Storm's Tropical Cyclone Report. Date Time Maximum Sustained Winds (kt) ACE (104 kt2) 17 July 0000 UTC 30 EXT 17 July 0600 UTC 30 0 17 July 1200 UTC 40 0.1600 17 July 1800 UTC 45 0.2025 18 July 0000 UTC 40 0.1600 18 July 0600 UTC 35 0.1225 18 July 1200 UTC 30 Low Total     0.6450 03L.Beryl From Beryl's Tropical Cyclone Report. Date Time Maximum Sustained Winds (kt) ACE (104 kt2) 18 July 1200 UTC 30 0 18 July 1800 UTC 35 0.1225 19 July 0000 UTC 35 0.1225 19 July 0600 UTC 35 0.1225 19 July 1200 UTC 40 0.1600 19 July 1800 UTC 50 0.2500 20 July 0000 UTC 50 0.2500 20 July 0600 UTC 50 0.2500 20 July 1200 UTC 50 0.2500 20 July 1800 UTC 45 0.2025 21 July 0000 UTC 45 0.2025 21 July 0600 UTC 45 0.2025 21 July 1200 UTC 40 0.1600 21 July 1800 UTC EXT EXT Total     2.2950 04L.Chris From Chris's Tropical Cyclone Report. Date Time Maximum Sustained Winds (kt) ACE (104 kt2) 01 August 0000 UTC 30 0 01 August 0600 UTC 35 0.1225 01 August 1200 UTC 40 0.1600 01 August 1800 UTC 50 0.2500 02 August 0000 UTC 50 0.2500 02 August 0600 UTC 55 0.3025 02 August 1200 UTC 55 0.3025 02 August 1800 UTC 50 0.2500 03 August 0000 UTC 50 0.2500 03 August 0600 UTC 40 0.1600 03 August 1200 UTC 35 0.1225 03 August 1800 UTC 30 0 04 August 0000 UTC 30 0 04 August 0600 UTC 25 Low Total     2.1700 05L.Debby From Debby's Tropical Cyclone Report. Date Time Maximum Sustained Winds (kt) ACE (104 kt2) 21 August 1800 UTC 30 0 22 August 0000 UTC 30 0 22 August 0600 UTC 30 0 22 August 1200 UTC 30 0 22 August 1800 UTC 30 0 23 August 0000 UTC 35 0.1225 23 August 0600 UTC 40 0.1600 23 August 1200 UTC 45 0.2025 23 August 1800 UTC 45 0.2025 24 August 0000 UTC 45 0.2025 24 August 0600 UTC 45 0.2025 24 August 1200 UTC 45 0.2025 24 August 1800 UTC 45 0.2025 25 August 0000 UTC 45 0.2025 25 August 0600 UTC 45 0.2025 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 30 0 26 August 1200 UTC 25 Low Total     2.3075 06L.Ernesto From Ernesto's Tropical Cyclone Report. Date Time Maximum Sustained Winds (kt) ACE (104 kt2) 24 August 1800 UTC 30 0 25 August 0000 UTC 30 0 25 August 0600 UTC 30 0 25 August 1200 UTC 35 0.1225 25 August 1800 UTC 35 0.1225 26 August 0000 UTC 40 0.1600 26 August 0600 UTC 45 0.2025 26 August 1200 UTC 50 0.2500 26 August 1800 UTC 55 0.3025 27 August 0000 UTC 55 0.3025 27 August 0600 UTC 65 0.4225 27 August 1200 UTC 55 0.3025 27 August 1800 UTC 45 0.2025 28 August 0000 UTC 40 0.1600 28 August 0600 UTC 40 0.1600 28 August 1200 UTC 35 0.1225 28 August 1800 UTC 35 0.1225 29 August 0000 UTC 35 0.1225 29 August 0600 UTC 40 0.1600 29 August 1200 UTC 40 0.1600 29 August 1800 UTC 40 0.1600 30 August 0000 UTC 40 0.1600 30 August 0600 UTC 40 0.1600 30 August 1200 UTC 35 0.1225 30 August 1800 UTC 35 0.1225 31 August 0000 UTC 35 0.1225 31 August 0600 UTC 45 0.2025 31 August 1200 UTC 55 0.3025 31 August 1800 UTC 60 0.3600 01 September 0000 UTC 60 0.3600 01 September 0600 UTC 50 0.2500 01 September 1200 UTC 30 0 01 September 1800 UTC 40 EXT Total     5.7200 07L.Florence From Florence's Tropical Cyclone Report. Date Time Maximum Sustained Winds (kt) ACE (104 kt2) 03 September 1800 UTC 30 0 04 September 0000 UTC 30 0 04 September 0600 UTC 30 0 04 September 1200 UTC 30 0 04 September 1800 UTC 30 0 05 September 0000 UTC 30 0 05 September 0600 UTC 35 0.1225 05 September 1200 UTC 35 0.1225 05 September 1800 UTC 40 0.1600 06 September 0000 UTC 40 0.1600 06 September 0600 UTC 40 0.1600 06 September 1200 UTC 45 0.2025 06 September 1800 UTC 45 0.2025 07 September 0000 UTC 45 0.2025 07 September 0600 UTC 45 0.2025 07 September 1200 UTC 40 0.1600 07 September 1800 UTC 40 0.1600 08 September 0000 UTC 40 0.1600 08 September 0600 UTC 40 0.1600 08 September 1200 UTC 40 0.1600 08 September 1800 UTC 45 0.2025 09 September 0000 UTC 50 0.2500 09 September 0600 UTC 50 0.2500 09 September 1200 UTC 50 0.2500 09 September 1800 UTC 50 0.2500 10 September 0000 UTC 60 0.3600 10 September 0600 UTC 70 0.4900 10 September 1200 UTC 75 0.5625 10 September 1800 UTC 80 0.6400 11 September 0000 UTC 80 0.6400 11 September 0600 UTC 70 0.4900 11 September 1200 UTC 75 0.5625 11 September 1800 UTC 75 0.5625 12 September 0000 UTC 70 0.4900 12 September 0600 UTC 65 0.4225 12 September 1200 UTC 65 0.4225 12 September 1800 UTC 65 0.4225 13 September 0000 UTC 70 EXT Total     9.6025 08L.Gordon From Gordon's Tropical Cyclone Report. Date Time Maximum Sustained Winds (kt) ACE (104 kt2) 10 September 1800 UTC 25 0 11 September 0000 UTC 30 0 11 September 0600 UTC 30 0 11 September 1200 UTC 35 0.1225 11 September 1800 UTC 40 0.1600 12 September 0000 UTC 50 0.2500 12 September 0600 UTC 50 0.2500 12 September 1200 UTC 50 0.2500 12 September 1800 UTC 55 0.3025 13 September 0000 UTC 65 0.4225 13 September 0600 UTC 70 0.4900 13 September 1200 UTC 80 0.6400 13 September 1800 UTC 95 0.9025 14 September 0000 UTC 105 1.1025 14 September 0600 UTC 105 1.1025 14 September 1200 UTC 105 1.1025 14 September 1800 UTC 105 1.1025 15 September 0000 UTC 100 1.0000 15 September 0600 UTC 95 0.9025 15 September 1200 UTC 85 0.7225 15 September 1800 UTC 80 0.6400 16 September 0000 UTC 75 0.5625 16 September 0600 UTC 70 0.4900 16 September 1200 UTC 65 0.4225 16 September 1800 UTC 65 0.4225 17 September 0000 UTC 65 0.4225 17 September 0600 UTC 65 0.4225 17 September 1200 UTC 70 0.4900 17 September 1800 UTC 70 0.4900 18 September 0000 UTC 75 0.5625 18 September 0600 UTC 75 0.5625 18 September 1200 UTC 80 0.6400 18 September 1800 UTC 85 0.7225 19 September 0000 UTC 85 0.7225 19 September 0600 UTC 90 0.8100 19 September 1200 UTC 80 0.6400 19 September 1800 UTC 75 0.5625 20 September 0000 UTC 70 0.4900 20 September 0600 UTC 70 0.4900 20 September 1200 UTC 65 0.4225 20 September 1800 UTC 65 0.4225 21 September 0000 UTC EXT EXT Total     22.2350 09L.Helene From Helene's Tropical Cyclone Report. Date Time Maximum Sustained Winds (kt) ACE (104 kt2) 12 September 1200 UTC 25 0 12 September 1800 UTC 30 0 13 September 0000 UTC 30 0 13 September 0600 UTC 30 0 13 September 1200 UTC 30 0 13 September 1800 UTC 30 0 14 September 0000 UTC 35 0.1225 14 September 0600 UTC 35 0.1225 14 September 1200 UTC 40 0.1600 14 September 1800 UTC 40 0.1600 15 September 0000 UTC 40 0.1600 15 September 0600 UTC 45 0.2025 15 September 1200 UTC 50 0.2500 15 September 1800 UTC 55 0.3025 16 September 0000 UTC 60 0.3600 16 September 0600 UTC 60 0.3600 16 September 1200 UTC 65 0.4225 16 September 1800 UTC 65 0.4225 17 September 0000 UTC 70 0.4900 17 September 0600 UTC 75 0.5625 17 September 1200 UTC 80 0.6400 17 September 1800 UTC 90 0.8100 18 September 0000 UTC 100 1.0000 18 September 0600 UTC 105 1.1025 18 September 1200 UTC 105 1.1025 18 September 1800 UTC 95 0.9025 19 September 0000 UTC 95 0.9025 19 September 0600 UTC 95 0.9025 19 September 1200 UTC 95 0.9025 19 September 1800 UTC 90 0.8100 20 September 0000 UTC 90 0.8100 20 September 0600 UTC 90 0.8100 20 September 1200 UTC 90 0.8100 20 September 1800 UTC 80 0.6400 21 September 0000 UTC 80 0.6400 21 September 0600 UTC 75 0.5625 21 September 1200 UTC 75 0.5625 21 September 1800 UTC 75 0.5625 22 September 0000 UTC 75 0.5625 22 September 0600 UTC 70 0.4900 22 September 1200 UTC 70 0.4900 22 September 1800 UTC 70 0.4900 23 September 0000 UTC 75 0.5625 23 September 0600 UTC 80 0.6400 23 September 1200 UTC 80 0.6400 23 September 1800 UTC 75 0.5625 24 September 0000 UTC 70 0.4900 24 September 0600 UTC 65 0.4225 24 September 1200 UTC 65 0.4225 24 September 1800 UTC 65 EXT Total     24.3425 10L.Isaac From Isaac's Tropical Cyclone Report. Date Time Maximum Sustained Winds (kt) ACE (104 kt2) 27 September 1800 UTC 30 0 28 September 0000 UTC 30 0 28 September 0600 UTC 35 0.1225 28 September 1200 UTC 40 0.1600 28 September 1800 UTC 40 0.1600 29 September 0000 UTC 40 0.1600 29 September 0600 UTC 40 0.1600 29 September 1200 UTC 45 0.2025 29 September 1800 UTC 50 0.2500 30 September 0000 UTC 60 0.3600 30 September 0600 UTC 60 0.3600 30 September 1200 UTC 65 0.4225 30 September 1800 UTC 70 0.4900 01 October 0000 UTC 75 0.5625 01 October 0600 UTC 75 0.5625 01 October 1200 UTC 70 0.4900 01 October 1800 UTC 70 0.4900 02 October 0000 UTC 65 0.4225 02 October 0600 UTC 65 0.4225 02 October 1200 UTC 60 0.3600 02 October 1800 UTC 55 0.3025 03 October 0000 UTC 55 EXT Total     6.4600 Season total Storm Type ACE (104 kt2) 31L (Zeta) Best Track 4.795 01L (Alberto) Best Track 2.7575 02L (Noname) Best Track 0.645 03L (Beryl) Best Track 2.2950 04L (Chris) Best Track 2.17 05L (Debby) Best Track 2.3075 06L (Ernesto) Best Track 5.72 07L (Florence) Best Track 9.6025 08L (Gordon) Best Track 22.235 09L (Helene) Best Track 24.3425 10L (Isaac) Best Track 6.46 Total 83.33 See also Pacific ACE calcs References