This is the page for calculating the Accumulated cyclone energy for the 2023 Pacific 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. Thus,

{\text{ACE}}=\sum _{}^{}{\frac {{v_{\mathrm {max} }}^{2}}{10^{4}}},

where v_max is estimated sustained wind speed in knots.

Operational (Advisories)

01E.Adrian

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	27 June	3 pm MDT	40	0.1600
2	27 June	9 pm MDT	50	0.2500
3	28 June	3 am MDT	55	0.3025
4	28 June	9 am MDT	65	0.4225
5	28 June	3 pm MDT	70	0.4900
6	28 June	9 pm MDT	70	0.4900
7	29 June	3 am MDT	75	0.5625
8	29 June	9 am MDT	75	0.5625
9	29 June	3 pm MDT	75	0.5625
10	29 June	9 pm MDT	80	0.6400
11	30 June	3 am MDT	85	0.7225
12	30 June	9 am MDT	90	0.8100
13	30 June	3 pm MDT	90	0.8100
14	30 June	9 pm MDT	80	0.6400
15	1 July	3 am MDT	80	0.6400
16	1 July	9 am MDT	55	0.3025
17	1 July	2 pm PDT	50	0.2500
18	1 July	8 pm PDT	50	0.2500
19	2 July	2 am PDT	30	0
20	2 July	8 am PDT	30	0
21	2 July	2 pm PDT	25	post-trop.
Total				8.8675

02E.Beatriz

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	28 June	10 pm CDT	25	Potential
2	29 June	4 am CDT	30	0
3	29 June	10 am CDT	30	0
4	29 June	4 pm CDT	35	0.1225
5	29 June	10 pm CDT	35	0.1225
6	30 June	4 am CDT	50	0.25000
7	30 June	10 am CDT	65	0.4225
8	30 June	4 pm CDT	75	0.5625
9	30 June	10 pm CDT	75	0.5625
10	1 July	4 am CDT	55	0.3025
11	1 July	10 am CDT	45	0.2025
12	1 July	12 pm MDT	25	Remnants
Total				2.5475

03E.Calvin

Eastern Pacific

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	11 July	3 pm MDT	30	0
2	11 July	9 pm MDT	30	0
3	12 July	3 am MDT	40	0.1600
4	12 July	5 am HST	45	0.2025
5	12 July	11 am HST	55	0.3025
6	12 July	5 pm HST	60	0.3600
7	12 July	11 pm HST	60	0.3600
8	13 July	5 am HST	65	0.4225
9	13 July	11 am HST	70	0.4900
10	13 July	5 pm HST	85	0.7225
11	13 July	11 pm HST	90	0.8100
12	14 July	5 am HST	105	1.1025
13	14 July	11 am HST	110	1.21
14	14 July	5 pm HST	105	1.1025
15	14 July	11 pm HST	90	0.8100
16	15 July	5 am HST	85	0.7225
17	15 July	11 am HST	85	0.7225
18	15 July	5 pm HST	85	0.7225
19	15 July	11 pm HST	70	0.4900
20	16 July	5 am HST	60	0.3600
21	16 July	11 am HST	55	0.3025
22	16 July	5 pm HST	50	0.2500
23	16 July	11 pm HST	45	0.2025
Total				11.77

Central Pacific

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
24	17 July	5 am HST	45	0.2025
25	17 July	11 am HST	40	0.1600
26	17 July	5 pm HST	40	0.1600
27	17 July	11 pm HST	40	0.1600
28	18 July	5 am HST	40	0.1600
29	18 July	11 am HST	45	0.2025
30	18 July	5 pm HST	50	0.2500
31	18 July	11 pm HST	45	0.2025
32	19 July	5 am HST	40	0.1600
33	19 July	11 am HST	35	Post-Tropical
Total				1.6575

04E.Four-E

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	21 July	2 am PDT	30	0
2	21 July	8 am PDT	30	0
3	21 July	2 pm PDT	30	0
4	21 July	8 pm PDT	30	0
5	22 July	2 am PDT	30	0
6	22 July	8 am PDT	30	Post-Tropical
Total				0

05E.Dora

Eastern Pacific

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	31 July	4 pm CDT	30	0
2	31 July	10 pm CDT	30	0
3	1 August	3 am MDT	35	0.1225
4	1 August	9 am MDT	50	0.2500
5	1 August	3 pm PDT	55	0.3025
6	1 August	5 pm HST	65	0.4225
7	1 August	11 pm HST	80	0.6400
8	2 August	5 am HST	90	0.8100
9	2 August	11 am HST	95	0.9025
10	2 August	5 pm HST	110	1.2100
11	2 August	11 pm HST	115	1.3225
12	3 August	5 am HST	110	1.2100
13	3 August	11 am HST	105	1.1025
14	3 August	5 pm HST	120	1.4400
15	3 August	11 pm HST	105	1.1025
16	4 August	5 am HST	95	0.9025
17	4 August	11 am HST	95	0.9025
18	4 August	5 pm HST	90	0.8100
19	4 August	11 pm HST	95	0.9025
20	5 August	5 am HST	100	1.0000
21	5 August	8 am HST	110	Special
22	5 August	11 am HST	115	1.3225
23	5 August	5 pm HST	125	1.5625
24	5 August	11 pm HST	125	1.5625
25	6 August	5 am HST	120	1.400
Total				21.2425

Central Pacific

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
26	6 August	11 am HST	120	1.4400
27	6 August	5 pm HST	120	1.4400
28	6 August	11 pm HST	120	1.4400
29	7 August	5 am HST	115	1.3225
30	7 August	11 am HST	115	1.3225
31	7 August	5 pm HST	115	1.3225
32	7 August	11 pm HST	115	1.3225
33	8 August	5 am HST	115	1.3225
34	8 August	11 am HST	115	1.3225
35	8 August	5 pm HST	115	1.3225
36	8 August	11 pm HST	115	1.3225
37	9 August	5 am HST	115	1.3225
38	9 August	11 am HST	115	1.3225
39	9 August	5 pm HST	125	1.5625
40	9 August	11 pm HST	120	1.4400
41	10 August	5 am HST	105	1.1025
42	10 August	11 am HST	105	1.1025
43	10 August	5 pm HST	105	1.1025
44	10 August	11 pm HST	105	1.1025
45	11 August	5 am HST	100	1.0000
46	11 August	11 am HST	95	0.9025
Total				26.86

06E.Eugene

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	5 August	9 am MDT	30	0
2	5 August	3 pm MDT	35	0.1225
3	5 August	9 pm MDT	45	0.2025
4	6 August	3 am MDT	55	0.3025
5	6 August	9 am MDT	60	0.3600
6	6 August	3 pm MDT	60	0.3600
7	6 August	8 pm PDT	50	0.2500
8	7 August	2 am MDT	45	0.2025
9	7 August	8 am PDT	40	0.1600
10	7 August	2 pm MDT	35	Post-Tropical
Total				1.96

07E.Fernanda

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	12 August	3 pm MDT	30	0
2	12 August	9 pm MDT	40	0.1600
3	13 August	2 am PDT	45	0.2025
4	13 August	8 am PDT	50	0.2500
5	13 August	2 pm PDT	65	0.4225
6	13 August	5 pm HST	90	0.8100
7	13 August	11 pm HST	110	1.2100
8	14 August	5 am HST	115	1.3225
9	14 August	11 am HST	115	1.3225
10	14 August	5 pm HST	115	1.1025
11	14 August	11 pm HST	95	0.9025
12	15 August	5 am HST	95	0.9025
13	15 August	11 am HST	90	0.8100
14	15 August	5 pm HST	80	0.6400
15	15 August	11 pm HST	65	0.4225
16	16 August	5 am HST	55	0.3025
17	16 August	11 am HST	45	0.2025
18	16 August	5 pm HST	40	0.1600
19	16 August	11 pm HST	35	0.1225
20	17 August	5 am HST	30	Post-Tropical
Total				11.2675

08E.Greg

Eastern Pacific

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	13 August	5 pm HST	30	0
2	13 August	11 pm HST	35	0.1225
Total				0.1225

Central Pacific

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
3	14 August	5 am HST	35	0.1225
4	14 August	11 am HST	40	0.1600
5	14 August	5 pm HST	40	0.1600
6	14 August	11 pm HST	45	0.2025
7	15 August	5 am HST	45	0.2025
8	15 August	11 am HST	45	0.2025
9	15 August	5 pm HST	45	0.2025
10	15 August	11 pm HST	45	0.2025
11	16 August	5 am HST	45	0.2025
12	16 August	11 am HST	40	0.1600
13	16 August	5 pm HST	40	0.1600
14	16 August	11 pm HST	40	0.1600
15	17 August	5 am HST	35	0.1225
16	17 August	11 am HST	30	0
Total				2.26

09E.Hilary

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	16 August	10 am CDT	35	0.1225
2	16 August	4 pm CDT	35	0.1225
3	16 August	10 pm CDT	45	0.2025
4	17 August	3 am CDT	60	0.3600
5	17 August	9 am MDT	75	0.5625
6	17 August	3 pm MDT	95	0.9025
7	17 August	9 pm MDT	110	1.2100
8	18 August	3 am MDT	125	1.5625
9	18 August	9 am MDT	125	1.5625
10	18 August	3 pm MDT	115	1.3225
11	18 August	9 pm MDT	115	1.3225
12	19 August	3 am MDT	115	1.3225
13	19 August	9 am MDT	110	1.2100
14	19 August	3 pm MDT	95	0.9025
15	19 August	9 pm MDT	80	0.6400
16	20 August	2 am PDT	75	0.5625
17	20 August	8 am PDT	60	0.3600
18	20 August	2 pm PDT	50	0.2500
19	20 August	8 pm PDT	40	0.1600
20	21 August	2 am PDT	30	Post-Tropical
21	21 August	8 am PDT	30	Post-Tropical
22	21 August	2 pm PDT	25	Post-Tropical
Total				14.66

10E.Irwin

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	26 August	5 pm HST	30	0
2	26 August	11 pm HST	30	0
3	27 August	5 am HST	35	0.1225
4	27 August	11 am HST	35	0.1225
5	27 August	5 pm HST	35	0.1225
6	27 August	11 pm HST	35	0.1225
7	28 August	5 am HST	35	0.1225
8	28 August	11 am HST	35	0.1225
9	28 August	5 pm HST	35	0.1225
10	28 August	11 pm HST	35	0.1225
11	29 August	5 am HST	35	0.1225
12	29 August	11 am HST	35	0.1225
13	29 August	5 pm HST	35	Remnants
Total				1.225

11E.Jova

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	4 September	4 pm CDT	30	0
2	4 September	10 pm CDT	30	0
3	5 September	3 am MDT	35	0.1225
4	5 September	9 am MDT	45	0.2025
5	5 September	3 pm MDT	55	0.3025
6	5 September	9 pm MDT	60	0.3600
7	6 September	3 am MDT	75	0.5625
8	6 September	9 am MDT	90	0.8100
9	6 September	3 pm MDT	115	1.3225
10	6 September	9 pm MDT	140	1.9600
11	7 September	3 am MDT	140	1.9600
12	7 September	8 am PDT	135	1.8225
13	7 September	2 pm PDT	125	1.5625
14	7 September	8 pm PDT	115	1.3225
15	8 September	2 am PDT	95	0.9025
16	8 September	8 am PDT	85	0.7225
17	8 September	2 pm PDT	75	0.5625
18	8 September	8 pm PDT	65	0.4225
19	9 September	2 am PDT	60	0.3600
20	9 September	8 am PDT	55	0.3025
21	9 September	2 pm PDT	45	0.2025
22	9 September	8 pm PDT	45	0.2025
23	10 September	2 am PDT	40	0.1600
24	10 September	8 am PDT	35	0.1225
25	10 September	2 pm PDT	35	Post-tropical
Total				16.27

12E.Twelve-E

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	15 September	11 am HST	25	0
2	15 September	5 pm HST	25	0
3	15 September	11 pm HST	25	0
4	16 September	5 am HST	30	0
5	16 September	11 am HST	30	0
6	16 September	5 pm HST	30	Post-Tropical
Total				0

13E.Kenneth

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	19 September	8 am PDT	30	0
2	19 September	2 pm PDT	40	0.1600
3	19 September	8 pm PDT	40	0.1600
4	20 September	2 am PDT	40	0.1600
5	20 September	8 am PDT	45	0.2025
6	20 September	2 pm PDT	45	0.2025
7	20 September	8 pm PDT	45	0.2025
8	21 September	2 am PDT	45	0.2025
9	21 September	8 am PDT	40	0.1600
10	21 September	2 pm PDT	35	0.1225
11	21 September	8 pm PDT	35	0.1225
12	22 September	2 am PDT	30	0.0000
13	22 September	8 am PDT	30	Post-Tropical
Total				1.695

14E.Fourteen-E

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	23 September	11 am HST	30	0
2	23 September	5 pm HST	30	0
3	23 September	11 pm HST	30	0
4	24 September	5 am HST	30	0
5	24 September	11 am HST	30	0
6	24 September	8 pm PDT	25	Post-Tropical
Total				0

15E.Lidia

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	3 October	3 am MDT	35	0.1225
2	3 October	9 am MDT	35	0.1225
3	3 October	3 pm MDT	35	0.1225
4	3 October	9 pm MDT	35	0.1225
5	4 October	3 am MDT	40	0.1600
6	4 October	9 am MDT	45	0.2025
7	4 October	3 pm MDT	45	0.2025
8	4 October	9 pm MDT	45	0.2025
9	5 October	3 am MDT	45	0.2025
10	5 October	9 am MDT	50	0.2500
11	5 October	3 pm MDT	50	0.2500
12	5 October	9 pm MDT	55	0.3025
13	6 October	3 am MDT	60	0.3600
14	6 October	9 am MDT	60	0.3600
15	6 October	3 pm MDT	60	0.3600
16	6 October	9 pm MDT	60	0.3600
17	7 October	3 am MDT	55	0.3025
18	7 October	9 am MDT	55	0.3025
19	7 October	3 pm MDT	55	0.3025
20	7 October	9 pm MDT	60	0.3600
21	8 October	3 am MDT	60	0.3600
22	8 October	9 am MDT	60	0.3600
23	8 October	3 pm MDT	60	0.3600
24	8 October	9 pm MDT	60	0.3600
25	9 October	3 am MDT	55	0.3025
26	9 October	9 am MDT	55	0.3025
27	9 October	3 pm MDT	60	0.3600
28	9 October	9 pm MDT	65	0.4225
29	10 October	3 am MDT	75	0.5625
30	10 October	9 am MDT	85	0.7225
31	10 October	3 pm MDT	110	1.2100
32	10 October	10 pm CDT	90	0.8100
33	11 October	4 am CDT	30	Remnants
Total				11.1025

16E.Max

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	7 October	10 pm CDT	25	Potential
2	8 October	4 am CDT	25	Potential
3	8 October	10 am CDT	30	Potential
4	8 October	4 pm CDT	30	0
5	8 October	10 pm CDT	35	0.1225
6	9 October	4 am CDT	45	0.2025
7	9 October	10 am CDT	50	0.2500
8	9 October	4 pm CDT	50	0.2500
9	9 October	10 pm CDT	30	0.0000
10	10 October	4 am CDT	20	Remnants
Total				0.825

17E.Norma

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	17 October	3 pm MDT	35	0.1225
2	17 October	9 pm MDT	45	0.2025
3	18 October	3 am MDT	55	0.3025
4	18 October	9 am MDT	60	0.3600
5	18 October	3 pm MDT	70	0.4900
6	18 October	9 pm MDT	80	0.6400
7	19 October	3 am MDT	105	1.1025
8	19 October	9 am MDT	115	1.3225
9	19 October	3 pm MDT	110	1.2100
10	19 October	9 pm MDT	105	1.1025
11	20 October	3 am MDT	100	1.0000
12	20 October	9 am MDT	95	0.9025
13	20 October	3 pm MDT	105	1.1025
14	20 October	9 pm MDT	105	1.1025
15	21 October	3 am MDT	100	1.000
16	21 October	9 am MDT	85	0.7225
17	21 October	3 pm MDT	70	0.4900
18	21 October	9 pm MDT	55	0.3025
19	22 October	3 am MDT	50	0.2500
20	22 October	9 am MDT	50	0.2500
21	22 October	3 pm MDT	55	0.3025
22	22 October	9 pm MDT	50	0.2500
23	23 October	3 am MDT	30	0.0000
24	23 October	9 am MDT	30	Post-Tropical
Total				14.53

18E.Otis

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	22 October	10 am CDT	30	0
2	22 October	4 pm CDT	35	0.1225
3	22 October	10 pm CDT	35	0.1225
4	23 October	4 am CDT	40	0.16000
5	23 October	10 am CDT	40	0.16000
6	23 October	4 pm CDT	45	0.2025
7	23 October	10 pm CDT	45	0.2025
8	24 October	4 am CDT	55	0.3025
9	24 October	10 am CDT	60	0.3600
10	24 October	4 pm CDT	110	1.2100
11	24 October	7 pm CDT	125	Special
12	24 October	10 pm CDT	140	1.9600
13	25 October	4 am CDT	115	1.3225
14	25 October	10 am CDT	70	0.4900
15	25 October	4 pm CDT	30	Remnants
Total				6.615

19E.Pilar

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	28 October	4 pm CDT	30	0
2	28 October	10 pm CDT	30	0
3	29 October	4 am CDT	30	0
4	29 October	10 am CDT	30	0
5	29 October	4 pm CDT	30	0
6	29 October	10 pm CDT	35	0.1225
7	30 October	4 am CDT	35	0.1225
8	30 October	10 am CDT	45	0.2025
9	30 October	4 pm CDT	45	0.2025
10	30 October	10 pm CDT	45	0.2025
11	31 October	4 am CDT	45	0.2025
12	31 October	10 am CDT	45	0.2025
13	31 October	4 pm CDT	45	0.2025
14	31 October	10 pm CDT	50	0.2500
15	1 November	4 am CDT	50	0.2500
16	1 November	10 am CDT	50	0.2500
17	1 November	4 pm CDT	45	0.2025
18	1 November	10 pm CDT	40	0.1600
19	2 November	4 am CDT	45	0.2025
20	2 November	10 am CDT	45	0.2025
21	2 November	4 pm CDT	50	0.2500
22	2 November	10 pm CDT	50	0.2500
23	3 November	4 am CDT	45	0.2025
24	3 November	10 am CDT	45	0.2025
25	3 November	4 pm CDT	40	0.1600
26	3 November	9 pm MDT	40	0.1600
27	4 November	3 am MDT	40	0.1600
28	4 November	9 am MDT	40	0.1600
29	4 November	3 pm MDT	40	0.1600
30	4 November	9 pm MDT	45	0.2025
31	5 November	2 am MST	45	0.2025
32	5 November	8 am MST	45	0.2025
33	5 November	2 pm MST	35	0.1225
34	5 November	8 apm MST	35	Post-tropical
Total				5.4125

20E.Ramon

Adv.	Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
1	23 November	8 am MDT	30	0
2	23 November	1 pm PST	30	0
3	23 November	7 pm PST	30	0
4	24 November	1 am PST	30	0
5	24 November	7 am PST	30	0
6	24 November	1 pm PST	30	0
7	24 November	7 pm PST	35	0.1225
8	25 November	1 am PST	35	0.1225
9	25 November	7 am PST	35	0.1225
10	25 November	1 pm PST	35	0.1225
11	25 November	7 pm PST	40	0.1600
12	26 November	1 am PST	35	0.1225
13	26 November	7 am PST	30	Remnant Low
Total				0.7725

Best Track (Tropical Cyclone Reports)

04E.Four-E

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
20 July	1200 UTC	30	0
20 July	1800 UTC	30	0
21 July	0000 UTC	30	0
21 July	0600 UTC	30	0
21 July	1200 UTC	30	0
21 July	1800 UTC	30	0
22 July	0000 UTC	30	low
22 July	0600 UTC	30	low
22 July	1200 UTC	25	low
22 July	1800 UTC	25	low
23 July	0000 UTC	25	low
23 July	0600 UTC	N/A	Dissipated
Total			0

Totals

Storm	Type	ACE (10⁴ kt²)
01E (Adrian)	Best track	8.7550
02E (Beatriz)	Best track	2.5650
03E (Calvin)	Best track	8.4000 (1.700)
04E (Four-E)	Best track	0.0000
05E (Dora)	Best track	21.8075 (31.1725)
06E (Eugene)	Best track	1.8575
07E (Fernanda)	Best track	12.5900
08E (Greg)	Best track	0.1225 (2.2600)
09E (Hilary)	Best track	13.4475
10E (Irwin)	Best track	1.0550
11E (Jova)	Best track	16.0995
12E (Twelve-E)	Best track	0.0000
13E (Kenneth)	Best track	1.8175
14E (Fourteen-E)	Best track	0.000
15E (Lidia)	Best track	11.9750
16E (Max)	Best track	1.1950
17E (Norma)	Best track	14.5300
18E (Otis)	Best track	9.3825
19E (Pilar)	Best track	5.4150
20E (Ramon)	Best track	0.9325
Total		131.947 (35.1325)

References

^ Stacy R. Stewart (January 6, 2006). Tropical Storm Zeta Discussion Number 30 (Report). National Hurricane Center. Retrieved May 17, 2020.

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[1] Stacy R. Stewart (January 6, 2006). Tropical Storm Zeta Discussion Number 30 (Report). National Hurricane Center. Retrieved May 17, 2020.

[1]

Talk:2023 Pacific hurricane season/ACE calcs

Contents

Operational (Advisories)

01E.Adrian

02E.Beatriz

03E.Calvin

Eastern Pacific

Central Pacific

04E.Four-E

05E.Dora

Eastern Pacific

Central Pacific

06E.Eugene

07E.Fernanda

08E.Greg

Eastern Pacific

Central Pacific

09E.Hilary

10E.Irwin

11E.Jova

12E.Twelve-E

13E.Kenneth

14E.Fourteen-E

15E.Lidia

16E.Max

17E.Norma

18E.Otis

19E.Pilar

20E.Ramon

Best Track (Tropical Cyclone Reports)

04E.Four-E

Totals

References