2018 Atlantic hurricane season (Money Hurricane)/ACE Calcs

This is the page for calculating the Accumulated cyclone energy for the 2018 Atlantic hurricane season. If any storms of a season happen to cross years, the storm's ACE counts for the previous year.

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.

Storms

01L.One

One did not reach tropical storm intensity and therefore did not produce any ACE.

02L.Alberto

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
19 May	15:00 UTC	30	0
19 May	21:00 UTC	30	0
20 May	03:00 UTC	30	0
20 May	09:00 UTC	30	0
20 May	15:00 UTC	35	0.1225
20 May	21:00 UTC	40	0.1600
21 May	03:00 UTC	35	0.1225
21 May	09:00 UTC	35	Post-Tropical
Total			0.405

03L.Beryl

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
01 June	21:00 UTC	30	0
02 June	03:00 UTC	30	0
02 June	09:00 UTC	35	0.1225
02 June	15:00 UTC	40	0.1600
02 June	21:00 UTC	35	0.1225
03 June	09:00 UTC	30	0
03 June	09:00 UTC	30	0
03 June	15:00 UTC	30	0
03 June	21:00 UTC	35	0.1225
04 June	03:00 UTC	40	0.1600
04 June	09:00 UTC	45	0.2025
04 June	15:00 UTC	50	0.2500
04 June	21:00 UTC	55	0.3025
05 June	03:00 UTC	60	0.3600
05 June	09:00 UTC	65	0.4225
05 June	15:00 UTC	70	0.4900
05 June	21:00 UTC	70	0.4900
06 June	03:00 UTC	65	0.4225
06 June	09:00 UTC	55	0.3025
06 June	15:00 UTC	50	0.2500
06 June	21:00 UTC	50	0.2500
07 June	03:00 UTC	40	0.1600
07 June	09:00 UTC	30	0
07 June	15:00 UTC	25	0
07 June	21:00 UTC	25	0
08 June	03:00 UTC	20	0
08 June	09:00 UTC	15	Post-Tropical
Total			4.59

04L.Chris

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
25 June	03:00 UTC	30	0
25 June	09:00 UTC	30	0
25 June	15:00 UTC	30	0
25 June	21:00 UTC	35	0.1225
26 June	03:00 UTC	35	0.1225
26 June	09:00 UTC	40	0.1600
26 June	15:00 UTC	45	0.2025
26 June	21:00 UTC	45	0.2025
27 June	03:00 UTC	50	0.2500
27 June	09:00 UTC	50	0.2500
27 June	15:00 UTC	45	0.2025
27 June	21:00 UTC	45	0.2025
28 June	03:00 UTC	40	0.1600
28 June	09:00 UTC	40	0.1600
28 June	15:00 UTC	40	0.1600
28 June	21:00 UTC	35	0.1225
29 June	03:00 UTC	35	0.1225
29 June	09:00 UTC	30	0
29 June	15:00 UTC	25	0
29 June	21:00 UTC	20	Remnant Low
Total			2.44

05L.Debby

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
05 July	21:00 UTC	30	0
06 July	03:00 UTC	30	0
06 July	09:00 UTC	30	0
06 July	15:00 UTC	30	0
06 July	21:00 UTC	30	0
07 July	03:00 UTC	35	0.1225
07 July	09:00 UTC	40	0.1600
07 July	15:00 UTC	45	0.2025
07 July	21:00 UTC	35	0.1225
08 July	03:00 UTC	30	0
08 July	09:00 UTC	35	0.1225
08 July	15:00 UTC	30	0
08 July	21:00 UTC	25	Remnant Low
Total			0.73

06L.Ernesto

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
11 July	09:00 UTC	30	0
11 July	15:00 UTC	30	0
11 July	21:00 UTC	30	0
12 July	03:00 UTC	30	0
12 July	09:00 UTC	30	0
12 July	15:00 UTC	35	0.1225
12 July	21:00 UTC	40	0.1600
13 July	03:00 UTC	45	0.2025
13 July	09:00 UTC	45	0.2025
13 July	15:00 UTC	50	0.2500
13 July	21:00 UTC	50	0.2500
14 July	03:00 UTC	50	0.2500
14 July	09:00 UTC	45	0.2025
14 July	15:00 UTC	40	0.1600
14 July	21:00 UTC	40	0.1600
15 July	03:00 UTC	45	0.2025
15 July	09:00 UTC	50	0.2500
15 July	15:00 UTC	60	0.3600
15 July	21:00 UTC	65	0.4225
16 July	03:00 UTC	70	0.4900
16 July	09:00 UTC	75	0.5625
16 July	15:00 UTC	80	0.6400
16 July	21:00 UTC	85	0.7225
17 July	03:00 UTC	95	0.9025
17 July	09:00 UTC	100	1.000
17 July	15:00 UTC	100	1.000
17 July	21:00 UTC	100	1.000
18 July	03:00 UTC	100	1.000
18 July	09:00 UTC	100	1.000
18 July	15:00 UTC	100	1.000
18 July	21:00 UTC	90	0.8100
19 July	03:00 UTC	70	0.4900
19 July	09:00 UTC	50	0.2500
19 July	15:00 UTC	40	0.1600
19 July	21:00 UTC	35	Post-Tropical
Total			14.2225

07L.Florence

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
26 July	21:00 UTC	30	0
27 July	03:00 UTC	30	0
27 July	09:00 UTC	30	0
27 July	15:00 UTC	30	0
27 July	21:00 UTC	30	0
28 July	03:00 UTC	30	0
28 July	09:00 UTC	30	0
28 July	15:00 UTC	30	0
28 July	21:00 UTC	35	0.1225
29 July	03:00 UTC	40	0.1600
29 July	09:00 UTC	45	0.2025
29 July	15:00 UTC	50	0.2500
29 July	21:00 UTC	55	0.3025
30 July	03:00 UTC	55	0.3025
30 July	09:00 UTC	55	0.3025
30 July	15:00 UTC	50	0.2500
30 July	21:00 UTC	50	0.2500
31 July	03:00 UTC	50	0.2500
31 July	09:00 UTC	50	0.2500
31 July	15:00 UTC	50	Post-Tropical
Total			2.6425

08L.Gordon

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
14 August	15:00 UTC	30	0
14 August	21:00 UTC	30	0
15 August	03:00 UTC	30	0
15 August	09:00 UTC	30	0
15 August	15:00 UTC	30	0
15 August	21:00 UTC	30	0
16 August	03:00 UTC	35	0.1225
16 August	09:00 UTC	40	0.1600
16 August	15:00 UTC	45	0.2025
16 August	21:00 UTC	50	0.2500
17 August	03:00 UTC	60	0.3600
17 August	09:00 UTC	65	0.4225
17 August	15:00 UTC	65	0.4225
17 August	21:00 UTC	70	0.4900
18 August	03:00 UTC	75	0.5625
18 August	09:00 UTC	75	0.5625
18 August	15:00 UTC	80	0.6400
18 August	21:00 UTC	85	0.7225
19 August	03:00 UTC	90	0.8100
19 August	09:00 UTC	95	0.9025
19 August	15:00 UTC	95	0.9025
19 August	21:00 UTC	100	1.0000
20 August	03:00 UTC	110	1.2100
20 August	09:00 UTC	115	1.3225
20 August	15:00 UTC	120	1.4400
20 August	21:00 UTC	125	1.5625
21 August	03:00 UTC	135	1.8225
21 August	09:00 UTC	135	1.8225
21 August	15:00 UTC	140	1.9600
21 August	21:00 UTC	140	1.9600
22 August	03:00 UTC	135	1.8225
22 August	09:00 UTC	130	1.6900
22 August	15:00 UTC	120	1.4400
22 August	21:00 UTC	110	1.2100
23 August	03:00 UTC	105	1.1025
23 August	09:00 UTC	100	1.0000
23 August	15:00 UTC	100	1.0000
23 August	21:00 UTC	85	0.7225
24 August	03:00 UTC	75	0.5625
24 August	09:00 UTC	70	0.4900
24 August	15:00 UTC	65	0.4225
24 August	21:00 UTC	55	0.3025
25 August	03:00 UTC	50	0.2500
25 August	09:00 UTC	50	0.2500
25 August	15:00 UTC	45	Post-Tropical
Total			33.8975

09L.Nine

Nine did not reach tropical storm intensity and therefore did not produce any ACE.

10L.Helene

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
23 August	15:00 UTC	30	0
23 August	21:00 UTC	30	0
24 August	03:00 UTC	35	0.1225
24 August	09:00 UTC	45	0.2025
24 August	15:00 UTC	55	0.3025
24 August	21:00 UTC	70	0.4900
25 August	03:00 UTC	80	0.6400
25 August	09:00 UTC	85	0.7225
25 August	15:00 UTC	90	0.8100
25 August	21:00 UTC	100	1.0000
26 August	03:00 UTC	105	1.1025
26 August	09:00 UTC	105	1.1025
26 August	15:00 UTC	100	1.0000
26 August	21:00 UTC	100	1.0000
27 August	03:00 UTC	100	1.0000
27 August	09:00 UTC	95	0.9025
27 August	15:00 UTC	95	0.9025
27 August	21:00 UTC	90	0.8100
28 August	03:00 UTC	95	0.9025
28 August	09:00 UTC	100	1.0000
28 August	15:00 UTC	110	1.2100
28 August	21:00 UTC	115	1.3225
29 August	03:00 UTC	120	1.4400
29 August	09:00 UTC	125	1.5625
29 August	15:00 UTC	135	1.8225
29 August	21:00 UTC	140	1.9600
30 August	03:00 UTC	145	2.1025
30 August	09:00 UTC	150	2.2500
30 August	15:00 UTC	150	2.2500
30 August	21:00 UTC	145	2.1025
31 August	03:00 UTC	135	1.8225
31 August	09:00 UTC	130	1.6900
31 August	15:00 UTC	125	1.5625
31 August	21:00 UTC	120	1.4400
01 September	03:00 UTC	115	1.3225
01 September	09:00 UTC	110	1.2100
01 September	15:00 UTC	115	1.3225
01 September	21:00 UTC	120	1.4400
02 September	03:00 UTC	125	1.5625
02 September	09:00 UTC	130	1.6900
02 September	15:00 UTC	135	1.8225
02 September	21:00 UTC	135	1.8225
03 September	03:00 UTC	140	1.9600
03 September	09:00 UTC	140	1.9600
03 September	15:00 UTC	145	2.1025
03 September	21:00 UTC	145	2.1025
04 September	03:00 UTC	140	1.9600
04 September	09:00 UTC	135	1.8225
04 September	15:00 UTC	140	1.9600
04 September	21:00 UTC	135	1.8225
05 September	03:00 UTC	120	1.4400
05 September	09:00 UTC	115	1.3225
05 September	15:00 UTC	110	1.2100
05 September	21:00 UTC	105	1.1025
06 September	03:00 UTC	105	1.1025
06 September	09:00 UTC	105	1.1025
06 September	15:00 UTC	105	1.1025
06 September	21:00 UTC	100	1.0000
07 September	03:00 UTC	95	0.9025
07 September	09:00 UTC	95	0.9025
07 September	15:00 UTC	95	0.9025
07 September	21:00 UTC	95	0.9025
08 September	03:00 UTC	95	0.9025
08 September	09:00 UTC	90	0.8100
08 September	15:00 UTC	85	0.7225
08 September	21:00 UTC	80	0.6400
09 September	03:00 UTC	70	0.4900
09 September	09:00 UTC	65	0.4225
09 September	15:00 UTC	65	0.4225
09 September	21:00 UTC	50	0.2500
10 September	03:00 UTC	45	Post-Tropical
Total			84.085

11L.Isaac

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
25 August	21:00 UTC	35	0.1225
26 August	03:00 UTC	35	0.1225
26 August	09:00 UTC	40	0.1600
26 August	15:00 UTC	40	0.1600
26 August	21:00 UTC	45	0.2025
27 August	03:00 UTC	50	0.2500
27 August	09:00 UTC	50	0.2500
27 August	15:00 UTC	55	0.3025
27 August	21:00 UTC	60	0.3600
28 August	03:00 UTC	65	0.4225
28 August	09:00 UTC	70	0.4900
28 August	15:00 UTC	80	0.6400
28 August	21:00 UTC	85	0.7225
29 August	03:00 UTC	85	0.7225
29 August	09:00 UTC	80	0.6400
29 August	15:00 UTC	75	0.5625
29 August	21:00 UTC	70	0.4900
30 August	03:00 UTC	65	0.4225
30 August	09:00 UTC	65	0.4225
30 August	15:00 UTC	60	0.3600
30 August	21:00 UTC	55	0.3025
31 August	03:00 UTC	50	0.2500
31 August	09:00 UTC	45	0.2025
31 August	15:00 UTC	45	0.2025
31 August	21:00 UTC	50	0.2500
01 September	03:00 UTC	60	0.3600
01 September	09:00 UTC	70	0.4900
01 September	15:00 UTC	75	0.5625
01 September	21:00 UTC	85	0.7225
02 September	03:00 UTC	45	0.2025
02 September	09:00 UTC	25	Remnant Low
Total			11.37

12L.Joyce

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
29 August	15:00 UTC	30	0
29 August	21:00 UTC	35	0.1225
30 August	03:00 UTC	40	0.1600
30 August	09:00 UTC	40	0.1600
30 August	15:00 UTC	40	0.1600
30 August	21:00 UTC	40	0.1600
31 August	03:00 UTC	40	0.1600
31 August	09:00 UTC	45	0.2025
31 August	15:00 UTC	45	0.2025
31 August	21:00 UTC	40	0.1600
01 September	03:00 UTC	35	Post-Tropical
Total			1.4875

13L.Kirk

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
04 September	09:00 UTC	30	0
04 September	15:00 UTC	30	0
04 September	21:00 UTC	35	0.1225
05 September	03:00 UTC	40	0.1600
05 September	09:00 UTC	40	0.1600
05 September	15:00 UTC	45	0.2025
05 September	21:00 UTC	55	0.3025
06 September	03:00 UTC	60	0.3600
06 September	09:00 UTC	60	0.3600
06 September	15:00 UTC	65	0.4225
06 September	21:00 UTC	80	0.6400
07 September	03:00 UTC	85	0.7225
07 September	09:00 UTC	90	0.8100
07 September	15:00 UTC	105	1.1025
07 September	21:00 UTC	75	0.5625
08 September	03:00 UTC	50	0.2500
08 September	09:00 UTC	40	0.1600
08 September	15:00 UTC	35	0.1225
08 September	21:00 UTC	30	0
09 September	03:00 UTC	25	Remnant Low
Total			6.46

14L.Leslie

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
13 September	15:00 UTC	40	0.1600
13 September	21:00 UTC	40	0.1600
14 September	03:00 UTC	45	0.2025
14 September	09:00 UTC	45	0.2025
14 September	15:00 UTC	45	0.2025
14 September	21:00 UTC	50	0.2500
15 September	03:00 UTC	50	0.2500
15 September	09:00 UTC	55	0.3025
15 September	15:00 UTC	60	0.3600
15 September	21:00 UTC	65	0.4225
16 September	03:00 UTC	60	0.3600
16 September	09:00 UTC	50	0.2500
16 September	15:00 UTC	40	0.1600
16 September	21:00 UTC	35	Post-Tropical
Total			3.2825

15L.Michael

Date	Time	Maximum Sustained Winds (kt)	ACE (104 kt2)
21 September	15:00 UTC	30	0
21 September	21:00 UTC	30	0
22 September	03:00 UTC	30	0
22 September	09:00 UTC	40	0.1600
22 September	15:00 UTC	40	0.1600
22 September	21:00 UTC	45	0.2025
23 September	03:00 UTC	50	0.2500
23 September	09:00 UTC	55	0.3025
23 September	15:00 UTC	60	0.3600
23 September	21:00 UTC	60	0.3600
24 September	03:00 UTC	55	0.3025
24 September	09:00 UTC	50	0.2500
24 September	15:00 UTC	45	Post-Tropical
Total			2.3475

Season total

Storm	ACE (104 kt2)
01L (One)	0.0000
02L (Alberto)	0.4050
03L (Beryl)	4.5900
04L (Chris)	2.4400
05L (Debby)	0.7300
06L (Ernesto)	14.2225
07L (Florence)	2.6425
08L (Gordon)	33.8975
09L (Nine)	0.0000
10L (Helene)	84.0850
11L (Isaac)	11.3700
12L (Joyce)	1.4875
13L (Kirk)	6.4600
14L (Leslie)	3.2825
15L (Michael)	2.3475
Total	167.9600