Talk:2014 Pacific typhoon season/ACE calcs

This is the page for calculating the Accumulated Cyclone Energy for the 2014 Pacific typhoon season using data from the Japan Meteorological Agency.

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. ^[1]

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

where v_max is estimated sustained wind speed in knots.

JTWC Advisories

01W.Lingling (Best Track)

Date	Time	Maximum Sustained Winds (kt)
January 18	0000 UTC	25
January 18	0600 UTC	30
January 18	1200 UTC	30
January 18	1800 UTC	25
January 19	0000 UTC	25
January 19	0600 UTC	25
January 19	1200 UTC	25
Total

02W.Kajiki (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
January 30	1800 UTC	25	0
January 31	0000 UTC	30	0
January 31	0600 UTC	35	0.1225
January 31	1200 UTC	35	0.1225
January 31	1800 UTC	30	0
Total			0.245

03W.Faxai (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
February 28	0000 UTC	25	0
February 28	0600 UTC	30	0
February 28	1200 UTC	30	0
February 28	1800 UTC	35	0.1225
March 1	0000 UTC	35	0.1225
March 1	0600 UTC	35	0.1225
March 1	1200 UTC	40	0.1600
March 1	1800 UTC	45	0.2025
March 2	0000 UTC	45	0.2025
March 2	0600 UTC	45	0.2025
March 2	1200 UTC	45	0.2025
March 2	1800 UTC	45	0.2025
March 3	0000 UTC	45	0.2025
March 3	0600 UTC	50	0.2500
March 3	1200 UTC	50	0.2500
March 3	1800 UTC	55	0.3025
March 4	0000 UTC	60	0.3600
March 4	0600 UTC	60	0.3600
March 4	1200 UTC	65	0.4225
March 4	1800 UTC	80	0.6400
March 5	0000 UTC	75	0.5625
March 5	0600 UTC	60	0.3600
March 5	1200 UTC	50	Extra-tropical
Total			5.25

04W.Four (Best Track)

Date	Time	Maximum Sustained Winds (kt)
March 22	0000 UTC	25
March 22	0600 UTC	25
March 22	1200 UTC	25
Total

05W.Peipah (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
April 3	1200 UTC	25	0
April 3	1800 UTC	30	0
April 4	0000 UTC	35	0.1225
April 4	0600 UTC	35	0.1225
April 4	1200 UTC	35	0.1225
April 4	1800 UTC	35	0.1225
April 5	0000 UTC	35	0.1225
April 5	0600 UTC	35	0.1225
April 5	1200 UTC	25	0
Total			0.735

06W.Tapah (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
April 27	1200 UTC	30	0
April 27	1800 UTC	40	0.1600
April 28	0000 UTC	45	0.2025
April 28	0600 UTC	50	0.2500
April 28	1200 UTC	55	0.3025
April 28	1800 UTC	60	0.3600
April 29	0000 UTC	65	0.4225
April 29	0600 UTC	70	0.4900
April 29	1200 UTC	70	0.4900
April 29	1800 UTC	65	0.4225
April 30	0000 UTC	65	0.4225
April 30	0600 UTC	55	0.3025
April 30	1200 UTC	50	0.2500
April 30	1800 UTC	45	0.2025
May 1	0000 UTC	35	0.1225
May 1	0600 UTC	30	0
May 1	1200 UTC	30	0
Total			4.4

07W.Tapah (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
June 14	0000 UTC	25	0
June 14	0600 UTC	35	0.1225
June 14	1200 UTC	40	0.1600
June 14	1800 UTC	45	0.2025
June 15	0000 UTC	50	0.2500
June 15	0600 UTC	50	0.2500
June 15	1200 UTC	40	0.1600
June 15	1800 UTC	35	0.1225
June 16	0000 UTC	30	0
June 16	0600 UTC	35	0.1225
June 16	1200 UTC	35	0.1225
June 16	1800 UTC	35	0.1225
June 17	0000 UTC	40	0.1600
June 17	0600 UTC	40	0.1600
June 17	1200 UTC	30	0
June 17	1800 UTC	30	Extra-tropical
Total			1.955

08W.Neoguri (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
July 3	0000 UTC	25	0
July 3	0600 UTC	30	0
July 3	1200 UTC	30	0
July 3	1800 UTC	40	0.1600
July 4	0000 UTC	45	0.2025
July 4	0600 UTC	55	0.3025
July 4	1200 UTC	60	0.3600
July 4	1800 UTC	65	0.4225
July 5	0000 UTC	90	0.8100
July 5	0600 UTC	115	1.3225
July 5	1200 UTC	115	1.3225
July 5	1800 UTC	120	1.4400
July 6	0000 UTC	120	1.4400
July 6	0600 UTC	120	1.4400
July 6	1200 UTC	125	1.5625
July 6	1800 UTC	135	1.8225
July 7	0000 UTC	140	1.9600
July 7	0600 UTC	135	1.8225
July 7	1200 UTC	120	1.4400
July 7	1800 UTC	110	1.2100
July 8	0000 UTC	110	1.2100
July 8	0600 UTC	110	1.2100
July 8	1200 UTC	105	1.1025
July 8	1800 UTC	90	0.8100
July 9	0000 UTC	75	0.5625
July 9	0600 UTC	70	0.4900
July 9	1200 UTC	60	0.3600
July 9	1800 UTC	55	0.3025
July 10	0000 UTC	40	0.1600
July 10	0600 UTC	35	0.1225
July 10	1200 UTC	35	0.1225
Total			22.8425

09W.Rammasun (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
July 10	0600 UTC	25	0
July 10	1200 UTC	25	0
July 10	1800 UTC	30	0
July 11	0000 UTC	30	0
July 11	0600 UTC	30	0
July 11	1200 UTC	30	0
July 11	1800 UTC	30	0
July 12	0000 UTC	30	0
July 12	0600 UTC	30	0
July 12	1200 UTC	35	0.1225
July 12	1800 UTC	35	0.1225
July 13	0000 UTC	35	0.1225
July 13	0600 UTC	35	0.1225
July 13	1200 UTC	40	0.1600
July 13	1800 UTC	45	0.2025
July 14	0000 UTC	55	0.3025
July 14	0600 UTC	65	0.4225
July 14	1200 UTC	75	0.5625
July 14	1800 UTC	80	0.6400
July 15	0000 UTC	90	0.8100
July 15	0600 UTC	100	1.0000
July 15	1200 UTC	115	1.3225
July 15	1800 UTC	105	1.1025
July 16	0000 UTC	90	0.8100
July 16	0600 UTC	80	0.6400
July 16	1200 UTC	80	0.6400
July 16	1800 UTC	80	0.6400
July 17	0000 UTC	85	0.7225
July 17	0600 UTC	95	0.9025
July 17	1200 UTC	105	1.1025
July 17	1800 UTC	125	1.5625
July 18	0000 UTC	130	1.6900
July 18	0600 UTC	140	1.9600
July 18	1200 UTC	125	1.5625
July 18	1800 UTC	115	1.3225
July 19	0000 UTC	100	1.0000
July 19	0600 UTC	75	0.5625
July 19	1200 UTC	55	0.3025
July 19	1800 UTC	35	0.1225
July 20	0000 UTC	25	0
Total			22.5575

10W.Matmo (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
July 17	1200 UTC	30	0
July 17	1800 UTC	35	0.1225
July 18	0000 UTC	35	0.1225
July 18	0600 UTC	35	0.1225
July 18	1200 UTC	40	0.1600
July 18	1800 UTC	45	0.2025
July 19	0000 UTC	55	0.3025
July 19	0600 UTC	65	0.4225
July 19	1200 UTC	65	0.4225
July 19	1800 UTC	65	0.4225
July 20	0000 UTC	65	0.4225
July 20	0600 UTC	65	0.4225
July 20	1200 UTC	65	0.4225
July 20	1800 UTC	70	0.4900
July 21	0000 UTC	70	0.4900
July 21	0600 UTC	70	0.4900
July 21	1200 UTC	75	0.5625
July 21	1800 UTC	80	0.6400
July 22	0000 UTC	80	0.6400
July 22	0600 UTC	85	0.7225
July 22	1200 UTC	85	0.7225
July 22	1800 UTC	80	0.6400
July 23	0000 UTC	70	0.4900
July 23	0600 UTC	65	0.4225
July 23	1200 UTC	45	0.2025
July 23	1800 UTC	35	0.1225
July 24	0000 UTC	25	Low
Total			10.2025

11W.Halong (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
July 28	0600 UTC	25	0
July 28	1200 UTC	30	0
July 28	1800 UTC	35	0.1225
July 29	0000 UTC	45	0.2025
July 29	0600 UTC	50	0.2500
July 29	1200 UTC	55	0.3025
July 29	1800 UTC	55	0.3025
July 30	0000 UTC	55	0.3025
July 30	0600 UTC	55	0.3025
July 30	1200 UTC	55	0.3025
July 30	1800 UTC	55	0.3025
July 31	0000 UTC	55	0.3025
July 31	0600 UTC	55	0.3025
July 31	1200 UTC	55	0.3025
July 31	1800 UTC	55	0.3025
August 1	0000 UTC	55	0.3025
August 1	0600 UTC	60	0.3600
August 1	1200 UTC	60	0.3600
August 1	1800 UTC	75	0.5625
August 2	0000 UTC	100	1.0000
August 2	0600 UTC	120	1.4400
August 2	1200 UTC	140	1.9600
August 2	1800 UTC	140	1.9600
August 3	0000 UTC	140	1.9600
August 3	0600 UTC	135	1.8225
August 3	1200 UTC	130	1.6900
August 3	1800 UTC	125	1.5625
August 4	0000 UTC	115	1.3225
August 4	0600 UTC	105	1.1025
August 4	1200 UTC	100	1.0000
August 4	1800 UTC	95	0.9025
August 5	0000 UTC	90	0.8100
August 5	0600 UTC	90	0.8100
August 5	1200 UTC	85	0.7225
August 5	1800 UTC	80	0.6400
August 6	0000 UTC	80	0.6400
August 6	0600 UTC	85	0.7225
August 6	1200 UTC	85	0.7225
August 6	1800 UTC	90	0.8100
August 7	0000 UTC	85	0.7225
August 7	0600 UTC	75	0.5625
August 7	1200 UTC	75	0.5625
August 7	1800 UTC	75	0.5625
August 8	0000 UTC	75	0.5625
August 8	0600 UTC	75	0.5625
August 8	1200 UTC	70	0.4900
August 8	1800 UTC	70	0.4900
August 9	0000 UTC	70	0.4900
August 9	0600 UTC	70	0.4900
August 9	1200 UTC	65	0.4225
August 9	1800 UTC	65	0.4225
August 10	0000 UTC	55	0.3025
August 10	0600 UTC	45	0.2025
August 10	1200 UTC	40	Extra-tropical
Total			33.94

12W.Nakri (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
August 2	0600 UTC	40	Disturbance
August 2	1200 UTC	35	0.1225
August 2	1800 UTC	35	0.1225
August 3	0000 UTC	30	0
Total			0.245

13W.Fengshen (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
September 7	0000 UTC	30	0
September 7	0600 UTC	35	0.1225
September 7	1200 UTC	45	0.2025
September 7	1800 UTC	50	0.2500
September 8	0000 UTC	55	0.3025
September 8	0600 UTC	55	0.3025
September 8	1200 UTC	55	0.3025
September 8	1800 UTC	65	0.4225
September 9	0000 UTC	60	0.3600
September 9	0600 UTC	55	0.3025
September 9	1200 UTC	55	Extra-tropical
Total			2.5675

14W.Fourteen (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
September 7	0600 UTC	25	0
September 7	1200 UTC	30	0
September 7	1800 UTC	30	0
September 8	0000 UTC	20	Low
Total			0

15W.Kalmaegi (Best Track)

Date	Time	Maximum Sustained Winds (kt)	ACE (10⁴ kt²)
September 11	0600 UTC	25	0
September 11	1200 UTC	25	0
September 11	1800 UTC	30	0
September 12	0000 UTC	30	0
September 12	0600 UTC	35	0.1225
September 12	1200 UTC	40	0.1600
September 12	1800 UTC	50	0.2500
September 13	0000 UTC	55	0.3025
September 13	0600 UTC	60	0.3600
September 13	1200 UTC	65	0.4225
September 13	1800 UTC	65	0.4225
September 14	0000 UTC	70	0.4900
September 14	0600 UTC	70	0.4900
September 14	1200 UTC	70	0.4900
September 14	1800 UTC	65	0.4225
September 15	0000 UTC	65	0.4225
September 15	0600 UTC	65	0.4225
September 15	1200 UTC	70	0.4900
September 15	1800 UTC	70	0.4900
September 16	0000 UTC	75	0.5625
September 16	0600 UTC	80	0.6400
September 16	1200 UTC	75	0.5625
September 16	1800 UTC	65	0.4225
September 17	0000 UTC	55	0.3025
September 17	0600 UTC	35	0.1225
September 17	1200 UTC	20	Low
Total			8.37

16W.Fung-wong (Best Track)

17W.Kammuri (Best Track)

18W.Phanfone (Best Track)

19W.Vongfong (Best Track)

20W.Nuri (Best Track)

21W.Sinlaku (Best Track)

22W.Hagupit (Best Track)

23W.Jangmi (Best Track)

Season total

Storm	Type	ACE (10⁴ kt²)
01W.Lingling	Best Track	0
02W.Kajiki	Best Track	0.2450
03W.Faxai	Best Track	5.2500
04W.Four	Best Track	0
05W.Peipah	Best Track	0.7350
06W.Tapah	Best Track	4.4000
07W.Hagibis	Best Track	1.9550
08W.Neoguri	Best Track	22.8425
09W.Rammasun	Best Track	22.5575
10W.Matmo	Best Track	10.2025
11W.Halong	Best Track	33.9400
12W.Nakri	Best Track	0.2450
07E.Genevieve	Operational
13W.Fengshen	Best Track	2.5675
14W.Fourteen	Best Track	0
15W.Kalmaegi	Best Track	8.3700
16W.Fung-wong	Best Track
17W.Kammuri	Best Track
18W.Phanfone	Best Track
19W.Vongfong	Best Track
20W.Nuri	Best Track
21W.Sinlaku	Best Track
22W.Hagupit	Best Track
23W.Jangmi	Best Track
Total		113.31

|}

^ Last advisory for T.S. Zeta 2005

[1] Last advisory for T.S. Zeta 2005

[1]