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Jasper Deng (talk | contribs) →02E.Aletta: sadly the special advisory doesn't count for ACE |
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|[http://www.nhc.noaa.gov/archive/2018/ep02/ep022018.public.009.shtml 9]||7 June||align="right"|9 pm MDT||align="center"|85||align="center"|0.7225 |
|[http://www.nhc.noaa.gov/archive/2018/ep02/ep022018.public.009.shtml 9]||7 June||align="right"|9 pm MDT||align="center"|85||align="center"|0.7225 |
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|[http://www.nhc.noaa.gov/archive/2018/ep02/ep022018.public.010.shtml 10]||8 June||align="right"|12 am MDT||align="center"|105||align="center"|''Special'' |
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|'''Total'''|| || || ||align="center"|'''{{#expr:0.16*3+0.2025+0.3025+0.36+0.4225+0.7225}}''' |
|'''Total'''|| || || ||align="center"|'''{{#expr:0.16*3+0.2025+0.3025+0.36+0.4225+0.7225}}''' |
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Revision as of 06:28, 8 June 2018
This is the page for calculating the Accumulated cyclone energy for the 2018 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,
where vmax is estimated sustained wind speed in knots.
Operational (Advisories)
01E.One-E
| Adv. | Date | Time | Maximum Sustained Winds (kt) | ACE (104 kt2) |
|---|---|---|---|---|
| 1 | 10 May | 2 pm PDT | 30 | 0 |
| 2 | 10 May | 8 pm PDT | 30 | 0 |
| 3 | 11 May | 2 am PDT | 30 | 0 |
| 4 | 11 May | 8 am PDT | 30 | 0 |
| 5 | 11 May | 2 pm PDT | 25 | 0 |
| 6 | 11 May | 8 pm PDT | 25 | Post-Trop. |
| Total | 0 |
02E.Aletta
| Adv. | Date | Time | Maximum Sustained Winds (kt) | ACE (104 kt2) |
|---|---|---|---|---|
| 1 | 5 June | 10 pm CDT | 30 | 0 |
| 2 | 6 June | 3 am MDT | 40 | 0.1600 |
| 3 | 6 June | 9 am MDT | 40 | 0.1600 |
| 4 | 6 June | 3 pm MDT | 40 | 0.1600 |
| 5 | 6 June | 9 pm MDT | 45 | 0.2025 |
| 6 | 7 June | 3 am MDT | 55 | 0.3025 |
| 7 | 7 June | 9 am MDT | 60 | 0.3600 |
| 8 | 7 June | 3 pm MDT | 65 | 0.4225 |
| 9 | 7 June | 9 pm MDT | 85 | 0.7225 |
| 10 | 8 June | 12 am MDT | 105 | Special |
| Total | 2.49 |
Best Track (Tropical Cyclone Reports)
No storms yet
Season total
| Storm | Type | ACE (104 kt2) |
|---|---|---|
| 01E (One-E) | Operational | 0.0000 |
| 02E (Aletta) | Operational | 2.4900 |
| Total | 2.49 |
References
- ^ Stacy R. Stewart (January 6, 2006). Tropical Storm Zeta Discussion Number 30 (Report). National Hurricane Center. Retrieved May 8, 2018.