2007 Western North Pacific Ocean Tropical Storms and Typhoons

Tropical Cyclone Cyclogenesis Date Cyclolysis Date Highest Saffir-Simpson Category Maximum 6-hr Sustained Wind (kt) Maximum 6-hr Wind Gust (kt) Accumulated Cyclone Energy (ACE*) Index (kt2) Landfall Information (date, location and sustained winds)
Kong-Rey 3/31/07 4/5/07 Cat 2 90 110 6.5425 x 104
Yutu 5/17/07 5/23/07 Cat 4 125 150 16.0131 x 104
Toraji 7/04/07 7/06/07 TS 35 45 .5800 x 104 7/5/07 - Hainan Is. (35 kt)
7/5/07 - Nanjing Province, China (35 kt)
Man-Yi 7/08/07 7/15/07 Cat 4 135 160 20.6306 x 104 7/13/07 - Island of Okinawa, Japan (86 kt)
Usagi 7/28/07 8/4/07 Cat 4 120 145 15.7906 x 104
Pabuk 8/05/07 8/09/07 Cat 1 65 80 4.3431 x 104
Wutip 8/08/07 8/09/07 TS 35 45 .5456 x 104
Sepat 8/12/07 8/19/07 Cat 5 140 170 28.1075 x 104 8/17/07 - Island of Taiwan (95 kt)
Fitow 8/29/07 9/07/07 Cat 2 85 105 19.9350 x 104 9/06/07 - Cost of Japan (75 kt)
Danas 9/07/07 9/12/07 TS 60 75 4.7025 x 104
Nari 9/13/07 9/17/07 Cat 4 120 145 11.7831 x 104 9/16/07 - South Korea (70 kt)
Wipha 9/16/07 9/19/07 Cat 4 135 165 12.4375 x 104 9/19/07 - East China Province (70 kt)
Francisco 9/23/07 9/24/07 TS 45 55 .8100 x 104
Lekima 9/30/07 10/03/07 Cat 1 70 85 4.9588 x 104 10/02/07 - Central Vietnam (63 kt)
Krosa 10/01/07 10/08/07 Cat 4 130 160 24.6450 x 104 10/06/07 - Taiwan (43 kt)
10/07/07 - border of Fujian and Zhejiang, China (68 kt)
Lingling 10/12/07 10/13/07 TS 40 50 .6500 x 104
Kajiki 10/19/07 10/22/07 Cat 3 110 135 8.9075 x 104
Faxai 10/26/07 10/27/07 TS 40 50 .2825 x 104
Peipah 11/03/07 11/07/07 Cat 1 75 90 6.5900 x 104
Tapah 11/12/07 11/12/07 TS 35 45 .2450 x 104
Hagibis 11/19/07 11/25/07 Cat 2 85 105 7.8650 x 104
Mitag 11/20/07 11/27/07 Cat 2 95 115 14.4200 x 104 11/21/07 - northern Philippines (85 kt)
*The (ACE) Index calculations are based on preliminary data.



*The Accumulated Cyclone Energy (ACE) Index is calculated by summing the squares of the estimated 6-hourly maximum sustained wind speed in knots (Vmax2) for all periods in which the tropical cyclone is a tropical storm or greater intensity (sustained winds of 34 kt or greater). Note that the official NOAA definition of the ACE Index does not include those periods when the system is characterized as sub-tropical. However, we are including this information to allow for comparison between individual cyclones across all basins, many of which contain records which inadequately distinguish between tropical and subtropical cyclones. For a complete description of the ACE Index see Bell and Chelliah (2006), Journal of Climate (19) 590-612.


The Saffir-Simpson Scale for Tropical Cyclones

Category Miles Per Hour (mph) Knots (kt) Kilometers Per Hour (km hr-1)
Tropical Storm (TS)
 39-73 34-63 63-118
Cat 1
 74-95 64-82 119-153
Cat 2
 96-110 83-95 154-177
Cat 3
 111-130 96-113 178-209
Cat 4
 131-155 114-135 210-249
Cat 5
 156 or greater 136 or greater 250 or greater