Featured Storm – Super Typhoon Fengshen (2002)
Typhoon Fengshen was the strongest storm of the 2002 Pacific typhoon season. It developed on July 13 near the Marshall Islands and rapidly intensified due to its small size. Fengshen went from being a tropical depression to a cyclone in only 6 hours. By July 15, Fengshen was given typhoon status, and after initially moving to the north, it turned toward the northwest. On July 18, the typhoon reached its peak intensity of 185 km/h (115 mph), according to the Japan Meteorological Agency; the Joint Typhoon Warning Center (JTWC) estimated peak winds of 270 km/h (165 mph). Disparities like this between agencies are the driving force behind the creation/purpose of Cyclone Center, and with your help these dissimilarities can be smoothed out. Your classifications are important to us, so we ask that you please take a moment and provide your input on Typhoon Fengshen to help us determine its peak winds.
The JTWC estimated that Fengshen was a super typhoon for five days, which broke the record for longest duration at that intensity. This record would later be tied by Typhoon Ioke in 2006. While approaching peak intensity, Typhoon Fengshen underwent the Fujiwhara effect with Typhoon Fung-wong, causing the latter storm to loop to its south. The Fujiwhara effect is when two nearby cyclonic vortices orbit each other and close the distance between the circulations of their corresponding low-pressure areas. Interaction of smaller circulations can cause the development of a larger cyclone, or cause two cyclones to merge into one.
Fengshen gradually weakened while approaching Japan, and it crossed over the country’s Ōsumi Islands on July 25 as a severe tropical storm. The typhoon swept a freighter ashore, killing four of the 19 crew members aboard. In Japan, Fengshen dropped heavy rainfall that caused mudslides and left $4 million (¥475 million Japanese Yen) in crop damage. After affecting Japan, Fengshen weakened in the Yellow Sea to a tropical depression, before moving across China’s Shandong Peninsula and dissipating on July 28. The typhoon produced strong winds and heavy rain in Japan. A station in Miyazaki Prefecture reported the highest rainfall in Japan with a total of 717 mm (28.2 in). Most of the precipitation fell in a 24 hour period, and the heaviest 1 hour total was 52 mm (2.0 in) in Taira, Toyama. The remnants of Fengshen produced heavy rainfall in northeastern China. The storm affected the capital city of Beijing, becoming the first storm to produce significant impact there since Typhoon Rita in 1972.
– Kyle Gayan is an undergraduate student in Atmospheric Sciences at the University of North Carolina at Asheville and is also a retired USAF Master Sergeant; his 20 years of service was spent exclusively in the weather career field. He recently joined the Cyclone Center team as a classifier and contributor to our social media.
CycloneCenter Participation for January 2014
January saw more classifications than December, largely due to a resurgence of active classifiers. This month, baha23 stepped up and accomplished a whopping 3000+ classifications to lead the pack by a wide margin. There were also some surprises in the active user list. In September 2012, Atomic7732 was our top classifier in our first month, but had been relatively quiet since. In January, Atomic7732 returned to cyclone center and barely missed the top 10 by only 4 classifications!
January also saw four first-time top tenners: jasony23, sfrudy, user:”205400″, and Gemmabeta. Congratulations to all of you.
Also, for the monthly leaders, baha23 moved into 2nd place having been the monthly leader 3 times. baha23 is only 1 month behind bretarn, who has 4 months atop the monthly leader board.
We are grateful to both our longtime consistent scientists – like baha23 and bretarn – and are also very excited about new scientists like sfrudy and Gemmabeta.
For January 2014, we had 10,523 classifications of 87 storms from 651 citizen scientists.
Top 10 most active citizen scientists for January 2014.
Classifications | Scientist |
3064 | baha23 |
712 | bretarn |
305 | velthove |
196 | peterthorne |
193 | tdw1203 |
169 | sfrudy |
165 | 205400 |
135 | Gemmabeta |
129 | jasony23 |
118 | Atms345_KJD |
Most active citizen scientists each month.
Month |
Number |
User |
Sep 2012 |
658 |
atomic7732 |
Oct 2012 |
3667 |
chrisotahal |
Nov 2012 |
3276 |
bretarn |
Dec 2012 |
2747 |
bretarn |
Jan 2013 |
2555 |
shocko61 |
Feb 2013 |
1714 |
shocko61 |
Mar 2013 |
1998 |
bretarn |
Apr 2013 |
1474 |
ATMS103LGB |
May 2013 |
1451 |
astroboyOW |
Jun 2013 |
1084 |
bretarn |
Jul 2013 |
976 |
Geeklette |
Aug 2013 |
1051 |
skl6284 |
Sep 2013 |
431 |
tdw1203 |
Oct 2013 |
2733 |
baha23 |
Nov 2013 |
3737 |
baha23 |
Dec 2013 |
500 |
Atms345_ssc |
Jan 2014 |
3064 |
Baha23 |
Most active citizen scientists overall.
Classifications | Scientist |
20767 | bretarn |
10227 | shocko61 |
9536 | baha23 |
5006 | astroboyOW |
3988 | chrisotahal |
3876 | peterthorne |
3426 | cch001 |
3122 | tpatch |
2574 | velthove |
1879 | tdw1203 |
Thanks for making CycloneCenter.org a success! I hope to see your user ID here next month!