Typhoon Krosa (2007)

Map key

Saffir–Simpson scale

  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown

Storm type

Tropical cyclone

Subtropical cyclone

Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

In late September, a new system formed east of the Philippines, leading to a Tropical Cyclone Formation Alert by JTWC. ^[3] PAGASA declared it a tropical depression and assigned a local name Ineng early on October 1, and the JMA ^[4] and JTWC ^[5] soon followed.

It was upgraded to a tropical storm early on October 2 by JMA, receiving the international name Krosa . ^[4] Rapid intensification took place on October 2 and it was upgraded to a typhoon by the JTWC by midday. ^[5] As it intensified, it gained a wide, ragged eye and began to track to the west, becoming a typhoon by the JMA early on October 3. It continued to rapidly intensify that day before leveling off as a Category 4-equivalent typhoon on October 4. ^[3] Fluctuations in intensity soon followed as Krosa approached Taiwan, as the JMA upgraded it to 105 knots (194 km/h) and the JTWC into a super typhoon early on October 5. ^{[4] [5]} It slowly weakened afterward before making landfall in northeastern Taiwan on October 6. After landfall in Taiwan, Krosa quickly weakened into Category 1 typhoon as it approached China. ^[5] Krosa would make landfall shortly afterwards between Zhejiang and Fujian around that intensity. JMA downgraded Krosa into a severe tropical storm. ^[4] Early on October 7, JMA would further downgrade Krosa into a tropical storm, ^[4] and JTWC followed suit, as Krosa weakened rapidly. ^[5] Krosa would parallel the coast of China as it turned east-northeast, and emerged in the sea soon after. As sea surface temperatures were cold and could not sustain a tropical cyclone, Krosa began transitioning into an extratropical cyclone. ^[3] Around noon October 8, JMA published the last tropical cyclone warning on Krosa as it weakened into a tropical depression, and JTWC followed suit six hours later. ^[3] The extratropical remnants of Krosa crossed the International Dateline on October 12.

Preparations

Taiwan

Hundreds of thousands of people had to evacuate from the oncoming typhoon. Several flights and transport services were cancelled due to the disruption of the typhoon. ^[6]

China

An evacuation of 730,000 people from China's Zhejiang and Fujian provinces was ordered on the evening of October 6. ^[7] More than 600,000 people evacuated after landfall in China, bringing the total evacuees into 1.4 million people. In Shanghai, 8,800 workers had to stay out of the coasts despite Krosa passing well south of the city, and more than 40 flights to Shanghai were cancelled. ^[8]

Impact

Destroyed sports gym in Taiwan

Taiwan

Rains from Krosa caused flooding which led to blocked roads along with downed trees. These blocked roads caused the death of a newborn who needed medical attention. Another death was directly caused by landfall, ^{[2] [6]} while isolated incidents caused by high winds from the typhoon caused deaths of another two people. ^[2] Taiwan's National Fire Agency reported that a traffic incident caused another death, bringing the death toll to five people. ^[2] Additionally, Krosa injured 67 people and knocked out power to another 2 million people when it made landfall as a Category 4 typhoon. ^[2]

China

In China, severe structural damage and power outages were reported in the port city of Wenzhou, and 17 people were reported injured. No fatalities were reported. ^[2] According to Government of China, more than 7.4 million people were affected by the typhoon. Rains and winds from Krosa caused the destruction of 3,500 homes. ^[8]

See also

• Tropical cyclones portal

• Other tropical cyclones named Krosa
• Other tropical cyclones named Ineng
• Typhoon Wipha (2007)
• Typhoon Bilis (2000)

References

1. FlorCruz, Jaime. "People, politics ease China's disaster evacuation efforts". CNN . Retrieved 4 October 2020.
2. "Typhoon hits China, then weakens to storm". Reuters. October 7, 2007.
3. "Significant Tropical Weather Advisory for the Western and South Pacific Oceans". Joint Typhoon Warning Center. October 1, 2007. Retrieved October 4, 2020.
4. "Annual Report on Activities of the RSMC Tokyo — Typhoon Center 2007" (PDF). Japan Meteorological Agency. September 27, 2008. Retrieved October 4, 2020.
5. Joint Typhoon Warning Center (2008). "Super Typhoon 17W (Krosa) Best Track". Archived from the original on September 16, 2012. Retrieved October 4, 2020.
6. "Após deixar 5 mortos em passagem por Taiwan, tufão "Krosa" chega à China". noticias.uol.com.br (in Portuguese).
7. "After Pounding Taiwan, Typhoon Krosa Approaches Coast of China". Voice of America News. October 6, 2007. Archived from the original on October 11, 2007. Retrieved October 6, 2007.
8. "Tropical Storm Krosa back to sea, but rains continue in east China". news.xinhuanet.com. Archived from the original on 2012-10-10.

External links

• JMA General Information of Typhoon Krosa (0715) from Digital Typhoon
• JMA Best Track Data of Typhoon Krosa (0715) (in Japanese)
• JMA Best Track Data (Graphics) of Typhoon Krosa (0715)
• JMA Best Track Data (Text)
• JTWC Best Track Data of Super Typhoon 17W (Krosa)
• 17W.KROSA ^{[ dead link ‍]} from the U.S. Naval Research Laboratory

Typhoon Krosa (Ineng)

Typhoon Krosa approaching Taiwan on October 5

v t e Tropical cyclones of the 2007 Pacific typhoon season
	TD TD TD TD TY Kong-rey VSTY Yutu TD TD TD TD TS Toraji VSTY Man-yi TD Cosme VSTY Usagi TD 06W TY Pabuk TS Wutip TD TD TD TD VITY Sepat TD TD TD TD TD TD TD TD TY Fitow TD TD STS Danas TD TD VSTY Nari VSTY Wipha TD 14W TS Francisco TD TD TD TD STS Lekima TS Haiyan VITY Krosa STS Podul TS Lingling VSTY Kajiki STS Faxai TD TD TY Peipah TD TD TS Tapah TY Hagibis TY Mitag TD 25W TD 26W
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