Tropical Storm Utor (2001)

Severe Tropical Storm Utor (Feria)
Tropical Storm Utor shortly after peak intensity on July 5
Meteorological history
FormedJuly 1, 2001
DissipatedJuly 7, 2001
Severe tropical storm
10-minute sustained (JMA)
Highest winds110 km/h (70 mph)
Lowest pressure960 hPa (mbar); 28.35 inHg
Category 1-equivalent typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds150 km/h (90 mph)
Lowest pressure963 hPa (mbar); 28.44 inHg
Overall effects
Fatalities223 total
Damage$2.81 billion (2001 USD)
Areas affectedPhilippines, China and Taiwan
IBTrACS
Part of the 2001 Pacific typhoon season

Severe Tropical Storm Utor,[nb 1] known in the Philippines as Typhoon Feria, was a large and deadly system that caused heavy rains and landslides throughout the Philippines, Taiwan, and China in early-July 2001.[2][3] The eighth tropical depression and fourth named storm of the 2001 Pacific typhoon season, Utor formed on July 1 and intensified into a tropical storm shortly after. Utor was upgraded to a typhoon by the JTWC on July 3, and a day later, Utor was estimated to have peaked with 10-min winds of 110 km/h (70 mph), with the JTWC estimating 1-min winds of 150 km/h (95 mph). After passing just north of Luzon, Utor began to weaken, before making landfall on the district of Dapeng as a minimal typhoon.

In Philippines, 188 people were killed, including 29 people in Baguio. Damage was estimated at $70.3 million. In China, 33 deaths were reported, including 23 in Guangdong and 10 in Guangxi. In Hong Kong, 87 flights were canceled.

Meteorological history

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
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
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

At 21:30 UTC on June 26, the Joint Typhoon Warning Center (JTWC) began monitoring a system in the Western Pacific Ocean. On June 29 at 12:30 UTC, the JTWC issued a Tropical Cyclone Formation Alert (TCFA) on the system.[3] The system continued moving to the southwest and on July 1 at 0:00 UTC both the Japan Meteorological Agency (JMA) and the JTWC upgraded the system to a tropical storm, with the JMA giving it the name Utor.[4] Shortly after being named, Utor abruptly turned to the north, passing just west of the island of Yap. On the next day at 6:00 UTC, Utor entered the Philippine Area of Responsibility and was named Feria by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), which also began issuing advisories.[5] Utor steered northwestward as it was gradually strengthening, being upgraded to a typhoon by the JTWC east of Luzon on July 3.[4] The JMA followed suit, upgrading it to a severe tropical storm.[6] Utor continued to strengthen as it continued northwestward, and on July 4, Utor made its closest approach to the island of Luzon, peaking in the process with 10-min winds of 110 km/h (70 mph), with the JTWC estimating 1-min winds of 150 km/h (95 mph).[6][3] Utor developed a ragged eye during peak intensity, with the island of Calayan being in the eye.[3][4] After peak intensity, Utor slowed down slightly, beginning to weaken as it approached the Chinese province of Guangdong. On July 6 at 0:00 UTC, Utor made landfall on the district of Dapeng as a minimal typhoon, quickly weakening over land. At 18:00 UTC, the JTWC issued its final warning on the system, and the JMA followed suit not long after.[3] Utor dissipated over the autonomous region of Guangxi.[2]

Impacts

Philippines

Wettest tropical cyclones and their remnants in the Philippine islands
Highest-known totals
Precipitation Storm Location Ref.
Rank mm in
12210.087.01July 1911 cycloneBaguio[7]
21854.373.00Pepeng (Parma) (2009)Baguio[8]
31216.047.86Trining (Carla) (1967)Baguio[7]
41116.043.94Iliang (Zeb) (1998)La Trinidad, Benguet[9]
51085.842.74Feria (Utor) (2001)Baguio[10]
61077.842.43Lando (Koppu) (2015)Baguio[8]
71012.739.87Igme (Mindulle) (2004)[11]
8902.035.51Dante (Kujira) (2009)[12]
9879.934.64September 1929 typhoonVirac, Catanduanes[13]
10869.634.24Openg (Dinah) (1977)Western Luzon[14]

Overall, 188 people were killed, 241 were injured, and 44 were reported missing. A total of 12,774 homes were damaged, and 39,147 homes were partially damaged. Total damage was estimated at $70.3 million (₱3.5 billion).[nb 2][15] Utor, while not a very strong storm, brought heavy rain causing many landslides and flooding throughout the countries it affected. Almost 1 million people spread out over 20 provinces in the Philippines were affected by the typhoon.[3] At least 17 landslides occurred throughout the Philippines.[4]

In Baguio, the storm killed 29 people and injured 44 others,[16] rainfall from Utor set a new 24-hour rain record.[4] One person was died in Bokod. Nine people were reported missing in Atok, Benguet. Three people were missing in Tublay. Two people were reported missing in Tuba, Benguet. Flooding affected 14 villages across Minalin, Macabebe, and Santo Tomas towns in Pampanga, with water levels reaching a minimum of 2 ft (0.61 m). The storm caused 14 people were killed in Ilocos Sur. 12 people were killed in Pangasinan, including five people in Mangaldan. In Abra, Six people were reported dead. Two people were killed in Zambales. In Mountain Province, two people were reported killed. In Ifugao, damage to crops was estimated at ₱21.06 million. In Cagayan and Isabela Provinces, agricultural damage was estimated at ₱254 million.[16] Due to the effects of the storm, on August 13, President Gloria Macapagal Arroyo declared a state of calamity in the Ilocos Region and in the Cordillera Administrative Region.[17]

Hong Kong and China

During Utor's passage, a 980 hPa reading was recorded in Hong Kong.[4] A total of 87 flights were canceled and 402 more were delayed due to the storm on July 6 in Hong Kong, with crops, roads, power lines, and other infrastructure in Guangdong being heavily damaged.[18][19] Overall, 33 people were killed and 104,150 homes were destroyed across Guangdong and Guangxi. A total of 23 people were killed, 1448 were injured, and damages in Guangdong amounted to ¥6.7 billion (US$813 million) (2001 USD).[2][4] In Guangxi, economic losses were estimated at ¥16 billion (US$1.93 billion) (2001 USD), with 10 people being killed and another 6,850 people injured. In Nanning, the Yong River rose to 5.4 meters above its danger level, the highest it has reached in 50 years.[4]

Taiwan

Agricultural losses in Taiwan amounted to NT$68 million (US$2 thousand) (2001 USD). Two people were killed and six were injured due to torrential rains and strong winds.[2]

Notes

  1. ↑ The name Utor (Marshallese: uto̧r, [wudˠɒrʷ]) was contributed by the United States and means squall line in Marshallese.[1]
  2. ↑ Money values converted via Pacific Exchange Rate Service with an exchange rate for 2001

References

  1. ↑ "List of names for tropical cyclones adopted by the Typhoon Committee for the western North Pacific and the South China Sea". Japan Meteorological Agency. Archived from the original on August 5, 2005. Retrieved April 25, 2026.
  2. 1 2 3 4 "HKO Tropical Cyclones in 2001" (PDF). April 2002. Archived from the original (PDF) on November 4, 2019. Retrieved March 5, 2021.
  3. 1 2 3 4 5 6 2001 Annual Tropical Cyclone Report (PDF) (Report). Retrieved February 16, 2021.
  4. 1 2 3 4 5 6 7 8 "Monthly Global Tropical Cyclone Summary July 2001". australiasevereweather.com. Retrieved February 16, 2021.
  5. ↑ "Typhoon2000.com's STORM LOG on TY UTOR/FERIA/0104 (July 01 - 06, 2001)". typhoon2000.ph. Retrieved March 7, 2021.
  6. 1 2 "JMA Best Track Data" (PDF). Retrieved February 16, 2021.
  7. 1 2 J. L. H. Paulhaus (1973). World Meteorological Organization Operational Hydrology Report No. 1: Manual For Estimation of Probable Maximum Precipitation. World Meteorological Organization. p. 178.
  8. 1 2 Nick Wiltgen (October 21, 2015). "Former Super Typhoon Koppu (Lando) Weakens to Remnant Low over Northern Philippines". The Weather Channel. Retrieved October 21, 2015.
  9. ↑ Guillermo Q. Tabios III; David S. Rojas Jr. Rainfall Duration-Frequency Curve for Ungaged Sites in the High Rainfall, Benguet Mountain Region in the Philippines (PDF) (Report). Kyoto University. Retrieved June 2, 2015.
  10. ↑ Leoncio A. Amadore, Ph.D. Socio-Economic Impacts of Extreme Climatic Events in the Philippines. Retrieved on February 25, 2007.
  11. ↑ Padgett, Gary; Kevin Boyle; John Wallace; Huang Chunliang; Simon Clarke (October 26, 2006). "Monthly Global Tropical Cyclone Summary June 2004". Australian Severe Weather Index. Jimmy Deguara. Retrieved January 13, 2007.
  12. ↑ Steve Lang (May 7, 2009). "Hurricane Season 2009: Kujira (Western Pacific Ocean)". NASA. Retrieved December 23, 2011.
  13. ↑ Coronas, José (September 1929). "Typhoons and Depressions – a Destructive Typhoon Over Southern and Central Luzon on September 2 and 3, 1929" (PDF). Monthly Weather Review. 57 (9). American Meteorological Society: 398–399. Bibcode:1929MWRv...57..398C. doi:10.1175/1520-0493(1929)57<398b:TADDTO>2.0.CO;2. Archived from the original (PDF) on February 25, 2017. Retrieved September 26, 2015.
  14. ↑ Narciso O. Itoralba (December 1981). Annual Tropical Cyclone Report 1977. Philippine Atmospheric, Geophysical and Astronomical Services Administration. p. 65.
  15. ↑ Destructive Typhoons 1970-2003 (Report). National Disaster Coordinating Council. November 9, 2004. Archived from the original on September 29, 2013.
  16. 1 2 Philippine Daily Inquirer Articles:
  17. ↑ "Proclamation No. 81, s. 2001". August 13, 2001. Retrieved March 4, 2021.
  18. ↑ "CNN.com - China, Philippines count cost of Utor's blast - July 8, 2001". CNN. Retrieved February 16, 2021.
  19. ↑ "Typhoon Utor Kills More Than 100". www.cbsnews.com. Retrieved February 16, 2021.
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