Tropical Storm Jangmi (2014)

Tropical Storm Jangmi (pronounced [tɕaŋ.mi]), known in the Philippines as Tropical Storm Seniang, was a weak but destructive tropical cyclone that impacted the Philippines during late December 2014. It produced heavy rainfall which caused serious flooding. Flooding in Philippines caused 66 deaths and at least $28.3 million damage.[1]

Tropical Storm Jangmi (Seniang)
Jangmi over the Philippines on December 29
Meteorological history
FormedDecember 28, 2014
DissipatedJanuary 1, 2015
Tropical storm
10-minute sustained (JMA)
Highest winds75 km/h (45 mph)
Lowest pressure996 hPa (mbar); 29.41 inHg
Tropical storm
1-minute sustained (SSHWS/JTWC)
Highest winds85 km/h (50 mph)
Lowest pressure989 hPa (mbar); 29.21 inHg
Overall effects
Fatalities66
Missing6
Damage$28.4 million (2015 USD)
Areas affectedPhilippines, Borneo
IBTrACS
Part of the 2014 Pacific typhoon season

The last of twenty-three named storms of the annual typhoon season, the late-season cyclone remained weak throughout most of its lifespan. The tropical storm reached peak strength on December 29 near Surigao del Sur, Mindanao.[2] Jangmi dissipated just before the 2015 Pacific typhoon season started.

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

On December 26, both the JTWC and PAGASA started to monitor a tropical disturbance well east of Mindanao, Philippines just where Sinlaku formed. On December 27, the JMA started to monitor a tropical depression, that had developed within favourable conditions for further development, about 630 km (390 mi) to the west of Koror, Palau.[3][4] Over the next day the depression gradually developed further and was named Seniang by PAGASA as it moved northwesterly along a ridge of high pressure, while atmospheric convection wrapped into the system's low level circulation centre.[5][6] Both the JTWC and PAGASA upgraded the depression to a tropical storm late on the same day.

Early on December 29, the JMA upgraded the system to a tropical storm, naming it Jangmi. At the time of the upgrade, Jangmi made landfall over the town of Hinatuan in the province of Surigao del Sur. The storm traversed the Caraga region, and exited the landmass of Mindanao during the afternoon hours of the same day, as it had accelerated to the northwest. Late on December 30, Jangmi made landfall over Cebu and southern Negros, right before the JTWC downgraded it to a tropical depression. On December 31, the JTWC issued the final warning to Jangmi, and the JMA downgraded it to a tropical depression at noon the same day. The system was last noted by the JMA and the JTWC on January 1, 2015, dissipating over Borneo, just before the 2015 Pacific typhoon season started.

Highest Public Storm Warning Signal
PSWS#LUZONVISAYASMINDANAO
PSWS #2NONEBohol, SiquijorSurigao del Sur, Surigao del Norte, Siargao Island, Agusan del Norte, Agusan del Sur, Misamis Oriental, Camiguin
PSWS #1NONELeyte, Southern Leyte, Camotes Island, Cebu, Negros Occidental, Negros OrientalDinagat Province, Compostela Valley, northern portion of Davao Oriental, Davao del Norte, Bukidnon, Lanao del Norte, Misamis Occidental, Zamboanga del Norte

Impact

Tropical Storm Jangmi made landfall in Surigao del Sur on December 29.[2][7] It produced heavy rains and caused flooding in Southern Philippines.[8] The storm caused 66 deaths with 6 missing, overall damage in the Philippines were at ₱1.27 billion (US$28.4 million).[1]

In Malacañang, PCOO Secretary Coloma defended the government from criticism that not enough was done to prevent the high casualty count, saying agencies gave timely warnings and that President Aquino had directed government to mobilize all resources to help the victims.[8]

Retirement

Because the total cost of damage reached at least ₱ 1 billion, the name Seniang was retired by PAGASA, and replaced by Samuel for the 2018 season.[9][10]

See also

References
  1. "SitRep No. 22 re Effects of Tropical Storm SENIANG" (PDF). National Disaster Risk Reduction and Management Council. January 10, 2015. Archived from the original (PDF) on January 10, 2015. Retrieved January 10, 2015.
  2. "'Seniang' now a tropical storm; makes landfall". Sun Star. December 29, 2014. Retrieved January 9, 2015.
  3. "JMA WWJP25 Warning and Summary December 27, 2014 06z". Japan Meteorological Agency. December 27, 2014. Archived from the original on December 27, 2014. Retrieved January 1, 2015.
  4. Joint Typhoon Warning Center. "Significant Tropical Weather Advisory for the Western and South Pacific Oceans December 27, 2014 06z". United States Navy, United States Airforce. Archived from the original on December 27, 2014. Retrieved January 1, 2015.
  5. Joint Typhoon Warning Center (December 28, 2014). "Prognostic Reasoning for Tropical Depression 23W December 28, 2014 03z". United States Navy, United States Airforce. Archived from the original on December 28, 2014. Retrieved January 1, 2015.
  6. "Severe Weather Bulletin Number One Tropical Cyclone Warning: Tropical Depression "Seniang", December 27, 2014 21z". Philippine Atmospheric, Geophysical and Astronomical Services Administration. July 5, 2014. Archived from the original on December 30, 2014. Retrieved January 2, 2015.
  7. "SitRep No. 2 re Effects of Tropical Storm SENIANG" (PDF). National Disaster Risk Reduction and Management Council. December 29, 2014. Retrieved January 8, 2015.
  8. "At least 54 dead, mostly from slides, floods in Visayas, Mindanao". Interaksyon. December 31, 2014. Archived from the original on January 1, 2015. Retrieved January 1, 2015.
  9. "Pagasa kills names of killer typhoons". Philippine Daily Inquirer. February 8, 2015. Archived from the original on February 9, 2015. Retrieved February 9, 2015.
  10. "Philippine Tropical Cyclone Names". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Archived from the original on February 1, 2015. Retrieved February 1, 2015.
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