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Tropical Depression Kristine (2024)

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Tropical Depression 22W (Kristine)
Kristine in its formative stages on October 21
Meteorological history
FormedOctober 19, 2024
Tropical depression
10-minute sustained (JMA)
Highest winds55 km/h (35 mph)
Lowest pressure998 hPa (mbar); 29.47 inHg
Tropical depression
1-minute sustained (SSHWS/JTWC)
Highest winds55 km/h (35 mph)
Lowest pressure1000 hPa (mbar); 29.53 inHg
Overall effects
Areas affectedPhilippines
Part of the 2024 Pacific typhoon season

Tropical Depression 22W, known in the Philippines as Tropical Depression Kristine, is currently an active tropical cyclone in the Western Pacific Ocean that is affecting the Philippines. Kristine developed into a low-pressure area and later into a tropical depression west of Guam on October 19, moving westward along the southern periphery. After entering the Philippine Area of Responsibility, PAGASA named the depression Kristine on October 20. The storm was embedded within a larger trough that extended from the Philippine Islands eastward almost to Guam. Early the next day, satellite imagery revealed that the depression was exposed, featuring elongated circulation and convective bands wrapping around its center.

Meteorological history

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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

The origins of Tropical Depression Kristine can be traced back to October 19, when the Japan Meteorological Agency (JMA) reported a low-pressure area located 633 km (394 mi) west of Guam.[1] The United States Joint Typhoon Warning Center (JTWC) described it as a very weak vortex with light winds wrapping around the circulation, along with deep moisture fields to the southwest beginning to encircle the vortex.[2] The low-pressure area later moved westward slowly before it was designated as a tropical depression by the JMA.[3] At 15:00 UTC that day, the JTWC issued a tropical cyclone formation alert, indicating a consolidating low-level circulation center bounded by formative convective banding wrapping around its northern and southern edges.[4] The depression was moving westward along the southern periphery of a mid-level subtropical high, which made it favorable for tropical cyclogenesis due to low vertical wind shear, warm sea surface temperatures, and high ocean heat content.[5]

The following day, the JTWC designated the system as 22W, as low-level banding wrapped into the circulation center, with a tightly curved convective band wrapping along the eastern edge of the circulation.[6] After entering the Philippine Area of Responsibility, the depression was named Kristine by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) at 05:00 PHT on October 21 (21:00 UTC on October 20) and was embedded within the larger trough that extended from the Philippine Islands eastward almost to Guam.[7][8] Early the next day, satellite imagery revealed that the depression was exposed, featuring elongated circulation and convective bands wrapping around the center.[9]

Preparations and impact

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PAGASA stated that the wind flow directed towards the circulation of the tropical depression will bring strong to gale-force winds to several regions in the Philippines.[7] Shortly after upgrading the storm, PAGASA issued Tropical Cyclone Wind Signal No. 1 for Aurora, Catanduanes, Masbate, Ticao Island, Burias Island, Camarines Sur, Albay, Sorsogon, Camarines Norte, the northern and eastern portion of Quezon. including Pollilo Islands, Eastern Samar, Northern Samar, Leyte, Biliran, Southern Leyte, Dinagat Islands, Surigao del Norte, Siargao, and Bucas Grande.[10] A red alert warning was issued for the Bicol Region.[11] Classes in some parts of Camarines Norte, Camarines Sur, Laguna, and Oriental Mindoro were suspended due to the storm.[12] The Office of Civil Defense anticipates that the storm will affect approximately 30 million individuals across different regions.[13]

Officials from Batanes and Ilocos Norte expressed concern about the potential for further damage to their provinces due to the expected impact of the tropical depression, especially since these areas were still recovering from Typhoon Krathon (Julian) in 2024.[14] At least 782 passengers were stranded in the Bicol region due to the threats posed by the storm.[15] Telecommunications company Globe Telecom prepared emergency supplies and personnel in areas where the storm is expected to hit.[16] Heavy rains were reported in the Visayas, Mindanao, and parts of Luzon due to the storm's trough.[17] In Bacolod, more than 281 residents from two barangays were evacuated due to flash floods caused by heavy rains from the storm.[18]

See also

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References

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  1. ^ Warning and Summary 191200 (Report). Tokyo, Japan: Japan Meteorological Agency. October 19, 2024. Archived from the original on October 19, 2024. Retrieved October 19, 2024.
  2. ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 03Z 19 October 2024 (Report). United States Joint Typhoon Warning Center. October 19, 2024. Archived from the original on October 19, 2024. Retrieved October 19, 2024.
  3. ^ Warning and Summary 191800 (Report). Tokyo, Japan: Japan Meteorological Agency. October 19, 2024. Archived from the original on October 19, 2024. Retrieved October 19, 2024.
  4. ^ Tropical Cyclone Formation Alert (Invest 96W) (Report). United States Joint Typhoon Warning Center. October 19, 2024. Retrieved October 19, 2024.
  5. ^ Prognostic Reasoning No. 1 for tropical depression (Report). Tokyo, Japan: Japan Meteorological Agency. October 20, 2024. Archived from the original on October 20, 2024. Retrieved October 20, 2024.
  6. ^ Prognostic Reasoning for Tropical Depression 22W (Twenty-Two) Warning No. 1 (Report). United States Joint Typhoon Warning Center. October 20, 2024. Retrieved October 20, 2024.
  7. ^ a b "Tropical Cyclone Bulletin #1 for Tropical Depression 'Kristine'" (PDF). PAGASA. October 21, 2024. Archived from the original (PDF) on October 21, 2024. Retrieved October 21, 2024.
  8. ^ Prognostic Reasoning for Tropical Depression 22W (Twenty-Two) Warning No. 3 (Report). United States Joint Typhoon Warning Center. October 20, 2024. Retrieved October 20, 2024.
  9. ^ Prognostic Reasoning for Tropical Depression 22W (Twenty-Two) Warning No. 4 (Report). United States Joint Typhoon Warning Center. October 21, 2024. Retrieved October 21, 2024.
  10. ^ "Tropical Cyclone Bulletin #3 for Tropical Depression 'Kristine'" (PDF). PAGASA. October 21, 2024. Archived from the original (PDF) on October 21, 2024. Retrieved October 21, 2024.
  11. ^ Nice (October 21, 2024). "Bicol Region, isinailalim sa Red Alert Status bilang paghahanda sa bagyong Kristine - OCD". Radyo Pilipinas. Retrieved October 21, 2024.
  12. ^ "Class suspensions for Monday, October 21, 2024". GMA News Online. October 21, 2024. Retrieved October 21, 2024.
  13. ^ Espiritu, Rex (October 21, 2024). "OCD expects Tropical Depression "Kristine" to affect 30 million people". Manila Standard. Retrieved October 21, 2024.
  14. ^ "PH braces for Tropical Depression Kristine". GMA News Online. October 21, 2024. Retrieved October 21, 2024.
  15. ^ Mier-Manjares, Ma April (October 21, 2024). "Over 700 passengers stranded in Albay due to TD Kristine". INQUIRER.net. Retrieved October 21, 2024.
  16. ^ release, Press (October 21, 2024). "Globe network, personnel ready for 'Kristine'". Punto! Central Luzon. Retrieved October 21, 2024.
  17. ^ "TD Kristine to bring rain to Southern Palawan". PALAWAN NEWS. October 20, 2024. Retrieved October 21, 2024.
  18. ^ Guadalquiver, Nanette (October 21, 2024). "Bacolod City hit by floods, suspends classes due to TD Kristine". Philippine News Agency. Retrieved October 21, 2024.
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