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== Meteorological history == == Meteorological history ==
{{storm path|Son-Tinh 2018 track.png}} {{storm path|Son-Tinh 2018 track.png}}
An ] strengthened into a tropical depression on July 15, to the northwest of ], ]. Accordingly, the ] (JTWC) designated it as ''11W'' while the ] (PAGASA) gave it the local name ''Henry''.<ref>{{cite web|url=https://www.webcitation.org/70w2Bc366|title=Tropical Depression 11W (Eleven) Warning Nr 01|date=July 15, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 15, 2018}}</ref><ref>{{cite web|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%231.pdf|title=Severe Weather Bulletin #1 For Tropical Depression Henry|date=July 15, 2018|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|archive-url=https://www.webcitation.org/70w2JMzB9|archive-date=July 15, 2018|access-date=July 23, 2018}}</ref> As the system moved westward at high speed, it gradually intensified as its convective structure improved, and strengthened a tropical storm by July 17, with the ] (JMA) assigning the system the international name ''Son-Tinh''.<ref>{{cite web|url=https://www.webcitation.org/70zFNXrpr|title=Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 07|date=July 17, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 17, 2018}}</ref><ref>{{cite web|url=http://tgftp.nws.noaa.gov/data/raw/wt/wtpq20.rjtd..txt|title=TS 1809 SON-TINH (1809) UPGRADED FROM TD|date=July 17, 2018|publisher=Japan Meteorological Agency|archiveurl=https://www.webcitation.org/70zEmL1cK|archivedate=July 17, 2018|accessdate=July 23, 2018}}</ref> An ] strengthened into a tropical depression on July 15, to the northwest of ], ]. Accordingly, the ] (JTWC) designated it as ''11W'' while the ] (PAGASA) gave it the local name ''Henry''.<ref>{{cite web|url=https://www.webcitation.org/70w2Bc366|title=Tropical Depression 11W (Eleven) Warning Nr 01|date=July 15, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 15, 2018}}</ref><ref>{{cite web|url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB%231.pdf|title=Severe Weather Bulletin #1 For Tropical Depression Henry|date=July 15, 2018|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|archive-url=https://www.webcitation.org/70w2JMzB9?url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/SWB|archive-date=July 15, 2018|access-date=July 23, 2018|url-status=dead}}</ref> As the system moved westward at high speed, it gradually intensified as its convective structure improved, and strengthened a tropical storm by July 17, with the ] (JMA) assigning the system the international name ''Son-Tinh''.<ref>{{cite web|url=https://www.webcitation.org/70zFNXrpr|title=Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 07|date=July 17, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 17, 2018}}</ref><ref>{{cite web|url=http://tgftp.nws.noaa.gov/data/raw/wt/wtpq20.rjtd..txt|title=TS 1809 SON-TINH (1809) UPGRADED FROM TD|date=July 17, 2018|publisher=Japan Meteorological Agency|archiveurl=https://www.webcitation.org/70zEmL1cK?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201807170000.htm|archivedate=July 17, 2018|accessdate=July 23, 2018|url-status=live}}</ref>


Thereafter, however, Son-Tinh weakened slightly as it neared ] island due to moderate ].<ref>{{cite web|url=https://www.webcitation.org/70zFNA2BH|title=Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 08|date=July 17, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 17, 2018}}</ref> Continuing to struggle to maintain intensity amid increasing wind shear, Son-Tinh crossed over Hainan island at around 03:00&nbsp;UTC on July 18; despite land interaction the system continued to maintain its overall convective organization.<ref>{{cite web|url=https://www.webcitation.org/710hJvR6z|title=Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 10|date=July 18, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 17, 2018|accessdate=July 23, 2018}}</ref> Later that day, as Son-Tinh emerged from land into the ], Son-Tinh managed to intensify over the warm waters, with ]s of over {{convert|28|C|abbr=on}} contributing to offset otherwise unfavorable upper atmospheric conditions.<ref>{{cite web|url=https://www.webcitation.org/710hJRT94|title=Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 12|date=July 18, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 18, 2018|accessdate=July 23, 2018}}</ref> Before making ] in ], the JMA reported that Son-Tinh reached peak intensity with ] of 75&nbsp;km/h (45&nbsp;mph) and a central pressure of {{convert|994|hPa|inHg|abbr=on}}.<ref>{{cite web|url=http://tgftp.nws.noaa.gov/data/raw/wt/wtpq20.rjtd..txt|title=TS 1809 SON-TINH (1809)|date=July 18, 2018|publisher=Japan Meteorological Agency|archiveurl=https://www.webcitation.org/710h8XzEK|archivedate=July 18, 2018|accessdate=July 23, 2018}}</ref> Once inland over Northern Vietnam, Son-Tinh began to weaken quickly. Both the JMA, RFE and JTWC issued their final warnings on Son-Tinh on July 19 as the system degenerated into an area of low pressure embedded in the ].<ref>{{cite web|url=https://www.webcitation.org/711otPu9f|title=Tropical Storm 11W (Son-Tinh) Warning Nr 014|date=July 19, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 19, 2018}}</ref><ref>{{cite web|url=http://tgftp.nws.noaa.gov/data/raw/wt/wtpq20.rjtd..txt|title=TD DOWNGRADED FROM TS 1809 SON-TINH (1809)|date=July 19, 2018|publisher=Japan Meteorological Agency|archiveurl=https://www.webcitation.org/711on8fxp|archivedate=July 19, 2018|accessdate=July 23, 2018}}</ref> The JTWC, however, continued to track Son-Tinh's remnants for the next two days.<ref name="11Wtrack">{{Cite web|url=http://ftp.emc.ncep.noaa.gov/wd20vxt/hwrf-init/decks/bwp112018.dat|title=Tracking data|date=July 22, 2018|website=National Oceanic and Atmospheric Administration|access-date=July 22, 2018}}</ref> Thereafter, however, Son-Tinh weakened slightly as it neared ] island due to moderate ].<ref>{{cite web|url=https://www.webcitation.org/70zFNA2BH|title=Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 08|date=July 17, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 17, 2018}}</ref> Continuing to struggle to maintain intensity amid increasing wind shear, Son-Tinh crossed over Hainan island at around 03:00&nbsp;UTC on July 18; despite land interaction the system continued to maintain its overall convective organization.<ref>{{cite web|url=https://www.webcitation.org/710hJvR6z|title=Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 10|date=July 18, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 17, 2018|accessdate=July 23, 2018}}</ref> Later that day, as Son-Tinh emerged from land into the ], Son-Tinh managed to intensify over the warm waters, with ]s of over {{convert|28|C|abbr=on}} contributing to offset otherwise unfavorable upper atmospheric conditions.<ref>{{cite web|url=https://www.webcitation.org/710hJRT94|title=Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 12|date=July 18, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 18, 2018|accessdate=July 23, 2018}}</ref> Before making ] in ], the JMA reported that Son-Tinh reached peak intensity with ] of 75&nbsp;km/h (45&nbsp;mph) and a central pressure of {{convert|994|hPa|inHg|abbr=on}}.<ref>{{cite web|url=http://tgftp.nws.noaa.gov/data/raw/wt/wtpq20.rjtd..txt|title=TS 1809 SON-TINH (1809)|date=July 18, 2018|publisher=Japan Meteorological Agency|archiveurl=https://www.webcitation.org/710h8XzEK?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201807180300.htm|archivedate=July 18, 2018|accessdate=July 23, 2018|url-status=live}}</ref> Once inland over Northern Vietnam, Son-Tinh began to weaken quickly. Both the JMA, RFE and JTWC issued their final warnings on Son-Tinh on July 19 as the system degenerated into an area of low pressure embedded in the ].<ref>{{cite web|url=https://www.webcitation.org/711otPu9f|title=Tropical Storm 11W (Son-Tinh) Warning Nr 014|date=July 19, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 19, 2018}}</ref><ref>{{cite web|url=http://tgftp.nws.noaa.gov/data/raw/wt/wtpq20.rjtd..txt|title=TD DOWNGRADED FROM TS 1809 SON-TINH (1809)|date=July 19, 2018|publisher=Japan Meteorological Agency|archiveurl=https://www.webcitation.org/711on8fxp?url=http://gwydir.demon.co.uk/advisories/WTPQ20-RJTD_201807190000.htm|archivedate=July 19, 2018|accessdate=July 23, 2018|url-status=live}}</ref> The JTWC, however, continued to track Son-Tinh's remnants for the next two days.<ref name="11Wtrack">{{Cite web|url=http://ftp.emc.ncep.noaa.gov/wd20vxt/hwrf-init/decks/bwp112018.dat|title=Tracking data|date=July 22, 2018|website=National Oceanic and Atmospheric Administration|access-date=July 22, 2018}}</ref>


Through July 19 and 20, Son-Tinh's remnants curved northwards and then eastwards over Northern Vietnam, before moving southeastward back into the Gulf of Tonkin on July 21.<ref name="11Wtrack"/> Persistent convection developed over the system, aided by a ] to the northeast, prompting the JTWC to begin issuing advisories on Son-Tinh once again on July 21.<ref>{{cite web|url=https://www.webcitation.org/717tA3sXC|title=Prognostic Reasoning for Tropical Depression 11W (Son-Tinh) Warning Nr 15|date=July 21, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 21, 2018|accessdate=July 23, 2018}}</ref> Simultaneously the JMA reported that Son-Tinh had regenerated into a tropical depression.<ref>{{cite web|url=http://tgftp.nws.noaa.gov/data/raw/ww/wwjp25.rjtd..txt|title=WARNING AND SUMMARY 210600|date=July 21, 2018|publisher=Japan Meteorological Agency|archiveurl=https://www.webcitation.org/714rlRllz|archivedate=July 21, 2018|accessdate=July 23, 2018}}</ref> With vertical wind shear now low and sea surface temperatures remaining high near {{convert|29|C|abbr=on}}, the JTWC stated that Son-Tinh intensified back into a tropical storm on July 22,<ref>{{cite web|url=https://www.webcitation.org/717t8vXgI|title=Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 18|date=July 22, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 22, 2018|accessdate=July 23, 2018}}</ref> while the JMA continued to maintain Son-Tinh as a tropical depression.<ref>{{cite web|url=http://tgftp.nws.noaa.gov/data/raw/ww/wwjp25.rjtd..txt|title=WARNING AND SUMMARY 220000|date=July 22, 2018|publisher=Japan Meteorological Agency|archiveurl=https://www.webcitation.org/716DpSDZQ|archivedate=July 22, 2018|accessdate=July 23, 2018}}</ref> Through July 19 and 20, Son-Tinh's remnants curved northwards and then eastwards over Northern Vietnam, before moving southeastward back into the Gulf of Tonkin on July 21.<ref name="11Wtrack"/> Persistent convection developed over the system, aided by a ] to the northeast, prompting the JTWC to begin issuing advisories on Son-Tinh once again on July 21.<ref>{{cite web|url=https://www.webcitation.org/717tA3sXC|title=Prognostic Reasoning for Tropical Depression 11W (Son-Tinh) Warning Nr 15|date=July 21, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 21, 2018|accessdate=July 23, 2018}}</ref> Simultaneously the JMA reported that Son-Tinh had regenerated into a tropical depression.<ref>{{cite web|url=http://tgftp.nws.noaa.gov/data/raw/ww/wwjp25.rjtd..txt|title=WARNING AND SUMMARY 210600|date=July 21, 2018|publisher=Japan Meteorological Agency|archiveurl=https://www.webcitation.org/714rlRllz?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201807210600.htm|archivedate=July 21, 2018|accessdate=July 23, 2018|url-status=live}}</ref> With vertical wind shear now low and sea surface temperatures remaining high near {{convert|29|C|abbr=on}}, the JTWC stated that Son-Tinh intensified back into a tropical storm on July 22,<ref>{{cite web|url=https://www.webcitation.org/717t8vXgI|title=Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 18|date=July 22, 2018|publisher=Joint Typhoon Warning Center|archivedate=July 22, 2018|accessdate=July 23, 2018}}</ref> while the JMA continued to maintain Son-Tinh as a tropical depression.<ref>{{cite web|url=http://tgftp.nws.noaa.gov/data/raw/ww/wwjp25.rjtd..txt|title=WARNING AND SUMMARY 220000|date=July 22, 2018|publisher=Japan Meteorological Agency|archiveurl=https://www.webcitation.org/716DpSDZQ?url=http://gwydir.demon.co.uk/advisories/WWJP25-RJTD_201807220000.htm|archivedate=July 22, 2018|accessdate=July 23, 2018|url-status=live}}</ref>


== Preparations and impact == == Preparations and impact ==
=== China === === China ===
Total economic loss nationwide were at ]240 million (US$35.7 million).<ref>{{cite conference|pages=1–2|conference=ESCAP/WMO Typhoon Committee|title=Member Report: China|author=CMA|publisher=ESCAP/WMO Typhoon Committee|url=http://www.typhooncommittee.org/13IWS/docs/Members%20REport/CHina/Member_report_China_2018.pdf|date=December 4, 2018|accessdate=December 4, 2018|conferenceurl=http://www.typhooncommittee.org/13IWS/index13IWS.html|archivedate=December 4, 2018|archiveurl=http://www.typhooncommittee.org/13IWS/docs/Members%20REport/CHina/Member_report_China_2018.pdf |url-status=dead}}</ref> Total economic loss nationwide were at ]240 million (US$35.7 million).<ref>{{cite conference|pages=1–2|conference=ESCAP/WMO Typhoon Committee|title=Member Report: China|author=CMA|publisher=ESCAP/WMO Typhoon Committee|url=http://www.typhooncommittee.org/13IWS/docs/Members%20REport/CHina/Member_report_China_2018.pdf|date=December 4, 2018|accessdate=December 4, 2018|conferenceurl=http://www.typhooncommittee.org/13IWS/index13IWS.html|archivedate=December 4, 2018|archiveurl=https://web.archive.org/web/20181204010101/http://www.typhooncommittee.org/13IWS/docs/Members%20REport/CHina/Member_report_China_2018.pdf|url-status=dead}}</ref>


=== Vietnam === === Vietnam ===

Revision as of 04:41, 13 April 2020

Tropical Storm Son-Tinh (Henry)
Tropical storm (JMA scale)
Tropical storm (SSHWS)
Tropical Storm Son-Tinh nearing Vietnam on July 18
FormedJuly 15, 2018
DissipatedJuly 24, 2018
Highest winds10-minute sustained: 75 km/h (45 mph)
1-minute sustained: 85 km/h (50 mph)
Lowest pressure994 hPa (mbar); 29.35 inHg
Fatalities173 total, possibly 1,100 more are missing
Damage$323 million (2018 USD)
Areas affectedPhilippines, South China, Vietnam, Laos, Thailand, Myanmar
Part of the 2018 Pacific typhoon season

Tropical Storm Son-Tinh, known in the Philippines as Tropical Storm Henry, was a weak but very deadly tropical cyclone that devastated Vietnam and Laos in July 2018. Son-Tinh originated from an area of low pressure over the Philippine Sea on July 15, 2018. Moving quickly westwards, Son-Tinh strengthened to the ninth tropical storm of the annual typhoon season on July 17. Intensifying only slightly while crossing the South China Sea, Son-Tinh made its first landfall over Hainan Island on July 18. After emerging into the Gulf of Tonkin, Son-Tinh restrengthened before making its second landfall as a tropical storm in Northern Vietnam on July 19. Once inland, Son-Tinh weakened into a low pressure area as it slowed and made a clockwise loop. The remnants of Son-Tinh then emerged back over water and regenerated into a tropical depression late on July 21.

The storm caused severe floods and mudslides in Vietnam, leading to the death of at least 32 people. Over 82,000 hectares (200,000 acres) of agricultural land was inundated and at least 17,000 farm animals were swept away by the floods. The storm also caused or related to the havoc in the neighbouring country of Laos with the collapse of Attapeu dam, in which 40 people died and 98 more missing (and probably as much as 1,100 more people are missing) and 6,600 more are displaced.

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 circle Tropical cyclone square Subtropical cyclone triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

An area of low pressure strengthened into a tropical depression on July 15, to the northwest of Manila, Philippines. Accordingly, the Joint Typhoon Warning Center (JTWC) designated it as 11W while the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) gave it the local name Henry. As the system moved westward at high speed, it gradually intensified as its convective structure improved, and strengthened a tropical storm by July 17, with the Japan Meteorological Agency (JMA) assigning the system the international name Son-Tinh.

Thereafter, however, Son-Tinh weakened slightly as it neared Hainan island due to moderate vertical wind shear. Continuing to struggle to maintain intensity amid increasing wind shear, Son-Tinh crossed over Hainan island at around 03:00 UTC on July 18; despite land interaction the system continued to maintain its overall convective organization. Later that day, as Son-Tinh emerged from land into the Gulf of Tonkin, Son-Tinh managed to intensify over the warm waters, with sea surface temperatures of over 28 °C (82 °F) contributing to offset otherwise unfavorable upper atmospheric conditions. Before making landfall in Northern Vietnam, the JMA reported that Son-Tinh reached peak intensity with 10-minute sustained winds of 75 km/h (45 mph) and a central pressure of 994 hPa (29.4 inHg). Once inland over Northern Vietnam, Son-Tinh began to weaken quickly. Both the JMA, RFE and JTWC issued their final warnings on Son-Tinh on July 19 as the system degenerated into an area of low pressure embedded in the monsoon. The JTWC, however, continued to track Son-Tinh's remnants for the next two days.

Through July 19 and 20, Son-Tinh's remnants curved northwards and then eastwards over Northern Vietnam, before moving southeastward back into the Gulf of Tonkin on July 21. Persistent convection developed over the system, aided by a tropical upper tropospheric trough to the northeast, prompting the JTWC to begin issuing advisories on Son-Tinh once again on July 21. Simultaneously the JMA reported that Son-Tinh had regenerated into a tropical depression. With vertical wind shear now low and sea surface temperatures remaining high near 29 °C (84 °F), the JTWC stated that Son-Tinh intensified back into a tropical storm on July 22, while the JMA continued to maintain Son-Tinh as a tropical depression.

Preparations and impact

China

Total economic loss nationwide were at ¥240 million (US$35.7 million).

Vietnam

Main article: 2018 Northern Vietnam floods

On July 18, the Vietnamese government ordered all vessels to return to port.

In Vietnam, the Thanh Hóa and Nghệ An provinces suffered the most damage, especially with the wake of the storm continuing to generate significant rainfall. It caused major flooding in Northern Vietnam and the capital city of Hanoi. 35 people were killed, more than 5,000 houses, 82,000 hectares (200,000 acres) of crops, and 17,000 farm animals were either swept away, submerged, or otherwise destroyed. The storm has cut off access to several areas in the country and flood water covers several streets in the capital city. Economic losses were estimated to be ₫6.615 trillion (US$287 million).

Laos

Main article: 2018 Laos dam collapse

On July 23, a hydroelectric dam under construction in Attapeu Province, south-east Laos, collapsed. As of 25 September, 40 people were confirmed dead, at least 98 more were missing (and probably as much as 1,100 more people are missing) and 6,600 others were displaced.

See also

References

  1. ^ https://www.aljazeera.com/news/2018/07/laos-struggles-find-1-100-missing-dam-collapse-180729143531636.html
  2. "Vietnam flood death toll rises to 27, more rain forecast".
  3. ^ Nguyen, Mai (July 21, 2018). "Storm Son Tinh kills 20, leaves 16 missing in Vietnam". U.S. Retrieved July 22, 2018.
  4. Sidhu, Sandi; Cullinane, Susannah (July 22, 2018). "Storms, landslides and heat hit Asia". CNN. Retrieved July 22, 2018.
  5. ^ Ferrie 2018. sfn error: no target: CITEREFFerrie2018 (help)
  6. ^ Al Jazeera 2018. sfn error: no target: CITEREFAl_Jazeera2018 (help)
  7. ^ Channel News Asia 2018. sfn error: no target: CITEREFChannel_News_Asia2018 (help)
  8. "Tropical Depression 11W (Eleven) Warning Nr 01". Joint Typhoon Warning Center. July 15, 2018. {{cite web}}: |archive-date= requires |archive-url= (help)
  9. "Severe Weather Bulletin #1 For Tropical Depression Henry". Philippine Atmospheric, Geophysical and Astronomical Services Administration. July 15, 2018. Archived from the original (PDF) on July 15, 2018. Retrieved July 23, 2018.
  10. "Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 07". Joint Typhoon Warning Center. July 17, 2018. {{cite web}}: |archive-date= requires |archive-url= (help)
  11. "TS 1809 SON-TINH (1809) UPGRADED FROM TD". Japan Meteorological Agency. July 17, 2018. Archived from the original on July 17, 2018. Retrieved July 23, 2018.
  12. "Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 08". Joint Typhoon Warning Center. July 17, 2018. {{cite web}}: |archive-date= requires |archive-url= (help)
  13. "Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 10". Joint Typhoon Warning Center. July 18, 2018. Retrieved July 23, 2018. {{cite web}}: |archive-date= requires |archive-url= (help)
  14. "Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 12". Joint Typhoon Warning Center. July 18, 2018. Retrieved July 23, 2018. {{cite web}}: |archive-date= requires |archive-url= (help)
  15. "TS 1809 SON-TINH (1809)". Japan Meteorological Agency. July 18, 2018. Archived from the original on July 18, 2018. Retrieved July 23, 2018.
  16. "Tropical Storm 11W (Son-Tinh) Warning Nr 014". Joint Typhoon Warning Center. July 19, 2018. {{cite web}}: |archive-date= requires |archive-url= (help)
  17. "TD DOWNGRADED FROM TS 1809 SON-TINH (1809)". Japan Meteorological Agency. July 19, 2018. Archived from the original on July 19, 2018. Retrieved July 23, 2018.
  18. ^ "Tracking data". National Oceanic and Atmospheric Administration. July 22, 2018. Retrieved July 22, 2018.
  19. "Prognostic Reasoning for Tropical Depression 11W (Son-Tinh) Warning Nr 15". Joint Typhoon Warning Center. July 21, 2018. Retrieved July 23, 2018. {{cite web}}: |archive-date= requires |archive-url= (help)
  20. "WARNING AND SUMMARY 210600". Japan Meteorological Agency. July 21, 2018. Archived from the original on July 21, 2018. Retrieved July 23, 2018.
  21. "Prognostic Reasoning for Tropical Storm 11W (Son-Tinh) Warning Nr 18". Joint Typhoon Warning Center. July 22, 2018. Retrieved July 23, 2018. {{cite web}}: |archive-date= requires |archive-url= (help)
  22. "WARNING AND SUMMARY 220000". Japan Meteorological Agency. July 22, 2018. Archived from the original on July 22, 2018. Retrieved July 23, 2018.
  23. CMA (December 4, 2018). Member Report: China (PDF). ESCAP/WMO Typhoon Committee. ESCAP/WMO Typhoon Committee. pp. 1–2. Archived from the original (PDF) on December 4, 2018. Retrieved December 4, 2018. {{cite conference}}: External link in |conferenceurl= (help); Unknown parameter |conferenceurl= ignored (|conference-url= suggested) (help)
  24. Vu, Khanh (July 18, 2018). "Vietnam orders vessels back to port, braces for Son Tinh tropical". Reuters. Retrieved July 22, 2018.
  25. ^ "At least 10 dead in Vietnam floods triggered by Typhoon Son Tinh". The New Indian Express. PTI. July 21, 2018. Retrieved July 22, 2018.
  26. "Tóm tắt các cơn bão trong năm 2018" (in Vietnamese). Government of Tuyen Quang province. January 5, 2019. Retrieved January 20, 2019.
Tropical cyclones of the 2018 Pacific typhoon season
TSBolaven TSSanba VITYJelawat TD04W TSEwiniar STSMaliksi TDTD SS07W TSGaemi TDTD TYPrapiroon VITYMaria TSSon-Tinh TDTD STSAmpil TDJosie STSWukong TYJongdari TD16W TYShanshan TSYagi TSBebinca STSLeepi TSHector TSRumbia VSTYSoulik VSTYCimaron TDLuis TDTD VITYJebi TDTD VITYMangkhut TSBarijat VITYTrami TDTD TD29W VITYKong-rey TDTD TDTD VITYYutu TDTD STSUsagi TSToraji TYMan-yi TDUsman
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