Draft:Tropical Storm Matmo: Difference between revisions

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==Meteorological history==

==Meteorological history==

{{storm path|Matmo 2025 path.png|colors=new}}

{{storm path|Matmo 2025 path.png|colors=new}}

On 29 September, the [[Joint Typhoon Warning Center]] (JTWC) identified a [[low-pressure area]] approximately {{convert|241|nmi|km}} north-northeast of [[Yap]] in the Federated States of Micronesia. [[Satellite image]]ry indicated a weak area turning with disorganised convective activity, primarily along the system’s western boundary.<ref>{{cite JTWC|date=29 September 2025|type=abpw|designation=93W|time=06Z|url=https://www.metoc.navy.mil/jtwc/products/abpwweb.txt |access-date=29 September 2025}}</ref> The disturbance later entered the [[Philippine Area of Responsibility]] (PAR) and was named ”Paolo” by the [[Philippine Atmospheric, Geophysical and Astronomical Services Administration]] (PAGASA) around 08:00 [[Philippine Standard Time|PHT]] (00:00 UTC) on 1 October, with the [[Japan Meteorological Agency]] (JMA){{efn-lg|The JMA is the [[Regional Specialized Meteorological Centre]] (RSMC) for the Western North Pacific.}} also started advisories and classified it as a tropical depression.<ref>{{cite web |title=LPA east of Catanduanes now tropical depression Paolo |url=https://www.gmanetwork.com/news/scitech/weather/960868/lpa-east-of-catanduanes-now-tropical-depression-paolo/story/ |publisher=GMA News |access-date=1 October 2025 |date=1 October 2025}}</ref><ref>{{cite web |title=Warning and Summary 010000|url=https://tgftp.nws.noaa.gov/data/raw/ww/wwjp27.rjtd..txt |publisher=Japan Meteorological Agency |access-date=1 October 2025 |date=1 October 2025}}</ref> The JTWC also issued a [[Tropical Cyclone Formation Alert]] (TCFA) later that same day, citing [[tropical cyclogenesis|tropical cyclone formation]] within the next 12 to 24 hours.<ref>{{Cite report |date=1 October 2025 |url=https://www.metoc.navy.mil/jtwc/products/wp9325web.txt |title=Tropical Cyclone Formation Alert (Invest 93W) |publisher=Joint Typhoon Warning Center |access-date=1 October 2025 }}{{Dead link|date=October 2025 |bot=InternetArchiveBot }}</ref> The agency later followed suit and designated Paolo as ”27W”, with fragmented banding and flaring convection covering around the [[low-level circulation centre]] (LLCC).<ref>{{Cite report |url=https://www.metoc.navy.mil/jtwc/products/wp2725prog.txt|title=Prognostic Reasoning for Tropical Depression 27W (Twenty-seven) Warning No. 1 |publisher=Joint Typhoon Warning Center |date=1 October 2025 |access-date=1 October 2025}}</ref> Both agencies upgraded 27W into a tropical storm on the following day, with the JMA assigning it the international name ”Matmo” as it tracked west-northwestwards.<ref>{{Cite report |date=2 October 2025 |url=https://www.metoc.navy.mil/jtwc/products/wp2725prog.txt|title=Prognostic Reasoning for Tropical Storm 27W (Matmo) Warning No. 5 |publisher=Joint Typhoon Warning Center |access-date=2 October 2025}}</ref> At 23:00 PHT (15:00 UTC), the PAGASA upgraded Matmo to a severe tropical storm, as satellite imagery indicated an improved organisation, with deep convective banding wrapping into the LLCC, embedded in a favourable environment.<ref>{{Cite web |title=Tropical Cyclone Bulletin #9 for Tropical Storm Paolo (Matmo) |url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/TCB%239_paolo.pdf |access-date=2 October 2025 |date=2 October 2025|website=[[PAGASA]]}}</ref><ref>{{Cite report |date=2 October 2025 |url=https://www.metoc.navy.mil/jtwc/products/wp2725prog.txt|title=Prognostic Reasoning for Tropical Storm 27W (Matmo) Warning No. 6 |publisher=Joint Typhoon Warning Center |access-date=2 October 2025}}</ref> The‌ JMA later followed suit and also upgraded the system into a severe tropical storm early on October 3.<ref>{{cite web |title=Warning and Summary 021800|url=https://tgftp.nws.noaa.gov/data/raw/ww/wwjp27.rjtd..txt |publisher=Japan Meteorological Agency |access-date=3 October 2025 |date=2 October 2025}}</ref> Both the JTWC and the PAGASA have later managed to upgrade Matmo into a minimal typhoon before it made landfall over [[Dinapigue, Isabela|Dinapigue]], [[Isabela (province)|Isabela]].<ref>{{Cite report |date=3 October 2025 |url= https://www.metoc.navy.mil/jtwc/products/wp2725prog.txt |title=Prognostic Reasoning for Typhoon 27W (Matmo) Warning No. 8|publisher=Joint Typhoon Warning Center |access-date=3 October 2025}}</ref><ref>{{Cite web |title=Tropical Cyclone Bulletin #13 for Typhoon Paolo (Matmo) |url= https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/TCB%2313_paolo.pdf |access-date=3 October 2025 |date=3 October 2025|website=[[PAGASA]]}}</ref><ref name=”Inquirer 2025a”>{{cite news|url=https://newsinfo.inquirer.net/2119021/paolo-becomes-typhoon-as-it-nears-landfall-signal-no-4-raised |title=Paolo becomes typhoon as it nears landfall; Signal No. 4 raised |publisher=Philippine Daily Inquirer |access-date=3 October 2025 |date=3 October 2025 }}</ref> As the typhoon brushed over [[Northern Luzon]], a satellite imagery revealed a well-defined deep convective banding pattern wrapping into the LLCC of Matmo, featuring an impressive [[central dense overcast]] (CDO), with extensive feeding bands extending well beyond the island’s perimeter.<ref>{{Cite report |date=3 October 2025 |url= https://www.metoc.navy.mil/jtwc/products/wp2725prog.txt |title=Prognostic Reasoning for Typhoon 27W (Matmo) Warning No. 9|publisher=Joint Typhoon Warning Center |access-date=3 October 2025}}</ref> The PAGASA downgraded it to a severe tropical storm as it traversed Northern Luzon before reemerging over the [[West Philippine Sea]] near [[Santa Cruz, Ilocos Sur|Santa Cruz]], Ilocos Sur.<ref>{{cite news|url=https://www.abs-cbn.com/news/weather-traffic/2025/10/3/cyclone-paolo-weakens-into-severe-tropical-storm-1753 |title=Cyclone Paolo weakens into severe tropical storm; moves to West PH Sea |access-date=3 October 2025 |date=3 October 2025 |publisher=ABS-CBN }}</ref><ref name=Rappler>{{cite news|url=https://www.rappler.com/philippines/weather/severe-tropical-storm-paolo-update-pagasa-forecast-october-3-2025-5pm/ |title=Paolo weakens into severe tropical storm, exits landmass |first=Acor |last=Arceo |publisher=Rappler |access-date=3 October 2025 |date=3 October 2025 }}</ref>

On 29 September, the [[Joint Typhoon Warning Center]] (JTWC) identified a [[low-pressure area]] approximately {{convert|241|nmi|km}} north-northeast of [[Yap]] in the Federated States of Micronesia. [[Satellite image]]ry indicated a weak area turning with disorganised convective activity, primarily along the system’s western boundary.<ref>{{cite JTWC|date=29 September 2025|type=abpw|designation=93W|time=06Z|url=https://www.metoc.navy.mil/jtwc/products/abpwweb.txt |access-date=29 September 2025}}</ref> The disturbance later entered the [[Philippine Area of Responsibility]] (PAR) and was named ”Paolo” by the [[Philippine Atmospheric, Geophysical and Astronomical Services Administration]] (PAGASA) around 08:00 [[Philippine Standard Time|PHT]] (00:00 UTC) on 1 October, with the [[Japan Meteorological Agency]] (JMA){{efn-lg|The JMA is the [[Regional Specialized Meteorological Centre]] (RSMC) for the Western North Pacific.}} also started advisories and classified it as a tropical depression.<ref>{{cite web |title=LPA east of Catanduanes now tropical depression Paolo |url=https://www.gmanetwork.com/news/scitech/weather/960868/lpa-east-of-catanduanes-now-tropical-depression-paolo/story/ |publisher=GMA News |access-date=1 October 2025 |date=1 October 2025}}</ref><ref>{{cite web |title=Warning and Summary 010000|url=https://tgftp.nws.noaa.gov/data/raw/ww/wwjp27.rjtd..txt |publisher=Japan Meteorological Agency |access-date=1 October 2025 |date=1 October 2025}}</ref> The JTWC also issued a [[Tropical Cyclone Formation Alert]] (TCFA) later that same day, citing [[tropical cyclogenesis|tropical cyclone formation]] within the next 12 to 24 hours.<ref>{{Cite report |date=1 October 2025 |url=https://www.metoc.navy.mil/jtwc/products/wp9325web.txt |title=Tropical Cyclone Formation Alert (Invest 93W) |publisher=Joint Typhoon Warning Center |access-date=1 October 2025 }}{{Dead link|date=October 2025 |bot=InternetArchiveBot }}</ref> The agency later followed suit and designated Paolo as ”27W”, with fragmented banding and flaring convection covering around the [[low-level circulation centre]] (LLCC).<ref>{{Cite report |url=https://www.metoc.navy.mil/jtwc/products/wp2725prog.txt|title=Prognostic Reasoning for Tropical Depression 27W (Twenty-seven) Warning No. 1 |publisher=Joint Typhoon Warning Center |date=1 October 2025 |access-date=1 October 2025}}</ref> Both agencies upgraded 27W into a tropical storm on the following day, with the JMA assigning it the international name ”Matmo” as it tracked west-northwestwards.<ref>{{Cite report |date=2 October 2025 |url=https://www.metoc.navy.mil/jtwc/products/wp2725prog.txt|title=Prognostic Reasoning for Tropical Storm 27W (Matmo) Warning No. 5 |publisher=Joint Typhoon Warning Center |access-date=2 October 2025}}</ref> At 23:00 PHT (15:00 UTC), the PAGASA upgraded Matmo to a severe tropical storm, as satellite imagery indicated an improved organisation, with deep convective banding wrapping into the LLCC, embedded in a favourable environment.<ref>{{Cite web |title=Tropical Cyclone Bulletin #9 for Tropical Storm Paolo (Matmo) |url=https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/TCB%239_paolo.pdf |access-date=2 October 2025 |date=2 October 2025|website=[[PAGASA]]}}</ref><ref>{{Cite report |date=2 October 2025 |url=https://www.metoc.navy.mil/jtwc/products/wp2725prog.txt|title=Prognostic Reasoning for Tropical Storm 27W (Matmo) Warning No. 6 |publisher=Joint Typhoon Warning Center |access-date=2 October 2025}}</ref> The‌ JMA later followed suit and also upgraded the system into a severe tropical storm early on October 3.<ref>{{cite web |title=Warning and Summary 021800|url=https://tgftp.nws.noaa.gov/data/raw/ww/wwjp27.rjtd..txt |publisher=Japan Meteorological Agency |access-date=3 October 2025 |date=2 October 2025}}</ref> Both the JTWC and the PAGASA have later managed to upgrade Matmo into a minimal typhoon before it made landfall over [[Dinapigue, Isabela|Dinapigue]], [[Isabela (province)|Isabela]].<ref>{{Cite report |date=3 October 2025 |url= https://www.metoc.navy.mil/jtwc/products/wp2725prog.txt |title=Prognostic Reasoning for Typhoon 27W (Matmo) Warning No. 8|publisher=Joint Typhoon Warning Center |access-date=3 October 2025}}</ref><ref>{{Cite web |title=Tropical Cyclone Bulletin #13 for Typhoon Paolo (Matmo) |url= https://pubfiles.pagasa.dost.gov.ph/tamss/weather/bulletin/TCB%2313_paolo.pdf |access-date=3 October 2025 |date=3 October 2025|website=[[PAGASA]]}}</ref><ref name=”Inquirer 2025a”>{{cite news|url=https://newsinfo.inquirer.net/2119021/paolo-becomes-typhoon-as-it-nears-landfall-signal-no-4-raised |title=Paolo becomes typhoon as it nears landfall; Signal No. 4 raised |publisher=Philippine Daily Inquirer |access-date=3 October 2025 |date=3 October 2025 }}</ref> As the typhoon brushed over [[Northern Luzon]], a satellite imagery revealed a well-defined deep convective banding pattern wrapping into the LLCC of Matmo, featuring an impressive [[central dense overcast]] (CDO), with extensive feeding bands extending well beyond the island’s perimeter.<ref>{{Cite report |date=3 October 2025 |url= https://www.metoc.navy.mil/jtwc/products/wp2725prog.txt |title=Prognostic Reasoning for Typhoon 27W (Matmo) Warning No. 9|publisher=Joint Typhoon Warning Center |access-date=3 October 2025}}</ref> The PAGASA downgraded it to a severe tropical storm as it traversed Northern Luzon before reemerging over the [[West Philippine Sea]] near [[Santa Cruz, Ilocos Sur|Santa Cruz]], Ilocos Sur.<ref>{{cite news|url=https://www.abs-cbn.com/news/weather-traffic/2025/10/3/cyclone-paolo-weakens-into-severe-tropical-storm-1753 |title=Cyclone Paolo weakens into severe tropical storm; moves to West PH Sea |access-date=3 October 2025 |date=3 October 2025 |publisher=ABS-CBN }}</ref><ref name=Rappler>{{cite news|url=https://www.rappler.com/philippines/weather/severe-tropical-storm-paolo-update-pagasa-forecast-october-3-2025-5pm/ |title=Paolo weakens into severe tropical storm, exits landmass |first=Acor |last=Arceo |publisher=Rappler |access-date=3 October 2025 |date=3 October 2025 }}</ref>

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Western North Pacific tropical storm in 2025

Severe Tropical Storm Matmo, known in the Philippines as Typhoon Paolo, is an active tropical cyclone which affected Northern and Central Luzon and is currently transversing northern South China Sea. The twenty-first named storm of the annual typhoon season, Matmo originated from an area of convection north-northeast of Yap which became a tropical depression on 1 October.

Meteorological history

Map plotting the storm’s track and intensity, according to the Saffir–Simpson scale

Map key

  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

On 29 September, the Joint Typhoon Warning Center (JTWC) identified a low-pressure area approximately 241 nautical miles (446 km) north-northeast of Yap in the Federated States of Micronesia. Satellite imagery indicated a weak area turning with disorganised convective activity, primarily along the system’s western boundary.[1] The disturbance later entered the Philippine Area of Responsibility (PAR) and was named Paolo by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) around 08:00 PHT (00:00 UTC) on 1 October, with the Japan Meteorological Agency (JMA)[α] also started advisories and classified it as a tropical depression.[2][3] The JTWC also issued a Tropical Cyclone Formation Alert (TCFA) later that same day, citing tropical cyclone formation within the next 12 to 24 hours.[4] The agency later followed suit and designated Paolo as 27W, with fragmented banding and flaring convection covering around the low-level circulation centre (LLCC).[5] Both agencies upgraded 27W into a tropical storm on the following day, with the JMA assigning it the international name Matmo as it tracked west-northwestwards.[6] At 23:00 PHT (15:00 UTC), the PAGASA upgraded Matmo to a severe tropical storm, as satellite imagery indicated an improved organisation, with deep convective banding wrapping into the LLCC, embedded in a favourable environment.[7][8] The‌ JMA later followed suit and also upgraded the system into a severe tropical storm early on October 3.[9] Both the JTWC and the PAGASA have later managed to upgrade Matmo into a minimal typhoon before it made landfall over Dinapigue, Isabela.[10][11][12] As the typhoon brushed over Northern Luzon, a satellite imagery revealed a well-defined deep convective banding pattern wrapping into the LLCC of Matmo, featuring an impressive central dense overcast (CDO), with extensive feeding bands extending well beyond the island’s perimeter.[13] The PAGASA downgraded it to a severe tropical storm as it traversed Northern Luzon before reemerging over the West Philippine Sea near Santa Cruz, Ilocos Sur.[14][15]

Preparations

Philippines

At 05:00 PHT on 1 October (21:00 UTC), the PAGASA started to issue Tropical Cyclone Wind Signal No. 1 over the entire provinces of Bulacan, Catanduanes, Ilocos Norte, Nueva Ecija, Pampanga, Pangasinan, Quezon and Tarlac, and northern Zambales.[16] The PAGASA warned in their bulletin on the same day at 11:00 PHT (03:00 UTC), when Paolo was 450 nautical miles (835 km) to the east of southeastern Luzon, that the depression could bring heavy rains, strong winds, and coastal flooding to parts of Northern and Central Luzon by 3 October.[17][18][19]

A Signal No. 2 was upgraded on the following day for some portions of Apayao, Cagayan, Ilocos Sur, and the whole provinces of Abra, Kalinga.[20] As Matmo became a severe tropical storm by the PAGASA at 23:00 PHT (15:00 UTC), the agency further upgraded to Signal No. 3 in northern Aurora, Benguet, La Union, central and southern Isabela, Nueva Vizcaya and Quirino, and the whole province of Ifugao and the Mountain Province.[21][22] At 11:00 PHT (03:00 UTC) on 3 October the agency raised Signal No. 4 for extreme northern Aurora, the southern portions of Isabela, Abra, Ilocos Sur, the northern portions of Quirino, Nueva Vizcaya, La Union, and the whole province of the Mountain Province and Ifugao.[12][23]

The No. 4 signal was lowered upon the PAGASA’s downgrading of Matmo to a severe tropical storm at 17:00 PHT on 3 October.[15]

Apart from wind signals, the PAGASA issued a heavy rainfall advisory at 11:00 PHT on 3 October, placing Bataan and Zambales under an Orange Rainfall Warning, indicating that flooding was threatening and residents should be ready to evacuate if necessary. A Yellow Rainfall Warning was also issued for Batangas, Cavite, and several towns in Quezon, signalling the possibility of flooding in flood-prone areas.[24]

Hong Kong

The Hong Kong Observatory (HKO) announced at 17:20 HKT (09:20 UTC) on 3 October that the Standby Signal No. 1 would be issued at 19:40 HKT,[25] which happened as scheduled,[26] setting a record that the tropical cyclone warning signal was issued for the twelfth storm in a season.[27] The HKO had started tracking the area of low pressure as early as 29 September and forecasted it to edge towards western Guangdong,[28] and upgraded it to a tropical depression by 23:00 HKT on 1 October.[29]

Macau

The n.° 1 signal‌ [yue] was issued by the Direcção dos Serviços Meteorológicos e Geofísicos at 23:00 MST on 3 October.[30][31][32]

Vietnam

In anticipation of the developments associated with Matmo, the Haiphong City Civil Defence Command issued on 2 October a directive to the Civil Defense Commands of localities, as well as to relevant sectors, agencies, and units, to closely monitor official warnings, forecasts, and the storm’s progression. Captains and owners of vessels operating at sea are to be promptly informed of the storm’s current position, projected trajectory, and evolving characteristics in order to implement appropriate precautionary measures and adjust production plans as necessary, thereby ensuring the safety of human life and property. Continuous communication must be maintained to enable the timely management of any arising emergencies. Additionally, response forces and equipment are to remain in a state of readiness to conduct rescue and relief operations as required.[33]

Impact

Philippines

Flooding was reported in several parts of Luzon as Matmo brought heavy rain on 3 October.[24]

See also

Notes

References

‌

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