Tropical Storm Boris (2026)

Tropical Storm Boris
Boris south of Guerrero on June 8
Meteorological history
FormedJune 7, 2026 (2026-06-07)
Post-tropicalJune 9, 2026 (2026-06-09)
DissipatedJune 9, 2026 (2026-06-09)
Tropical storm
1-minute sustained (SSHWS/NWS)
Highest winds50 mph (85 km/h)
Lowest pressure1000 mbar (hPa); 29.53 inHg
Overall effects
Fatalities5[1]
Damage$100 million (2026 USD)
Areas affected
Part of the 2026 Pacific hurricane season

Tropical Storm Boris (/boʊrˈiːs/ bohr-EES) was a weak and short-lived tropical cyclone that made landfall in Mexico. The second named storm of the 2026 Pacific hurricane season, Boris originated from a tropical wave off Mexico on June 7. Boris began moving slowly east-northeast and then strengthened into a tropical storm on June 8. Boris then turned sharply north and made landfall close to the border of Guerrero and Oaxaca on June 9. Once inland, Boris quickly weakened to a tropical depression and degenerated into a post tropical cyclone.

In anticipation of Boris, tropical cyclone watches and warnings were issued for portions of the southwestern coast of Mexico. Boris generated heavy rain that triggered flash flooding and landslides across southern Mexico. In Oaxaca, several major roads were damaged by landslides while 800 homes were inundated by floodwaters. Businesses in Acapulco, Guerrero, suffered significant commercial losses from closures. In Colima, three people drowned after being swept away by rough surf. In Oaxaca, a man drowned after being swept away by an overflowing river. As of July 2026, Arthur J. Gallagher & Co. estimated that losses totaled to US$100 million.[2]

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

Boris originated form a disturbance progressing westward within a monsoon trough located over the northeast Pacific Ocean. The disturbance would eventually decouple and turn eastward. On June 4, a trough with significant convection formed off to the southwest of the coast of Mexico. Trough June 5 and June 6, Oceansat-3 indicated that the convection became more persistent.[1] On June 7, an Oceansat-3 pass had indicated that the disturbance had consolidated a closed low-level circulation, the low was classified as Tropical Depression Two-E at 15:00 UTC.[3] At this point in time, the system was still elongated and sea surface temperatures off the southern coast of Mexico were above 80 °F (27 °C).[1][4] Early on June 8, the system acquired tropical storm-force wind and received the name Boris with help from the diurnal fluctuation of strength. That day, Boris would reach its peak intensity before encountering strong wind shear. Movement was slow on June 8 due to Boris being embedded in a cyclonic circulation. On June 9, the system's pattern of convection would deteriorate.[1] Boris then turned north and made landfall close to the border of Guerrero and Oaxaca on June 9 at 05:00 UTC.[1][5][6][7] After landfall, convection within the system collapsed before dissipating by 18:00 UTC.[1]

Preparations

A tropical storm warning was issued for the southern Mexican coast from Lagunas de Chacahua, Oaxaca, to Tecpan de Galeana, Guerrero.[8] The Government of Guerrero issued a red alert for Acapulco.[9] Plan Marina was activated prior to the storm by the Secretariat of the Navy.[10] Claudia Sheinbaum, President of Mexico, activated Plan DN-III-E.[11] The Comisión Federal de Electricidad assembled a team of 145 people to monitor infrastructure to be impacted by Boris.[12]

All classes managed by the Guerrero Ministry of Education along with all classes except those in the northern regions of the Autonomous University of Guerrero were suspended for June 8.[13] After Boris's landfall, schools were suspended another day along with many government buildings.[14] In Acapulco, canals were cleared of obstructions to allow for the escape of water.[13] The Port of Acapulco was closed.[15] Those in the vicinity of the Rio Atoyac were also urged to evacuate.[13] In Guerrero, 629 shelters were opened.[16] Classes across eight municipalities in Michoacán were suspended.[17] In Puebla, classes were suspended across 130 municipalities.[18] More than 33,000 military personnel, 1,500 vehicles, and five helicopters were deployed.[19] The Mexican Navy deployed 4,017 personnel, 60 vehicles, and 25 vessels.[20] A green emergency alert, signifying a low level of danger, was issued for Oaxaca.[21]

Impact

Guerrero

Along the coast of Guerrero sustained winds reached up to 50 miles per hour (80 km/h) and gusts were up to 75 miles per hour (120 km/h).[22] Waves up to 20 ft (6 m) were reported in Acapulco.[23]

Several trees and telephone poles fell in the state.[24] Damage was reported across eight municipalities.[25] Streets in Acapulco were flooded and covered in garbage.[13] Restaurants on the coast of Acapulco were impacted by rough seas on their property.[14] Some sewers were clogged by debris.[15] Four fallen trees and one fallen power pole were reported in Acapulco.[26][27] Twenty businesses were inundated by storm surge.[28] At least 30 palapas were destroyed.[29] Sales from restaurants in Acapulco dropped 80% due to rains from Boris.[30] More than 780 restaurants were forced to close, affecting over 1,800 employees. Commercial losses were estimated at Mex$1.5 billion (US$87.1 million).[31] Hotel occupancy for the days surrounding the impact of Boris in Acapulco was around 20–40%, depending on the area.[14] At least five people were rescued from rough surf.[32] In Barra de Coyuca, at least 65 restaurants were damaged. In Coyuca de Benítez, six boats capsized.[33] Swells from Boris washed up 28 tons of garbage.[34][35] In Tlapa de Comonfort, the roof of a home partially collapsed.[27]

Oaxaca

Across the state, heavy rains triggered numerous landslides that damaged a major road between the cities of Oaxaca and Tehuantepec.[36][37] The Salina Cruz observatory recorded over 12 inches (300 mm) of rain.[1] Damage was reported across 50 municipalities. More than ten neighborhoods were inundated.[38] Power outages were also reported in Oaxaca City and Santa Lucía del Camino.[39] Roads in Oaxaca City became covered with garbage and mud.[39] Landslides were reported along at least 10 sections of a major road between Oaxaca City and Puerto Ángel.[40] Persistent rains in the region increased the occurrence of sewage leakages in some neighborhoods of Oaxaca City.[41] In San Mateo del Mar, 800 homes were inundated.[42] Strong winds damaged several papaya crops.[43] Strong winds tore off the roofs of three restaurants in Roca Blanca.[44][45] An amphitheater collapsed valued at $3.1 million.[1]

In Salina Cruz, the Playa Abierta seaboard, revitalized earlier in the decade, was degraded by waves from Boris.[46] A vehicle was swept away by an overflowing river.[47] Rains from Boris also spread natural gas from a Pemex pipeline leak in the city, spilling into buildings and threatening La Ventosa Lagoon.[48] An outdoor theater worth Mex$54 million (US$3.16 million) was destroyed by swells.[49][50] In San Luis Amatlán, a member of a band drowned after his truck was swept away by an overflowing river.[51][52][49]

Elsewhere

Moisture from Boris generated heavy rains that triggered flash flooding across Veracruz. Numerous vehicles were trapped by floodwaters.[53] Damage was reported across seven municipalities.[54] More than 15 neighborhoods were inundated in Coatzacoalcos.[55] In Zongolica, several towns were left isolated after landslides obstructed highways.[56] In Coyutla, a bridge was destroyed.[57] Five landslides and three mudslides were reported.[58]

In Puebla, heavy rains from Boris flooded fifteen homes and caused damage across fifteen municipalities.[59][60] The Tepequexpa chapel sustained structural damage from the storm.[55] Four bridges were damaged.[61] Power outages were reported across more than 40 communities.[62] The San Marcos River overflowed, damaging drainpipes and leaving homes in Pahuatlán without running water.[63]

Boris also generated rains across Colima, Jalisco, and Michoacán.[22] A woman in Manzanillo, Colima, drowned amidst rough seas after rescue crews had reached her.[64] In Tecomán, Colima, two men were swept away by rough surf and were later found dead.[64][65]

Remnant moisture from Boris also generated heavy rain over Hidalgo. Fifteen fallen trees were reported. A 59-year-old woman was injured when a factory collapsed in Tepeji del Río.[66][29] Forty homes were damaged.[29] Also in Tepeji, heavy rains caused at least six stalls at a market to collapse.[67] At least 30 schools were forced to cancel in person classes due to flooding.[68] Twelve municipalities across the state were left isolated. Landslides were reported across 24 roadways and eight roadways were damaged.[69][70]

In Mexico City, strong winds downed 79 trees and four power poles. Heavy rains caused disruptions to public transportation.[71]

See also

References

  1. 1 2 3 4 5 6 7 8 Adams, Elizabeth (August 20, 2026). "Tropical Storm Boris Tropical Cyclone Report" (PDF). National Hurricane Center. EP022026. Miami, Florida. Retrieved August 21, 2026.
  2. ↑ Bowen, Steve; Kerschner, Brian; Zheng Ng, Jin (July 15, 2026). "H1 2026 Natural Catastrophe and Climate Report" (PDF). ajg.com. Retrieved July 15, 2026.
  3. ↑ Pasch, Richard (June 7, 2026). Tropical Depression Two-E Discussion Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved June 7, 2025.
  4. ↑ Danco, Elizabeth (June 8, 2026). "Tropical Storm Boris to make landfall in Mexico with winds, heavy rain". Accuweather. Retrieved June 8, 2026.
  5. ↑ Papin, Philippe; Adams, Elizabeth (June 8, 2026). Tropical Storm Boris Discussion Number 8 (Report). Miami, Florida: National Hurricane Center. Retrieved June 12, 2026.
  6. ↑ Jones, Judson; Rodríguez Mega, Emiliano (June 8, 2026). "Tropical Storm Boris Drenches Mexico's Pacific Coast". The New York Times. ISSN 0362-4331. Retrieved June 9, 2026.
  7. ↑ Hagen, Andrew (June 9, 2026). Tropical Storm Boris Advisory Number 9 (Report). Miami, Florida: National Hurricane Center. Retrieved June 12, 2026.
  8. ↑ Pasch, Richard (June 7, 2026). "Tropical Depression Two-E Advisory Number 1". National Hurricane Center. Miami, Florida. Retrieved June 7, 2026.
  9. ↑ Sosa Santiago, María Fernanda (June 8, 2026). "Tormenta tropical Boris se acerca a Guerrero: Prevén impacto este martes con lluvias torrenciales". El Economista (in Spanish). Retrieved June 9, 2026.
  10. ↑ Briseño, Patricia (June 7, 2026). "Oaxaca se prepara ante depresión tropical Dos-E". Excélsior (in Mexican Spanish). Retrieved June 8, 2026.
  11. ↑ "El gobierno, listo para la emergencia: Sheinbaum; activan Plan DN-III-E (+Video)". El Sur Acapulco (in Spanish). June 8, 2026. Retrieved June 8, 2026.
  12. ↑ "Alista CFE trabajadores en Guerrero por Boris". Quadratín México (in Spanish). June 9, 2026. Retrieved June 9, 2026.
  13. 1 2 3 4 Harrison, Aurora (June 8, 2026). "Acapulco, en semáforo rojo ante la llegada de la tormenta tropical Boris". El Sur Acapulco (in Spanish). Retrieved June 8, 2026.
  14. 1 2 3 "Suspenden hoy clases en Guerrero; llaman a extremar precauciones por 'Boris'". El Sur Acapulco (in Spanish). June 9, 2026. Retrieved June 9, 2026.
  15. 1 2 Harrison, Aurora (June 8, 2026). "Deja la lluvia árboles caídos, un poste colapsado, apagones y arrastre de basura en Acapulco". El Sur Acapulco (in Spanish). Retrieved June 8, 2026.
  16. ↑ "Primeros impactos de 'Boris' esta noche; suspenden clases el martes". El Sur Acapulco (in Spanish). June 9, 2026. Retrieved June 9, 2026.
  17. ↑ "Suspenden clases en 8 municipios de Michoacán por los efectos de "Boris" | Bitácora Diario" (in Spanish). June 10, 2026. Retrieved June 11, 2026.
  18. ↑ López, Itzel Naranjo (June 8, 2026). "Boris provoca suspensión de clases en 130 municipios de Puebla". sdpnoticias (in Spanish). Retrieved June 11, 2026.
  19. ↑ Maya, La Jornada. "'Boris' deja daños materiales en Guerrero e inundaciones en varios municipios de Colima". www.lajornadamaya.mx. Retrieved June 12, 2026.
  20. ↑ "Reportan daños menores por 'Boris' en Guerrero y Oaxaca". El Diario de Chihuahua (in Mexican Spanish). Retrieved June 12, 2026.
  21. ↑ Gonzalez, Gabriel (June 9, 2026). "Tormenta tropical Boris pone en alerta verde a 55 municipios de Oaxaca". Libertad Oaxaca (in Mexican Spanish). Retrieved June 12, 2026.
  22. 1 2 Doroteo, Camila. "Tormenta tropical "Boris" toca tierra en los límites de Guerrero y Oaxaca; presenta fuertes vientos". El Universal (in Spanish). Retrieved June 9, 2026.
  23. ↑ "Tormenta Tropical Boris provoca olas de hasta seis metros en Acapulco". Alerta Ciudad (in Mexican Spanish). June 9, 2026. Retrieved June 12, 2026.
  24. ↑ "Alerta en Acapulco y Costa Chica por Boris; pide gobierno reducir movilidad (+Video)". El Sur Acapulco (in Spanish). June 8, 2026. Retrieved June 8, 2026.
  25. ↑ "Tormenta Boris deja sin luz a 40 comunidades en la Sierra" (in Spanish). June 9, 2026. Retrieved June 11, 2026.
  26. ↑ "Lluvias de Boris dejan inundaciones y cuatro árboles caídos en Acapulco - El Sol de Acapulco". OEM (in Spanish). Retrieved June 9, 2026.
  27. 1 2 Jornada, La; corresponsal, Héctor Briseño (June 9, 2026). "'Boris' deja daños materiales en Guerrero". La Jornada (in Spanish). Retrieved June 11, 2026.
  28. ↑ "Tormenta Tropical Boris azota con mayor fuerza a Guerrero y Oaxaca, seguirán lluvias". 24 Horas (in Spanish). June 10, 2026. Retrieved June 10, 2026.
  29. 1 2 3 Beltran, Iris Camila (June 10, 2026). "Deja Tormenta 'Boris' inundaciones, deslaves y socavones". La Prensa de Coahuila | Noticias de Coahuila al instante (in Spanish). Retrieved June 10, 2026.
  30. ↑ "Caen 80% las ventas de restaurantes en zona tradicional por Boris - El Sol de Acapulco". OEM (in Spanish). Retrieved June 11, 2026.
  31. ↑ "Tormenta Boris dejó pérdidas millonarias y cierre de negocios en Acapulco - El Sol de Acapulco". OEM (in Spanish). Retrieved June 12, 2026.
  32. ↑ "Cinco turistas fueron rescatados tras ignorar alerta de mar de fondo - El Sol de Acapulco". OEM (in Spanish). Retrieved June 11, 2026.
  33. ↑ "Tormenta Tropical "Boris" deja daños en 65 restaurantes de Barra de Coyuca" (in Spanish). Retrieved June 10, 2026.
  34. ↑ Redacción, Por (June 9, 2026). "La 'cochinada' de la tormenta 'Boris': Además de lluvias, deja 28 toneladas de basura en Acapulco". El Financiero (in Spanish). Retrieved June 11, 2026.
  35. ↑ E (June 9, 2026). "Retiran 28 toneladas de basura de playas de Acapulco tras "Boris"". Despertar del Sur (in Spanish). Retrieved June 11, 2026.
  36. ↑ Hernández, Pablo (June 6, 2026). "Afectan lluvias tramo de la carretera en San Dionisio Ocotepec". Quadratín Oaxaca (in Spanish). Retrieved June 7, 2026.
  37. ↑ ""Boris" deja daños e inundaciones en Oaxaca". Excélsior (in Mexican Spanish). June 8, 2026. Retrieved June 9, 2026.
  38. ↑ Evolucion, Redacción Diario (June 10, 2026). "Tormenta tropical Boris deja una mujer muerta, dos desaparecidos y daños en varios estados". Diario Evolución (in Spanish). Retrieved June 11, 2026.
  39. 1 2 Mejía Reyes, Lisbeth (June 8, 2026). "Dejan lluvias severos estragos en la zona metropolitana". El Imparcial de Oaxaca (in Spanish). Retrieved June 8, 2026.
  40. ↑ Político, Redacción Animal (June 8, 2026). "Tormenta tropical Boris deja afectaciones en carreteras de Oaxaca". Grupo Animal (in Spanish). Retrieved June 10, 2026.
  41. ↑ Mejía Reyes, Lisbeth (June 9, 2026). "Omisión de SOAPA ante fuga de aguas negras". El Imparcial de Oaxaca (in Spanish). Retrieved June 9, 2026.
  42. ↑ "Oaxaca tras Boris: derrumbes, inundaciones y caos vial". Grupo Milenio (in Spanish). June 8, 2026. Retrieved June 11, 2026.
  43. ↑ "Oaxaca: Tormenta tropical Boris provoca pérdidas en huertas de papaya en la Costa". www.elpinero.mx. June 8, 2026. Retrieved June 9, 2026.
  44. ↑ "Boris provoca inundaciones y lluvias torrenciales en cinco estados". adn Noticias (in Mexican Spanish). June 8, 2026. Retrieved June 9, 2026.
  45. ↑ ""Boris" y rompeolas del Interoceánico inundan a Juchitán y Tehuantepec en Oaxaca". La Silla Rota (in Mexican Spanish). June 8, 2026. Retrieved June 13, 2026.
  46. ↑ "El mar gana la batalla en Salina Cruz: colapsa mirador de Playa Abierta tras días de oleaje extremo". El Imparcial de Oaxaca (in Spanish). June 9, 2026. Retrieved June 9, 2026.
  47. ↑ ""Boris" deja daños en carreteras e inundaciones en Oaxaca | Diario Marca" (in Spanish). June 9, 2026. Retrieved June 9, 2026.
  48. ↑ "Fuga de hidrocarburo afecta varias colonias de Salina Cruz". Quadratín Oaxaca (in Spanish). June 9, 2026. Retrieved June 10, 2026.
  49. 1 2 "Tormenta tropical "Boris" deja una persona fallecida en Oaxaca". El Universal (in Spanish). Retrieved June 12, 2026.
  50. ↑ "Estragos de 'Boris' en Oaxaca: Reportan una víctima mortal e históricos daños materiales por 54 millones de pesos – Poder & Crítica" (in Spanish). Retrieved June 14, 2026.
  51. ↑ "Río arrastra vehículo de grupo musical en San Luis Amatlán; integrante fallece ahogado". El Imparcial de Oaxaca (in Spanish). June 12, 2026. Retrieved June 12, 2026.
  52. ↑ Soto, Por Daniel (June 12, 2026). "Tormenta "Boris" deja un desaparecido en Oaxaca; hombre fue arrastrado por río junto con su camioneta". Publimetro México (in Spanish). Retrieved June 12, 2026.
  53. ↑ Luices, Andrea (June 9, 2026). "Boris deja inundaciones en Pinotepa Nacional, Oaxaca". sdpnoticias (in Spanish). Retrieved June 9, 2026.
  54. ↑ "Paso de 'Boris' deja afectaciones en Oaxaca y Veracruz". 24 Horas (in Spanish). June 9, 2026. Retrieved June 10, 2026.
  55. 1 2 Millares, Fabián (June 9, 2026). "Daños de Boris en México: inundaciones, deslaves y cierres en Puebla, Veracruz y Michoacán". UnoTV (in Mexican Spanish). Retrieved June 10, 2026.
  56. ↑ Sánchez, Iván (June 9, 2026). "Poblaciones en el centro y sur de Veracruz, incomunicadas por deslaves y afectaciones de 'Boris'". La Jornada (in Spanish). Retrieved June 10, 2026.
  57. ↑ "Tormenta "Boris" provocó inundaciones en Coatzacoalcos; mantienen monitoreo de ríos en Veracruz por intensas lluvias - Diario de Xalapa". OEM (in Spanish). Retrieved June 11, 2026.
  58. ↑ "'Boris' impacta tramos rurales; en Tenejapan y Tequila" (in Spanish). June 12, 2026. Retrieved June 12, 2026.
  59. ↑ "Remanentes de "Boris" afectan 15 municipios de Puebla - A tiempo noticias Puebla". localhost (in Mexican Spanish). Retrieved June 10, 2026.
  60. ↑ LaHora (June 9, 2026). "Boris provoca lluvias y afectaciones en viviendas" (in Spanish). Retrieved June 11, 2026.
  61. ↑ TyT, Redacción (June 10, 2026). "Tormenta tropical Boris deja daños en cuatro puentes de la Sierra Norte de Puebla". Revista TyT. Retrieved June 11, 2026.
  62. ↑ Tirzo, Iván (June 9, 2026). "Causa tormenta 'Boris' hundimientos en carreteras y deslaves en Puebla". MTP Noticias (in Spanish). Retrieved June 11, 2026.
  63. ↑ Morales, Carlos (June 13, 2026). "Tlacuilotepec, Puebla, resiente daños por intensas lluvias". Grupo Milenio (in Spanish). Retrieved June 14, 2026.
  64. 1 2 "Tormenta tropical Boris deja una mujer muerta y dos desaparecidos en Colima; conoce su trayectoria" (in Mexican Spanish). Eje Central. June 9, 2026. Retrieved June 10, 2026.
  65. ↑ Jornada, La; Corresponsal, Juan Carlos Flores (June 14, 2026). "Localizan sin vida a dos comerciantes que se encontraban desaparecidos tras paso de la tormenta 'Boris' en Colima". La Jornada (in Spanish). Retrieved June 14, 2026.
  66. ↑ Trejo, Guadalupe (September 6, 2026). "Inundaciones y caída de arboles y bardas en Tepeji por lluvias". Grupo Milenio (in Spanish). Retrieved June 10, 2026.
  67. ↑ Contreras, César (June 9, 2026). "Lluvias por "Boris" dejan incomunicadas a comunidades en Hidalgo". Azteca Noticias (in Mexican Spanish). Retrieved June 10, 2026.
  68. ↑ "Lluvias en Hidalgo obligan a activar clases a distancia en 30 escuelas por falta de movilidad y accesos dañados". XeVT 104.1 FM | Telereportaje (in Spanish). Retrieved June 11, 2026.
  69. ↑ Hidalgo, Paloma Pérez / Corresponsal en (June 10, 2026). "Tormenta Boris aísla 12 municipios en Hidalgo; habilitan albergues". Amexi (in Spanish). Retrieved June 11, 2026.
  70. ↑ Agencia, H. T. (June 11, 2026). "Atienden ocho afectaciones carreteras en Veracruz tras paso de la tormenta tropical Boris". HoyTamaulipas (in Spanish). Retrieved June 12, 2026.
  71. ↑ Jornada, La; Bautista, Elba Mónica Bravo y Nayelli Ramírez (June 9, 2026). "Pegan efectos de 'Boris' en CDMX: tiran árboles y postes y provocan cortocircuitos". La Jornada (in Spanish). Retrieved June 10, 2026.
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