top of page

HURRICANE POLO CAUSES FATAL FLOODING IN JALISCO, MEXICO, AND THREATENS NORTHWESTERN PACIFIC COAST, STRAINING EMERGENCY MANAGEMENT AND SECURITY RESOURCES

13 hours ago
3 min read

(The Hazards Incident Report [IR]  is a near-real-time brief on international hazards and events that are being closely monitored by The Counter Threat Center. The information is accurate at the time of reporting, but may be subject to change.)


Basma Aamri, Hermione Goux, Rebecca Davis, Jared Carvente, WATCH Team

Chloe Pentz, Editor; Elena Alice Rossetti, Senior Editor

September 28, 2026

Hurricane Hitting Coastal Area[1]


Day/Time of Event: September 28, 2026

Location: Off the Pacific coast, Mexico

Hazard Overview: Hurricane

Status: Concluded


Summary: On September 28, 2026, Mexican civil protection authorities, emergency services, and coastal communities prepared for the imminent landfall of Hurricane Polo along Mexico’s northwestern Pacific coastline.[2] Mexico's National Meteorological Service (SMN) warned that heavy to torrential rains will mostly affect the states of Baja California and Sonora.[3] The storm killed three people and left two missing in Jalisco after floodwaters swept away a house and strong ocean currents drowned a swimmer in Puerto Vallarta.[4] The National Hurricane Center (NHC) forecasts up to 12 inches of rain across Baja California Sur and up to eight inches in Sonora, presenting severe risks of flash floods and mudslides.[5] 


Hazard vectors:

  • Flash floods

  • Torrential rains

  • Strong waves

  • Landslide

  • Severe weather

  • Critical infrastructure damage

  • Emergency Management


CTG is on HIGH alert for severe disruptions to regional security and critical infrastructure following Hurricane Polo’s landfall along Mexico’s northwestern Pacific coast, threatening transport networks, aid distribution, and the regional supply of essential goods. Storm surges, hurricane winds, and torrential rainfall will VERY LIKELY trigger severe flash flooding and mudslides across Baja California Sur and coastal Sonora, VERY LIKELY complicating the efforts of civil protection services and security forces to evacuate people to shelters in vulnerable communities. Critical ground transport routes and maritime shipping channels will LIKELY suffer sustained disruptions due to debris flows, port closures, and grid failures, impeding the resumption of economic activities. Secondary hazard vectors such as riverine flooding and utility outages will have a ROUGHLY EVEN CHANCE of prolonging regional logistical obstacles, LIKELY forcing federal authorities to redeploy significant national defense and disaster relief assets to maintain essential public safety functions.


Who will it directly impact: 

  • Government of the State of Baja California

  • Government of the State of Sonora

  • National Civil Protection Coordination (CNPC)

  • Mexican Army

  • Residents in coastal municipalities of Baja California and Sonora

  • Emergency services and personnel

  • Maritime transport

  • Grid operators and power companies

  • Construction workers for infrastructure repairs and rebuilding

  • Local businesses

  • Regional wildlife


Significance:  Extensive deployment of emergency services and security personnel will VERY LIKELY divert state resources towards disaster relief and infrastructure protection, LIKELY reducing capacity for routine counter-criminal and security operations in affected regions. Prolonged infrastructure disruption and institutional resources’ redeployment will LIKELY create localized security voids across storm-impacted corridors in Sonora, Sinaloa, and Baja California Sur, with a ROUGHLY EVEN CHANCE of enabling competing Sinaloa Cartel factions such as Los Chapitos and la Mayiza to seize territory and secure trafficking corridors. Long-term economic insecurity will LIKELY deplete regional budgets and degrade local police capacity, LIKELY enabling cartels to expand territorial control, co-opt reconstruction funding, and increase extortion against local businesses.

[1] Hurricane, generated by a third party image database (created by AI)

[2] Mexico's Pacific coast braces for Hurricane Polo's life-threatening landfall, Reuters, September 2026, https://www.reuters.com/business/environment/mexicos-pacific-cwithwiththat ast-braces-hurricane-polos-life-threatening-landfall-2026-09-28southern/

[3] Alert on the Pacific coast of Mexico before the arrival of Hurricane Polo to the peninsula of Baja California, BBC, September 2026, https://www.bbc.com/mundo/articles/cw5yln0l9rqmo (Translated by Google)

[4] Ibid

[5] Mexico's Pacific coast braces for Hurricane Polo's life-threatening landfall, Reuters, September 2026, https://www.reuters.com/business/environment/mexicos-pacific-coast-braces-hurricane-polos-life-threatening-landfall-2026-09-28storm-impacted/

bottom of page