Magnitude 5.8 Earthquake Strikes Eastern Cuba Amid Nationwide Blackout and Political Tensions
No immediate reports of casualties or damage as USGS issues ‘green alert’ for quake felt across Guantánamo and Santiago de Cuba provinces
HAVANA — March 17, 2026 — A magnitude 5.8 earthquake struck off the eastern coast of Cuba early Tuesday, shaking communities in Guantánamo and Santiago de Cuba provinces as the island nation struggled to restore power following a nationwide blackout, with authorities reporting no immediate casualties or significant damage .
The quake occurred at 12:28 a.m. local time (0428 GMT) at a depth of 11.6 kilometers, with its epicenter located approximately 49 kilometers south-southwest of the port of Maisí in Guantánamo province, according to the United States Geological Survey (USGS) . Cuba’s National Center for Seismological Research (CENAIS) reported a magnitude of 6.0 at a depth of 20 kilometers, with the epicenter 37 kilometers southeast of Imías .
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The USGS placed the alert level for shaking-related fatalities and economic losses at “green,” indicating a “low likelihood for casualties and damage” . The agency noted that the towns of Imías and San Antonio del Sur may have experienced moderate shaking .
Aftershocks Detected
Multiple aftershocks followed the main tremor. The USGS recorded a second earthquake of magnitude 4.7 approximately 16 minutes later at a depth of 10 kilometers . The European-Mediterranean Seismological Centre (EMSC) reported a 4.1-magnitude aftershock , while Volcano Discovery documented a 3.8-magnitude tremor at 12:54 a.m. local time at a shallow depth of just 1 kilometer, noting it was “likely an aftershock of the 5.8 quake” .
CENAIS director O’Leary Fernando González Matos confirmed that the earthquake was perceptible in Santiago de Cuba, Guantánamo, and Holguín provinces, and that authorities have detected multiple aftershocks across the national territory . He noted that this seismic event was “located further east than previous earthquakes that have recently occurred south of that Guantanamo locality,” marking a variation from recent seismic patterns in the region .
The monitoring network remains active, with seismological stations backed by emergency power supplies ensuring continuous observation .
Quake Hits During Nationwide Blackout
Tuesday’s earthquake struck as Cuba was already grappling with a severe crisis: a nationwide power outage that began Monday left the island’s 11 million residents without electricity, telephone service, or internet access . By Tuesday morning, authorities reported that approximately two-thirds of the country had electricity again .
This marked the sixth national blackout in Cuba in the past year and a half . Even before this latest “total disconnection,” the situation was already critical across the island, with Havana experiencing daily power outages of approximately 15 hours and some provinces enduring continuous periods without electricity lasting up to two days .
In Havana, which is home to 1.7 million people, some neighborhoods had power restored by Tuesday morning . Olga Suarez, a 64-year-old retiree, told AFP: “What we fear all the time is that the blackout will drag on and we will lose the little bit that we have in the fridge, because everything is so expensive. Otherwise we are used to it because here almost all the time you go to bed and wake up without electricity” .
Fuel Crisis Worsens Energy Emergency
Cuba’s deteriorating energy infrastructure reflects a broader economic crisis exacerbated by US pressure on fuel supplies. Since the US-backed ouster of Venezuelan President Nicolás Maduro on January 3, Cuba has lost its top ally and primary fuel supplier . No oil has been imported to the island since January 9, crippling the power sector while also forcing airlines to curtail flights—a significant blow to tourism, a vital economic sector .
The Trump administration maintains what Cuban officials describe as a de facto oil blockade, threatening sanctions against countries that deliver crude to the island on grounds that Cuba’s communist government constitutes a “threat” . Washington’s pressure campaign has intensified following Trump’s return to office.
Trump’s ‘Take Cuba’ Remarks Add Political Dimension
The earthquake and power crisis unfolded against a backdrop of heightened political tensions. US President Donald Trump declared Monday that he expects to have “the honor of taking Cuba” during his presidency, making one of his most explicit threats yet against the island nation located just 90 miles (150 kilometers) off the coast of Florida .
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“You know, all my life I’ve been hearing about the United States and Cuba. When will the United States do it?” Trump told reporters at the White House. “I do believe I’ll be… having the honor of taking Cuba” .
“Whether I free it, take it — think I could do anything I want with it, you want to know the truth. They’re a very weakened nation right now,” Trump added .
Reports indicate the Trump administration has signaled to Cuban officials that it wants President Miguel Díaz-Canel to be removed from power . Díaz-Canel acknowledged Friday that both governments maintain negotiations amid Washington’s near-total blockade on crude deliveries to the island .
In a bid to relieve economic pressure and potentially meet US demands, a senior Cuban economic official announced Monday that Cuban exiles would now be able to invest in and own businesses on the island .
Recent Seismic History
Tuesday’s earthquake follows a magnitude 5.0 tremor recorded off Cuba’s coast on March 6, according to USGS data . Eastern Cuba experiences frequent seismic activity due to its location near the boundary between the North American and Caribbean tectonic plates. The region’s geological characteristics make it the most seismically active area in Cuba, with a history of significant earthquakes, including the devastating 7.1-magnitude quake that struck near Guantánamo Bay in 2020.
Current Situation
As of Tuesday afternoon, Cuban authorities continued to monitor seismic activity while prioritizing power restoration efforts. The combination of natural disaster and infrastructure collapse has intensified pressure on Cuba’s government, which faces both an acute humanitarian situation and increasingly aggressive rhetoric from Washington.
The coincidence of earthquake and blackout highlighted the fragility of Cuba’s infrastructure at a moment of maximum vulnerability. While Tuesday’s tremor caused no reported damage or injuries, it served as a stark reminder of the multiple crises converging on the island—economic, energetic, seismic, and diplomatic.
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