Tuscany Earthquake: Magnitude 3.7 Tremor Shakes Northern Tyrrhenian Coast

A magnitude 3.7 earthquake struck offshore along northern Tuscany’s Tyrrhenian coast on Wednesday, August 12, 2026, at 10:57 a.m. local time, shaking communities from Lucca and Massa-Carrara to Livorno and Pisa. Italy’s National Institute of Geophysics and Volcanology (INGV) and regional civil protection officials reported no significant damage or injuries, though some public buildings were evacuated as a precaution and a magnitude 2.2 aftershock followed shortly afterward.

Editor’s note: This article draws on INGV seismic data, reporting by Corriere della Sera, AGI, The Florentine, and statements from Tuscany regional authorities, August 12, 2026. Magnitude and depth figures may be revised as additional station data is reviewed.

Epicenter off the northern Tuscan coast

INGV located the main shock in the Ligurian Sea, offshore between the Pisa and Livorno areas, at a depth of roughly 9 kilometers (about 8.6–10 km across agency estimates). The epicenter was near the northern Tuscan coast zone that INGV labels Costa Toscana settentrionale — spanning Massa-Carrara, Lucca, and Pisa provinces.

Detail	Reported figure
Date & time (local)	Wed., Aug. 12, 2026, 10:57 a.m. (CEST)
Magnitude (INGV)	3.7 (ML)
Depth	~9 km
Epicenter	Offshore, Ligurian Sea / northern Tyrrhenian coast
Shaking intensity	Light (IV) near epicenter (EMSC estimates)
Aftershock	M 2.2, ~11:00 a.m.

The European-Mediterranean Seismological Centre (EMSC) placed the epicenter about 18 kilometers northwest of Livorno, while INGV coordinates pointed to waters off Marina di Pisa. Small discrepancies between agencies are normal in the first hours after a tremor.

Residents across the Versilia resort strip and inland towns described a sharp jolt lasting several seconds. Because the quake occurred at relatively shallow depth, shaking was felt more strongly near the coast than a deeper event of similar magnitude would produce.

Sequence of tremors on August 12

Wednesday’s main event was not isolated. INGV recorded a smaller magnitude 1.5 tremor at 10:18 a.m. in the same broad coastal area, at a depth of about 17 kilometers. The 3.7 shock at 10:57 a.m. was followed by the 2.2 aftershock around 11:00 a.m.

No tsunami warning was issued. Italian authorities treat offshore tremors in this range as locally felt events that warrant monitoring but rarely cause widespread structural failure when buildings meet modern seismic codes.

Areas affected

The quake was clearly perceived across a wide swath of northern Tuscany:

• Pisa and coastal communities including Marina di Pisa
• Livorno and the port district
• Lucca and surrounding municipalities
• Massa-Carrara and the Versilia coastline
• Parts of the Tuscan coast popular with summer tourists during the Ferragosto holiday period

Local media reported people leaving offices, schools, and public buildings in several towns. Some municipal structures were evacuated while engineers conducted rapid inspections. By midday, authorities had not confirmed serious building damage, though assessments were continuing.

Official response

Tuscany’s regional civil protection system activated standard post-quake procedures:

• INGV published revised location and magnitude data through its national earthquake observatory.
• Regional Civil Protection launched field checks across affected provinces.
• Tuscany Region President Eugenio Giani said verifications were underway with civil protection partners and urged calm while surveys continued.

The response mirrored protocols used after a stronger magnitude 4.3 earthquake on August 4 in the Pisa area — an event that also caused alarm but limited confirmed damage. Wednesday’s offshore 3.7 tremor struck in broadly the same coastal seismic zone, roughly eight days later, renewing unease among residents and visitors already alert to recent activity.

Seismic context

Northern Tuscany sits in one of Italy’s more seismically active corridors. The Apennine chain and the Tyrrhenian margin generate frequent low-to-moderate earthquakes. Coastal faults and offshore structures can produce tremors felt strongly at the surface even when epicenters lie in the sea.

August’s sequence — including the August 4 M 4.3 event near San Piero a Grado, west of Pisa, and smaller tremors on August 9 — reflects ongoing stress release rather than a single isolated shock. Seismologists emphasize that aftershocks are expected after any perceptible quake and may continue for days or weeks.

For comparison, events below about magnitude 4.0 rarely cause major damage in well-maintained structures, but they can disrupt summer tourism, rattle historic masonry, and prompt precautionary evacuations in schools and public offices.

What residents and visitors should know

Italian civil protection and INGV recommend familiar precautions after coastal tremors:

• Expect aftershocks; each can startle crowds and stress already-weakened masonry.
• Move away from damaged facades, chimneys, and unreinforced walls until officials clear an area.
• Follow municipal alerts rather than unverified social media posts about building safety.
• Check on neighbors, especially older adults and tourists unfamiliar with earthquake procedures.
• Keep emergency contacts and documents accessible if you are traveling along the Tuscan coast during peak season.

Travelers in Pisa, Livorno, Lucca, and Versilia should monitor updates from INGV and Tuscany’s civil protection channels. No travel restrictions were announced by midday on August 12.

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Discussion

Northern Tuscany has felt two perceptible coastal quakes in just over a week — enough to make even routine summer days feel uncertain.

1. If you were in Pisa, Livorno, or along the Versilia coast on August 12, did the 10:57 a.m. tremor feel like a brief scare or something that changed your plans for the day?

2. After the August 4 magnitude 4.3 quake and this week’s follow-on activity, how much should tourists and residents rely on Italy’s building standards versus personal preparedness when choosing where to stay on the Tyrrhenian coast?

Share what you felt, where you were, and whether recent tremors have changed how you think about travel or living in Tuscany.

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