Earth Quakes

Napa rattled by 3.9-magnitude aftershock to strong and damaging earthquake

  • The earthquake-damaged historic winery building dating from 1886 at Trefethen Family Vineyards leans Monday, Aug. 25, 2014, in Napa, Calif. The winery hopes to save the building that is in danger of collapse after San Francisco Bay Area's strongest earthquake in 25 years struck the heart of California's wine country early Sunday. (AP Photo/Eric Risberg)

    The earthquake-damaged historic winery building dating from 1886 at Trefethen Family Vineyards leans Monday, Aug. 25, 2014, in Napa, Calif. The winery hopes to save the building that is in danger of collapse after San Francisco Bay Area's strongest earthquake in 25 years struck the heart of California's wine country early Sunday. (AP Photo/Eric Risberg)  (The Associated Press)

  • Earthquake-damaged wine barrels are lined up after being removed from Napa Barrel Care Monday, Aug. 25, 2014, in Napa, Calif. A powerful earthquake that struck the heart of California's wine country caught many people sound asleep, sending dressers, mirrors and pictures crashing down around them and toppling wine bottles in vineyards around the region. The magnitude-6.0 quake struck at 3:20 a.m. PDT Sunday near the city of Napa. (AP Photo/Eric Risberg)

    Earthquake-damaged wine barrels are lined up after being removed from Napa Barrel Care Monday, Aug. 25, 2014, in Napa, Calif. A powerful earthquake that struck the heart of California's wine country caught many people sound asleep, sending dressers, mirrors and pictures crashing down around them and toppling wine bottles in vineyards around the region. The magnitude-6.0 quake struck at 3:20 a.m. PDT Sunday near the city of Napa. (AP Photo/Eric Risberg)  (The Associated Press)

  • A worker removes an earthquake-damaged wine barrel from a barrel storage facility Monday, Aug. 25, 2014, in Napa, Calif. A powerful earthquake that struck the heart of California's wine country caught many people sound asleep, sending dressers, mirrors and pictures crashing down around them and toppling wine bottles in vineyards around the region. The magnitude-6.0 quake struck at 3:20 a.m. PDT Sunday near the city of Napa. (AP Photo/Eric Risberg)

    A worker removes an earthquake-damaged wine barrel from a barrel storage facility Monday, Aug. 25, 2014, in Napa, Calif. A powerful earthquake that struck the heart of California's wine country caught many people sound asleep, sending dressers, mirrors and pictures crashing down around them and toppling wine bottles in vineyards around the region. The magnitude-6.0 quake struck at 3:20 a.m. PDT Sunday near the city of Napa. (AP Photo/Eric Risberg)  (The Associated Press)

Napa County has been rattled by a small aftershock to the strong and damaging earthquake that hit California's wine capital over the weekend.

The US Geological Survey says the 3.9-magnitude quake struck at 5:33 a.m. Tuesday about 7 miles south of the city of Napa.

A sheriff's dispatcher says the station shook a little, but there have been no calls reporting damage or injuries.

California's wine capital is still recovering from Sunday's 6.0-magnitude earthquake, which is estimated to have caused at least $1 billion in property damage.

There have been a series of small aftershocks, mostly in the 2.0-magnitude range.