California Gov. Jerry Brown declares a state of emergency following 6.1-magnitude earthquake (developing)

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Seismograph from near the UC Berkeley Campus. Thanks to @MarkTamayoktvu for the link. #NapaQuake pic.twitter.com/ecmcoVvVUJ
— NWSBayArea (@NWSBayArea) August 24, 2014

Correction: seismograph pic is from a sensor in Oklahoma, not Napa HS. The quake was detected there! #Napaquake pic.twitter.com/ooBFZLHZ0o
— NWSBayArea (@NWSBayArea) August 24, 2014

A 6.1 magnitude earthquake occurred 3.73mi WSW of American Canyon, California. Details: http://t.co/TdbXdyM5U9 Map: http://t.co/JCnOlyZ5Ke
— SF QuakeBot (@earthquakesSF) August 24, 2014

California Gov. Jerry Brown declares a state of emergency following 6.1-magnitude earthquake - @nbcbayarea http://t.co/2MbH3d5pC1
— Breaking News (@BreakingNews) August 24, 2014

Family capture 'moment 6.1 magnitude Napa earthquake hits' http://t.co/VXMJP5MjWW pic.twitter.com/LdezQKzi6g
— ITV News (@itvnews) August 24, 2014

Diff btw 6.1 & 6.9 earthquakes in terms of shaking: pic.twitter.com/PKNhTbXcX9
— Dawn Sumner (@sumnerd) August 24, 2014

A 6.0 earthquake in Napa injured 89. A state of emergency has been declared. #NapaQuake http://t.co/f56GeDgc9w
— PrepareSoCal (@PrepareSoCal) August 24, 2014

WATCH LIVE: Marin County Search and Rescue deploying members to Napa County. http://t.co/qzMZSre1y0 #southnapaquake
— ABC7 News (@abc7newsBayArea) August 24, 2014

This is what happens when an #earthquake hits wine country. pic.twitter.com/0uGxVK3n6Q via @DavidSilverOak
— Jim Roberts (@nycjim) August 24, 2014

UPDATE: City of #Napa declares local emergency. At least six fires and 100 gas leaks reported from 6.1 #earthquake.
— FOX 11 Los Angeles (@myfoxla) August 24, 2014

LATEST: Northern California rocked by Most Powerful Earthquake Since 1989. http://t.co/UFpHXddCO8 pic.twitter.com/9nYFvN6gQf
— Pablo Pereira (@PabloWeather) August 24, 2014

Napa Barrel Care, where thousands of barrels are stored, including ours. pic.twitter.com/sdMkWFnYMn
— Carole Meredith (@LagierMeredith) August 24, 2014

#Aftershocks of magnitude +2.5 pic.twitter.com/yW4Tzj1B6G
— Lisa Argen (@LisaArgenABC7) August 24, 2014

Trending: Photos: Damage from Napa earthquake http://t.co/QZauoDykid pic.twitter.com/m0nulMz2ar
— kcranews (@kcranews) August 24, 2014

Lots of activity at @cal_oes State Operations Cntr coordinating #napaquake response. https://t.co/De0k4F655v
— Red Cross CRC (@RedCrossCRC) August 24, 2014