Less than 24 hours away from a potential widespread power shut-off in Northern California, PG&E was still hesitant to share any details about exactly when blackouts would start rolling out.

“The high fire risk conditions are expected to begin early Wednesday morning and continue throughout Thursday,” said spokesperson Tamar Sarkisfian, but she declined to give details on which California counties might see shut-offs first, or what time residents might expect to be left in the dark.

Meanwhile, city officials and local agencies started pushing out messages on social media that they had received information from PG&E.

“PG&E says NO power shutoff event in Contra Costa County tomorrow,” tweeted the county.

When asked, PG&E declined to confirm shutoff timing to SFGATE.

“We work really closely with cities and counties and other partners throughout the communities and its up to them what information they choose to release,” said Sarkisfian.

If you’re in one of the potentially affected areas (find out here), follow your local public safety agencies on social media and sign up for Nixle alerts for updates as they become available. We’ve also compiled all the information we know about PSPS timing for Bay Area cities and counties below:

Alameda County: The sheriff’s department said at 12:45 p.m. that Alameda County had been removed from the PSPS area entirely, though it instructed people to stay flexible in case the forecast changed. PG&E had not updated its outage maps nor its website to reflect such a change at time of publication.

Contra Costa County: City officials announced at 1:3o p.m. Tuesday that it would no longer be affected by a PSPS. PG&E’s website had not been updated to reflect this information at time of publication.

Marin County: The sheriff’s office said parts of Marin County would start losing power at 4 p.m. Wednesday. Novato city officials said as of 9:55 a.m. Tuesday, the city was not expected to be impacted.

Napa County: No timing update given.

San Mateo County: Parts of southern San Mateo County were added to the watch list Tuesday morning. No details on timing were given.

Santa Clara County: Santa Clara County was also added to the watch list Tuesday morning, but no details on timing were given.

Solano County: Nearly 2,000 customers in Solano County were still expected to be affected, but it’s not clear what time the power might turn off.

Sonoma County: Nearly 40,000 customers in Sonoma County were still expected to be affected, but it’s not clear what time the power might turn off.

SFGATE will update this story as more information becomes available.

As with the past three PSPS events this year, San Francisco County is not expected to be affected.

After high wind conditions pass, PG&E can start inspecting power lines for damage and restoring power. The company said its goal is to have power fully restored by the end of the day Thursday.

Alix Martichoux is an SFGATE digital editor. Read her latest stories and send her news tips at [email protected]