Learn the role weather plays in a power shutoff


If weather forecasts indicate gusty winds and dry conditions, combined with a heightened fire risk, it may be necessary for us to turn off the electricity serving that area. This is called a Public Safety Power Shutoff (PSPS).


Learn more about a PSPS

The information in this map is intended only to provide customers with a general estimate regarding potential locations that may be impacted by a PSPS event should one become necessary. Conditions affecting a possible PSPS event can change quickly and the actual impact of a future PSPS event is uncertain.

 

Find your PG&E Geographic Zone and 7-day key below.

Tuesday, October 22, 2019 

NOTE: This forecast is based on weather conditions and fuel moisture content only and does not include other criteria used to determine whether a PSPS may be necessary.

The weather forecast models continue to forecast gusty and dry offshore winds beginning tomorrow and lasting into Thursday. These dry and gusty winds will combine with dry fuels to lead to critical fire conditions for portions of the northern Sacramento Valley, northern Sierra and the North Bay areas. The National Weather Service issued Fire Weather Watches for a large swath of PG&E territory, including the above-mentioned areas. These will likely get upgraded to Red Flag Warnings later today or tomorrow. Northern Operations Predictive Services continues to forecast a high risk event due to these dry and gusty winds. PG&E Meteorology continues to participate in daily interagency calls with federal forecast agencies to remain aligned on the upcoming event. The PG&E Emergency Operations Center remains activated. The latest PG&E PSPS forecast remains at a PSPS Watch for geographic zones 2, 3, 4, and 5 for Wednesday and Thursday. A PSPS Watch has been added to zone 9 for Thursday and Friday. After a period of more settled weather on Friday into Saturday, the weather models are also indicating the potential for another offshore wind event on Saturday night into Sunday afternoon, although model remain very unclear on this time period. Please note PSPS decisions are made at a much more granular level than zone. Weather forecasts are dynamic and may change so please stay closely tuned to further updates.   
Details: High pressure will build into the Great Basin and Pacific Northwest of the coming days, allowing for dry and warmer weather to continue to develop. Light offshore winds will continue today, with high temperatures in the 70s along the coast with most of the territory seeing highs in the 80s. This combination of warm, dry air and breezy winds will allow for the continued drying of fuels. Stronger offshore (Diablo) winds are on track to develop Wednesday into Thursday, with gusts in the Sierra foothills potentially exceeding 50 mph with gusts to 35 – 45 mph possible across the elevated terrain of the North Bay and the elevated terrain on the western edge of the Sacramento Valley. Breezy to locally gusty winds are also possible in the East Bay and Santa Cruz mountains. As the high pressure continues to build east of the territory, breezy to locally gusty winds may also develop over the Tehachapi mountains and southern Kern as well. Overall, the upcoming event is not expected to be as strong as the October 9th – 10th PSPS event. More settled weather is expected on Friday and Saturday, although weak offshore flow is expected to continue away from the immediate coast. Some of the weather models show another offshore wind event is possible Sunday into Monday. Details around this event remain unclear as the models struggle to form a solid solution, so the period will continue to be monitored. Dead fuel moisture content and live fuel moisture remaining at or below critical levels; this will continue until significant winter precipitation reaches the territory.     
   

Please note: This forecast is published daily by an operational meteorologist from PG&E’s Meteorology and Analytics team. This forecast has been customized for PG&E utility operations and should not be used for any other purpose or by any other entity. This forecast only provides a broad overview for a potential Public Safety Power Shutoff (PSPS) event in the next 7 days as determined from an analysis of forecasted weather, the potential for wind-related damage, and fuel moisture content in dead and live vegetation. It is not a fire danger forecast. The forecast is broken down by broad PG&E Geographic Zones numbered 1 - 9; however, PSPS decisions are made at more granular levels; thus, only a portion of a zone may experience a PSPS event. While a PSPS event may not be expected for an area, due to the interconnectivity of the grid any location within PG&E territory may be subject to PSPS event.

SAFETY TIP: Help us reach you when it’s important. Make sure we have your correct email address and phone number so we can reach out to you in advance of a public safety power outage, when and where possible.


Update your contact information

PG&E weather map


Information is provided by weather stations or cameras throughout PG&E’s service territory. Note that weather stations vary in the type of information collected (i.e., one may report wind only, while another may report humidity, temperature, wind speed and more). Also, each weather station includes its own information timestamp.

Note: Internet Explorer is not supported for this application.



The information displayed on and available through this webpage is intended only to provide customers with a general estimate regarding potential locations that may be impacted by a PSPS event should one become necessary. Conditions affecting a possible PSPS event can change quickly and the actual impact of a future PSPS event is uncertain.