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.



  IMPORTANT: This map does not reflect the most detailed and up to date information about announced Public Safety Power Shutoff events. For the latest information visit pge.com/pspsupdates.

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.

Saturday, December 5, 2020 

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.

Summary: The PG&E Emergency Operations Center remains activated is currently monitoring an offshore wind event expected to develop early Monday and continue into early Tuesday. At this time, the winds are expected to be strongest across the Central Sierra and North Bay and zones 3, 4, 5, 8, and 9 are in PSPS Watch. Although CA has received some precipitation earlier in the season, shrub and brush fuel moisture remains very low and dead fuels are exceedingly dry for this time of year. Thus far, most locations have received less than a third to half the normal amount of precipitation to date. There is still some uncertainty at this time regarding relative humidity values at times of peak winds, and the forecast will need to be monitored closely and some changes are expected in the scope due to the uncertainty in the event. Please note that the start of the event is still 2 days out, so please stay tuned to future updates.
Details: A weak weather system will bring rain to Humboldt and the far North on this afternoon and evening, with dry and mild conditions expected elsewhere. After this system moves through the region tonight, it will stall and track southward back through the territory Sunday and Monday. This will result in increasing north to northeast winds Sunday night across Northern California, that will then increase and spread south along the Sierra and into the Bay and Delta regions through the day Monday. Winds will then decrease across the Bay Monday afternoon and evening, while winds continue to spread south along the Sierra and Southern Coastal Range. Winds will then decrease across the south during the first half of Tuesday, while the remainder of the state stays dry and continues to see mild temperatures. Although November precipitation improved fuel and soil moisture values in some areas, the recent long spell of dry and mild weather has begun to reverse these gains resulting in heightened fire danger concerns, especially across lower elevations. The US Drought Monitor still indicates that most of Northern CA is in severe to extreme drought at this time.

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.

Explore PG&E's weather map



Whether it's a big winter storm on the horizon or an extended spell of hot and dry weather, PG&E continuously monitors the weather to make sure we're ready to respond to whatever hits our service area. A team of meteorologists analyzes information around the clock to make sure we have the right data to plan ahead and help our customers prepare.


This interactive weather map was created by collecting information from weather stations or cameras throughout PG&E's service territory. The weather stations can vary in the type of information collected (for example, one may report wind only, while another may report humidity, temperature, wind speed and more). Also, each weather station includes its own information timestamp.


We've made this map available to our customers so that you can have the latest information that may affect your plans to help you prepare. Learn how to use the interactive features to display the data you want to see by clicking on the information bar below the map.

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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.

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.


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