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.

Thursday, August 21, 2025

NOTE: This forecast is based on weather conditions and fuel moisture content only. It does not include other criteria used to determine whether a PSPS may be necessary. This forecast only provides a broad overview for a potential PSPS event in the next 7 days. It is determined from an analysis of forecast 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 county. PSPS decisions are made at more granular levels. Only a portion of a county 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.

No Public Safety Power Shutoff (PSPS) events are planned for the next week. Building high pressure over the Desert Southwest will result in above normal temperatures across the region today through the weekend. Daytime highs are forecast to reach the upper 90s to mid-100s across the interior, 80s and 90s through the coastal valleys, and 70s to 80s along the coast. Temperatures near the coast will peak today due to a shallow marine layer, with a slight cooling trend through the weekend due to increased onshore flow. Temperatures across the interior will continue in the triple digits into early next week. Warmer temperatures combined with decreasing relative humidity will lead to increased fire potential across the South today through the weekend; however, strong winds are not expected. Additionally, monsoonal moisture will spread into the territory from the South tomorrow through the weekend leading to muggy conditions, warmer overnight temperatures, increased chances for afternoon thunderstorms over the central to southern Sierra, and a slight risk for dry lightning across the central and southern portions of the territory, primarily over the Central Coast and Sierra foothills. Otherwise, high pressure weakens early next week leading to temperatures cooling to near normal by the middle of next week with continued chances for afternoon isolated thunderstorms across the high Sierra through next week Fuels: The annual grass crop is fully cured across the territory and features above normal loading across the northern half of the territory and near to below normal loading farther south. Live fuel moisture is on the decline across all elevations and has reached critical values across lower and middle elevations. Dead fuel moisture values will fluctuate but are near critical levels away from the coast. The latest 4 Month Seasonal Outlook from Northern Operations Predictive Services is forecasting normal fire activity for near coastal areas for August while trending above normal for inland areas, then above normal areawide in September before decreasing in October and November. Southern Operations Predictive Services is forecasting normal fire activity along the immediate southern coast and southern interior while above normal fire activity is predicted for the surrounding terrain of the San Joaquin Valley August through September. Above normal fire activity is forecast over the far southern coast in October and November with normal activity expected elsewhere. There are 726 of 788 circuits in High Fire Risk Areas (HFRA) that are EPSS-enabled today. The remaining 62 circuits in HFRA will have devices postured in normal settings due to low FPI ratings. Additionally, 17 EPSS Buffer-only circuits are enabled today.

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. It should not be used for any other purpose or by any other entity.