FNUS85 KREV 210738 FWLREV ECCDA Discussions National Weather Service Reno NV 1238 AM PDT Mon Sep 21 2026 ECC004-009-220745- Lassen NF and BLM in Modoc, Lassen, and Washoe Counties-Plumas NF- Discussion for Susanville and Quincy 1238 AM PDT Mon Sep 21 2026 A weak low pressure system will bring low chances of rain and isolated thunderstorms to the northern Sierra this afternoon. There are also low chances for showers in northeast CA and northern Washoe County on Tuesday. Otherwise, a brief break Wednesday with dry weather and seasonally warm temperatures. A wetter and windier pattern is favored late next week into next weekend as a large trough sweeps across the Pacific NW. $$ ECC012-016-017-220745- Tahoe Basin, Sierra Foothills and El Dorado NF- Sierra Front in Alpine county- Inyo NF, Mono County and Owens Valley- Discussion for Camino, SF, and Inyo 1238 AM PDT Mon Sep 21 2026 A weak low pressure system will bring low chances of rain and isolated thunderstorms to the eastern Sierra and Sierra crest from the Tahoe Basin down through Inyo County this afternoon. Otherwise, a brief break Tuesday and Wednesday with dry weather and seasonally warm temperatures. A wetter and windier pattern is favored late next week into next weekend as a large trough sweeps across the Pacific NW. $$