Hydrometeorological Discussion National Weather Service / California-Nevada RFC / Sacramento CA 615 AM PDT Mon Jun 22 2026 ...HIGH PRESSURE TO BRING INCREASING TEMPERATURES THROUGH MID WEEK AND MID LEVEL MOISTURE/INSTABILITY INTO SE CA/S NV TUES/WEDS... ...COOLING INTO THE COMING WEEKEND AS A LOW APPROACHES ALONG WITH CHANCES OF SHOWERS FOR N CA/NV FRI/SAT... .METEOROLOGICAL CONDITIONS (MON AM - SUN AM)... High pressure pushing overhead through mid week will result in rising temperatures across the region, particularly away from the coast. Expecting widespread anomalies of +5 to +15 deg F through at least Wednesday away from the coast. Mid level moisture and instability rotating into southern CA/NV Tues and Weds may result in some showers and thunderstorms. Additional moisture/instability over far nrn CA and eastern NV Wednesday is expected as well. Some troughing moving in on Thursday will help push this moisture and instability out of the area while acting to begin to moderate temperatures. A larger upper low moving through the Gulf of Alaska will push additional troughing into CA/NV on Friday lowering temperatures across the region and generating chances of showers over nrn CA/NV Friday and Saturday. Amounts for the moment look generally less than 0.10" with some spots along the northern regional border closer to 0.10-0.25". Temperature anomalies from the cooling are forecast to be -5 to -15 deg F Friday through the weekend. Please Note: This product may NOT be routinely updated. Please refer to the following product issued by the CNRFC www.cnrfc.noaa.gov/Daily-Briefing for a graphical summary of weather and hydrologic conditions. |