Hydrometeorological Discussion National Weather Service / California Nevada RFC / Sacramento CA 705 AM PDT Fri May 8 2026 ...WARMING WITH DRY CONDITIONS THROUGH MONDAY... ...POTENTIAL FOR SCATTERED SHOWERS SIERRA CREST ON TUESDAY... ...WEAK SYSTEM TRAVERSES THE NORTH ON WEDNESDAY... .METEOROLOGICAL CONDITIONS (FRI AM - THU AM)... High pressure is currently centered to the southwest of CA and extends north-northeast across the west coast into western Canada. A weak disturbance moving through the southwest flow aloft over the northeast Pacific is making its way toward the Pacific Northwest. This will temporarily halt the building of the upr ridge across the region as it moves inland today...but then on Saturday...look for heights to continue to build across the west coast. Another weak s/wv trof will make its way toward the Pacific Northwest on Sunday...once again only briefly slowing down the building of the upr ridge across the region. By Monday into Tuesday...the upr ridge will slide inland and strengthen over the 4-Corners bringing a peak to the upcoming above average temperatures...anywhere from plus 10- to plus 25-degF over seasonal normals. With the upr ridge downstream of the region...this will allow from some moisture to advect northward on the upstream side of the upr ridge. Models are hinting at the potential for some scattered showers/t-storms at the Sierra crest on Tuesday. Then on Wednesday...with the upr ridge sliding farther downstream across the Rocky Mountain states and eventually the Great Plains states...a s/wv trof moving toward the west coast may generate some scattered light precip over the higher terrain of northern CA and northern NV. Models not overly in concert at this point...so confidence is lower. However...by the middle of next week...it is getting clearer that the well above normal temperatures will wane. 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. |