Hydrometeorological Discussion National Weather Service / California-Nevada RFC / Sacramento CA 625 AM PDT Fri Aug 14 2026 ...SHOWERS/T-STORMS MAINLY EASTERN NV TODAY... ...COOLER THAN NORMAL TEMPERATURES MODERATE INTO NEXT WEEK... .METEOROLOGICAL CONDITIONS (FRI AM - THU AM)... An active day of scattered showers and thunderstorms primarily impacting the east slopes of the central/southern Sierra and points downstream across much of the state of NV yesterday. This was courtesy of a s/wv trof moving from the central CA coast yesterday morning...reaching the central/southern Sierra and eventually the state of NV during the afternoon and evening hours. This feature has now exited the area to the northeast...making its way over eastern MT. General troffing continues to reside along the or just off the west coast this morning with quite the marine layer push through the Sac/SJ Delta into the Central Valley near Sacramento. A few showers still remain farther inland over northeast NV and the southeast CA deserts as another weak ripple in the flow moves across the area. This afternoon still promises another round of showers and thunderstorms primarily over the eastern half of NV and possible the crest of the central/southern Sierra with just enough moisture and instability in place. Then by Saturday and Sunday...the troffing along the west coast weakens while another disturbance dropping south along 140W rebuilds the troffing farther offshore between 140W and 130W. This will bring drier southwest flow to the region with the opportunity for precip diminishing across the entire area into the following week. Temperatures will be cooler than normal and bottom out either today or tomorrow across the region with anomalies running from minus 5- to minus 20-degF. Into next week...temperatures will moderate a bit with the troffing shifting farther offshore...being slightly below normal for western areas and slightly above normal for eastern areas. Freezing levels are currently from 13000- to 14500-feet across the region and will fluctuate a little through the weekend. Then by next week...these will begin to increase into the range of 16000- to 18000-feet by late Wednesday into Thursday. 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. |