Hydrometeorological Discussion National Weather Service / California Nevada RFC / Sacramento CA 1250 PM PST Tue Feb 23 2021 ...SCATTERED LIGHT PRECIP FAR NORTH AND EAST TOMORROW AND THU... ...NEXT DISTRUBANCES ARRIVE FROM THE NORTH ON FRI AND AGAIN SAT... .METEOROLOGICAL CONDITIONS (SHORT TERM: TUE PM - FRI AM)... Next s/wv trof expected to drop from the Pacific Northwest to the Great Basin tomorrow. Still looking at some scattered light precip across northeast NV as the favorable dynamics squeeze out the minimal moisture in the atmosphere. Then the next s/wv trof will move across the Pacific Northwest on Thursday and track eastward toward the northern Rockies. The southern extent of this feature will bring some scattered light precip to the far northern tier of the region. Other than these two features bringing scattered light precip to far northern and eastern area...the majority of the region will remain dry. .METEOROLOGICAL CONDITIONS (LONG TERM: FRI AM - MON AM)... Expect light showers across the southern OR Cascades and far northern NV Fri under W to NW flow over the region. By Fri night into the weekend, expect a shortwave to drop south into the region, becoming a closed low and leading to light showers across far northern CA, much of NV, parts of the Sierra and possibly southern CA higher terrain. Activity should wind down for the most part by Sun. Expect freezing levels 2000-5000 ft across far northern CA/NV and levels 5000-8000 ft further south. Some guidance shows another system approaching the coast early next week, but there is plenty of uncertainty as some guidance shows light precip over the region and some shows precip completely missing the region. Followed WPC QPF closely through the period. |