Version:  Current  |  Back 1  |  Back 2  |  Back 3  |  Back 4  |  Back 5  |
Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
620 AM PDT Mon May 18 2026

...DRY WITH GENERAL WARMING THROUGH THE WEEK...

.METEOROLOGICAL CONDITIONS (MON AM - SUN AM)...

Latest setup shows troffing over the interior extending from the 
northern Rockies back southwest over the Great Basin...while an upr 
ridge off the west coast stretches up into BC. This continues the 
dry northerly flow across the region. Through the middle of the 
week...this overall pattern weakens a bit...but continues to show 
the troffing over the interior of the western US with an upr ridge 
off the west coast pushing into extreme western Canada. Although 
weaker...flow will still remain northerly across the region. Finally 
into the upcoming weekend...the flow will flatten a bit with the 
potential for the next disturbance to move over BC and the Pacific 
Northwest a week from now. Overall...dry conditions with 
temperatures warming through the period from currently near or below 
average for this time of year to approx plus 5- to plus 15-degF over 
seasonal normals by the end of this week into the weekend...except 
for the immediate coast where the marine layer will influence 
conditions. 


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.