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Hydrometeorological Discussion
National Weather Service / California Nevada RFC / Sacramento CA
830 AM PDT Thu Mar 19 2026

...HOT AND DRY WEATHER WITH RECORD SETTING TEMPERATURES INTO 
SATURDAY...
...POTENTIAL FOR LIGHT SHOWER ACTIVITY ACROSS THE NORTH EARLY NEXT 
WEEK...

.METEOROLOGICAL CONDITIONS (THU AM - WED AM)...

An anomalous ridge continues to sit over the western US with 500-hPa 
height anomalies of 6+ sigma over the Four Corners region. The 
placement of the ridge is directing any storm activity into the PNW 
while driving well above normal temperatures across the forecast 
area with numerous daily and March records being set. The heat looks 
to peak either today or tomorrow with the 500-hPa height anomalies 
extending northward into tomorrow. 

The ridge begins to flatten out on Saturday which should provide a 
slight reprieve to the heat and allow for the opportunity for 
unsettled weather to make its way into the northern portions of the 
forecast region early next week. GFS is currently more bullish than 
the EC, placing over a half an inch in the Smith Basin on Tuesday 
while the EC is around a couple tenths. The GFS also has 
accumulating precipitation as far south as the Russian Basin and as 
far east as the northeast Plateau in California. Morning forecasts 
followed guidance from the NBM and WPC, which falls more in line 
with the EC. 

After the brief chance for precipitation, guidance suggest the ridge 
will rebuild,though not as strong as the current ridge. This will 
result in a return to warm and dry weather. 

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.