915  
AGUS76 KRSA 181509  
HMDRSA  
 
HYDROMETEOROLOGICAL DISCUSSION  
NATIONAL WEATHER SERVICE / CALIFORNIA NEVADA RFC / SACRAMENTO CA  
810 AM PDT THU APR 18 2024  
   
..WARM AND GENERALLY DRY INTO MONDAY
 
   
..CHANCE OF PRECIP ON TUESDAY AS A LOW APPROACHES THE CA COAST
 
 
   
METEOROLOGICAL CONDITIONS (THU AM - WED AM)
 
 
AN UPPER LEVEL RIDGE OF HIGH PRESSURE OFF THE WEST COAST TODAY  
WEAKENS AS A WEAK DISTURBANCE APPROACHES POINT CONCEPTION AREA  
TONIGHT AND MOVES ONSHORE FRIDAY. TODAY SHOULD BE A DRY DAY BUT MAY  
SEE CUMULUS DEVELOPMENT OVER THE CENTRAL/SRN SIERRA AND SRN NV WITH  
A POSSIBLE ISOLATED SHOWER ON FRIDAY AFTERNOON/EVENING. A SHORTWAVE  
TROUGH APPROACHES THE PAC NW/ B.C. WITH THE TRAILING END OF THE  
ASSOCIATED WEAK FRONT POSSIBLY CLIPPING THE FAR NW CA COAST  
SATURDAY. THIS MAY BRING SOME LIGHT PRECIP TO THE FAR NW CA COAST  
AND ALONG THE SRN OR CASCADES SATURDAY. A WEAK SHORTWAVE RIDGE OF  
HIGH PRESSURE MOVES OVER THE REGION SUNDAY INTO MONDAY BRINGING DRY  
CONDITIONS. AN UPPER LEVEL LOW FORMS OVER THE EASTERN PAC AROUND  
133 W AND 33N MONDAY NIGHT AND GETS CLOSER TO THE CA COAST TUESDAY  
INTO WEDNESDAY. MODELS AND ENSEMBLE MEMBERS VARY WITH THE TIMING AND  
STRENGTH AND TRACK OF THIS LOW FOR LOW CONFIDENCE IN THE DETAILS OF  
THE FORECAST MID-WEEK NEXT WEEK. THE 06Z GFS AND THE 00Z EC SHOW THE  
LOW MOVING SE AND MOVING ONSHORE AROUND BAJA ON WEDNESDAY (GFS) AND  
THURSDAY (EC) AND THE CANADIAN HAS LOW FARTHER NORTH OFF THE NRN CA  
COAST TUESDAY NIGHT INTO WEDNESDAY. THE FORECAST IS MAINLY A MIX OF  
NBM AND WPC FOR TUESDAY WITH A CHANCE OF LIGHT PRECIP OVER THE NORTH  
AND ALONG THE SRN CA COAST.  
 
MAX TEMPS NEAR NORMAL TO AROUND 10 DEGREES ABOVE NORMAL TODAY AND  
FRIDAY (EXCEPT ALONG THE SRN CA COAST UP TO 10 DEGREES BELOW NORMAL  
ON FRIDAY). MAX TEMPS GENERALLY 5 TO 15 DEGREES ABOVE NORMAL OVER  
THE WEEKEND AND INTO MONDAY EXCEPT UP TO 10 DEGREES BELOW NORMAL FOR  
THE NW CA COAST SATURDAY AND CENTRAL AND SRN CA COAST MONDAY. MAX  
TEMPS COOL TO GENERALLY NEAR NORMAL TO 10 DEGREES BELOW NORMAL FOR  
MOST OF CA ON TUESDAY AND REMAIN AROUND 5 TO 15 DEGREES ABOVE NORMAL  
FOR NE CA AND MOST OF NV. OVERNIGHT LOWS GENERALLY NEAR NORMAL TO UP  
TO 15 DEGREES ABOVE NORMAL.  
 
QPF GRAPHICS ARE AVAILABLE AT WWW.CNRFC.NOAA.GOV/QPF.PHP  
 
OSBORNE  
 

 
 
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