069  
FNUS86 KSGX 200924  
FWLSGX  
 
ECCDA DISCUSSIONS  
NATIONAL WEATHER SERVICE SAN DIEGO CA  
224 AM PDT WED OCT 20 2021  
 
ECC033-210330-  
ORANGE ECC DISPATCH-  
DISCUSSION FOR ORANGE ECC DISPATCH  
224 AM PDT WED OCT 20 2021  
 
WARMER AND DRIER INLAND THROUGH THURSDAY WITH WEAK HIGH PRESSURE  
ALOFT AND WEAK ONSHORE FLOW. ONSHORE FLOW WILL STRENGTHEN FOR FRIDAY  
THROUGH THE WEEKEND WITH THE MARINE LAYER DEEPENING ONTO THE  
COASTAL SLOPES OF THE MOUNTAINS FOR THE WEEKEND. COOLING AND HIGHER  
COASTAL HUMIDITY WILL SPREAD INLAND WITH GUSTY SOUTHWEST TO WEST  
WINDS IN THE MOUNTAINS AND DESERTS. A LOW PRESSURE SYSTEM MOVING  
INLAND THROUGH CENTRAL CALIFORNIA WILL SPREAD RAIN ACROSS SOUTHWEST  
CALIFORNIA ON MONDAY, DECREASING MONDAY NIGHT AND ENDING TUESDAY  
MORNING. THERE WILL ALSO BE STRONGER AND GUSTY SOUTHWEST TO WEST  
WINDS IN THE MOUNTAINS AND DESERTS ON MONDAY. THEN WARMER AND DRY  
FOR THE MIDDLE OF NEXT WEEK.  
 

 
 
ECC035-210330-  
MONTE VISTA ECC DISPATCH-  
DISCUSSION FOR MONTE VISTA ECC DISPATCH  
224 AM PDT WED OCT 20 2021  
 
WARMER AND DRIER INLAND THROUGH THURSDAY WITH WEAK HIGH PRESSURE  
ALOFT AND WEAK ONSHORE FLOW. ONSHORE FLOW WILL STRENGTHEN FOR FRIDAY  
THROUGH THE WEEKEND WITH THE MARINE LAYER DEEPENING ONTO THE  
COASTAL SLOPES OF THE MOUNTAINS FOR THE WEEKEND. COOLING AND HIGHER  
COASTAL HUMIDITY WILL SPREAD INLAND WITH GUSTY SOUTHWEST TO WEST  
WINDS IN THE MOUNTAINS AND DESERTS. A LOW PRESSURE SYSTEM MOVING  
INLAND THROUGH CENTRAL CALIFORNIA WILL SPREAD RAIN ACROSS SOUTHWEST  
CALIFORNIA ON MONDAY, DECREASING MONDAY NIGHT AND ENDING TUESDAY  
MORNING. THERE WILL ALSO BE STRONGER AND GUSTY SOUTHWEST TO WEST  
WINDS IN THE MOUNTAINS AND DESERTS ON MONDAY. THEN WARMER AND DRY  
FOR THE MIDDLE OF NEXT WEEK.  
 

 
 
ECC034-210330-  
RIVERSIDE ECC DISPATCH-  
DISCUSSION FOR RIVERSIDE ECC DISPATCH  
224 AM PDT WED OCT 20 2021  
   
..DISCUSSION FROM LAXFWFSGX
 
 
WARMER AND DRIER INLAND THROUGH THURSDAY WITH WEAK HIGH PRESSURE  
ALOFT AND WEAK ONSHORE FLOW. ONSHORE FLOW WILL STRENGTHEN FOR FRIDAY  
THROUGH THE WEEKEND WITH THE MARINE LAYER DEEPENING ONTO THE  
COASTAL SLOPES OF THE MOUNTAINS FOR THE WEEKEND. COOLING AND HIGHER  
COASTAL HUMIDITY WILL SPREAD INLAND WITH GUSTY SOUTHWEST TO WEST  
WINDS IN THE MOUNTAINS AND DESERTS. A LOW PRESSURE SYSTEM MOVING  
INLAND THROUGH CENTRAL CALIFORNIA WILL SPREAD RAIN ACROSS SOUTHWEST  
CALIFORNIA ON MONDAY, DECREASING MONDAY NIGHT AND ENDING TUESDAY  
MORNING. THERE WILL ALSO BE STRONGER AND GUSTY SOUTHWEST TO WEST  
WINDS IN THE MOUNTAINS AND DESERTS ON MONDAY. THEN WARMER AND DRY  
FOR THE MIDDLE OF NEXT WEEK.  
   
..DISCUSSION FROM PHXFWFPSR
 
 
WEAK HIGH PRESSURE WILL BRING CONTINUED DRY CONDITIONS AND WARMER  
TEMPERATURES THROUGH THURSDAY. WINDS WILL BE LIGHT AND GENERALLY  
FOLLOW TYPICAL DIURNAL WIND PATTERNS. MIN RHS WILL GENERALLY RANGE  
FROM 20-25% TODAY, LOWERING TO 15-20% ON THURSDAY, WHILE OVERNIGHT  
RH RECOVERIES RANGE FROM 35-60% FOR MOST LOWER DESERT LOCATIONS.  
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND IN  
THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
 

 
 
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