430  
FNUS86 KMFR 142228  
FWLMFR  
 
ECCDA DISCUSSIONS FOR YREKA AND MODOC CALIFORNIA DISPATCH AREAS  
NATIONAL WEATHER SERVICE MEDFORD OR  
228 PM PST THU DEC 14 2017  
 
ECC002-151630-  
WEST YREKA-  
DISCUSSION FOR WESTERN KLAMATH  
228 PM PST THU DEC 14 2017  
 
VALLEY INVERSIONS WILL CONTINUE THROUGH FRIDAY MORNING, BUT THE  
UPPER RIDGE WILL FINALLY WEAKEN DURING THE DAY FRIDAY AS A FRONTAL  
SYSTEM APPROACHES. THIS FRONT MOVES THROUGH FRIDAY AFTERNOON AND  
EVENING AND WILL PRODUCE LIGHT RAIN AND SNOW OVER NORTHERN  
CALIFORNIA. UPPER LEVEL HIGH PRESSURE AND THE RESULTING VALLEY  
INVERSIONS RETURNS OVER THE WEEKEND AND REMAINS IN PLACE THROUGH  
TUESDAY. A COLDER, WETTER FRONTAL SYSTEM WILL MOVE THROUGH  
NORTHERN CALIFORNIA TUESDAY NIGHT AND WEDNESDAY.  
 

 
 
ECC102-151630-  
EAST YREKA-  
DISCUSSION FOR EASTERN KLAMATH  
228 PM PST THU DEC 14 2017  
 
VALLEY INVERSIONS WILL CONTINUE THROUGH FRIDAY MORNING, BUT THE  
UPPER RIDGE WILL FINALLY WEAKEN DURING THE DAY FRIDAY AS A FRONTAL  
SYSTEM APPROACHES. THIS FRONT MOVES THROUGH FRIDAY AFTERNOON AND  
EVENING AND WILL PRODUCE LIGHT RAIN AND SNOW OVER NORTHERN  
CALIFORNIA. UPPER LEVEL HIGH PRESSURE AND THE RESULTING VALLEY  
INVERSIONS RETURNS OVER THE WEEKEND AND REMAINS IN PLACE THROUGH  
TUESDAY. A COLDER, WETTER FRONTAL SYSTEM WILL MOVE THROUGH  
NORTHERN CALIFORNIA TUESDAY NIGHT AND WEDNESDAY.  
 

 
 
ECC003-151630-  
ALTURAS-  
DISCUSSION FOR MODOC  
228 PM PST THU DEC 14 2017  
 
VALLEY INVERSIONS WILL CONTINUE THROUGH FRIDAY MORNING, BUT THE  
UPPER RIDGE WILL FINALLY WEAKEN DURING THE DAY FRIDAY AS A FRONTAL  
SYSTEM APPROACHES. THIS FRONT MOVES THROUGH FRIDAY AFTERNOON AND  
EVENING AND WILL PRODUCE LIGHT RAIN AND SNOW OVER NORTHERN  
CALIFORNIA. UPPER LEVEL HIGH PRESSURE AND THE RESULTING VALLEY  
INVERSIONS RETURNS OVER THE WEEKEND AND REMAINS IN PLACE THROUGH  
TUESDAY. A COLDER, WETTER FRONTAL SYSTEM WILL MOVE THROUGH  
NORTHERN CALIFORNIA TUESDAY NIGHT AND WEDNESDAY.  
 

 
 
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