584  
AGPN40 KWNM 260951  
MIMPAC  
 
MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN  
NWS OCEAN PREDICTION CENTER WASHINGTON DC  
151 AM PST TUE JAN 26 2021  
   
FORECAST DISCUSSION
 
MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT  
.WEATHER FOR THE NORTH PACIFIC N OF 30N AND E OF 150W.  
 
AT 06Z/10 PM PST A 1033 MB HIGH PRESSURE SYSTEM WAS CENTERED TO  
THE W OF THE CENTRAL CA WATERS AND WILL WEAKEN WHILE DRIFTING W  
TO SW THROUGH TUE. THE OVERNIGHT ASCAT PASSES SHOW THE 16Z PASSES  
SHOW WINDS TO 35 KT OVER THE SOUTHERN CA WATERS. ELSEWHERE WINDS  
UP TO 30 KT ARE LOCATED OVER THE CENTRAL AND N CA OFFSHORE  
WATERS. FOR THE REST OF TONIGHT THE STRONGEST NLY WINDS TO 35 KT  
WILL BE ALONG THE INNER S CA WATERS. DURING THE DAY TODAY, A  
STRONG COLD FRONT WILL MOVE SE INTO THE WA/OR WATERS WITH A BROAD  
AREA OF LOW PRESSURE MOVING SE OVER THE OFFSHORE WATERS LATE  
TONIGHT INTO WED. WILL CONTINUE TO HAVE WINDS TO 45 KT IN ADVANCE  
OF THE COLD FRONT AND ALSO ASSOCIATED WITH THE LOW PRESSURE. THE  
AREA OF WINDS TO 45 KT WILL BE MORE WIDESPREAD OVER THE WA/OR  
OFFSHORE WATERS. OVER THE CA WATERS THE STRONG COLD FRONT WILL  
MOVE SE OVER THE N AND CENTRAL CA WATERS LATER TODAY INTO TONIGHT  
WITH GALES DURING THE FRONTAL PASSAGE, THEN INTO THE S CA WATERS  
WITH SUBGALE WINDS WED AND WED NIGHT. ANOTHER STRONG COLD FRONT  
WILL APPROACH THE WATERS BY THU NIGHT, AND MOVE INTO THE WA/OR  
WATERS FRI AND FRI NIGHT. ON SAT ANOTHER STRONG COLD FRONT WILL  
MOVE E INTO THE WA/OR WATERS, THEN INTO THE CA WATERS.  
 
FOR THE GRIDS WILL STAY WITH THE GFS THROUGH 15Z ON FRI, THEN  
USED THE ECMWF THROUGH THE REST OF THE PERIOD AS IT WAS A GOOD  
COMPROMISE WITH OTHER GUIDANCE. THERE IS DISAGREEMENT BY LATE  
FRI AMONG THE GUIDANCE ON LOW PRESSURE POSITION NEAR THE OUTER  
OR/WA WATER, WITH THE GFS FARTHER SOUTH THAN THE ECMWF/UKMET  
SOLUTIONS. WILL FAVOR THE ECMWF/UKMET SOLUTIONS FOR THIS TIME  
PERIOD.  
 
SEAS...USED A 1:1 BLEND OF THE OLD AND NEW WAVEWATCH GUIDANCE TO  
MATCH THE GFS THROUGH 15Z FRI. BEYOND THIS TIME, THE ECWAM WAS  
USED AS A NICE COMPROMISE WITH THE ECMWF SOLUTION INTO SAT.  
   
EXTRATROPICAL STORM SURGE GUIDANCE
 
NO SIGNIFICANT POSITIVE  
SURGE IS EXPECTED FOR THE NEXT FEW DAYS. PLEASE MONITOR THE  
LATEST FORECAST AND AS ALWAYS, KEEP ABREAST OF THE LATEST  
INFORMATION FROM LOCAL NATIONAL WEATHER SERVICE OFFICES.  
 
   
WARNINGS
 
PRELIMINARY.  
   
PZ5 WASHINGTON/OREGON WATERS
 
   
PZZ800...INNER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER
 
 
GALE TODAY INTO TONIGHT.  
GALE POSSIBLE SATURDAY.   
PZZ900...OUTER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER
 
 
GALE TODAY INTO TONIGHT.    
PZZ805...INNER WATERS FROM CAPE SHOALWATER TO CAPE LOOKOUT
 
 
GALE TODAY.  
GALE POSSIBLE SATURDAY.   
PZZ905...OUTER WATERS FROM CAPE SHOALWATER TO CAPE LOOKOUT
 
 
GALE TODAY.   
PZZ810...INNER WATERS FROM CAPE LOOKOUT TO FLORENCE OR
 
 
GALE TODAY.  
GALE POSSIBLE SATURDAY.   
PZZ910...OUTER WATERS FROM CAPE LOOKOUT TO FLORENCE OR
 
 
GALE TODAY.  
GALE POSSIBLE SATURDAY.   
PZZ815...INNER WATERS FROM FLORENCE OR TO POINT ST. GEORGE
 
 
GALE TODAY.  
GALE POSSIBLE FRIDAY NIGHT.  
GALE POSSIBLE SATURDAY NIGHT.   
PZZ915...OUTER WATERS FROM FLORENCE OR TO POINT ST. GEORGE
 
 
GALE TODAY.  
GALE POSSIBLE FRIDAY NIGHT.  
   
PZ6 CALIFORNIA WATERS
 
   
PZZ820...INNER WATERS FROM POINT ST. GEORGE TO POINT ARENA
 
 
GALE TODAY.  
GALE POSSIBLE FRIDAY NIGHT.   
PZZ920...OUTER WATERS FROM POINT ST. GEORGE TO POINT ARENA
 
 
GALE TODAY.  
GALE POSSIBLE FRIDAY NIGHT.   
PZZ825...INNER WATERS FROM POINT ARENA TO PIGEON POINT
 
 
GALE TODAY INTO TONIGHT.    
PZZ925...OUTER WATERS FROM POINT ARENA TO PIGEON POINT
 
 
GALE TODAY INTO TONIGHT.    
PZZ830...INNER WATERS FROM PIGEON POINT TO POINT PIEDRAS BLANCAS
 
 
GALE TONIGHT.   
PZZ930...OUTER WATERS FROM PIGEON POINT TO POINT PIEDRAS BLANCAS
 
 
GALE TONIGHT.   
PZZ835
 
INNER WATERS FROM POINT PIEDRAS BLANCAS TO SANTA CRUZ ISLAND, CA...  
GALE TONIGHT INTO WEDNESDAY.    
PZZ935
 
OUTER WATERS FROM POINT PIEDRAS BLANCAS TO SANTA CRUZ ISLAND, CA...  
GALE TONIGHT.  
 

 
 
.FORECASTER FOLMER. OCEAN PREDICTION CENTER.  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab HPC Page Main Text Page