Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 242131
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
231 PM PDT SAT SEP 24 2016

.FORECAST DISCUSSION...MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT
.WEATHER FOR THE NORTH PACIFIC N OF 30N AND E OF 150W.

AT 18Z A WARM FRONT WAS ENTERING THE OUTER WAS WATERS W/A HIGH
PRES RIDGE OVER THE REMAINDER OF THE WA/OR/CA OFFSHORE WATERS. A
LOW PRES TROUGH WAS PRESENT ALONG THE CA COAST EXTENDING INTO THE
FAR SRN OR COAST.

GLOBAL GUIDANCE HAS SHOWN GOOD RUN-TO-RUN CONSISTENCY OVER THE
LAST SEVERAL CYCLES AND THAT CONTINUED W/THE 12Z CYCLE. W/THAT
SAID FAVORED 12Z GFS 10M WINDS OVER THE FORECAST PERIOD. WARM
FRONT FORECAST TO MOVE THROUGH THE WA WATERS TONIGHT IS ON TRACK
PER AFOREMENTIONED 18Z SFC ANALYSIS. AN 1828Z ASCAT HIRES PASS
SHOWED 30 KT WINDS AHEAD OF THE WARM FRONT OVER THE OUTER WA
WATERS...W/AN AREA OF GALES JUST TO THE NW. DONT PLAN TO INTRODUCE
GALES INTO THE NRN WA WATERS TONIGHT AND INSTEAD CAP WINDS AT 30
KT AHEAD OF THE WARM FRONT. THE NEXT FRONTAL FEATURE WILL BE A
COLD FRONT EXPECTED TO MOVE THROUGH THE WA/OR WATERS MON NIGHT
INTO TUE. BY WED NIGHT INTO THU A BROAD BUT WEAK LOW AND FRONT ARE
EXPECTED TO TRAVERSE THE WA/OR WATERS W/PRETTY GOOD AGREEMENT
AMONG THE GUIDANCE CONSIDERING ITS DAY 5.

OUTSIDE OF THESE FRONTAL PASSAGES HIGH PRES RIDGING WILL REMAIN A
DOMINATE FEATURE...ESPECIALLY OVER THE CA WATERS. THE LOW PRES
TROUGH ALONG THE CA/OR COAST STILL EXPECTED TO STRENGTHEN TUE
INTO WED NIGHT BEFORE WEAKENING THU AND THU NIGHT. WINDS WILL
INCREASE ALONG THE SRN OR/NRN CA WATERS IN RESPONSE TO THE
STRENGTHENING TROUGH AND HIGH PRES RIDGE W/THE 12Z GFS/CMC
SUGGESTING GALES POSSIBLE IN THE ADJACENT COASTAL WATERS AT THE
MOMENT. FOR NOW WILL CAP WINDS AT 30 KT IN SAID REGIONS.

.SEAS...FAVORED 12Z NWW3 OVER THE 5 DAY FORECAST PERIOD GIVEN
CHOICE TO USE 12Z GFS 10M WINDS OVER THE PERIOD.

.EXTRATROPICAL STORM SURGE GUIDANCE...N/A.


.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

NOTE: ON OCTOBER 06, 2016...THE NWS FTPMAIL SERVICE WILL DISABLE
THE CURRENT EMAIL ADDRESS. THE NEW EMAIL ADDRESS IS LIVE NOW.
PLEASE TRANSITION TO IT AS SOON AS POSSIBLE TO AVOID A SERVICE
DISRUPTION.

NEW EMAIL ADDRESS...NWS.FTPMAIL.OPS@NOAA.GOV
/ALL LOWER CASE LETTERS/

FOR THE SERVICE CHANGE NOTICE...PLEASE GO TO
HTTP://WWW.NWS.NOAA.GOV/OS/NOTIFICATION/SCN16-37FTPMAIL.HTM
/ALL LOWER CASE LETTERS/

.FORECASTER HOLLEY. OCEAN PREDICTION CENTER.



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