Marine Interpretation Message
Issued by NWS

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000
AGPN40 KWNM 061400
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
600 AM PST FRI MAR 6 2015

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

SIG CHANGES TO GRIDS AND TEXT FORECASTS WILL BE MADE THIS MORNING.
UPR RIDGE RMNS STNRY ACRS THE EPAC THRU MON NIGHT RESULTING IN
TRANQUIL SFC CONDS - BOTH WINDS/SEAS - OVR THE OPC OFSHR ZNS. ALL
00Z/06Z GLB MDL CYCLES STILL INDC PATTERN SHIFT ERLY/MIDDLE NXT
WK AS UPR RIDGE NOSES INLAND...AND CUTOFF UPR LOW SLOWLY PUSHES
E-WARD. MODEL AGREEMENT TANKS AFTER D4 AND IN PARTICULAR D5 AS
BROAD SFC LOW IMPACTS NRN OFSHR WTRS WITH ALL GUID OFFERING DIFF
SOLNS. WITH STARK MODEL DISCREPANCIES ON STRENGTH OF THE S-SW-LY
FLOW TUE AND TUE NGT...AND WITH LITTLE RUN TO RUN GFS CONSISTENCY
WITH PLACEMENT OF LOWS WITHIN THE BROAD CIRCULATION...WL RE-POP
GRIDS BASED ON THE FOLLOWING:

06Z GFS THROUGH 21Z MON...THEN 00Z ECMWF 00Z TUE ONWARDS.

THIS HAS BEEN THE PREFERRED SOLN FOR A FEW SHIFTS. THIS WL KEEP
WINDS BLO GALE WARNING CRITERIA TUE AND TUE NGT AS ASCTD FRONT
MAKES ITS WAY INTO AND ACRS THE PZ5 WTRS. WL RE-EVALUATE FCST
BASED ON 12Z GUID ACCORDINGLY THIS AFTN.

SEAS...SIG WVHT GRIDS WL ALSO BE CHANGED TO REFLECT THE ABV.
LATEST ENP WW3 INTO 21Z MON...THEN A SWITCH TO THE 00Z ECMWF WAM
THEREAFTER.

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


.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER COLLINS. OCEAN PREDICTION CENTER.



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