Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 062122
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
222 PM PDT FRI MAY 6 2016

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

HIGH PRES 1030 MB STILL W OF THE CENTRAL REGION AND CONTINUES TO
HAVE HAS ITS RIDGE ACROSS THE NRN WATERS. A WEAKENING TROUGH ALSO
EXTENDS FROM INLAND LOW PRES INTO THE CENTRAL REGION WHERE MOST OF
THE CONVECTIVE CLOUDS ARE STILL PRESENT. LIGHTNING STRIKES ARE
STILL MAINLY OVER THE CENTRAL WATERS. MAXIMUM OBSERVED WINDS STILL
OVER THE CENTRAL WATERS IN THE GALE FORCE RANGE.

UPPER LEVEL RIDGE WITH LITTLE TO NO ENERGY IS STILL OVER THE
WESTERN PARTS OF THE WATERS WHILE AN UPPER LEVEL CUT OFF LOW WITH
SOME ENERGY OVER THE SOUTHERN HALF OF THE FORECAST WATERS HAS
SHIFTED SLIGHTLY E. IN THE SHORT TERM THE ENERGY OVER THE SRN
WATERS WILL PERSIST AND THAT WILL MAINTAIN A SURFCE LOW PRES
TROUGH OVR THE ERN PARTS OF THE CENTRAL REGION. THE UPPER LEVEL
RIDGE WILL ALSO PERSIST JUST W OF THE REGION AND WILL BLOCK A BAND
OF ENERGY JUST W OF IT FROM MOVING E INTO THE REGION.

THE GLOBAL MODELS HAVE CONTINUED TO INITIALIZE WELL AND THEY ARE
STILL IN DECENT AGREEMNET ON THE FEW SYNOPTIC FEATURES IMPACTING
THE WEATHER OVER THE REGION. THE MODELS GENERALLY CONTINUE TO
AGREE WELL IN THE EXTENDED PERIOD ON ALLOWING HIGH PRES RIDGE TO
PERSIST OVR THE ENTIRE REGION AND THAT WILL ALLOW THE WINDS TO
DIMINISH TO BELOW GALE FORCE RANGE OVER MOST OF THE FORECAST
WATERS. WILL STAY WITH GFS MODEL GUIDANCE FOR THIS FORECAST
PACKAGE. IN THE SHORT TERM HIGH PRES WILL PERSIST OVER THE WESTERN
PARTS WHILE THE INLAND TROUGH WILL CONTINUE TO WEAKEN AND ALLOW
THE WINDS TO DIMINISH TO BELOW GALE FORCE. IN THE EXTENDED PERIOD
HIGH PRES WILL CONTINUE TO BUILD INTO MOST OF THE REGION AND
MAINTAIN A RELAXED PRES GRADIENT OVER MOST OF THE REGION.

.SEAS...THE SEAS ARE STILL HIGHEST OVR THE CENTRAL WATERS PEAKING
AT 14 FT. SEAS RANGE BETWEEN 5 AND 12 FT ELSEWHERE. THE NWW3 MULTI
GRID WAVE MODEL IS VERY CLOSE TO THE OBSERVED SEAS PATTERN AND IS
ALSO IN GOOD AGREEMENT WITH THE ECMWFWAVE MODEL.

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

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
.PZZ800...INNER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER...
     GALE SAT NIGHT INTO SUN.
     GALE POSSIBLE SUN INTO SUN NIGHT.
     GALE POSSIBLE WED INTO WED NIGHT.
.PZZ900...OUTER WATERS FROM CAPE FLATTERY TO CAPE SHOALWATER...
     GALE POSSIBLE WED INTO WED NIGHT.
.PZZ815...INNER WATERS FROM FLORENCE OR TO POINT ST. GEORGE...
 GALE SAT.

.PZ6 CALIFORNIA WATERS...
.PZZ820...INNER WATERS FROM POINT ST. GEORGE TO POINT ARENA...
 GALE TONIGHT INTO SAT NIGHT.
.PZZ920...OUTER WATERS FROM POINT ST. GEORGE TO POINT ARENA...
     GALE SAT.

$$

.FORECASTER MUSONDA. OCEAN PREDICTION CENTER.


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