Marine Interpretation Message
Issued by NWS

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000
AGNT40 KWNM 030718
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
318 AM EDT MON AUG 3 2015

.FORECAST DISCUSSION: MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT
.WEATHER FOR THE NORTH ATLANTIC OCEAN W OF 50W FROM 30N TO 50N.

SUMMARY...00Z NCEP SFC ANALYSIS SHOWS A STNRY FNT EXTNDG NE TO SW
ACROSS THE SRN/CNTRL NT2 WTRS. OTHERWISE...WEAK HI PRES RIDGING
PREVAILS OVER THE OFSHR WTRS. LATEST AVAIL ASCAT-B PASSES FROM
THIS EVNG SHOWED A NARROW SWATH OF 20 TO 25 KT WINDS IN S TO SW
FLOW OVER THE WRN PARTS OF THE SRN NT2 WTRS...AND ALSO OVER THE
FAR ERN PART OF THE NRN NT2 WTRS. LIGHTNING DENSITY PRODUCT DATA
AT 0650Z SHOWS AREAS OF SCT SHOWERS/TSTMS ACROSS MUCH OF THE NT2
AREA VCNTY OF THE STNRY FNT. A WEAK COLD FNT WILL PASS SE OVER THE
OFSHR WTRS TUE NITE THRU WED NITE...THEN BCM STNRY ACROSS THE NRN
NT2 WTRS THU THRU FRI NITE. A COUPLE OF LOWS WILL MOVE OFF CAPE
HATTERAS AND PASS NE ALONG THE FNTL BNDRY LATE THU THRU FRI NITE.

MODELS...THE 00Z MED RNG MDLS ARE IN GUD OVERALL AGREEMNT ACROSS
THE OFSHR WTRS THRU THU...EXCEPT THE 00Z UKMET LOOKS LIKE AN
OUTLYER SOLN BECAUSE IT HAS A DVLPG LOW ALONG THE COLD FNT. THE
00Z GEM IS AN OUTLYER SOLN FOR FRI AND FRI NITE SINCE IT TAKES A
DEEP/STRONG LOW NE OFF THE NEW JERSEY COAST. 00Z ECMWF/GFS ARE IN
BEST AGREEMNT THRU THE FCST PRD...ALTHO THERE ARE SOME TIMING
DIFFS ON FRI AND FRI NITE. WILL BE USING 00Z GFS TO POPULATE THE
WIND GRIDS FOR TONITE THRU THU...THEN SWITCH TO A REPRESENTATIVE
50/50 BLEND OF THE 00Z ECMWF/GFS FOR THU NITE THRU FRI NITE.

SEAS...WNA VERSION OF THE 00Z WAVEWATCH III MDL AND 00Z ECMWF WAM
BOTH INITIALIZED WELL OVER THE OFSHR WTRS. IN ORDER TO MATCH UP
WITH THE PREFERRED ATMOS MDLS...00Z WNA WW3 WILL BE USED FOR
TONITE THRU THU BEFORE SWITCHING TO A 50/50 BLEND OF THE 00Z WNA
WW3/ECMWF WAM FOR THU NITE THRU FRI NITE.

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

.WARNINGS...PRELIMINARY.

.NT1 NEW ENGLAND WATERS...
     NONE.

.NT2 MID ATLC WATERS...
     NONE.

$$

.FORECASTER SCOVIL. OCEAN PREDICTION CENTER.


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