Marine Interpretation Message
Issued by NWS

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AGNT40 KWNM 241825
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
225 PM EDT THU JUL 24 2014

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

SUMMARY...A COLD FRONT EXTENDS FROM THE ERN GULF OF MAINE SW TO
NR THE NORTH CAROLINA-VIRGINIA BORDER THIS AFTN. LOW PRES IS MOVG
NE ALONG THE FRONT OVR NRN NT1 WTRS. ANOTHER LOW IS FCST TO FORM
ALONG THE FRONT FURTHER TO THE S AND MOVE NE ALONG IT TNGT INTO
FRI. GALES ARE FCST AHEAD OF THE FRONT...E OF THE OFF WTRS TNGT
INTO FRI. OVR THE OFF WTRS...WIDESPREAD SHWR AND TSTM ACTIVITY IS
ASSOC WITH THE FRONT. SOME OF THE ACTIVITY IS QUITE HVY THIS AFTN
MAINLY FROM THE NORTH CAROLINA COAST E AND NE OVR CENTRAL AND NRN
NT1 OFF WTRS. WE WILL ATTEMPT TO HIGHLIGHT THE STRONGER WINDS IN
THESE TSTMS WITH THE AFTN PACKAGE. OTW...THE FRONT IS STILL FCST
TO STALL OVR CENTRAL NT2 WRS FRI AFTN INTO FRI NGT...AND SLWLY
DSIPT EARLY SAT AS IT DRIFTS BACK TO THE N. ANY TSTM ACTIVITY CAN
PRODUCE VRY GUSTY WINDS AND VRY ROUGH SEAS OVR THE OFF WTRS
DURING THE NEXT 24-36 HOURS. CONDITIONS ARE EXPECTED TO IMPROVE
AS THE FRONT DSIPTS FRI EVE INTO SAT. THE NEXT COLD FRONT WILL
APPROACH THE WTRS SUN INTO EARLY NEXT WK WITH AN INCREASE IN S-SW
WINDS AND TSTM ACTIVITY LKLY AT THAT TIME. THE FRONT WILL PUSH
OFFSHORE MON NGT INTO TUE AS LOW PRES TRACKS NE ALONG THE NEW
ENGLAND COAST. THE STRONGEST WINDS WILL CONT TO BE NR AND S OF
THE GULF STREAM INTO EARLY NEXT WK WITH MAX WINDS NR 30 KT STILL
LKLY IN THESE AREAS. IN THE COOLER SSTS N OF THE GULF STREAM
WINDS WILL BE SOMEWHAT LESS. OVERALL...NO MAJOR CHANGES FROM THE
PREV OPC FCST APPEARS NEEDED FOR THE AFTN PACKAGE...WITH CONFDC
LVLS AT NR TO ABV AVE.

MODELS...WE WILL CONT TO STAY CLOSE TO THE GFS ONCE AGAIN FOR THIS
PACKAGE AS IT REMAINS CONSISTENT AND IS IN GUD AGREEMENT WITH
MOST OF THE 12Z NON-GFS GUID. AS WAS NOTED PREV WE WILL USE 10M
WINDS THROUGHOUT...EXCEPT NEAR AND S OF THE GULF STREAM...MAINLY
OVR NE...CENTRAL...AND SRN NT2 WTRS...USE 30M WINDS TNGT INTO
EARLY SAT...AND AGAIN FROM NR 18Z SUN JUL 27TH THRU 12Z TUE...JUL
29TH AS THESE STRONGER WINDS CONT TO FIT CLOSER TO THE LATEST
WINDS DEPICTED BY EARLIER ASCAT PASSES.

SEAS...THE 12Z WNA AND MULTIGRID VERSIONS OF THE WW3 MDL GUID
APPEAR TO HAVE INITIALIZED WELL OVR THE OFF WTRS EARLY THIS AFTN.
WE WILL STAY CLOSE TO ITS GUID THROUGHOUT THE FCST PACKAGE...EXCEPT
TO ADD A FT OR TWO NR AND S OF THE GULF STREAM MAINLY SUN INTO
TUE...AND LOWER IT BY A FT OR SO N OF THE STREAM DURING THIS TIME
FRAME.

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

.WARNINGS...PRELIMINARY.

.NT1 NEW ENGLAND WATERS...
     NONE.

.NT2 MID ATLC WATERS...
     NONE.

$$

.FORECASTER MILLS. OCEAN PREDICTION CENTER.


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