Marine Interpretation Message
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
AGNT40 KWNM 250105
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
905 PM EDT SUN MAY 24 2015

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


QUIET CONDS CONT ACXROSS THE WRN ATLC THIS EVENING. HIGHEST
WINDS...SW MAINLY 15 TO 20 KT ARE IN THE GF OF MAINE. SEAS ARE AVG
ABOUT 1 TO 2 BELOW THE WAVEWATCH OVER THE GULF OF MAINE AND WL BE
ADJUSTED IN THE FCST UPDATE. OTW...LITTLE TO NO CHANGE.

-----------------------------------------------------------------
PREVIOUS DISCUSSION...

SUMMARY...LATEST AVAIL ASCAT PASSES FROM 1431Z TO 1435Z SHOWED
LIGHT WINDS ACROSS THE WRN NT2 WTRS...WITH HIGHEST WINDS UP TO 20
KT OVER THE SRN NT2 ZONES. A HIGH PRES RIDGE WILL PERSIST OVER THE
NT2 AREA THRU THE FCST PRD...WHILE GRADUALLY WEAKENING. A WEAK
COLD FRONT WILL MOVE SE AND APRCH THE GULF OF MAINE TODAY...THEN
DSIPT NEAR THE COAST TONIGHT. A WARM FRONT WILL LIFT NE ACROSS THE
NT1 WTRS LATE MON INTO TUE. A SERIES OF LOWS WILL PASS N OF THE
NT1 AREA TUE INTO THU. A DISSIPATING COLD FRONT WILL MOVE SE INTO
THE GULF OF MAINE THU NITE. ANOTHER WARM FRONT WILL PASS NW AND N
OF THE NT1 AREA ON FRI AND FRI NITE.

MODELS...THE 12Z MED RNG MDLS ARE IN VRY GUD AGREEMNT ACROSS THE
CSTL/OFSHR WTRS INTO THU...SO THE REPRESENTATIVE 12Z GFS 10M SOLN
WILL BE USED TO POPULATE THE WIND GRIDS FOR THIS TIMEFRAME. GIVEN
THAT IT HAS BETTER SUPPORT FROM THE 12Z UKMET AND LATEST WPC MED
RNG FCSTR GUIDANCE CONCERNING TIMING OF THE MAIN FTRS N OF
40N...THE 12Z ECMWF WILL BE USED FOR LATE THU THRU FRI NITE.

.SEAS...DIFFS BTWN THE 12Z WAVEWATCH III MDL AND 12Z ECMWF WAM
ARE MAINLY MINIMAL (1 TO 2 FT) DURING THE FCST PRD...SO WILL USE A
50/50 BLEND OF THE 12Z WAVEWATCH III/ECMWF WAM FOR TONITE THRU
FRI NITE TO SMOOTH OUT THESE DIFFS.

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


.WARNINGS...PRELIMINARY.

.NT1 NEW ENGLAND WATERS...
     NONE.

.NT2 MID ATLC WATERS...
     NONE.

$$

.FORECASTER PROSISE/SCOVIL. OCEAN PREDICTION CENTER.


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.