Marine Interpretation Message
Issued by NWS

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 291257 MIMATN MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN NWS OCEAN PREDICTION CENTER WASHINGTON DC 900 AM EDT TUE 29 JUL 2014 .FORECAST DISCUSSION: MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT .WEATHER FOR THE NORTH ATLANTIC OCEAN W OF 50W FROM 30N TO 50N. BASED ON LAST NGTS HI RES ASCAT OVERPASS WILL BE UPDATING OFFSHORE WIND GRIDS E OF COLD FRONT WITH 06Z GFS BNDRY LAYER WINDS OVER NEXT 48HRS. SSTS N OF GULF STREAM OVER NERN MID ATLC ZONES SPECIFICALLY ANZ905 AND NRN PART OF ANZ910 ARE AS HIGH AS 27C TO 28C. ALSO 00Z UKMET AND 00Z ECMWF ADVERTISE SFC WINDS AS HIGH AS 30 KT OVER THESE AREAS EARLY WED AS SFC LOW MOVES NE ALONG FRONT. OTHERWISE WILL NOT BE MAKING MUCH ADJUSTMENT TO PREVIOUS OFFSHORE FORECASTS/GRIDS. 06Z MULTIGRID WAVEWATCH III LOOKS REASONABLE WHEN COMPARED TO THE LATEST W ATLC SHIP/BUOY OBS OVER THE PAST FEW HRS. ---------------------------------------------------------------- ...PREVIOUS DISCUSSION... LOW PRES WAS MOVG N ACRS MAINE WHILE INTENSIFYING EARLY THIS MRNG. AN ASSOC CD FNT WAS MOVG OFFSHR THIS MRNG WITH HVY CONVECTION INADVOF FNT OVR THE MID ATLC WTRS AND ALG AND JUST E OF THE NEW ENGLAND WTRS. THERE WAS A SHIP OBS NR GEORGES BANK WITH GUSTS TO GALE FORCE EARLY THIS MRNG. EARLIER ASCAT PASS FM 10 PM EDT HAD A SWATH ALG THE ERN NEW ENGLAND INTO THE NRN MID ATLC WTRS E OF 71W SHOWING IN THE AREA OF TSTMS WINDS TO 35 KT. WL CONT TO INDICATE IN FCST OVR THE ERN AREAS OF MID ATLC WINDS GUSTING TO GALE FORCE IN HVY TSTMS. ELSW ALG THE SC COAST THIS MRNG LOW PRES SHUD BE MOVG OFFSHR AND THEN NE ALG THE FNT TDY. EARLIER ASCAT PASS FM 10 PM EDT HAD WINDS TO 30 KT IN THIS REGION JUST W OF 76W. THE STGST AREA OF S TO SWLY FLW MOVS E OF THE AREA WITH THE EXCEPTION FAR ERN AREAS OF THE OFFSHR WTRS TDY. LOW PRES ALG SC COAST MOVS NEWD INTO THE NEW ENGLAND LATE WED AND WED NGT. GFS IS FASTER MOVG LOW PRES INTO THE NEW ENGLAND WTRS WHILE UKMET/12Z ECMWF ARE FURTHER S AND SLOWER. STGST WINDS RMN TO THE E OF THE LOW WITH WINDS TO 30 KT. THE FNTL BOUNDARY EVENTUALLY STALLS ALG OR JUST E OF THE OFFSHR WTRS TUE NGT INTO THU...THEN DRIFTS W OR NW INTO THE WTRS FRI AND SAT AS HIGH PRES EXPANDS E OF THE AREA. PLAN TO FAVOR THE GFS THRU SAT NGT WHICH LOOKS SMLR TO THE GEM/UKMET WITH THEIR SYNOPTIC PATTERN. SEAS...00Z WWIII LOOKS OK AND DOES NOT DIFFER MUCH FM EARLIER 18Z GUID. OBS SEAS WHEN COMPARED TO WWIII GUID SHOW MOST OF REGION CLOSE TO GUID. SHUD XPCT SEAS TO BE HIGHER IN AND NR THE HEAVIER TSTMS TDY. ONLY EXCEPTION WHERE SEAS SEEM OVERDONE APRS TO BE OVR THE NRN NEW ENGLAND WTRS IN GLF OF ME WHICH ARE A CPL OF FT LWR THAN GUID. .EXTRATROPICAL STORM SURGE GUIDANCE...N/A. .WARNINGS...PRELIMINARY. .NT1 NEW ENGLAND WATERS... NONE. .NT2 MID ATLC WATERS... NONE. $$ .FORECASTER CLARK. 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.