BOSTON, MASSACHUSETTS, U.S.A. CALL SIGN FREQUENCIES TIMES (UTC) EMISSION POWER NMF 4235 kHz 0230z-1039 F3C 4 KW 6340.5 kHz ALL BROADCAST TIMES F3C 4 KW 9110 kHz ALL BROADCAST TIMES F3C 4 KW 12750 kHz 1400z-2239 F3C 4 KW TRANS TIME CONTENTS OF TRANSMISSION RPM/IOC VALID MAP TIME AREA 0230/1400 TEST PATTERN 120/576 0233/---- PRELIMINARY SURFACE ANALYSIS 120/576 0000 1 0243/1405 BROADCAST SCHEDULE (PART 1) 120/576 0254/1420 BROADCAST SCHEDULE (PART 2) 120/576 0305/1433 REQUEST FOR COMMENTS 120/576 ----/1443 PRODUCT NOTICE BULLETIN 120/576 ----/1453 PRELIMINARY SURFACE ANALYSIS 120/576 1200 1 ----/1503 SATELLITE IMAGE 120/576 1200 5 0315/1515 WIND/WAVE ANALYSIS 120/576 00/12 8 0325/1525 SURFACE ANALYSIS (PART 1 NE ATLANTIC) 120/576 00/12 2 0338/1538 SURFACE ANALYSIS (PART 2 NW ATLANTIC) 120/576 00/12 3 0351/---- SATELLITE IMAGE 120/576 0000 5 ----/1600 ICE CHART (REBROADCAST) 120/576 2100 ----/1720 TEST PATTERN 120/576 0402/1723 (REBROADCAST OF 0325/1525 NE ATLANTIC) 120/576 00/12 2 0415/1736 (REBROADCAST OF 0338/1538 NW ATLANTIC) 120/576 00/12 3 0428/1749 500MB ANALYSIS 120/576 00/12 4 ----/1759 SEA STATE ANALYSIS 120/576 1200 4 0438/---- ICE CHART (REBROADCAST) 120/576 2100 ----/1810 24HR SURFACE FORECAST 120/576 1200 4 0452/1824 CYCLONE DANGER AREA* or HIGH WIND/WAVES 120/576 03/15 7 ----/1835 24HR WIND/WAVE FORECAST 120/576 1200 4 ----/1855 24HR 500MB FORECAST 120/576 1200 4 0745/---- TEST PATTERN 120/576 0755/---- PRELIMINARY SURFACE ANALYSIS 120/576 0600 1 0805/---- 24HR SURFACE FORECAST 120/576 0000 4 0815/---- 24HR WIND/WAVE FORECAST 120/576 0000 4 0825/---- 24HR 500MB FORECAST 120/576 0000 4 0835/1905 36HR 500MB FORECAST 120/576 12/00 4 ----/1915 96HR SURFACE FORECAST 120/576 1200 4 ----/1925 96HR WIND/WAVE FORECAST 120/576 1200 4 ----/1935 96HR 500MB FORECAST 120/576 1200 4 ----/1945 96HR WAVE PERIOD FORECAST 120/576 1200 4 0845/1955 48HR SURFACE FORECAST 120/576 00/12 4 0855/2005 48HR WIND/WAVE FORECAST 120/576 00/12 4 0905/2015 48HR 500MB FORECAST 120/576 00/12 4 0915/2025 48HR WAVE PERIOD FORECAST 120/576 00/12 4 ----/2035 PRELIMINARY SURFACE ANALYSIS 120/576 1800 1 ----/2045 72HR SURFACE FORECAST 120/576 1200 4 ----/2055 72HR WIND/WAVE FORECAST 120/576 1200 4 ----/2105 72HR 500MB FORECAST 120/576 1200 4 ----/2115 72HR WAVE PERIOD FORECAST 120/576 1200 4 0925/2125 SURFACE ANALYSIS (PART 1 NE ATLANTIC) 120/576 06/18 2 0938/2138 SURFACE ANALYSIS (PART 2 NW ATLANTIC) 120/576 06/18 3 0951/2151 SATELLITE IMAGE 120/576 06/18 6 1002/2202 (REBROADCAST OF 0925/2125 NE ATLANTIC) 120/576 06/18 2 1015/2215 (REBROADCAST OF 0938/2138 NW ATLANTIC) 120/576 06/18 3 1028/2228 CYCLONE DANGER AREA* or HIGH WIND/WAVES 120/576 09/21 7 1039/2239 REBROADCAST/N American Ice Service Chart 120/576 21/21 * Tropical Cyclone Danger Area chart replaced by 48HR High Wind/Wave Warning chart Dec 01 - May 14 Valid times 00z,06z,12z and 18z, Map area 05N-40N, 35W-100W MAP AREAS 1. 28N-52N, 45W-85W 2. 18N-65N, 10E-45W 3. 18N-65N, 40W-95W 4. 18N-65N, 10E-95W 5. 20N-55N, 55W-95W 6. EQ-60N, 40W-130W 7. 05N-60N, 0W-100W 8. 22N-51N, 40W-98W NOTES: 1. CARRIER FREQUENCY IS 1.9 kHz BELOW THE ASSIGNED FREQUENCY Please send comments regarding Please send comments regarding the quality of these charts to: the quality of this broadcast to: NATIONAL WEATHER SERVICE/NOAA U.S. Coast Guard MARINE FORECAST BRANCH W/NP41 Communication Command (COMMCOM) 5200 AUTH ROAD 4720 DOUGLAS A. MUNRO RD. CAMP SPRINGS, MD 20746 CHESAPEAKE, VA 23322-2598 PHONE: (301) 763-8000 x 7401 (800) 742-8519 (757)421-6240 FAX: (301) 763-8085 COM-SMB-WATCH@uscg.mil EMAIL: ncep.list.opc_web@noaa.gov Tropical cyclone charts also broadcast from New Orleans, LA If you have access to the World Wide Web be certain to check out the following webpages. See these pages for further links. https://www.weather.gov NWS Homepage https://www.weather.gov/marine NWS Marine Page mobile.weather.gov Mobile Page (Schedule effective Sep 04, 2018 Information dated June 17, 2024)