Alert archive / Puerto Rico / Small Craft Advisories in 2018
Small Craft Advisory 18, NWS JSJ
NWS JSJ issued this small craft advisory at Mar 13, 2018, 3:24 AM CDT. It took effect at Mar 14, 2018, 1:00 PM CDT. It was in force for 38 hr.
The area
The counties it named.
The facts
- Issued
- Mar 13, 2018, 3:24 AM CDT (08:24 UTC)
- In effect from
- Mar 14, 2018, 1:00 PM CDT
- Expired
- Mar 16, 2018, 3:00 AM CDT
- In force
- 38 hr
- Issued by
- NWS JSJ
The text
As transmitted.
402 WHCA72 TJSJ 130824 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 424 AM AST Tue Mar 13 2018 ...A northeast swell will invade the Atlantic waters tonight, resulting in hazardous seas until at least Thursday... AMZ710-712-131630- /O.NEW.TJSJ.SC.Y.0018.180314T1000Z-180315T1800Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- 424 AM AST Tue Mar 13 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM WEDNESDAY TO 2 PM AST THURSDAY... The National Weather Service in San Juan has issued a Small Craft Advisory, which is in effect from 6 AM Wednesday to 2 PM AST Thursday. * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...5 to 7 feet with occassional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$
11 follow-up statements
988 WHCA72 TJSJ 131423 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 1023 AM AST Tue Mar 13 2018 ...A northeast swell will invade the Atlantic waters late tonight, resulting in hazardous seas until at least Thursday... AMZ710-712-132230- /O.CON.TJSJ.SC.Y.0018.180314T1000Z-180315T1800Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- 1023 AM AST Tue Mar 13 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 6 AM WEDNESDAY TO 2 PM AST THURSDAY... * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$
731 WHCA72 TJSJ 132103 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 503 PM AST Tue Mar 13 2018 ...A long period northeast swell will invade the offshore Atlantic waters overnight followed by another long period northwest swell by Wednesday afternoon, resulting in hazardous seas until at least Thursday... AMZ715-140515- /O.EXB.TJSJ.SC.Y.0018.180315T0600Z-180316T0600Z/ Coastal Waters of Northern USVI and Culebra out 10 NM- 503 PM AST Tue Mar 13 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM THURSDAY TO 2 AM AST FRIDAY... The National Weather Service in San Juan has issued a Small Craft Advisory, which is in effect from 2 AM Thursday to 2 AM AST Friday. * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ710-712-140515- /O.EXT.TJSJ.SC.Y.0018.180314T1800Z-180316T0600Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- 503 PM AST Tue Mar 13 2018 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 2 PM WEDNESDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$
888 WHCA72 TJSJ 140053 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 853 PM AST Tue Mar 13 2018 ...A long period northeast swell will invade the offshore Atlantic waters overnight followed by another long period northwest swell by Wednesday afternoon, resulting in hazardous seas until at least Thursday... AMZ710-712-141000- /O.CON.TJSJ.SC.Y.0018.180314T1800Z-180316T0600Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- 853 PM AST Tue Mar 13 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM WEDNESDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ715-141000- /O.CON.TJSJ.SC.Y.0018.180315T0600Z-180316T0600Z/ Coastal Waters of Northern USVI and Culebra out 10 NM- 853 PM AST Tue Mar 13 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$
418 WHCA72 TJSJ 140728 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 328 AM AST Wed Mar 14 2018 ...A long period northeast swell will fade and another long period northwest swell will move in by this afternoon, resulting in hazardous seas until at least Thursday... AMZ741-141530- /O.EXB.TJSJ.SC.Y.0018.180315T1200Z-180316T0600Z/ Mona Passage Southward to 17N- 328 AM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM THURSDAY TO 2 AM AST FRIDAY... The National Weather Service in San Juan has issued a Small Craft Advisory, which is in effect from 8 AM Thursday to 2 AM AST Friday. * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...Increasing to 5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ742-745-141530- /O.EXB.TJSJ.SC.Y.0018.180315T1800Z-180316T0600Z/ Coastal Waters OF Northwestern Puerto Rico out 10 NM- Coastal Waters OF Southwestern Puerto Rico out 10 NM- 328 AM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM THURSDAY TO 2 AM AST FRIDAY... The National Weather Service in San Juan has issued a Small Craft Advisory, which is in effect from 2 PM Thursday to 2 AM AST Friday. * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ710-712-141530- /O.CON.TJSJ.SC.Y.0018.180314T1800Z-180316T0600Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- 328 AM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...6 to 8 feet with occasional seas up to 10 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ715-141530- /O.CON.TJSJ.SC.Y.0018.180315T0600Z-180316T0600Z/ Coastal Waters of Northern USVI and Culebra out 10 NM- 328 AM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$
623 WHCA72 TJSJ 141349 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 949 AM AST Wed Mar 14 2018 ...A long period northeast swell will fade and another long period northwest swell will move in by this afternoon, resulting in hazardous seas until at least Thursday... AMZ710-712-142200- /O.CON.TJSJ.SC.Y.0018.180314T1800Z-180316T0600Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- 949 AM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...6 to 8 feet with occasional seas up to 10 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ715-142200- /O.CON.TJSJ.SC.Y.0018.180315T0600Z-180316T0600Z/ Coastal Waters of Northern USVI and Culebra out 10 NM- 949 AM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ741-142200- /O.CON.TJSJ.SC.Y.0018.180315T1200Z-180316T0600Z/ Mona Passage Southward to 17N- 949 AM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...Increasing to 5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ742-745-142200- /O.CON.TJSJ.SC.Y.0018.180315T1800Z-180316T0600Z/ Coastal Waters OF Northwestern Puerto Rico out 10 NM- Coastal Waters OF Southwestern Puerto Rico out 10 NM- 949 AM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$
112 WHCA72 TJSJ 142103 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 503 PM AST Wed Mar 14 2018 ...A long period northeast swell will fade and another long period northwest swell will move in by tonight, resulting in hazardous seas until at least early Friday morning... AMZ710-712-150515- /O.CON.TJSJ.SC.Y.0018.000000T0000Z-180316T0600Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- 503 PM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...6 to 8 feet with occasional seas up to 10 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ715-150515- /O.CON.TJSJ.SC.Y.0018.180315T0600Z-180316T0600Z/ Coastal Waters of Northern USVI and Culebra out 10 NM- 503 PM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ741-150515- /O.CON.TJSJ.SC.Y.0018.180315T1200Z-180316T0600Z/ Mona Passage Southward to 17N- 503 PM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...Increasing to 5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ742-745-150515- /O.CON.TJSJ.SC.Y.0018.180315T1800Z-180316T0600Z/ Coastal Waters OF Northwestern Puerto Rico out 10 NM- Coastal Waters OF Southwestern Puerto Rico out 10 NM- 503 PM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$
856 WHCA72 TJSJ 150100 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 900 PM AST Wed Mar 14 2018 ...A long period northwest swell will move in by tonight, resulting in hazardous seas until at least early Friday morning... AMZ710-712-150900- /O.CON.TJSJ.SC.Y.0018.000000T0000Z-180316T0600Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- 900 PM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...6 to 8 feet with occasional seas up to 10 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ715-150900- /O.CON.TJSJ.SC.Y.0018.180315T0600Z-180316T0600Z/ Coastal Waters of Northern USVI and Culebra out 10 NM- 900 PM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ741-150900- /O.CON.TJSJ.SC.Y.0018.180315T1200Z-180316T0600Z/ Mona Passage Southward to 17N- 900 PM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...Increasing to 5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ742-745-150900- /O.CON.TJSJ.SC.Y.0018.180315T1800Z-180316T0600Z/ Coastal Waters OF Northwestern Puerto Rico out 10 NM- Coastal Waters OF Southwestern Puerto Rico out 10 NM- 900 PM AST Wed Mar 14 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THURSDAY TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$
123 WHCA72 TJSJ 150744 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 344 AM AST Thu Mar 15 2018 ...A long period northwest swell arriving this morning, will result in hazardous seas until early Friday morning... AMZ742-151545- /O.EXT.TJSJ.SC.Y.0018.180315T1200Z-180316T0600Z/ Coastal Waters OF Northwestern Puerto Rico out 10 NM- 344 AM AST Thu Mar 15 2018 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 8 AM THIS MORNING TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 5 to 10 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ710-712-715-151545- /O.CON.TJSJ.SC.Y.0018.000000T0000Z-180316T0600Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- Coastal Waters of Northern USVI and Culebra out 10 NM- 344 AM AST Thu Mar 15 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 20 knots. * WAVES/SEAS...6 to 8 feet with occasional seas up to 10 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ741-151545- /O.CON.TJSJ.SC.Y.0018.180315T1200Z-180316T0600Z/ Mona Passage Southward to 17N- 344 AM AST Thu Mar 15 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...Increasing to 5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ745-151545- /O.CON.TJSJ.SC.Y.0018.180315T1800Z-180316T0600Z/ Coastal Waters OF Southwestern Puerto Rico out 10 NM- 344 AM AST Thu Mar 15 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 2 AM AST FRIDAY... * WINDS...Southeast winds between 5 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$
450 WHCA72 TJSJ 151530 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 1130 AM AST Thu Mar 15 2018 ...A long period northwest swell arriving this morning, will result in hazardous seas until early Friday morning... AMZ710-712-715-741-742-152330- /O.CON.TJSJ.SC.Y.0018.000000T0000Z-180316T0600Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- Coastal Waters of Northern USVI and Culebra out 10 NM- Mona Passage Southward to 17N- Coastal Waters OF Northwestern Puerto Rico out 10 NM- 1130 AM AST Thu Mar 15 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM AST FRIDAY... * WINDS...Southeast winds between 10 to 15 knots. * WAVES/SEAS...6 to 8 feet with occasional seas up to 10 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$ AMZ745-152330- /O.CON.TJSJ.SC.Y.0018.180315T1800Z-180316T0600Z/ Coastal Waters OF Southwestern Puerto Rico out 10 NM- 1130 AM AST Thu Mar 15 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM AST FRIDAY... * WINDS...Southeast winds between 5 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots are expected to produce hazardous wave conditions to small craft. Inexperienced mariners...especially those operating smaller vessels should avoid navigating in these conditions. && $$
353 WHCA72 TJSJ 152007 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 407 PM AST Thu Mar 15 2018 ...A long period northwest swell will result in hazardous seas until early Friday morning... AMZ710-712-715-741-742-745-160415- /O.CON.TJSJ.SC.Y.0018.000000T0000Z-180316T0600Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- Coastal Waters of Northern USVI and Culebra out 10 NM- Mona Passage Southward to 17N- Coastal Waters OF Northwestern Puerto Rico out 10 NM- Coastal Waters OF Southwestern Puerto Rico out 10 NM- 407 PM AST Thu Mar 15 2018 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM AST FRIDAY... * WINDS...East to southeast winds between 10 to 15 knots. * WAVES/SEAS...6 to 8 feet with occasional seas up to 10 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speed of 21 to 33 knots and/or seas of 7 feet or greater are expected to produce hazardous conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$
721 WHCA72 TJSJ 160107 MWWSJU URGENT - MARINE WEATHER MESSAGE National Weather Service San Juan PR 907 PM AST Thu Mar 15 2018 ...A long period northwest swell will result in hazardous seas until early Friday morning... AMZ710-712-715-741-742-745-160800- /O.EXT.TJSJ.SC.Y.0018.000000T0000Z-180316T0800Z/ Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- Coastal Waters of Northern USVI and Culebra out 10 NM- Mona Passage Southward to 17N- Coastal Waters OF Northwestern Puerto Rico out 10 NM- Coastal Waters OF Southwestern Puerto Rico out 10 NM- 907 PM AST Thu Mar 15 2018 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM AST FRIDAY... * WINDS...East to southeast winds between 10 to 15 knots. * WAVES/SEAS...5 to 7 feet with occasional seas up to 9 feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speed of 21 to 33 knots and/or seas of 7 feet or greater are expected to produce hazardous conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$
What forecasters said that day
The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS JSJ wrote its last area forecast discussion before this small craft advisory went out at Mar 13, 3:20 AM CDT, 4 minutes earlier.
Area forecast discussion, Mar 13, 3:20 AM CDT, 4 minutes before
Area Forecast Discussion
National Weather Service San Juan PR
420 AM AST Tue Mar 13 2018
.SYNOPSIS...Surface high pressure will continue to build across
the central Atlantic. This will maintain a southeasterly wind
flow across the region through the end of the week. An upper level
ridge will also continue to build and promote a drying trend and
fair weather conditions for the next several days. Normal to above
normal temperatures are expected to prevail through the work
week. A polar trough and associated surface front are forecast to
approach the region late during the weekend and early next week.
&&
.SHORT TERM...Today through Thursday...
High pressure at the surface will continue across the east central
sub-tropical Atlantic and will maintain southeast flow across the
area through Thursday morning of 10 to 20 knots in the lower layers.
Flow turns more easterly on Thursday when ridging pushes out of
Florida and connects with the high in the east central Atlantic.
Since this flow generally taps air with relatively low moisture the
only moisture plumes that can be initiated are those from local
convection in northwest Puerto Rico and a few streamers off the
Leeward islands. These will be limited to the warmest afternoon
hours, but may continue over the downstream waters during the
evening. Precipitable water during the period remains less than 1.1.
inches and reaches a nadir at 0.87 inches late on Thursday according
to the GFS. With winds out of the southeast, this means that the
south coast will generally have a little higher relative humidity
than usual and that the north coast will be warmer than normal where
some areas close to the ocean may reach 90 degrees. Thickness values
trend very slightly lower during the period. Although the GFS showed
a spike of warmth on Thursday, this may be an anomaly.
At upper levels, high pressure over Venezuela will move northeast
over their local waters and strengthen slightly. This will keep a
west southwest jet fragment over or just northwest of the local
area. Upper levels have very little divergent motion over the local
area during the period and are not particularly favorable to the
convection that could form over the northwest portion of Puerto
Rico, but the capping strongly present over the area yesterday
(Monday) will erode today and be nearly insignificant on Thursday,
creating a somewhat more favorable environment for showers absent
better moisture.
.LONG TERM...Friday through Wednesday...
Strong surface high pressure will hold across the central
Atlantic, well northeast of the region through the upcoming
weekend. An upper lever ridge is also expected to hold over the
region until early next week. These features will continue to
dominate the local weather pattern across the forecast area
through, resulting in an overall drying trend and stable airmass
across the local islands and surrounding waters. Therefore, a
fair weather pattern with mostly clear skies and limited shower
activity is expected to continue across the islands until late in
the weekend. However, patches of shallow low level moisture
embedded in the trades in combination with local and diurnal
effects may produce brief afternoon shower activity mainly over
parts of the central and northwestern portions of PR each day. The
broad surface high pressure will also continue to maintain a
moderate to fresh east to southeast wind flow through at least
Saturday. Therefore, temperatures are expected to continue
slightly above normal values, with highs reaching the high 80s to
near 90 degree each day, especially along the north coastal
sections.
A low pressure system will move across the Canadian Maritime
Provinces by Friday. Model guidance suggests that the associated
cold front is expected to stall to the north and west of the
region during the weekend. However, by early next week, the
remnants of the frontal boundary will move across the region,
resulting in an increase in moisture across the local islands.
&&
.AVIATION...VFR conditions to prevail at all TAF sites. Isold SHRA
and mtn obscurations psbl NW PR btwn 13/17-21Z. Some MVFR CIGS SE PR
13/14-18Z. Expect sfc winds SE 5 to 10 kt plus sea breeze influences
aft 13/14Z. Max winds WSW 50-68 kt btwn FL310-460 highest at
FL360.
&&
.MARINE...Seas will continue in the range of 4 to 6 feet today
and tonight, but are expected to increase to 5 to 7 feet across
the Atlantic waters on Wednesday. Winds will continue from the
southeast at 15-20 knots across most of the regional waters. A
moderate risk of rip currents is expected today across most of
the northern and southern beaches of the islands.
&&
.PRELIMINARY POINT TEMPS/POPS...
SJU 89 74 89 73 / 0 10 10 10
STT 84 76 84 74 / 10 10 10 10
&&
.SJU WATCHES/WARNINGS/ADVISORIES...
PR...VI...None.
AM...Small Craft Advisory from 6 AM Wednesday to 2 PM AST Thursday
for Atlantic Waters of Puerto Rico and USVI from 10 NM to
19.5N-Coastal Waters of Northern Puerto Rico out 10 NM.
&&
SHORT TERM...WS
LONG TERM....JFHazardous weather outlook, Mar 12, 4:41 AM CDT, 22 hours 43 minutes before
Perspectivas sobre Condiciones Peligrosas del Tiempo Servicio Nacional de Meteorologia San Juan PR 356 AM AST lunes 12 de marzo de 2018 AMZ710>745-PRZ001>013-130800- San Juan y Vecindad-Noreste-Sureste-Este Interior- Norte Central-Interior Central-Ponce y Vecindad- Noroeste-Oeste Interior-Mayaguez y Vecindad-Suroeste-Culebra-Vieques- Aguas cercanas y lejanas a la costa del Atlantico y Caribe- 356 AM AST lunes 12 de marzo de 2018 Esta perspectiva sobre las condiciones peligrosas del tiempo es para Puerto Rico y las aguas costeras adyacentes del Atlantico. .Dia Uno...Hoy y esta noche .Viento...Vientos sostenidos de sobre 20 MPH se anticipan a traves de las aguas costeras y suroeste de Puerto Rico. .Oleaje...Oleaje picado de hasta 7 pies con oleaje mas alto en ocasiones a traves de las aguas mar afuera del Atlantico y Caribe asi como los pasajes locales. Oleaje de 3 a 6 pies a traves del resto de las aguas regionales. .Corrientes Marinas...Existe un riesgo alto de corrientes marinas a traves de las playas del oeste y las playas del noroeste a noreste de Puerto Rico y Culebra. .Dias dos a siete...martes a domingo Oleaje peligroso continuara hasta por lo menos el martes y luego las condiciones estaran mejorando lentamente para mediados de la semana. Corrientes marinas amenazantes a vida persistiran hasta por lo menos el martes. .Comunicado sobre informacion reportada por observadores... No se anticipa activacion amplia de observadores, sin embargo, se le exhorta a los observadores que reporten corrientes marinas al Servicio Nacional de Meteorologia en San Juan. AMZ715-725-VIZ001-002-130800- San Tomas, San John e Islas Adyacentes- Santa Cruz-Aguas cercanas del Atlantico y aguas costeras adyacentes del Caribe- 356 AM AST lunes 12 de marzo de 2018 Esta perspectiva sobre las condiciones del tiempo peligrosas es para Puerto Rico y las aguas costeras adyacentes del Atlantico. .Dia Uno...Hoy y esta noche .Viento...Vientos sostenidos de sobre 20 MPH se anticipan a traves de las aguas costeras. .Oleaje...Condiciones picadas de hasta 7 pies a traves de las aguas mar afuera del Atlantico, Caribe y los pasajes locales. Oleaje de 5 a 6 pies a traves del resto de las aguas locales. .Corrientes Marinas...Existe un riesgo alto de corrientes marinas para San Thomas y Santa Cruz. .Dias dos a siete...martes a domingo Oleaje peligroso continuara hasta por lo menos el martes y luego las condiciones estaran mejorando lentamente para mediados de la semana. Corrientes marinas amenazantes a vida persistiran hasta por lo menos el martes. .Comunicado sobre informacion reportada por observadores... No se anticipa activacion amplia de observadores, sin embargo, se le exhorta a los observadores que reporten corrientes marinas al Servicio Nacional de Meteorologia en San Juan.
Nearby
Small Craft Advisories in Puerto Rico, 2018Every small craft advisory in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.