Alert archive / Puerto Rico / Small Craft Advisories in 2018

Small Craft Advisory 21, NWS JSJ

March 23, 2018

NWS JSJ issued this small craft advisory at Mar 23, 2018, 8:23 PM CDT. It took effect at Mar 24, 2018, 7:00 PM CDT. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Mar 23, 2018, 8:23 PM CDT (01:23 UTC)
In effect from
Mar 24, 2018, 7:00 PM CDT
Expired
Mar 25, 2018, 7:00 PM CDT
In force
24 hr
Issued by
NWS JSJ

The text

As transmitted.

208 
WHCA72 TJSJ 240123
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
923 PM AST Fri Mar 23 2018

...A northerly swell will result in hazardous seas Saturday night
into Sunday...

.A northerly swell is expected to move into the local waters this
weekend, causing the local offshore Atlantic waters to become
hazardous from Saturday night through Sunday evening.

AMZ710-240930-
/O.CAN.TJSJ.SC.Y.0020.000000T0000Z-180326T0100Z/
/O.NEW.TJSJ.SC.Y.0021.180325T0000Z-180326T0000Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
923 PM AST Fri Mar 23 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM SATURDAY TO 8 PM AST
SUNDAY...

The National Weather Service in San Juan has issued a Small Craft
Advisory, which is in effect from 8 PM Saturday to 8 PM AST
Sunday. 

* WINDS...15 to 20 knots

* WAVES/SEAS...5 to 7 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.

&&

$$
6 follow-up statements
029 
WHCA72 TJSJ 240835
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
435 AM AST Sat Mar 24 2018

...Hazardous seas are expected across the offshore Atlantic 
waters through the weekend...

.A northerly swell is expected to invade the local waters
later today to result in hazardous seas particularly across
the offshore Atlantic waters tonight and Sunday.

AMZ710-241645-
/O.CON.TJSJ.SC.Y.0021.180325T0000Z-180326T0000Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
435 AM AST Sat Mar 24 2018

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 8 PM AST SUNDAY...

* WINDS...northeasterly 15 to 20 knots.

* WAVES/SEAS... building 5 to 7 feet with occasional seas up to 9
  feet by tonight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 7 feet or greater are expected to produce hazardous 
wave conditions to small craft. Inexperienced mariners...especially
those operating smaller vessels should avoid navigating in these 
conditions.

&&

$$
473 
WHCA72 TJSJ 241333
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
933 AM AST Sat Mar 24 2018

...Hazardous seas are expected across the offshore Atlantic
waters through the weekend...

.A northerly swell is expected to invade the local waters later
today to result in hazardous seas particularly across the
offshore Atlantic waters tonight and Sunday.

AMZ710-242145-
/O.CON.TJSJ.SC.Y.0021.180325T0000Z-180326T0000Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
933 AM AST Sat Mar 24 2018

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 8 PM AST SUNDAY...

* WINDS...northeasterly 15 to 20 knots.

* WAVES/SEAS... building 5 to 7 feet with occasional seas up to 
  9 feet by tonight. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 7 feet or greater are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners...
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$
870 
WHCA72 TJSJ 242112
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
512 PM AST Sat Mar 24 2018

...Hazardous seas are expected across the offshore Atlantic
waters through the weekend...

.A northerly swell will move over the local waters this evening resulting
in hazardous seas across the offshore Atlantic waters tonight
through Sunday.

AMZ710-250515-
/O.EXT.TJSJ.SC.Y.0021.180325T0000Z-180326T0100Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
512 PM AST Sat Mar 24 2018

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING TO
9 PM AST SUNDAY...

* WINDS...Northeasterly 15 to 20 knots.

* WAVES/SEAS... Building 5 to 7 feet with occasional seas up to 9
  feet tonight. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 7 feet or greater are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners...
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$
572 
WHCA72 TJSJ 250053
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
853 PM AST Sat Mar 24 2018

...Hazardous seas are expected across the offshore Atlantic
waters through the rest of the weekend...

.A northerly swell invading the local waters will result in 
hazardous seas across the offshore Atlantic waters tonight through
Sunday evening.

AMZ710-250900-
/O.EXT.TJSJ.SC.Y.0021.000000T0000Z-180326T0000Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
853 PM AST Sat Mar 24 2018

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM AST SUNDAY...

* WINDS...Northeasterly 15 to 20 knots.

* WAVES/SEAS... Building 5 to 7 feet with occasional seas up to 
  9 feet tonight. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 7 feet or greater are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners...
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$
486 
WHCA72 TJSJ 250825
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
425 AM AST Sun Mar 25 2018

...Hazardous seas are expected across the offshore Atlantic
waters...

.A northerly swell will result in hazardous seas across the 
offshore Atlantic waters throughout the day but subsiding
tonight and Monday morning.

AMZ710-251630-
/O.CON.TJSJ.SC.Y.0021.000000T0000Z-180326T0000Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
425 AM AST Sun Mar 25 2018

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM AST THIS
EVENING...

* WINDS...Northeasterly 15 to 20 knots.

* WAVES/SEAS...Seas 5 to 7 feet with occasional seas up to 9 feet
  tonight. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 7 feet or greater are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners...
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$
501 
WHCA72 TJSJ 252045
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
445 PM AST Sun Mar 25 2018

...Hazardous seas are expected across the offshore Atlantic
waters...

.A northerly swell will result in hazardous seas across the
offshore Atlantic waters tonight, with waters subsiding on Monday
morning.

AMZ710-260000-
/O.CON.TJSJ.SC.Y.0021.000000T0000Z-180326T0000Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
445 PM AST Sun Mar 25 2018

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM AST THIS
EVENING...

* WINDS...Northeasterly 15 to 20 knots.

* WAVES/SEAS...Seas 5 to 7 feet with occasional seas up to 9 
  feet tonight. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 7 feet or greater are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners...
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

The office that day

Everything else NWS JSJ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 24, 3:20 AM CDTRip Current StatementJSJ71 hr
Mar 24, 7:39 AM CDTSpecial Marine WarningJSJ21 min
Mar 24, 10:28 AM CDTAreal Flood AdvisoryJSJ2 hr
Mar 24, 10:37 AM CDTAreal Flood AdvisoryJSJ113 min

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.