Alert archive / Puerto Rico / Small Craft Advisories in 2021

Small Craft Advisory 31, NWS JSJ

July 23, 2021

NWS JSJ issued this small craft advisory at Jul 23, 2021, 3:11 PM CDT. It took effect at Jul 24, 2021, 1:00 AM CDT. It was in force for 50 hr.

The area

The counties it named.

The facts

Issued
Jul 23, 2021, 3:11 PM CDT (20:11 UTC)
In effect from
Jul 24, 2021, 1:00 AM CDT
Expired
Jul 26, 2021, 2:39 AM CDT
In force
50 hr
Issued by
NWS JSJ

The text

As transmitted.

213 
WHCA72 TJSJ 232011
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
411 PM AST Fri Jul 23 2021

AMZ710-240415-
/O.NEW.TJSJ.SC.Y.0031.210724T0600Z-210725T1200Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
411 PM AST Fri Jul 23 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM SATURDAY TO 8 AM AST
SUNDAY...

* WHAT...Winds 15 to 20 knots with higher gusts and seas 5 to 7 
  feet expected.

* WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 
  19.5N.

* WHEN...From 2 AM Saturday to 8 AM AST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
10 follow-up statements
284 
WHCA72 TJSJ 240035
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
835 PM AST Fri Jul 23 2021

AMZ710-240845-
/O.CON.TJSJ.SC.Y.0031.210724T0600Z-210725T1200Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
835 PM AST Fri Jul 23 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM SATURDAY TO
8 AM AST SUNDAY...

* WHAT...Winds 15 to 20 knots with higher gusts and seas 5 to 7 
  feet expected.

* WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 
  19.5N.

* WHEN...From 2 AM Saturday to 8 AM AST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
116 
WHCA72 TJSJ 240747
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
347 AM AST Sat Jul 24 2021

AMZ710-241600-
/O.CON.TJSJ.SC.Y.0031.000000T0000Z-210725T1200Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
347 AM AST Sat Jul 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM AST SUNDAY...

* WHAT...Winds 15 to 20 knots with higher gusts and seas 5 to 7 
  feet expected.

* WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 
  19.5N.

* WHEN...From 2 AM Saturday to 8 AM AST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
144 
WHCA72 TJSJ 241401
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
1001 AM AST Sat Jul 24 2021

AMZ710-250200-
/O.CON.TJSJ.SC.Y.0031.000000T0000Z-210725T1200Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
1001 AM AST Sat Jul 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM AST SUNDAY...

* WHAT...Winds 15 to 20 knots with higher gusts and seas 5 to 7 
  feet expected.

* WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 
  19.5N.

* WHEN...Until 8 AM AST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
518 
WHCA72 TJSJ 242010
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
410 PM AST Sat Jul 24 2021

AMZ710-250415-
/O.CON.TJSJ.SC.Y.0031.000000T0000Z-210725T1200Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
410 PM AST Sat Jul 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM AST SUNDAY...

* WHAT...Winds 15 to 20 knots with higher gusts and seas 5 to 7 
  feet expected.

* WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 
  19.5N.

* WHEN...Until 8 AM AST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
106 
WHCA72 TJSJ 250056
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
856 PM AST Sat Jul 24 2021

AMZ710-250900-
/O.CON.TJSJ.SC.Y.0031.000000T0000Z-210725T1200Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
856 PM AST Sat Jul 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM AST SUNDAY...

* WHAT...Winds 15 to 20 knots with higher gusts and seas 5 to 7 
  feet expected.

* WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 
  19.5N.

* WHEN...Until 8 AM AST Sunday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
784 
WHCA72 TJSJ 250750
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
339 AM AST Sun Jul 25 2021

AMZ710-251545-
/O.EXT.TJSJ.SC.Y.0031.000000T0000Z-210726T1000Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
339 AM AST Sun Jul 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM AST MONDAY...

* WHAT...Winds 10 to 15 knots with higher gusts and seas 5 to 7 feet 
  expected.

* WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 
  19.5N.

* WHEN...Until 6 AM AST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
275 
WHCA72 TJSJ 251354
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
954 AM AST Sun Jul 25 2021

AMZ710-260200-
/O.CON.TJSJ.SC.Y.0031.000000T0000Z-210726T1000Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
954 AM AST Sun Jul 25 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM AST MONDAY...

* WHAT...Winds 10 to 15 knots with higher gusts and seas 5 to 7 
  feet expected.

* WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 
  19.5N.

* WHEN...Until 6 AM AST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
408 
WHCA72 TJSJ 252002
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
402 PM AST Sun Jul 25 2021

AMZ710-260800-
/O.EXT.TJSJ.SC.Y.0031.000000T0000Z-210726T1200Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
402 PM AST Sun Jul 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 AM AST MONDAY...

* WHAT...Winds 10 to 15 knots with higher gusts and seas 5 to 7 
  feet expected.

* WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 
  19.5N.

* WHEN...Until 8 AM AST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
891 
WHCA72 TJSJ 260117
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
917 PM AST Sun Jul 25 2021

AMZ710-261000-
/O.CON.TJSJ.SC.Y.0031.000000T0000Z-210726T1200Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
917 PM AST Sun Jul 25 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM AST MONDAY...

* WHAT...Winds 10 to 15 knots with higher gusts and seas 5 to 7 
  feet expected.

* WHERE...Atlantic Waters of Puerto Rico and USVI from 10 NM to 
  19.5N.

* WHEN...Until 8 AM AST Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
760 
WHCA72 TJSJ 260739
MWWSJU

URGENT - MARINE WEATHER MESSAGE
National Weather Service San Juan PR
339 AM AST Mon Jul 26 2021

AMZ710-260845-
/O.CAN.TJSJ.SC.Y.0031.000000T0000Z-210726T1200Z/
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
339 AM AST Mon Jul 26 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

Latest buoy observations indicate that seas have diminished to
below advisory criteria, however, small craft operators should
continue to exercise caution.

$$

The office that day

Everything else NWS JSJ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 23, 12:23 PM CDTSpecial Weather StatementJSJ52 min
Jul 23, 12:45 PM CDTAreal Flood AdvisoryJSJ2 hr

Nearby

Small Craft Advisories in Puerto Rico, 2021Every small craft advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.