Alert archive / Northern Mariana Islands / Rip Current Statements in 2023

Rip Current Statement 2, NWS Guam

January 9, 2023

NWS Guam issued this rip current statement at Jan 9, 2023, 1:47 AM CST. It took effect at Jan 10, 2023, 2:00 PM CST. It was in force for 5 days.

The area

The counties it named.

The facts

Issued
Jan 9, 2023, 1:47 AM CST (07:47 UTC)
In effect from
Jan 10, 2023, 2:00 PM CST
Expired
Jan 15, 2023, 12:00 PM CST
In force
5 days
Issued by
NWS Guam

The text

As transmitted.

976 
WHMY40 PGUM 090747
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
547 PM ChST Mon Jan 9 2023

GUZ001-MPZ001>003-092200-
/O.NEW.PGUM.SU.Y.0003.230111T2000Z-230115T0800Z/
/O.NEW.PGUM.RP.S.0002.230111T2000Z-230115T0800Z/
/O.CON.PGUM.SU.Y.0002.000000T0000Z-230109T2000Z/
/O.CON.PGUM.RP.S.0001.000000T0000Z-230109T2000Z/
Guam-Rota-Tinian-Saipan-
547 PM ChST Mon Jan 9 2023

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 AM TUESDAY...

...HIGH RISK OF RIP CURRENTS REMAINS THROUGH UNTIL 6 AM TUESDAY... 

...HIGH SURF ADVISORY IN EFFECT FROM EARLY THURSDAY MORNING TO SUNDAY
AFTERNOON... 

...HIGH RISK OF RIP CURRENTS FROM EARLY THURSDAY MORNING TO SUNDAY 
AFTERNOON... 

* WHAT...For the first High Surf Advisory and High Rip Current Risk,
  hazardous surf of 7 to 9 feet in the surf zone and dangerous rip
  currents expected. For the second High Surf Advisory and High Rip
  Current Risk, large breaking waves of 10 to 14 feet in the surf zone
  and dangerous rip currents expected.

* WHERE...North facing reefs of the Marianas.

* WHEN...For the first High Surf Advisory and High Rip Current Risk,
  until 6 AM Tuesday. For the second High Surf Advisory and High Rip
  Current Risk, from early Thursday morning to Sunday afternoon.

* IMPACTS...Dangerous swimming and surfing conditions and localized 
  beach erosion. Rip currents can sweep even the best swimmers away 
  from shore into deeper water.

* ADDITIONAL DETAILS...The re-descent of a newly-energized shearline
  induced by a strong high moving in from the Yellow Sea across the
  northern Pacific will bring an exceptional north swell, introducing
  hazardous surf to north facing reefs of the Marianas. Surf may
  occasionally reach dangerous levels by Saturday, and as such, a
  High Surf Warning may be considered if conditions warrant.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to dangerous
surf conditions.

If caught in a rip current, relax and float. Don't swim against the 
current. If able, swim in a direction following the shoreline. If 
unable to escape, face the shore and call or wave for help.

&&

$$

Pavliukoit
14 follow-up statements
752 
WHMY40 PGUM 092004
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
604 AM ChST Tue Jan 10 2023

GUZ001-MPZ001>003-101015-
/O.EXP.PGUM.SU.Y.0002.000000T0000Z-230109T2000Z/
/O.EXP.PGUM.RP.S.0001.000000T0000Z-230109T2000Z/
/O.CON.PGUM.SU.Y.0003.230111T2000Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.230111T2000Z-230115T0800Z/
Guam-Rota-Tinian-Saipan-
604 AM ChST Tue Jan 10 2023

...HIGH SURF ADVISORY WILL EXPIRE AT 6 AM CHST EARLY THIS MORNING...
...HIGH RIP CURRENT RISK WILL EXPIRE AT 6 AM CHST EARLY THIS MORNING...
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 6 AM THURSDAY TO 6 PM CHST
SUNDAY ALONG NORTH FACING REEFS...
...HIGH RISK OF RIP CURRENTS FROM THURSDAY MORNING THROUGH SUNDAY
AFTERNOON ALONG NORTH FACING REEFS...

* WHAT...For the High Surf Advisory, surf has currently diminished
  below advisory criteria, so the advisory is being allowed to expire.
  However, around Thursday, it will build back to between 9 and 13
  feet along north facing reefs. For the High Rip Current Risk,
  dangerous rip currents expected.

* WHERE...North facing reefs of the Marianas.

* WHEN...For the first High Surf Advisory and High Rip Current 
  Risk, until 6 AM Tuesday. For the second High Surf Advisory 
  and High Rip Current Risk, from early Thursday morning to 
  Sunday afternoon.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

Stanko
603 
WHMY40 PGUM 100654
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
454 PM ChST Tue Jan 10 2023

GUZ001-MPZ001>003-102200-
/O.CON.PGUM.SU.Y.0003.230111T2000Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.230111T2000Z-230115T0800Z/
Guam-Rota-Tinian-Saipan-
454 PM ChST Tue Jan 10 2023

...HIGH SURF ADVISORY REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH 
SUNDAY AFTERNOON... 
...HIGH RISK OF RIP CURRENTS FROM THURSDAY MORNING THROUGH SUNDAY 
AFTERNOON...

* WHAT...Large breaking waves of 9 to 13 feet and dangerous rip
  currents expected in the surf zone.

* WHERE...North facing reefs of the Marianas.

* WHEN...From 6 AM Thursday to 6 PM Sunday.

* IMPACTS...Dangerous swimming and surfing conditions and localized 
  beach erosion. Rip currents can sweep even the best swimmers away 
  from shore into deeper water.

* ADDITIONAL DETAILS...The re-descent of a newly-energized shearline
  induced by a strong high moving in from the Yellow Sea across the
  northern Pacific will bring an exceptional north swell, introducing
  hazardous surf to north facing reefs of the Marianas starting
  Thursday. Surf may occasionally reach dangerous levels by Saturday,
  and as such, a High Surf Warning may be considered if conditions 
  warrant.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to dangerous
surf conditions.

If caught in a rip current, relax and float. Don't swim against the 
current. If able, swim in a direction following the shoreline. If 
unable to escape, face the shore and call or wave for help.

&&

$$

Pavliukoit
503 
WHMY40 PGUM 101810
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
410 AM ChST Wed Jan 11 2023

MPZ002-003-110900-
/O.EXT.PGUM.SU.Y.0003.230110T2000Z-230115T0800Z/
/O.EXT.PGUM.RP.S.0002.230110T2000Z-230115T0800Z/
Tinian-Saipan-
410 AM ChST Wed Jan 11 2023

...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM CHST SUNDAY ALONG 
NORTH FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON ALONG NORTH
FACING REEFS...

* WHAT...Large breaking waves and dangerous rip currents.

* WHERE...Tinian and Saipan.

* WHEN...Through 6 PM ChST Sunday.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...A high rip risk will likely spread to east 
  facing reefs Thursday or Friday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to dangerous 
surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and float. 
Don't swim against the current. If able, swim in a direction following 
the shoreline. If unable to escape, face the shore and call or wave 
for help.

&&

$$

GUZ001-MPZ001-110900-
/O.EXT.PGUM.SU.Y.0003.230112T0800Z-230115T0800Z/
/O.EXT.PGUM.RP.S.0002.230112T0800Z-230115T0800Z/
Guam-Rota-
410 AM ChST Wed Jan 11 2023

...HIGH SURF ADVISORY IN EFFECT FROM 6 PM THURSDAY TO 6 PM SUNDAY
ALONG NORTH FACING REEFS...
...HIGH RISK OF RIP CURRENTS FROM THURSDAY EVENING THROUGH SUNDAY 
AFTERNOON ALONG NORTH AND EAST FACING REEFS...

* WHAT...Large breaking waves and dangerous rip currents. 

* WHERE...Guam and Rota.

* WHEN...Thursday evening through Sunday afternoon.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to dangerous 
surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and float. 
Don't swim against the current. If able, swim in a direction following 
the shoreline. If unable to escape, face the shore and call or wave 
for help.

&&

$$
359 
WHMY40 PGUM 101923 AAA
CFWGUM

Coastal Hazard Message...UPDATED
National Weather Service Tiyan GU
523 AM ChST Wed Jan 11 2023

GUZ001-MPZ001-110900-
/O.EXT.PGUM.SU.Y.0003.230111T2000Z-230115T0800Z/
/O.EXT.PGUM.RP.S.0002.230111T2000Z-230115T0800Z/
Guam-Rota-
523 AM ChST Wed Jan 11 2023

...HIGH SURF ADVISORY NOW IN EFFECT FROM 6 AM THURSDAY TO 6 PM SUNDAY 
ALONG NORTH FACING REEFS...
...HIGH RISK OF RIP CURRENTS FROM THURSDAY MORNING THROUGH SUNDAY 
AFTERNOON ALONG NORTH FACING REEFS...

* WHAT...Large breaking waves and dangerous rip currents. 

* WHERE...Guam and Rota.

* WHEN...Thursday through Sunday afternoon.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...A high rip risk will likely spread to east 
  facing reefs late Thursday or Friday

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to dangerous 
surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and float. 
Don't swim against the current. If able, swim in a direction following 
the shoreline. If unable to escape, face the shore and call or wave 
for help.

&&

$$

MPZ002-003-110900-
/O.CON.PGUM.SU.Y.0003.230110T2000Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.230110T2000Z-230115T0800Z/
Tinian-Saipan-
523 AM ChST Wed Jan 11 2023

...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM CHST SUNDAY ALONG 
NORTH FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON ALONG NORTH
FACING REEFS...

* WHAT...Large breaking waves and dangerous rip currents.

* WHERE...Tinian and Saipan.

* WHEN...Through 6 PM Sunday.

* IMPACTS...Dangerous swimming and surfing conditions and localized 
  beach erosion. Rip currents can sweep even the best swimmers away 
  from shore into deeper water.

* ADDITIONAL DETAILS...A high rip risk will likely spread to east 
  facing reefs Thursday or Friday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to dangerous 
surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and float. 
Don't swim against the current. If able, swim in a direction following 
the shoreline. If unable to escape, face the shore and call or wave 
for help.

&&

$$

BPB
144 
WHMY40 PGUM 110708
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
508 PM ChST Wed Jan 11 2023

MPZ002-003-112200-
/O.CON.PGUM.SU.Y.0003.000000T0000Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Tinian-Saipan-
508 PM ChST Wed Jan 11 2023

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM CHST SUNDAY 
ALONG NORTH FACING REEFS... 
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON ALONG NORTH
FACING REEFS...

* WHAT...Large breaking waves and dangerous rip currents.

* WHERE...Tinian and Saipan.

* WHEN...Through 6 PM Sunday.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...A high rip risk will likely spread to east 
  facing reefs late Thursday or Friday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

GUZ001-MPZ001-112200-
/O.CON.PGUM.SU.Y.0003.230111T2000Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.230111T2000Z-230115T0800Z/
Guam-Rota-
508 PM ChST Wed Jan 11 2023

...HIGH SURF ADVISORY IN EFFECT FROM 6 AM THURSDAY TO 6 PM CHST 
SUNDAY ALONG NORTH FACING REEFS... 
...HIGH RISK OF RIP CURRENTS FROM THURSDAY MORNING THROUGH SUNDAY
AFTERNOON ALONG NORTH FACING REEFS...

* WHAT...Large breaking waves and dangerous rip currents.

* WHERE...Guam and Rota.

* WHEN...Thursday through 6 PM Sunday.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...A high rip risk will likely spread to east 
  facing reefs late Thursday or Friday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

IC
139 
WHMY40 PGUM 111802
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
402 AM ChST Thu Jan 12 2023

MPZ002-003-120800-
/O.CON.PGUM.SU.Y.0003.000000T0000Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Tinian-Saipan-
402 AM ChST Thu Jan 12 2023

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM SUNDAY ALONG NORTH
AND EAST FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON ALONG NORTH AND
EAST FACING REEFS...

* WHAT...Large breaking waves and dangerous rip currents.

* WHERE...Tinian and Saipan.

* WHEN...Through at least 6 PM Sunday.

* IMPACTS...Dangerous swimming and surfing conditions and localized 
  beach erosion. Rip currents can sweep even the best swimmers away 
  from shore into deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to dangerous 
surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and float. 
Don't swim against the current. If able, swim in a direction following 
the shoreline. If unable to escape, face the shore and call or wave 
for help.

&&

$$

GUZ001-MPZ001-120800-
/O.CON.PGUM.SU.Y.0003.230111T2000Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.230111T2000Z-230115T0800Z/
Guam-Rota-
402 AM ChST Thu Jan 12 2023

...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM SUNDAY ALONG NORTH FACING 
REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON ALONG NORTH AND
EAST FACING REEFS...

* WHAT...Large breaking waves and dangerous rip currents.

* WHERE...Guam and Rota.

* WHEN...Until at least 6 PM Sunday.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...Surf will build further along east facing 
  reefs on Friday. The High Surf Advisory may be extended to east 
  facing reefs. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

BPB
149 
WHMY40 PGUM 120548
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
348 PM ChST Thu Jan 12 2023

MPZ002-003-122000-
/O.NEW.PGUM.SU.W.0001.230112T0800Z-230114T0800Z/
/O.NEW.PGUM.SU.Y.0004.230114T0800Z-230115T0800Z/
/O.EXT.PGUM.SU.Y.0003.000000T0000Z-230112T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Tinian-Saipan-
348 PM ChST Thu Jan 12 2023

...HIGH SURF WARNING NOW IN EFFECT UNTIL 6 PM SATURDAY ALONG NORTH
AND EAST FACING REEFS...
...HIGH SURF ADVISORY IN EFFECT FROM 6 PM SATURDAY TO 6 PM SUNDAY
ALONG NORTH AND EAST FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON ALONG NORTH 
AND EAST FACING REEFS...

* WHAT...Dangerously large breaking waves of 11 to 16 feet and
  dangerous rip currents expected along north and east facing reefs.
 
* WHERE...North- and east-facing reefs Tinian and Saipan.

* WHEN...For the High Surf Warning, until 6 PM ChST Saturday. For 
  the High Surf Advisory, from 6 PM Saturday to 6 PM ChST Sunday. For
  the High Rip Current Risk, through Sunday afternoon.

* IMPACTS...Breaking waves can sweep people off jetties and 
  docks, and into dangerous seas. Life-threatening swimming 
  conditions and significant beach erosion can be expected. Rip 
  currents can sweep even the best swimmers away from shore into 
  deeper water.

* ADDITIONAL DETAILS...Tanapag buoy indicates an average wave heights
  between 10 and 14 feet, with max wave heights exeeding 20 feet at
  times. Model guidance indicated north-northeast swell building up
  to 14 feet at 10 seconds, meeting criteria for a High Surf Warning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

GUZ001-MPZ001-122000-
/O.CON.PGUM.SU.Y.0003.000000T0000Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Guam-Rota-
348 PM ChST Thu Jan 12 2023

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM SUNDAY ALONG 
NORTH FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON...

* WHAT...Large breaking waves and dangerous rip currents.

* WHERE...For the High Surf Advisory, north-facing reefs Guam and
  Rota. For the High Rip Current Risk, north- and east-facing reefs 
  of Guam and Rota.
 
* WHEN...Until 6 PM ChST Sunday.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...Surf is expected to build further along east 
  facing reefs on Friday. The High Surf Advisory may be extended to 
  east facing reefs. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$
956 
WHMY40 PGUM 121955
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
555 AM ChST Fri Jan 13 2023

GUZ001-MPZ001-131000-
/O.UPG.PGUM.SU.Y.0003.000000T0000Z-230115T0800Z/
/O.EXB.PGUM.SU.W.0001.000000T0000Z-230113T2000Z/
/O.EXB.PGUM.SU.Y.0004.230113T2000Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Guam-Rota-
555 AM ChST Fri Jan 13 2023

...HIGH SURF WARNING IN EFFECT UNTIL 6 AM CHST SATURDAY ALONG NORTH
FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON ALONG NORTH AND
EAST FACING REEFS...
...HIGH SURF ADVISORY IN EFFECT FROM 6 AM SATURDAY TO 6 PM CHST SUNDAY
ALONG NORTH AND EAST FACING REEFS...

* WHAT...Large breaking waves and dangerous rip currents.

* WHERE...Guam and Rota.

* WHEN...For the High Surf Warning, until 6 AM ChST Saturday. 
  For the High Surf Advisory, from 6 AM Saturday to 6 PM ChST 
  Sunday. For the High Rip Current Risk, through Sunday 
  afternoon.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...Ritidian buoy recently spiked up to 13 feet.
  The advisory will likely be extended to east facing reefs when the
  warning expires.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

MPZ002-003-131000-
/O.CON.PGUM.SU.W.0001.000000T0000Z-230114T0800Z/
/O.CON.PGUM.SU.Y.0004.230114T0800Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Tinian-Saipan-
555 AM ChST Fri Jan 13 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM CHST SATURDAY...
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY
AFTERNOON...
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 6 PM SATURDAY TO
6 PM CHST SUNDAY...

* WHAT...Dangerously large breaking waves of 11 to 16 feet and 
  dangerous rip currents expected along north and east facing 
  reefs.

* WHERE...North- and east-facing reefs Tinian and Saipan.

* WHEN...For the High Surf Warning, until 6 PM ChST Saturday. 
  For the High Surf Advisory, from 6 PM Saturday to 6 PM ChST 
  Sunday. For the High Rip Current Risk, through Sunday 
  afternoon.

* IMPACTS...Breaking waves can sweep people off jetties and 
  docks, and into dangerous seas. Life-threatening swimming 
  conditions and significant beach erosion can be expected. Rip 
  currents can sweep even the best swimmers away from shore into 
  deeper water.

* ADDITIONAL DETAILS...Tanapag buoy indicates an average wave 
  heights between 12 and 17 feet, with max wave heights approaching 
  30 feet at times. Model guidance indicated north-northeast 
  swell building up to 14 feet at 10 seconds, meeting criteria 
  for a High Surf Warning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

Stanko
821 
WHMY40 PGUM 130718
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
518 PM ChST Fri Jan 13 2023

GUZ001-MPZ001-132200-
/O.EXT.PGUM.SU.W.0001.000000T0000Z-230114T0800Z/
/O.EXT.PGUM.SU.Y.0004.230114T0800Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Guam-Rota-
518 PM ChST Fri Jan 13 2023

...HIGH SURF WARNING IN EFFECT UNTIL 6 PM SATURDAY... 
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON... 
...HIGH SURF ADVISORY IN EFFECT FROM 6 PM SATURDAY TO 6 PM SUNDAY...

* WHAT...Dangerously large breaking waves of 11 to 15 feet and 
  dangerous rip currents expected along north and east facing reefs.

* WHERE...For High Surf Warning, north-facing reefs of Guam and Rota.
  For the High Surf Advisory and the High Rip Current Risk, north- 
  and east-facing reefs of Guam and Rota. 

* WHEN...For the High Surf Warning, until 6 PM ChST Saturday. 
  For the High Surf Advisory, from 6 PM Saturday to 6 PM ChST 
  Sunday. For the High Rip Current Risk, through Sunday 
  afternoon.

* IMPACTS...Breaking waves can sweep people off jetties and 
  docks, and into dangerous seas. Life-threatening swimming 
  conditions and significant beach erosion can be expected. Rip 
  currents can sweep even the best swimmers away from shore into 
  deeper water.

* ADDITIONAL DETAILS...Ritidian buoy measured 11 to 15 feet today and
  model projections expect a similar trend tomorrow as well. Swell is
  expected to turn more from the east and gradually subside Saturday
  afternoon into evening, downgrading to an advisory and be extended
  to east-facing reefs when the warning expires.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

MPZ002-003-132200-
/O.CON.PGUM.SU.W.0001.000000T0000Z-230114T0800Z/
/O.CON.PGUM.SU.Y.0004.230114T0800Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Tinian-Saipan-
518 PM ChST Fri Jan 13 2023

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM CHST SATURDAY...
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON... 
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 6 PM SATURDAY TO 6 PM 
SUNDAY...

* WHAT...Dangerously large breaking waves of 12 to 16 feet and
  dangerous rip currents expected along north and east facing reefs.

* WHERE...For the High Surf Warning, along north-facing reefs Tinian
  and Saipan. For the High Surf Advisory and the High Rip Current 
  Risk, north- and east-facing reefs.

* WHEN...For the High Surf Warning, until 6 PM ChST Saturday. 
  For the High Surf Advisory, from 6 PM Saturday to 6 PM ChST 
  Sunday. For the High Rip Current Risk, through Sunday 
  afternoon.

* IMPACTS...Breaking waves can sweep people off jetties and 
  docks, and into dangerous seas. Life-threatening swimming 
  conditions and significant beach erosion can be expected. Rip 
  currents can sweep even the best swimmers away from shore into 
  deeper water.

* ADDITIONAL DETAILS...Tinian and Saipan will continue to incur the
  biggest impact from the large northeast swell. Tanapag buoy
  reported maximum wave heights of 20 to 30 feet. Swell is expected
  to turn more from the east and gradually subside Saturday afternoon
  into evening, downgrading to an advisory and be extended to east-
  facing reefs when the warning expires.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$
792 
WHMY40 PGUM 131824
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
424 AM ChST Sat Jan 14 2023

GUZ001-MPZ001>003-140830-
/O.CON.PGUM.SU.W.0001.000000T0000Z-230114T0800Z/
/O.CON.PGUM.SU.Y.0004.230114T0800Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Guam-Rota-Tinian-Saipan-
424 AM ChST Sat Jan 14 2023

...HIGH SURF WARNING IN EFFECT UNTIL 6 PM CHST THIS EVENING ALONG
NORTH FACING REEFS... 

...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON ALONG
NORTH AND EAST FACING REEFS...

...HIGH SURF ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
CHST SUNDAY ALONG NORTH AND EAST FACING REEFS... 

* WHAT...Dangerously large breaking waves of 11 to 15 feet and 
  dangerous rip currents expected along north and east facing 
  reefs.

* WHERE...Guam, Rota, Tinian and Saipan Counties.

* WHEN...For the High Surf Warning, until 6 PM ChST Saturday. 
  For the High Surf Advisory, from 6 PM Saturday to 6 PM ChST 
  Sunday. For the High Rip Current Risk, through Sunday 
  afternoon.

* IMPACTS...Breaking waves can sweep people off jetties and 
  docks, and into dangerous seas. Life-threatening swimming 
  conditions and significant beach erosion can be expected. Rip 
  currents can sweep even the best swimmers away from shore into 
  deeper water.

* ADDITIONAL DETAILS...Ritidian buoy measured 11 to 15 feet 
  today and model projections expect a similar trend tomorrow as 
  well. Swell is expected to turn more from the east and 
  gradually subside Saturday afternoon into evening, downgrading 
  to an advisory and be extended to east-facing reefs when the 
  warning expires.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Everyone should remain out of the water due to life-threatening
surf conditions. Stay off of jetties, piers, and other waterside
infrastructure.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

Doll
049 
WHMY40 PGUM 140624
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
424 PM ChST Sat Jan 14 2023

GUZ001-MPZ001>003-142000-
/O.CAN.PGUM.SU.W.0001.000000T0000Z-230114T0800Z/
/O.EXT.PGUM.SU.Y.0004.230114T0624Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Guam-Rota-Tinian-Saipan-
424 PM ChST Sat Jan 14 2023

...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 6 PM CHST SUNDAY...
...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON...
...HIGH SURF WARNING IS CANCELLED...

* WHAT...Large breaking waves of 9 to 13 feet in the surf zone and 
  dangerous rip currents.

* WHERE...North and east facing reefs of the Marianas.

* WHEN...Until 6 PM ChST Sunday. 

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...Surf has subsided to below dangerous levels
  but will remain hazardous through Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

Bowsher/Kleeschulte
933 
WHMY40 PGUM 142016
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
616 AM ChST Sun Jan 15 2023

GUZ001-MPZ001>003-150800-
/O.CON.PGUM.SU.Y.0004.000000T0000Z-230115T0800Z/
/O.CON.PGUM.RP.S.0002.000000T0000Z-230115T0800Z/
Guam-Rota-Tinian-Saipan-
616 AM ChST Sun Jan 15 2023

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM THIS EVENING...
...HIGH RISK OF RIP CURRENTS THROUGH THIS AFTERNOON...

* WHAT...Large breaking waves of 8 to 12 feet in the surf zone 
  and dangerous rip currents.

* WHERE...North and east facing reefs of the Marianas.

* WHEN...Until 6 PM ChST Sunday.

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...Surf has subsided to below dangerous 
  levels but will remain hazardous today.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

Stanko
606 
WHMY40 PGUM 150545
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
345 PM ChST Sun Jan 15 2023

GUZ001-MPZ001>003-151800-
/O.EXT.PGUM.SU.Y.0004.000000T0000Z-230115T1800Z/
/O.EXT.PGUM.RP.S.0002.000000T0000Z-230115T1800Z/
Guam-Rota-Tinian-Saipan-
345 PM ChST Sun Jan 15 2023

...HIGH SURF ADVISORY FOR EAST FACING REEFS NOW IN EFFECT UNTIL 
4 AM CHST MONDAY...
...HIGH RISK OF RIP CURRENTS THROUGH LATE TONIGHT FOR EAST FACING
REEFS...

* WHAT...Large breaking waves of 8 to 12 feet in the surf zone 
  and dangerous rip currents.

* WHERE...East facing reefs of the Marianas.

* WHEN...For the High Surf Advisory, until 4 AM ChST Monday. 

* IMPACTS...Dangerous swimming and surfing conditions and 
  localized beach erosion. Rip currents can sweep even the best 
  swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...Surf has subsided to below dangerous levels
  for the north facing reefs, but will remain hazardous for the
  east facing reefs. This concern for the eastern shores should
  subside shortly before sunrise Monday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

Doll
059 
WHMY40 PGUM 151810
CFWGUM

Coastal Hazard Message
National Weather Service Tiyan GU
410 AM ChST Mon Jan 16 2023

GUZ001-MPZ001>003-151915-
/O.EXP.PGUM.SU.Y.0004.000000T0000Z-230115T1800Z/
/O.EXP.PGUM.RP.S.0002.000000T0000Z-230115T1800Z/
Guam-Rota-Tinian-Saipan-
410 AM ChST Mon Jan 16 2023

...HIGH SURF ADVISORY HAS EXPIRED...
...HIGH RIP CURRENT RISK HAS EXPIRED...

Surf has diminished below 9 feet along all reefs of the Marianas.

$$

The office that day

Everything else NWS Guam issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 9, 1:41 AM CSTSpecial Marine WarningGUM34 min
Jan 9, 1:47 AM CSTHigh Surf AdvisoryGUM4 days
Jan 9, 2:17 AM CSTSpecial Marine WarningGUM28 min
Jan 9, 4:33 PM CSTSmall Craft AdvisoryGUM21 hr
Jan 8, 11:51 PM CSTAreal Flood AdvisoryGUM54 min
Jan 9, 12:12 AM CSTFlash Flood WarningGUM63 min
Jan 9, 12:13 AM CSTAreal Flood AdvisoryGUM2 hr
Jan 9, 1:01 AM CSTFlash Flood WarningGUM42 min
Jan 9, 2:27 AM CSTAreal Flood AdvisoryGUM2 hr
Jan 9, 7:08 AM CSTAreal Flood AdvisoryGUM112 min

Nearby

Rip Current Statements in Northern Mariana Islands, 2023Rip Current Statements in Guam, 2023Every rip current statement in 2023

Sources

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