638 

WHMY40 PGUM 160512

CFWGUM



URGENT - IMMEDIATE BROADCAST REQUESTED

Coastal Hazard Message

National Weather Service Tiyan GU

312 PM ChST Fri Oct 16 2026



GUZ001-MPZ001>003-161300-

/O.NEW.PGUM.SU.W.0009.261017T0700Z-261018T1800Z/

/O.NEW.PGUM.CF.A.0006.261017T0700Z-261018T1800Z/

Guam-Rota-Tinian-Saipan-

312 PM ChST Fri Oct 16 2026



...HIGH SURF WARNING IN EFFECT FROM 5 PM SATURDAY TO 4 AM CHST

MONDAY...

...COASTAL FLOOD WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH

LATE SUNDAY NIGHT...



* WHAT...For the High Surf Warning, dangerously large breaking waves

  of 7 to 9 feet Saturday afternoon, building to as high as 26 feet

  for Guam, 20 feet for Rota and 19 feet for Tinian and Saipan. For

  the Coastal Flood Watch, significant coastal flooding possible.



* WHERE...For the High Surf Warning, initially east facing reefs of

  Guam, Rota, Tinian and Saipan; spreading to south facing reefs

  through Sunday afternoon. For the Coastal Flood Watch, all reefs 

  of the Marianas.



* WHEN...For the High Surf Warning, from 5 PM Saturday to 4 AM

  ChST Monday. For the Coastal Flood Watch, from Saturday afternoon

  through late Sunday night.



* IMPACTS...Numerous roads may be closed. Low lying property

  including homes, businesses, and some critical infrastructure may

  be inundated. Some shoreline erosion may occur. Breaking waves can

  sweep people off jetties and docks, and into dangerous seas. Life-

  threatening swimming conditions and significant beach erosion can

  be expected. Coastal inundation of up to 5 feet for Guam, 2 to 4

  feet for Rota and 1 to 3 feet for Tinian and Saipan is possible. 

  Coastal flooding and beach erosion is possible.



* ADDITIONAL DETAILS...As TS Champi approaches the Marianas, surf

  conditions are expected to deteriorate rapidly, with surf reaching

  9 feet Saturday afternoon, building to dangerous/deadly levels

  through Saturday night.  



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.



&&



$$



Kleeschulte






596 

WHUS44 KCRP 160512

CFWCRP



Coastal Hazard Message

National Weather Service Corpus Christi TX

1212 AM CDT Fri Oct 16 2026



TXZ345-442-443-447-162100-

/O.CON.KCRP.CF.Y.0022.261016T2100Z-261018T1200Z/

Aransas Islands-Kleberg Islands-Nueces Islands-Calhoun Islands-

1212 AM CDT Fri Oct 16 2026



...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 4 PM THIS

AFTERNOON TO 7 AM CDT SUNDAY...



* WHAT...Minor coastal flooding expected.



* WHERE...Aransas Islands, Kleberg Islands, Nueces Islands and 

  Calhoun Islands Counties.



* WHEN...From 4 PM Friday to 7 AM CDT Sunday.



* IMPACTS...Flooding of lots, parks, and roads with only 

  isolated road closures expected.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



If travel is required, allow extra time as some roads may be

closed. Do not drive around barricades or through water of

unknown depth. Take the necessary actions to protect flood-prone

property.



&&



$$



TE