JilindeEmergency Rescue and Alerting Platform Get the App
Live map / News & alerts / Guam Coastal Waters ← Back to live map
🏛 Official alert Special Marine Warning Weather & disasters Serious

Special Marine Warning

N Issued by NWS Tiyan GU ⏳ In force until Sat 17 Oct, 04:45 📍 Guam Coastal Waters (approximate) 🕑 2 h ago
🌐 Translate: ·

SMWGUM THE NATIONAL WEATHER SERVICE IN TIYAN HAS ISSUED A * SPECIAL MARINE WARNING FOR... SOUTHEASTERN GUAM COASTAL WATERS... * UNTIL 1145 AM CHST. * AT 1121 AM CHST, A SEVERE THUNDERSTORM PRODUCING WATERSPOUTS WAS LOCATED 33 NM SOUTHEAST OF IPAN BUOY, MOVING SOUTH AT 30 KNOTS. HAZARD...WATERSPOUTS. SOURCE...RADAR INDICATED. IMPACT...WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE LOCALLY HAZARD…

🗃 Archived report - it is no longer on the live map. Pages are kept for 30 days.

📡 CAP alert details

Common Alerting Protocol
Official alert linked ▾
⚠
SeveritySevere
⏱
UrgencyImmediate
❓
CertaintyLikely
EventSpecial Marine Warning
Response typeAvoid
CategoryMet
Affected areaGuam Coastal Waters
Issuing authorityNWS Tiyan GU
ContactNot supplied

🕓 Alert timing · EAT

Sent2026-10-17T11:21:00+10:00
Effective2026-10-17T11:21:00+10:00
Onset2026-10-17T11:21:00+10:00
Expires2026-10-17T11:45:00+10:00

📋 Official instructions

MOVE TO SAFE HARBOR UNTIL HAZARDOUS WEATHER PASSES.

📄 Message details

Alert identifierurn:oid:2.49.0.1.840.0.6ffca5e345070f4c69a4f4b1396149543ae37fa2.001.1
Message typeAlert
Senderw-nws.webmaster@noaa.gov
ScopePublic
CAP statusActual
Related messagesNot supplied
ⓘ CAP fields populate when an official alert is linked.

🛡 Safety advice

General guidance for this type of incident - not official instructions.
  • MOVE TO SAFE HARBOR UNTIL HAZARDOUS WEATHER PASSES.
  • Stay aware of your surroundings in this area.
  • Follow official updates from the police and local authorities.
  • In an emergency call 112 (police) or 112 (ambulance), or request help through Jilinde.

📰 Story summary

From the report shown in the feed:
  • SMWGUM THE NATIONAL WEATHER SERVICE IN TIYAN HAS ISSUED A * SPECIAL MARINE WARNING FOR...
  • SOUTHEASTERN GUAM COASTAL WATERS...
  • * UNTIL 1145 AM CHST.
  • * AT 1121 AM CHST, A SEVERE THUNDERSTORM PRODUCING WATERSPOUTS WAS LOCATED 33 NM SOUTHEAST OF IPAN BUOY, MOVING SOUTH AT 30 KNOTS.
  • HAZARD...WATERSPOUTS.
  • SOURCE...RADAR INDICATED.
  • IMPACT...WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE LOCALLY HAZARD…
ⓘ News summary · read the original report for full context.

📰 More news

All safety news →
🛡
Need help right now?In this country: Police 112 · Ambulance 112 · or request help through Jilinde.
Police 112 Get emergency help →