NWS Tiyan GUMA.W 0026September 26, 2026
Special Marine Warning: Guam Coastal Waters
The National Weather Service office in Tiyan issued a special marine warning for Guam Coastal Waters, which was in force until 4:00 p.m. local time on September 26. It was the 26th special marine warning the NWS office in Tiyan issued in 2026.
ExpiredWarning
In force for 29 minutes; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Tiyan GU
- Area
- Guam Coastal Waters
- Level
- Warning
- Issued
- 3:31 p.m. UTC+10, September 26, 2026
- Expires
- 4:00 p.m. UTC+10, September 26, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- PGUM MA.W 0026
- Official source
- National Weather Service: the notice at its source
NWS notices, September 2026The latest from the National Weather Service
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
SMWGUM THE NATIONAL WEATHER SERVICE IN TIYAN GUAM HAS ISSUED A * SPECIAL MARINE WARNING FOR... GUAM COASTAL WATERS... * UNTIL 400 PM CHST. * AT 330 PM CHST...A SHOWER CAPABLE OF PRODUCING WATERSPOUTS WAS LOCATED JUST OFF THE COAST OF EASTERN GUAM NEAR PAGO BAY OF MOVING SOUTHEAST AT 5 KNOTS. HAZARD...WATERSPOUTS AND WIND GUSTS 34 KNOTS OR GREATER. SOURCE...MARINE WEATHER SPOTTER. IMPACT...WATERSPOUTS CAN CREATE LOCALLY HAZARDOUS SEAS. SMALL CRAFT COULD BE DAMAGED IN BRIEFLY HIGHER WINDS AND SUDDENLY HIGHER WAVES. * THE SHOWER WILL REMAIN OVER MAINLY OPEN WATERS.
What the agency told people to do
WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE LOCALLY HAZARDOUS SEAS. SEEK SAFE HARBOR IMMEDIATELY.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.