Guam is not under a Tropical Storm Warning or Typhoon Warning. Typhoon Choi-wan (26W) is tracking through the northern Mariana Islands, but its circulation continues to enhance the southwest monsoon flow affecting Guam.
The National Weather Service (NWS) Tiyan forecasts 4 to 6 inches of rainfall for Guam and Rota during the Flood Watch period. Southwest winds of 25 to 35 mph with gusts up to 45 mph are expected under the Wind Advisory, while stronger winds over Guam coastal waters are producing gale conditions and seas of 15 to 18 feet.
Current Hazards for Guam
Flood Watch — through late Sunday night, October 4. Flash flooding caused by excessive rainfall remains possible. Flooding may occur along rivers, creeks, streams, urban areas, and other low-lying and poor-drainage locations.
Wind Advisory — until 4 a.m. Sunday, October 4. Southwest winds of 25 to 35 mph with gusts up to 45 mph are expected. Gusty winds may blow around unsecured objects, bring down tree limbs, and result in a few power outages.
Gale Warning — until 5 p.m. Saturday, October 3. Southwest winds of 25 to 35 knots with frequent gusts up to 45 knots and seas of 15 to 18 feet are expected across Guam coastal waters.
Hazardous Seas Watch — from Saturday afternoon through Sunday afternoon. Very steep and hazardous seas of 15 feet or greater are possible.
High Surf Advisory — until 4 a.m. Monday, October 5. Large breaking waves of 8 to 12 feet are expected along north-, south-, and west-facing reefs.
High Rip Current Risk — through late Sunday night, October 4. Dangerous and potentially life-threatening rip currents are expected.
What You Should Do Now
Residents and motorists are advised to take the following precautions:
- Secure loose outdoor objects, including canopies and other lightweight items that may be moved by strong winds.
- Use extra caution when driving, particularly in high-profile vehicles and on exposed roadways.
- Monitor conditions closely and be prepared to take action if a Flash Flood Warning is issued.
- Do not drive through flooded roads. Turn Around, Don't Drown.
- Stay clear of reefs, shorelines, and the water. Inexperienced swimmers should remain out of the water due to dangerous surf and rip currents.
- Mariners, especially those operating smaller vessels, should avoid boating in hazardous conditions and heed all marine warnings and watches.
GHS/OCD continues to monitor conditions in coordination with NWS Tiyan and will provide additional information as needed.
For the latest official weather information, visit weather.gov/gum. For preparedness information, visit ghs.guam.gov or contact GHS/OCD at 475-9600.
Media Contact:
Logan Reyes
Acting Public Information Officer
Guam Homeland Security / Office of Civil Defense
logan.reyes@guam.gov