Guam Minor Flood Advisory | Effective 09/15/2026 10:14

Headline: 
Flood Advisory issued September 16 at 3:14AM ChST until September 16 at 5:00AM ChST by NWS Tiyan GU
Event: 
Flood Advisory
Urgency: 
Expected
Effective: 
September 15, 2026 - 10:14am
Expires: 
September 15, 2026 - 12:00pm
Description: 
* WHAT...Urban area and small stream flooding caused by excessive rainfall continues. * WHERE...Guam... * WHEN...Until 500 AM ChST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways possible. Rises in small streams. * ADDITIONAL DETAILS... - At 311 AM ChST, Doppler radar indicated heavy rain due to additional heavy showers and thunderstorms. This may cause urban and small stream flooding. - Additional rainfall amounts of 0.5 to 1.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Dededo, Tamuning, Yigo, Mangilao, Chalan Pago-Ordot, Barrigada, Yona, Hagatna Heights, Andersen AFB, Talofofo, Mongmong-Toto-Maite, Sinajana, Inarajan, Asan, Merizo, Piti, Santa Rita and Umatac. - http://www.weather.gov/safety/flood
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.
Area Description: 
Guam, GU
Forcast Office: 
NWS Tiyan GU
Sender: 
w-nws.webmaster@noaa.gov