Guam, Northern Mariana Islands Severe Flash Flood Warning | Effective 07/06/2026 00:59

Headline: 
Flash Flood Warning issued July 6 at 5:59PM ChST until July 6 at 8:15PM ChST by NWS Tiyan GU
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 6, 2026 - 12:59am
Expires: 
July 6, 2026 - 3:15am
Description: 
FFWGUM The National Weather Service in Tiyan has extended the * Flash Flood Warning for... Guam... Rota... * Until 815 PM ChST. * At 559 PM ChST, satellite estimates and rain gauge data indicate heavy rain continues to fall across the warned area. Flash flooding is already occurring. HAZARD...Flash flooding caused by heavy rain. SOURCE...Satellite estimates and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, and streets as well as other poor drainage and low-lying areas. * Some locations that will experience flash 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, Umatac, Sinapalo and Songsong.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. Stay away or be swept away. River banks and culverts can become unstable and unsafe.
Area Description: 
Guam, GU; Rota, MP
Forcast Office: 
NWS Tiyan GU