Guam Severe Flash Flood Warning | Effective 10/01/2026 16:45
FFWGUM
The National Weather Service in Tiyan has issued a
* Flash Flood Warning for...
Southwestern Guam...
* Until 1045 AM ChST.
* At 945 AM ChST, Doppler radar indicated heavy rain across the
warned area. Between 0.6 and 1.2 inches of rain have fallen.
Additional rainfall amounts of 2 to 4 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,