Guam Severe Flash Flood Warning | Effective 10/09/2026 18:30
FFWGUM
The National Weather Service in Tiyan has issued a
* Flash Flood Warning for...
Central Guam...
* Until 1230 PM ChST.
* At 1130 AM ChST, trained weather spotters reported heavy rain
across the warned area. Flash flooding is ongoing or expected to
begin shortly.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Off-duty NWS Employee reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.