


Flash Flood Watch
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
326 WGMY60 PGUM 280519 FFAGUM Flood Watch National Weather Service Tiyan GU 319 PM ChST Sat Jun 28 2025 GUZ001-MPZ001-281330- /O.CON.PGUM.FA.A.0001.000000T0000Z-250629T2000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Guam-Rota- 319 PM ChST Sat Jun 28 2025 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE SUNDAY NIGHT... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Guam and Rota. * WHEN...Through late Sunday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - While showers diminish slightly overnight, a developing monsoon disturbance well to the north of the region will allow a wet southwesterly pattern to develop across the region by Sunday night, bringing higher likelihood for flash flooding over the next several days. As such, the Flash Flood Watch might be extended and potentially include Tinian and Saipan, if conditions warrant. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ EM