Web alarm clock for 6:09 p.m.
As you hand the flood preparations to the next person at 6:09 pm, point out which supplies still need carrying upstairs and which rooms have already been cleared. Set the alarm before you step away so the changeover does not leave sacks, drinking water, torches, or documents below. A 7:00 pm alert gives the incoming helper a clear checkpoint for another sweep of the ground floor.
Because the flood task is passing between people, keep this browser page open while the alarm is counting down and leave the phone or computer awake. Closing the page or browser ends the alarm, and a sleeping device may keep it from sounding, so the supplies could remain downstairs without the expected reminder. Tell the next person where the active alarm is displayed, keep the volume audible, and confirm that 6:09 pm appears before leaving the screen.
During a wet-season afternoon in the Philippines, voices, footsteps, rain on the roof, and vehicles outside can mask an alert while everyone is moving supplies. By the time 7:00 pm approaches, some of that activity may ease or shift upstairs. Place the device near the handover point, use a clearly audible tone, and ask the incoming helper to listen for it there rather than from another room.