🛟Public safety

six national warning systems live at once, and the lead time is different in every one

Six systems, six different distances between the warning and the water. In Vietnam the lead time has already been spent — about 200 communes carry a flash-flood and landslide warning, 712 households are relocated, and the axis has just moved onto the Red-River delta, so the live job is evacuation sequencing and urban drainage in the same country on the same morning. In Pakistan the warning still runs ahead of the worst of it: three days left in a Sep 12–17 spell, with the urban-flood risk drawn over Rawalpindi, Sialkot and Lahore — time to pre-position rather than time to watch. Bangladesh has just opened a 24–72 hour window across about ten districts with four or more rivers already above danger. Saudi Arabia's 5 red heavy-rain warnings are the highest tier anywhere on today's board, in Asir and Jazan. South Africa's warnings were re-issued after a standdown, which is the case for keeping a duty roster on a system you have already closed. And the American event moved to Thursday, which is the easiest lead time to waste. The person at the end of every one of these chains is deciding whether to move tonight or wait an hour. (Handled with care; equipping institutions, not substituting for them.)

carried on 35 of the last 61 editions — since Jul 18, the 10 most recent shown.