A storm that had no name on Sunday is now turning toward Tokyo over the holiday weekend.

nine national warning systems live at once, three fatalities already counted, and exactly one hazard with a published start time

Nine systems, nine different distances between the warning and the water — and the only one with a clock on it starts today. The fatal event is in the American Southwest: a Moderate, level 3 of 4, excessive-rain risk over Arizona and New Mexico, three killed overnight in New Mexico, water rescues in Tucson and more than 3 inches in 3 hours near Phoenix — swift-water staging and low-water-crossing closures decided in hours, and the disturbance eases after today. The planned event is Nigeria's: the regulated release begins today, ramping 100 to 1000 m³/s over seven days, with NEMA's Abuja EOC activated and eleven Benue-bordering states alerted, which is the rare case where evacuation sequencing runs off a published schedule rather than a gauge. The ahead-of-us event is Japan's: rain from Saturday onto soil at about 365 percent of normal, across the Silver Week holiday. Behind those, Vietnam moves its focus to Ho Chi Minh City for five days, the Philippines carries flash-flood and landslide risk from a Palawan low, South Africa is at Orange level 6 on the KZN south coast, Saudi Arabia's reds run through Friday, and Pakistan's spell ends today onto loaded rivers. The call that belongs to the emergency manager is which of those clocks they are actually allowed to use. (Handled with care.)

a holiday-weekend flight bank into Tokyo, a flooded Southwest hub pair today, and an easy day everywhere else

The decision this desk owns today is a pre-cancellation, and it is about a weekend that has not arrived. Dujuan reaches eastern Japan from Saturday — Ogasawara Saturday, the Izu Islands Sunday, rain into Tokyo behind them — across Silver Week, which puts Haneda and Narita holiday banks, trans-Pacific routing and fuel loads on a 70-knot peak and a saturated-ground rain footprint rather than a wind-limit question, and the call gets cheaper the earlier it is made. Today's live disruption is in the Southwest, where a Moderate excessive-rain risk over Phoenix and Tucson is a ground-stop and ramp-closure problem for one operational day before the risk eases and heat becomes the weekend's southern story with records challenged. The American convective picture is Marginal only, Day 1 and Day 2. In Europe, orange criticality over Liguria and Emilia-Romagna and AEMET orange for Mallorca and Almería are the live items, with a coastal wind maximum of 8.5 m/s on the Croatian side as a crosswind note. (The Adriatic figures are internal situational context.)

a holiday rail and port weekend in Japan, a dated release on an African waterway, and a river still too low to load

Too much water in four places, not enough in one, and only two of them come with a date. Japan is the week's biggest sequencing problem: rain into eastern Japan from Saturday on ground at about 365 percent of normal puts Shinkansen and commuter-rail suspension planning, Tokyo-Bay and Izu ferry and port-call sequencing and slope and drainage watch onto a holiday weekend, when the network is already at its busiest. Nigeria's Benue corridor carries rain flooding now and a regulated release from today, which puts river crossings and inland-waterway movements on a known seven-day ramp instead of a surprise. Southern Vietnam takes a five-day spell over the country's main logistics region from today, and the Philippines' Palawan low is an inter-island question across the Visayas. Against all of that the Rhine at Kaub reads 24.0 cm, down 3 cm to a fresh low, which keeps barge loading constrained without offering a planner a date to work toward. Buy schedule buffer for the weekend, or hold capacity for the Japanese holiday — that is the trade.

an island chain in a named storm's path, two genesis areas offshore, and a fishing coast under red

The most consequential marine call today is an island ferry timetable, and the second is a routing decision made on a probability. Dujuan runs north-north-east at 15 knots toward a 70-knot peak, passing Ogasawara on Saturday and the Izu Islands on Sunday — small-craft and inter-island ferry go/no-go for communities whose only link is the boat, plus Philippine-Sea routing and port-call sequencing, with no watches for Guam, Saipan, Tinian or Rota. Offshore of south-western Mexico two areas at 70 and 60 percent over seven days are likely depressions this weekend, which is a routing question before it is a warning. Saudi Arabia's reds hold on the south-western coast through Friday; the Philippines' Palawan low sits across the Visayas shipping lanes; South Africa's Orange level 6 and Argentina's and New Zealand's fronts put sea state and visibility into the southern passages, with the NZ front now handing off to the North Island. Coastal wind maxima on the Croatian side run to 8.5 m/s. (The Adriatic figures are internal situational context.)

a national holiday weekend in the path of a storm, and outdoor crowds under heat records at the other end of the board

Once a year the calendar and the weather collide on purpose, and this is that weekend. Silver Week puts Japan's crowds on the move exactly as Dujuan's rain arrives — Ogasawara Saturday, the Izu Islands Sunday, eastern Japan including Tokyo behind them, on soil at about 365 percent of normal since Sep 1 — which makes outdoor-event and festival go/no-go, crowd-flow and transport-contingency calls for organisers whose attendance is holiday-dependent, and the honest framing is rain and ground, not wind. At the other end of the board, the American South turns hot into the weekend with records challenged and heat advisories 12 to 15 at a heat index of 105 to 109 °F — a hydration, shade and start-time question for outdoor venues, on the same week the Southwest was under water. Europe's orange criticality in Liguria and Emilia-Romagna and Brazil's yellow storm and hail window over Minas Gerais are the smaller, sharper versions of the same call.

floodwater reaching dense settlement on four continents, three deaths already, and a heat tier that reaches outdoor workers

The acute tiers are mostly empty and the exposure is not. The day's confirmed human cost is in New Mexico — three killed overnight, with water rescues in Tucson — which is a mass-casualty-prevention and rescue-capacity question for one operational day. Where the water is standing rather than moving, the health problem follows it: Nigeria's Benue states face a dated release onto already-flooded ground, which is exactly when water, sanitation and disease surveillance can be staged in advance; southern Vietnam's five-day spell and the Philippines' Palawan low are the same problem without the schedule; Bangladesh's rivers were last read rising; and Nepal's ledger — a reported ~1,386 dead and ~5,130 missing at a Sep-12 vintage — is a recovery-access problem, carried at vintage and not re-counted. Meanwhile 15 Heat Advisories across eight American states at a heat index of 105 to 109 °F sit under zero Extreme Heat Warnings — the tier that reaches outdoor workers and people without cooling, and the one that rarely makes a headline. (Handled with care.)

harvest and livestock decisions on five continents, and one of them can be read off a published schedule

The same question everywhere — move now or wait — and today one grower can answer it from a timetable instead of a gauge. In Nigeria's Benue states, lifting harvest and relocating livestock ahead of a release that begins today and ramps for seven days is a planning problem rather than a reaction, which is the rarest thing on this board. In Japan, rain from Saturday onto soil at about 365 percent of normal is a standing-crop and slope-stability question at the end of the growing season, on a holiday weekend when labour is scarce. India's eastern spell eased on cue, opening a working window before the Sep 19-21 southern one; Pakistan's spell runs its last day on loaded rivers; southern Vietnam's rice and aquaculture take a five-day spell from today. In the American Southwest the flood is on rangeland and irrigation infrastructure before the weekend's record-challenging heat arrives on the same ground; and Argentina's and Brazil's cold, hail and low humidity sit on livestock and standing crops rather than on a harvest.

cooling load in one hemisphere, heating load in the other, and a hydropower release running to a published plan

Two opposite loads in one morning, and one generation asset operating to a schedule. The American South holds 15 Heat Advisories, up from 12, with the acute tier empty and records challenged into the weekend — steady, rising cooling demand on a grid whose severe risk is Marginal only and whose Southwest flood is a distribution and restoration problem for a day. In the southern hemisphere the load is heating: Patagonian snow at 15 to 60 cm with minima near −10 °C, and a South African cut-off low at Orange level 6 with snow on the southern Drakensberg. Between them, Nigeria's regulated release from today is reservoir management on a published plan, which is the case where downstream operators and grid planners act on a date rather than a gauge. Fire weather eased slightly — Red Flag 2 to 1 — with PL3 held and 61 uncontained large fires, a transmission-corridor question in the American west. In Japan, the storm's rain lands on distribution rather than generation.