Tomorrow.ioTomorrow.io THE ATMOSPHERE TODAY · DESK← TODAY'S COVER
DESK

Maritime

Sep 17, 2026 · NO. 0917
THE READ — what this desk must decide today

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.)

THE DRIVERS 1–12h — what is driving this desk today
Tropical Storm Dujuan — named, recurved, and aimed at eastern JapanBUILDINGThe east Pacific — the genesis engine ramps as its rain finishes onshoreBUILDINGSaudi Arabia — a red flash-flood run dated through FridayACTIVEThe Philippines — a Palawan low inside the convergence zoneEMERGINGSouth Africa — Orange level 6 on the KwaZulu-Natal south coastPEAKNew Zealand — the South Island cleared, and the front hands off northEASINGThe Adriatic — the last hot pulse today, then a north-west wet reversalCRESTING
THE RECORD past — how exposed this desk has run

carried on 28 of the last 63 editions — since Aug 4, the 10 most recent shown.

Sep 17named · the genesis engine ramps as its ra… · a red flash-flood run dated throug…
Sep 16east of Saipan · a last hot pulse · a red flash-flood run now dated th…
Sep 15THE EASING SLIPPED A DAY AND THE W… · A FRESH NORTH-BAY-OF-BENGAL LOW FO… · A LAST HOT PULSE CRESTS ON THE SOU…
Sep 13A CUT-OFF LOW RE-ARMS SOUTH AFRICA… · THE RED IS DOWN TO ORANGE AS THE B… · ONE LAST HOT DAY PEAKING SEP 14 ON…
Sep 12THE RED HELD A SECOND MORNING · THE DEADLY OUTBREAK HAS PASSED SOU… · NEAR HURRICANE STRENGTH AT 65 MPH
Sep 11A RED WARNING THAT WALKED SOUTH ON… · AN ORANGE-TIER OUTBREAK ON THE TRO… · A FINAL ADVISORY
Sep 8A CATEGORY-2 LOWELL AT CLOSEST APP… · MARIE WEAKENING OFFSHORE · 28.0 CM
Aug 28A DOUBLE LANDFALL IN ZHEJIANG · A RECORD FLOOD DRAINING · KAUB STOPPED FALLING AT 60 CM
Aug 27LANDFALL SLIPPED TO FRIDAY MORNING… · TWO LANDFALLS DONE · THE RECORD FLOOD BEHIND NARRA IS R…
Aug 25PAST ITS PEAK AND FILLING ON A PUB… · WEAKER EVERY DAY AND COSTLIER EVER… · ABOUT 54