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

⚡Energy

Sep 21, 2026 · NO. 0921
THE READ — what this desk must decide today

more than 4,000 homes already dark, and three grids facing wind, hail or flood inside the day

Restoration in one place, pre-positioning in three. In Chiba more than 4,000 homes are already without power with the rain still peaking, so the work is crew access on slopes under a level-four landslide warning — a safety decision before a restoration one. Southern Brazil is the pre-positioning case: gusts above 100 km/h and hail over about 699 municipalities is a distribution-network day, and crews have to be staged before the peak rather than after. The north German and Baltic coast takes force 8 wind today, calming Tuesday. In the American interior the exposure is flooded substations and access roads rather than wind — and the heat load has left the board entirely, at 1 Heat Advisory with the acute tier at zero, which frees reserve margin at exactly the moment the water needs the crews.

THE DRIVERS 1–12h — what is driving this desk today
EASTERN JAPAN — A TYPHOON DEEPENED ON APPROACH AND PAID IT OUT IN WATER: 426.5 MM IN A DAY ON IZU OSHIMAPEAK→RIO GRANDE DO SUL, SANTA CATARINA AND PARANA — A RED GREAT-DANGER ALERT OVER ABOUT 699 MUNICIPALITIESPEAK→SPAIN CLEARED UNDER HIGH PRESSURE, AND THE REMAINING EUROPEAN WIND MOVED TO THE NORTHERN COASTEASING→THE AMERICAN INTERIOR — 32 FLOOD WARNINGS ON GROUND THE OUTLOOK ITSELF CALLS SATURATEDACTIVE→THE AMERICAN SOUTH-CENTRAL — THE HEAT BOARD EMPTIED TO A SINGLE ADVISORYEASING→
THE RECORD past — how exposed this desk has run

carried on 44 of the last 67 editions — since Jul 5, the 10 most recent shown.

Sep 21A TYPHOON DEEPENED ON APPROACH AND… · A RED GREAT-DANGER ALERT OVER ABOU… · SPAIN CLEARED UNDER HIGH PRESSURE
Sep 20THE ADVISORY FOOTPRINT SHRANK TO A… · THE WIND EASES AS IT TURNS ONTO TO… · THE COASTAL EXTRATROPICAL CYCLONE …
Sep 19the advisory tier widened to 13 · the window became an extratropical… · a Slight risk over the central Pla…
Sep 18record-challenging heat · the last polar wave before Spring … · Orange 6 and Orange 5
Sep 17fifteen advisories · Antarctic air holding south while … · Orange level 6 on the KwaZulu-Nata…
Sep 16twelve advisories · the Antarctic front landed on sche… · snow above 600 m
Sep 15THE MID-SOUTH HEAT REGIME HELD: 0 … · THE FLOOD TOLD TO TAPER TODAY EXPA… · THE EXTREME-COLD ALERT CLEARED ENT…
Sep 13THE ACUTE TIER HELD AT ZERO A SECO… · A MARGINAL DAY FOR DAMAGING WIND A… · THE POLAR PHASE TOOK OVER: YELLOW …
Sep 12THE ACUTE TIER READ ZERO · RED-FLAG WARNINGS ROSE 6 TO 10 AS … · THE WATER IS CERTAIN AND THE CAUSE…
Sep 11THE ACUTE-HEAT TIER COLLAPSED A SE… · A FINAL ADVISORY · A RED WARNING THAT WALKED SOUTH ON…