The same producer as the SE-Australia synoptic maps, wider domains: the whole hemisphere, pole at centre, or an Australia-wide regional box roughly matching the familiar deterministic charts. Same ensemble-mean caveats apply — read the pattern, not the position.
npm run synoptic:refresh -- --views core-anomaly You are reading a local build, so this command does what it says: it rebuilds this machine's copy. The deployed site is untouched.
You are reading the deployed site, where this command cannot help — it rebuilds whichever machine runs it, not this one. The live site is rebuilt and redeployed twice a day by the Refresh models and deploy workflow, whose Run workflow button does the whole job with no terminal.
The whole hemispheric steering pattern, pole at centre — where the circumpolar flow is troughing or blocking relative to normal for the date.
+12 h · valid 30 Sept 2026, 00:00 UTC · Wed, 30 Sept, 10:00 AEST
Bands departure from the 1991-2020 daily normal, -400–400 gpm in 50-gpm intervals; 500 hPa geopotential height contours 4800–6000 gpm, 60 gpm
Use the slider, the arrow buttons, or Left/Right Arrow while the slider is focused. Frames are discrete model steps 12 hours apart — nothing is interpolated between them.
Both views are the same 500 hPa height anomaly as the SE-Australia panel — forecast height minus the 1991-2020 daily normal for that date — drawn over a wider extent instead of one corner of it. Deep blue is a trough digging further than normal, deep red a blocking ridge. Each domain gets its own colour scale, chosen for the anomalies it actually reaches: the hemispheric view runs to ±400 gpm near the pole, the Australia-wide view to ±280 gpm.
The SE-Australia panel is a window onto one part of the circumpolar westerly belt. A blocking high sitting in the Tasman, or a trough digging from well south of the continent, often only makes sense in the context of the whole wave pattern — the hemispheric view — or the whole continent's response to it — the Australia-wide view — neither of which the regional panel alone shows.
The Australia-wide view resembles the deterministic ECMWF "500 mb height & anomaly" charts published elsewhere, but is not the same product: this is the 50-member ENS mean, not the single HRES deterministic run — the more honest product for a lead this far out, where a single run's exact position is not something to read literally. The baseline is NCEP/NCAR Reanalysis 1991-2020, not the CFSR 1981-2010 period those charts typically use, and heights are in geopotential metres (gpm), not decametres (dam).