TITLE Holm Skerry Weather Station PROMPT A weather dashboard for an invented North Atlantic island, "Holm Skerry (Station 03-117)", presented as a mahogany instrument board of brass-and-enamel analog instruments drawn in SVG, each needle moving with real mechanical inertia. All data is clearly fictional, generated in the page from a smooth, plausible simulated weather system (a passing depression: pressure falls, wind backs and rises, rain arrives, front passes, pressure climbs, wind veers), looping over a simulated week and advancing in accelerated time (about 1.8 seconds per simulated hour). Concept: a dashboard with no rectangles of numbers: everything is a dial. Mood: steadfast, maritime, Victorian-scientific; calm even when the weather is not. Palette: enamel dial cream #EDE4CF, brass #B08D3C (with highlight #D9BC6A and shadow #6E5620), deep green-black #23312F for lettering, the barograph case lining, the signal-mast porthole and the baize desk under the log, signal red #A33B2B for warning sectors and one needle (the wind vane), sea grey-green #6F8F8C for secondary marks. Board in dark wood tones derived from #3B2A20 with procedural grain. Light instruments on a dark-wood board; overall the page reads warm and light because the dials dominate. Instruments (each with bezel, glass with a window-pane reflection, screws, engraved scale, maker's name "Tarrant & Lyle, Leith"): 1) Aneroid barometer (large, centre): 950–1050 hPa scale with the traditional words STORMY · RAIN · CHANGE · FAIR · VERY DRY, an inner inches-of-mercury scale, a black indicating needle and a brass set-hand the viewer can drag to mark the current pressure and see the trend. 2) Anemometer dial with wind speed in knots and a Beaufort ring, plus a small spinning cup-anemometer illustration whose rotation speed matches. 3) Wind direction rose with a 32-point compass and a red vane needle that hunts and gusts realistically. 4) Thermometer pair (dry and wet bulb) as glass tubes with rising mercury, and a derived humidity hand on a sub-dial. 5) Rain gauge: a graduated glass cylinder filling in mm, emptied daily at 09:00 with a little drain animation. 6) Barograph: a clockwork drum in a glazed case with a paper chart on which a pen, lifted by an aneroid stack, traces pressure in violet-ish ink; the drum visibly rotates and the trace extends: the signature object. About three days of the trace show on the curved face of the drum; the enlarged view unrolls all seven days. 7) Sunshine recorder card (burn trace under a glass sphere) and a small tide dial (high/low water hand). 8) Sea state indicator and visibility as two small subsidiary dials. In the header, flanking the plaque: a small 24-hour station clock with a day-of-week hand, and a signal mast in a baize-lined porthole. Signature moment: needle physics and the storm. Every needle is a damped spring following its target value with instrument-appropriate character (the barometer slow, heavy and slightly sticky, the wind vane nervous, the anemometer surging in gusts), with tiny tremble. When the depression deepens past 980 hPa, the board reacts: a red storm cone hoists on the signal mast (point down for a southerly gale, flipping point up when the wind veers north-west), the lighting dims as clouds pass (the glass highlights shift), rain streaks faintly across the window reflection in the dial glasses, and the log writes a gale warning in red ink. Tapping the barometer glass (click) makes the needle jump slightly, as with a real aneroid. Interaction: a brass time lever on a rail fixed to the foot of the board scrubs through the simulated week (drag or arrow keys; needles chase the values with inertia; the gale period is marked red in the slot), a hold/auto switch resumes; hovering any dial shows its exact reading in a small engraved-plate tooltip; clicking a dial (or its brass name plate; for the barometer the plate only, since its glass is for tapping) enlarges it to a detailed view beside a record card with the exact reading, a note, and a 24-hour history inked as a small chart. Below the board: the observer's log, handwritten-style italic entries generated from the state with the terse poetry of a shipping forecast ("Wednesday 0600. 980 falling quickly. S 8, rain, sea very rough. Shutters barred on the weather side."), and a typeset "general synopsis" with a twelve-hour forecast. Typography: engraved-style serif capitals for dial lettering (Georgia/"Times New Roman" with wide tracking), numerals rotated around the dials, title on a brass plaque: "HOLM SKERRY · METEOROLOGICAL STATION · EST. 1884". Responsive: instruments reflow from a 4-column board to two columns and then a single column of large dials on phones, barometer first. Reduced motion: needles move directly without oscillation; the drum does not rotate (the week's chart lies still and the pen travels across it). DESCRIPTION A wall of Victorian instruments mounted on grained mahogany: a great aneroid barometer at the centre, ringed by an anemometer, a 32-point wind rose, a psychrometer, a rain gauge, a clockwork barograph in a glazed case, a sunshine recorder and a cluster of small dials for tide, sea and visibility, all under a brass plaque. Nothing is a number in a box; every value is a needle, a mercury column, a water level or an ink line. A week of invented weather runs on a fast clock, and a deep Atlantic low arrives a few seconds after the page opens: the barometer needle sinks heavily into the red sector, the vane backs and twitches, the anemometer surges with each gust, rain streaks cross the window reflected in every glass, the light dims, and a red storm cone climbs the signal mast while the observer's log writes its warning in a slanting hand. Then the front goes through, the vane flies round to the north-west, and the glass leaps. The experience is meant to be calm and exact, like standing in a quiet room while the weather happens outside. VISUAL TECHNIQUES - Every instrument built procedurally as inline SVG: bezels, screws, tick rings, rotated numerals and arc-set lettering generated from scale functions - Brass rendered with layered multi-stop linear gradients (highlight, body, shadow) in opposed directions for a bevelled look; enamel faces with radial gradients - Damped-spring simulation per needle with individual stiffness and damping, gust noise built from summed sines, stiction on the barometer and micro-tremble - Deterministic weather model: skewed Gaussian depression, gradient-driven wind, backing and veering direction, frontal rain band, humidity, visibility, wave height and tide, precomputed over a looping 168-hour week - Barograph drum drawn in cylindrical projection: time lines, day labels and the violet trace are remapped through a sine each frame so the paper visibly turns; aneroid stack and pen arm are linked to the pressure - Glass layer on each dial with a four-pane window reflection whose angle and strength follow the cloud cover, and an animated SVG pattern of rain streaks clipped to that reflection - Wood grain from an feTurbulence filter with stretched frequency, plank seams and vignette; drifting cloud shadow and a warm lamp glow at night - Storm cone hoisted with a spring-eased transform, flipping orientation with the wind; pennant flutter rate tied to wind speed - Sunshine card scorched segment by segment with width and darkness set by the simulated sun - Enlarging transition that moves the live instrument itself into a detail view, with a history chart whose ink line draws itself - Log entries revealed with a pen-speed clip-path wipe on ruled paper; typeset synopsis with a drop capital INTERACTION MODEL The week advances on its own. Dragging the brass lever along the rail at the foot of the board (or focusing it and using the arrow, Page and Home/End keys) travels to any hour of the week and holds the clock there; every needle swings after the new values with its own inertia, the drum turns, the gauge fills or drains, and the log and synopsis rewrite themselves. The Hold/Auto switch starts the clockwork again. Clicking or tapping the barometer glass frees the needle with a small jump and a ripple on the glass; its brass set-hand can be dragged round the dial (or moved with arrow keys, and snapped to the needle with a double-click or Enter) so the gap between the two hands shows the trend. Hovering a dial with a mouse raises an engraved brass plate giving the exact reading in words. Clicking any other dial, or the name plate beneath any instrument, lifts that instrument off the board and enlarges it beside a record card showing the live reading, an inked chart of the last twenty-four hours (the whole week for the barograph) and a short note on the instrument; the round brass button, the Escape key or a click on the dark surround returns it to its place. All controls work with touch and keyboard, and with reduced motion the needles move directly and the drum stays still.