Reading the Sky Before You Lift a Brush

Moorland skies are rarely still. On the North York Moors or across the Peak District, a morning of pearly grey can turn into bruised slate and driving rain inside twenty minutes, then open again into a shaft of gold that lights the heather like a match. That restlessness is exactly what makes these skies such rewarding subjects — but only if you decide quickly what the painting is about. Before you mix any colour, stand still for five minutes and ask: is this a rain painting, a light painting, or a cloud-shape painting? You cannot give equal weight to all three.

Find the dominant cloud mass and trace its silhouette with your eye. Note whether the light comes from behind the cloud — backlit, dramatic, full of glow — or from the side, which models form but softens the drama. Most memorable moorland skies are backlit, so hold that in mind from the first wash onwards.

A Palette Built for Grey and Gold

Moorland grey is never really grey. It is warm, cool, violet and green by turns, which is why a mixed neutral is far livelier than anything straight from a pan. A workable core palette:

• French ultramarine — the backbone of cloud shadow, and a beautiful granulator on rough paper.
• Burnt sienna or transparent red oxide — the warm counterweight, essential for the pink-grey edges of rain clouds.
• Raw umber — for the dull, heavy undersides of shower clouds.
• Cerulean or cobalt blue — clean, cool distance and veils of rain.
• Yellow ochre and a warm orange — for breaks of light and the glow near the horizon.
• A touch of alizarin or permanent rose — revives any grey that has gone dead.

Mix your greys on the paper as often as on the palette. Ultramarine dropped into a damp wash of burnt sienna will granulate into a soft, breathing grey that no pre-mixed puddle can imitate.

Laying In Sweeping Cloud with Wet-in-Wet Washes

Work on 300gsm rough or NOT paper, stretched or taped down, and tilt the board to roughly fifteen or twenty degrees. Wet the sky area with clean water, then load a large squirrel or goat-hair mop and lay in the cloud shapes with the side of the brush. Sweep in the direction the cloud is actually moving — big, confident, diagonal strokes. This is no place for a small brush.

Paint the lightest clouds first and let them settle slightly before dropping in the darks beneath. Charge the heavier undersides while the paper is still damp but no longer shiny. If a stroke begins to bloom, leave it. Those feathered edges are the whole point of a moorland sky. Walk away for ten minutes rather than fiddling.

Distant Rain and Veils of Shower

Rain on the horizon is one of the most evocative things you can paint, and one of the easiest to overwork. The trick is tone, not texture. Mix a weak cerulean-and-rose grey and drag it vertically downwards from the base of a cloud with a large flat brush, one clean motion per streak. Vary the strength — some curtains of rain almost disappear, others sit nearly black against a bright patch behind them.

Keep the furthest rain lightest and coolest; anything closer should be a touch darker and warmer. Where the rain meets the moor, blur the base with a damp, thirsty brush so land and shower merge. A dry-brush scrape across the middle distance suggests drizzle without spelling it out.

Breaks of Light: Making the Sky Sing

The drama almost always comes from contrast — a bright break against a dark cloud mass. Protect that brightness ruthlessly. Leave the white of the paper untouched, or lift back to it with clean water while the wash is damp. Then paint the cloud surrounding it as dark as you dare.

• Place the brightest break off-centre, roughly a third of the way across, so the eye has somewhere to travel.
• Give the lit edge of a cloud a slightly harder edge than its shadow side; that crisp rim makes light feel directional.
• Let the light spill onto the land too — a dry-brush stroke of pale ochre along distant ridge tops ties sky and ground together.
• Resist glazing over a bright passage later. Once lost, that luminosity does not come back.

Sketching and Nature Journaling on the Moor

Nothing improves your skies faster than drawing them from life. Take a hardback sketchbook with an elastic closure, a couple of waterproof pens, a small box of half pans, a 150ml water bottle and a folded square of kitchen roll. Work standing if you can — it keeps your brushwork loose and your studies short.

In your journal, note the date, wind direction and weather as well as the drawing. Two-minute tonal sketches with a single grey wash, plus a few colour notes in the margin — cloud shadow: ultramarine + burnt sienna — will teach you more about how light behaves than a whole afternoon in the studio.

Finally, be prepared. Moorland weather turns fast, so carry waterproofs, weight your board against the wind and keep your water in a sealed jar. Sketching in drizzle, with the sky doing exactly what you came to paint, is one of the great pleasures of being a British watercolourist — so embrace the grey. It is rarely dull for long.