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Tropical South America 15s 70w

15°S, 70°W · Sam Francis · 2026-07-09

tropical-south-america-15s-70w weather artwork
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Creative Rationale

Over the high Andes of Peru and Bolivia, where extreme altitude creates an otherworldly atmospheric environment, the thin air and intense solar radiation produce dramatic weather patterns. The extremely low pressure at this elevation, combined with gentle winds and surprisingly low humidity despite the tropical latitude, creates conditions that feel almost Martian - sparse, crystalline, with pockets of intense energy scattered across a vast, breathing landscape. This translates into Francis's signature approach of explosive color bursts concentrated at the canvas edges, with the low pressure manifesting as dense, saturated pools of ultramarine and cadmium red that seem to gravity-feed toward the corners, while the gentle wind creates soft, organic splatters that don't quite reach the luminous white center.

Atmospheric Data

Date
2026-07-09
Location
15°S, 70°W (Tropical South America 15s 70w)
Pressure
637.9 hPa (gradient: 336.74)
Wind
2 m/s from 66°
Temperature
5.2°C (anomaly: 12.9°C)
Humidity
22%
Visual Interest Score
23

Technical Details

Model
Claude Sonnet 4 via Amazon Bedrock
Artist Inspiration
Sam Francis
Weather Source
Open-Meteo API (GFS model)
Format
SVG (2400x1600 viewBox) + PNG
Generated
2026-07-09T00:26:35.819465+00:00
Run ID
2026-07-09-000258

License: CC BY-NC-ND 4.0. Attribution: James Tannahill / art.jamestannahill.com. No commercial use or derivatives without permission.