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South America 45s 70w

45°S, 70°W · Lesley Tannahill · 2026-08-02

south-america-45s-70w weather artwork
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Creative Rationale

Over the windswept Patagonian plains of southern Argentina, where the Andes meet the Atlantic steppes, a dramatic atmospheric disturbance unfolds with extremely low pressure and high winds from the northeast. The steep pressure gradient of 45.91 Pa/cell creates dense archaeological layers of paint where each atmospheric shift has left its mark, while the significant temperature anomaly of 17.8K drives chaotic gestural marks that break through more structured underlying layers. The high humidity of 95% renders these palimpsest layers translucent and ghostly, allowing decades of imagined reworking to show through, while light precipitation adds subtle drip marks that speak to time's passage across this harsh, beautiful landscape.

Atmospheric Data

Date
2026-08-02
Location
45°S, 70°W (South America 45s 70w)
Pressure
928.2 hPa (gradient: 45.91)
Wind
10.8 m/s from 71°
Temperature
1.4°C (anomaly: 17.8°C)
Humidity
95%
Precipitation
1.8 mm
Visual Interest Score
27.6

Technical Details

Model
Claude Sonnet 4 via Amazon Bedrock
Artist Inspiration
Lesley Tannahill
Weather Source
Open-Meteo API (GFS model)
Format
SVG (2400x1600 viewBox) + PNG
Generated
2026-08-02T06:15:21.699827+00:00
Run ID
2026-08-02-060044

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