Los vientos Santa Ana avivan los incendios en California (1) infographic
El gráfico muestra la formación de los vientos Santa Ana y los mayores incendios en el sur de California.
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Los vientos Santa Ana avivan los incendios forestales en California (1)

By Phil Bainbridge

January 8, 2025 - Los incendios forestales avivados por los “potencialmente letales” vientos Santa Ana – cálidos y secos, formados en el Desierto de la Gran Cuenca del suroeste de EUA – obligan a la evacuación de más de 100.000 residentes del sur de California

Santa Ana winds are formed when a high pressure ridge forms over the the Great Basin and upper Mojave Desert which includes most of Nevada and Utah, in contrast to a low pressure area over the coast. Unlike the typical airflow at this time of year, a “kabatic” wind is generated which flows downhill, over the mountains towards Los Angeles.

The hot dry air is funnelled through the mountain valleys and canyons of the Sierra Nevada, San Gabriel and San Bernardino Mountains where the greater pressure increases the temperature. With a relative humidity of under 20%, and with typical wind speeds of 90km/h, gusting at up to 130km/h, the Santa Ana dries out vegetation so it burns more readily.

Sources
PUBLISHED: 09/01/2025; STORY: Graphic News
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