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The air in the marine layer becomes very moist and very low clouds or fog occurs. [19] [20] If wind gradients turn on-shore with enough strength, this sea fog is blown onto the coastal areas. This marks a sudden and surprising transition from the hot, dry Santa Ana conditions to cool, moist, and gray marine weather, as the Santa Ana fog can ...
The low-altitude stratus clouds that make up the June Gloom cloud layer form over the nearby ocean, and are transported over the coastal areas by the region's prevailing westerly winds. [1] The sheet-like stratus clouds are almost uniformly horizontal, covering large areas but having relatively shallow depth of 500 to 2,000 metres (1,600 to ...
High clouds form in the highest and coldest region of the troposphere from about 5 to 12 km (16,500 to 40,000 ft) in temperate latitudes. [9] [10] At this altitude water almost always freezes so high clouds are generally composed of ice crystals or supercooled water droplets.
The aurora borealis put on quite the show over the United States multiple times in 2024, and 2025 promises even more opportunities to witness these celestial light displays.
Sea of fog riding the coastal marine layer through the Golden Gate Bridge at San Francisco, California Afternoon smog within a coastal marine layer in West Los Angeles. A marine layer is an air mass that develops over the surface of a large body of water, such as an ocean or large lake, in the presence of a temperature inversion.
The largest coastal gap is the Golden Gate at the entrance to San Francisco Bay which also communicates via the Bay with the Carquinez Strait and the Central Valley. [7] As the city of San Francisco lies adjacent to the Golden Gate, it is often subject to the fog and low clouds blowing in on the marine layer.
Noctilucent clouds form at a very high altitude on the edge of space and are visible between the end of May and the start of August every year. Rare, high-altitude clouds amaze stargazers [Video ...
Meanwhile, coastal cities like Los Angeles, San Diego and San Francisco really don't start feeling the warmth until the second half of the summer, some not even until summer's waning days.