![]() ![]() San Francisco’s fog has gained an online personality with the name “Karl.” a social media account, has amassed a massive following, with over 356,000 followers on Twitter and more than 250,000 on Instagram. Karl, the Social Media Star of San Francisco Fog appears denser than it actually is, and it has a whimsical, ethereal quality that adds to its allure.ħ. You can put your hand through it, and although it may drizzle on your arm, it won’t feel like swimming in water. However, fog is actually made up of droplets with plenty of space between them. Many people have a misconception that fog contains a significant amount of water. It was the slow song in minor that the rock-and-roll sun then chased away.” Jonathan Franzen, Purity It was a temporary sadness, the more beautiful for being sad, the more precious for being temporary. Where it found open space, its weightless pale passage seemed both endless and like the end of all things. Where it encountered redwoods, the most local of rains fell. ![]() On better days it spread across the bay and took over Oakland street by street, a thing you saw coming, a change you watched happening to you, a season on the move. “Fog spilled from the heights of San Francisco like the liquid it almost was. So, next time you admire these towering beauties, remember that fog plays a vital role in their survival and growth. They absorb fog droplets through their leaves and even soak up the water that drips from the fog-saturated soil. During summer, these trees can derive over half of their moisture from the fog. Coastal Redwoods’ Misty DelightĬoastal Redwood trees, the magnificent giants found along the California coast, have a unique relationship with fog. So, next time you find yourself walking through the misty streets of San Francisco, you’ll know that you’re experiencing a cloud close to the ground. Fog blankets the ground, giving it a distinct appearance, whereas clouds fill the sky. CloudsĪccording to the National Weather Service, fog is defined as visible moisture that forms below a height of 50 feet, while clouds are located above this height. So, the next time you find yourself surrounded by the mystical embrace of San Francisco’s fog, remember that it’s a dance of science and nature in the air.Ĥ. As the air continues to cool, it loses its ability to hold the vapor, causing it to condense around tiny particles and form droplets. When humid air cools and reaches its dew point, it becomes saturated with water vapor. During the summer, also known as the foggy season, these horns can sound for over five hours a day, ensuring safe passage for ships navigating through Karl’s misty realm.įog is essentially water droplets suspended in the air, mixed with dust and other microscopic particles. Located at the middle of the bridge and the south tower on the San Francisco side, each horn emits a different tone at different times. Since the bridge’s opening in 1937, these horns have become synonymous with San Francisco’s identity. These fog horns play a crucial role in guiding sailors safely through the wall of fog. The iconic Golden Gate Bridge has two fog horns that blast for 2.5 hours each day, on average. The Symphony of Fog Horns on the Golden Gate Bridge ![]() Unlike radiation fog, which dissipates in the morning, Karl persists throughout the day, shrouding the city in its misty embrace. This low-rolling fog, known as Karl, forms when the warm air passes over colder surfaces like the San Francisco Bay or nearby land. As warm, moist air from the Pacific Ocean collides with the cooler California wind current near the coast, the fog rolls in. San Francisco experiences a unique type of fog called advection fog. The Dance of Advection Fog: When Karl Sweeps In ![]()
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