December 18th, 2025 Timelapse
On December 18th, the day began under a blanket of cloud cover that was an impressive 100% throughout all layers, making the sky a uniform gray canvas. Surface winds were blowing at an average of 13.9 mph, while winds at 100 meters soared to 23.8 mph, creating a notable layer of wind shear. This discrepancy in wind speed between the surface and higher altitudes caused some turbulence that affected the low, mid, and high cloud layers, which were all saturated with moisture. The temperature hovered around a chilly 40.2°F, accompanied by light precipitation, which amounted to 0.25 inches by the end of the morning. As the day unfolded, these low clouds drifted slowly, reflecting the gentle surface winds, while the faster winds aloft moved the higher clouds in a more dynamic fashion, resulting in a striking contrast across the sky.
As midday approached, conditions remained remarkably stable, with surface winds slightly decreasing to an average of 12.3 mph, while winds at 100 meters dipped to 22.5 mph. Despite these slight changes, the continuous 100% cloud cover persisted, with low clouds dropping to 99.5% and mid and high clouds remaining fully intact. The air temperature rose slightly to 45.3°F, and precipitation increased to 0.63 inches, suggesting that the moisture-laden clouds were beginning to release their contents more readily. The interplay between the slower surface winds and the moderately stronger winds aloft continued to create layers of turbulence, causing the cloud dynamics to shift. The lower clouds moved more lazily, while the upper layers raced across the sky, creating a mesmerizing effect of layered movement and depth.
By evening, temperatures climbed further to an average of 53.9°F, and the overall cloud cover remained steadfast at 100%. Surface winds returned to an average of 12.7 mph, while winds at 100 meters picked up slightly to 24.5 mph. The lower cloud cover dropped to 88.5%, while the mid and high clouds stayed nearly saturated at 99.0% and 100.0%, respectively. This maintained layer of clouds continued to be influenced by the contrasting wind dynamics, though the overall turbulence seemed to settle into a more rhythmic pattern as the day wound down. The precipitation for the day totaled an impressive 1.78 inches, a testament to the moisture present in the atmosphere. The evening sky showcased thick stratified clouds, with varying speeds giving way to a tranquil yet dramatic end to the day, perfectly depicting the complexities of weather patterns at play.
December 18th, 2025 Timeline
Screenshots with weather data (wind layers, clouds, precipitation)
Weather Info for December 18th, 2025
Sunset: 4:28 PM