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The British Isles and other parts of northwestern Europe occasionally report thunder and lightning during sleet or (usually wet) snow showers during winter and spring. Scotland registered an episode of thundersnow in the early hours of 4 December 2020, the unusual noise causing alarm among local people. [7]
Or remain as snow showers, or flurry, if the temperature remains below freezing. [5] On the other hand, raindrops might form in a strong updraft in a convective cloud, even at temperature below freezing in the cloud (Supercooling) and freeze later, giving ice pellet showers. [6] Finally, droplets can form and fall in an above freezing layer in ...
Lake-effect occurring when the air at 850 millibars (85 kPa) is much colder than the water surface can produce thundersnow, snow showers accompanied by lightning and thunder (caused by larger amounts of energy available from the increased instability), and, on very rare occasions, tornados. [3]
Here's what to know about thundersnow: Winter snow storm: Fierce winter storm slamming Mid-Atlantic; DC could get a foot of snow Thundersnow observed in St. Louis during winter snow storm ...
The large temperature drop could also yield some accumulating lake effect snow in communities near Lake Ontario and whipping winds with gusts between 50 and 60 mph, he said. Some thunder snow is ...
Convective rain and light precipitation are the result of large convective clouds, for example cumulonimbus or cumulus congestus clouds. In the initial stages of this precipitation, it generally falls as showers with a smaller area and a rapidly changing intensity.
Graupel (/ ˈ ɡ r aʊ p əl /; German: [ˈɡʁaʊpl̩] ⓘ), also called soft hail or hominy snow or granular snow or snow pellets, [1] is precipitation that forms when supercooled water droplets in air are collected and freeze on falling snowflakes, forming 2–5 mm (0.08–0.20 in) balls of crisp, opaque rime.
Current conditions in the Triangle are showers and storms, and a significant cold air mass is about to follow this weekend and early next week. But it’ll be a dry period with no expected ...