LIGHTING OBSERVED EARLIER THIS EVENING IN DEAL, UK! (credit: Kevin Barclay via Meteo Europe)5/25/2016
DISCUSSION: As strong storms rolled through earlier this evening, an impressive lightning show was on display for a while as intense convective storms moved through parts of the United Kingdom. Note the classic structure of the stepped leaders branching off of the main electric channel of the primary lightning strikes seen in this brief thunderstorm footage! To see other high-impact weather content, click here!
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DISCUSSION: As a strengthening low-pressure system continued making its way across Western-Central Europe over the last couple of days, strong warm-air advection and strong diurnal heating (i.e., consistently above-average temperatures) led to the development of intense thunderstorms. Some of these thunderstorms encountered enhanced vertical wind shear such as this particular storm which moved through Stuttgart, Germany earlier today. As a result of the locally-strong vertical wind shear, these stronger storms responded through the production on rotation within the core of the storm; leading to a rotating updraft and subsequent development of a formidable mesocyclone (i.e., the cyclonically-rotating air-mass found within a supercell thunderstorm throughout the lower-to-middle levels of the thunderstorm) and associated locally-confined hail/wind damage! To read about other high-impact weather content from across Europe, be sure to click here!
DISCUSSION: As strong northerly flow wrapped around the Azores islands positioned in Northeast Atlantic Ocean, absolutely gorgeous lenticular clouds formed over the peaks of individual mountains on both Madalena and Candelaria. Note how there was distinct layering associated with the development of these lenticular clouds; indicating the presence of strengthening winds aloft which induce the formation of an oscillating gravity wave in the middle to upper atmosphere and the lenticular clouds usually form at the base of these gravity waves where moisture tends to condense the most. To read more about this neat atmospheric phenomena, visit this link and for more neat high-impact weather content from across Europe, be sure to click here!
DISCUSSION: As strong storms fired up across parts of Central and Southern Europe earlier today (local time), some of these stronger storms encountered areas of enhanced vertical wind shear. This presence of increased vertical wind shear acted to increase the degree to which the storms developed substantial deep-layer rotation such as this particular storm which was observed over Varna, Bulgaria much earlier today. Note the evident layering which was observed with this particular storm which indicates the presence of particularly strong wind shear in the vicinity of the storm as it matured! For other interesting weather content from across Europe, click here!
HAIL IN STAVROPOL, RUSSIA EARLIER! (credit: Marta Povlen via Denis Lyapkalo via Meteo Europe)5/15/2016
DISCUSSION: Earlier today, deep convective storms developed over in and around the city of Stavropol, Russia. As these storms intensified concurrently with increasing daytime heating and regional warm-air advection; leading to increasing instability which helped to bolster the strength of the updrafts within these thunderstorms. As the strength of the associated updrafts increased this supported the development of larger hail as ice particles remain suspended sufficiently high in the storm in the presence of supercooled water (i.e., water that can remain in liquid-form at temperatures as low as -40°C) and ice particles. For more interesting high-impact weather content from across Russia, be sure to click here!
DISCUSSION: As strong storms rolled through parts of Northern to Central Italy earlier this afternoon (local time) and ended up generating impressive mammatus clouds over many regions in the vicinity of Bologna, Italy! As seen in this truly "textbook" image captured by Andrea Raggini earlie today, you can clearly denote the quite evident mammatus clouds positioned towards the right-side of the image (i.e., denoted by the "bubble-like" descending cloud features with somewhat clearer patches of sky wedged in between them). For more on this and other interesting high-impact weather content from across Europe, be sure to click here!
DISCUSSION: As of earlier this evening, a number of strong storms fired up across parts of Western Europe (including over in Northern France). As you can clearly see in the picture below, one particular storm went tornadic in Picardie, France (located in Northern France). Note the relatively low cloud-base associated with this particular supercell which likely helped to facilitate the development of what appeared to be a tornado! For more neat high-impact weather content across the United States, be sure to click here! 
DISCUSSION: As another day of convective weather raged across parts of Central Europe, impressive amounts of lightning were confirmed as of earlier this morning. One of the particularly high lightning strike concentrations was observed across parts of Central and Southern Ukraine where hundreds (if not thousands) of lightning strikes have been reported! Note the southeastward progression of the storms which can be extracted based on the time of the strikes and the progression of the newest round of lightning strikes as of earlier this morning local time! Very impressive to see such convective storms just to the north of the Black Sea! For more interesting high-impact weather content from across Europe, be sure to click here!
A CLASSIC LOW-PRESSURE SYSTEM JUST WEST OF PORTUGAL! (credit: EUMETSAT.int via Meteo Europe)5/8/2016
DISCUSSION: As a deepening low-pressure system continues to look more and more impressive as of earlier this morning, here is a recent view of this system via the EUMETSAT satellite imager. As you can see in the image below, you can denote the region in which there is a stratospheric intrusion was associated with a very intense low-pressure system as of earlier today. The identified signal for this stratospheric intrusion to be occurring is based on the grayer-looking air mass being injected just to the northwest of this low-pressure system's center of circulation. Only in the more intense low-pressure systems across the Northern Atlantic Ocean, there typically exists more of a tendency for there to be stratospheric intrusions with very intense (or rapidly deepening) low-pressure systems which consequently interact with the tropopause located in the middle to upper parts of the atmosphere. For more on this and other high-impact weather across Europe, be sure to click here!
DISCUSSION: As a low-pressure deepened yesterday to the south of the Alps induced a strong surge of warm/moist air northward during the period from Saturday evening through the first half of the day on Sunday, the stage was set for a prolific mid-Spring snowstorm. Due to the combination of cold-air essentially "locked-up" at higher elevations and the orographic enhancement of air parcels being lifted due to the presence of increasingly sloped terrain along the southern periphery of the Alps mountains, heavy snowfall developed persisted across the Western Alps! Attached below is a great shot of the heavy snowfall which accumulated as of Sunday morning (local time) across parts of Northern Italy! To see more neat weather content from across Europe, be sure to click here!
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