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Intense severe thunderstorms in eastern France, Luxembourg and Germany last night – August 1, 2017

Widespread severe thunderstorms hit eastern France, parts of BeNeLux and western Germany last night and this morning (July 31/August 1).

Lightning tracks of individual storms mark the zone of severe thunderstorms late last night and this morning over France, Luxembourg and Germany (and W Poland). Over 276 000 lightning flashes were detected in the region over the past 24 hours! Map:

A volatile setup over central-eastern France and central Germany yesterday produced widespread severe thunderstorms over the region. An unstable atmosphere, with moderate to high instability with MLCAPE in 1000-2000 J/kg range, overspread by a strong mid-level jetstream, to produce about 40-50 kt deep-layer shear; an environment conductive for formation of intense supercell thunderstorms.

Intense discrete thunderstorms, including supercells formed across W-CNTRL-E France. One particularly intense supercell tracked east of Reims. The supercell certainly produced significant hail, we are still gathering reports.

Intense discrete supercell ESE of Reims, E France just before midninght CEST.

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Airborne view of intense thunderstorms over eastern France at dusk yesterday, July 31. Photo: Lucia Ginestri.

In the morning hours, severe thunderstorms with intense damaging straight line winds and large to very large hail hit the vicinity of Frankfurt, W Germany. Jonas Piontek of Gewitterjagd provided live coverage of the storm.

Approaching QLCS with a spectacular gust front and arcus cloud, as captured by Deutscher Wetterdienst – H.R. Henkes in Rheinstetten and Rüdiger Manig in Neuhaus, Germany. Some exceptional stroboscopic lightning rates were produced by these storms!

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Approaching QLCS in Langenwetzendorf, SE Germany this morning. Photo: Tankstelle Wildetaube.

Lightning over Straubing, Germany. Photo: Stefan Dantinger.

This article is being updated as reports are coming in, so check back soon! Also, feel free to report if you were on these thunderstorms!

Severe supercells and hailstorms in CNTRL-E France - July 30, 2017
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