Table of Contents

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Frontal system across Europe with wave development over South and South-eastern Europe and a front intensification over Spain. Special interest is focused on convective developments within the prefrontal area and the thickness ridge over the Balkan.

I. Synoptic Situation for 12 November 06.00 UTC

Overview and frontal diagnosis

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Wave development in the area Sardinia - Corsica

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Intensification of frontal cloudiness and activity by jet streak crossing

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Cloudiness over Italy and the Balkan peninsula in front of the Cold Front: Relative Streams

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II. Development During the next 12 Hours

Frontal displacement with help of the Thermal Front Parameter

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Displacement of the Wave

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Front Intensification by Jet Crossing

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III. Synoptic Situation for 12 November 12.00 UTC

Overview and new aspects

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Diagnosis of front and Wave(s)

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Relative streams: Cloudiness over the Balkan peninsula

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IV. Synoptic Situation for 12 November 18.00 UTC

Comparison of cloud configurations between 12.00 and 18.00 UTC

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Overall situation and frontal diagnosis

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Relative streams

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V. Synoptic Situation for 13 November 00.00 UTC

Introduction for 13 November 00.00 UTC

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Overview and frontal situation

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Relative streams: Frontal and pre-frontal situation

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VI. Development of Thunderstorms and MCSs During the Whole Period

Introduction for the diagnosis of conceptual modles for convective developments

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The period 12 November 05.00 - 07.00 UTC

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The period 12 November 11.00 - 12.00 UTC

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The period 12 November 14.00 - 18.30 UTC

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The period 12 November 21.00 UTC - 13 November 00.00 UTC

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Some summarizing ideas

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