vendredi 8 août 2014

European Storm Forecast Experiment

Storm Forecast
Storm Forecast
Valid: Fri 08 Aug 2014 06:00 to Sat 09 Aug 2014 06:00 UTC
Issued: Fri 08 Aug 2014 01:23
Forecaster: TASZAREK
A level 2 was issued for France and parts of Benelux mainly for tornadoes, large hail severe wind gusts and excessive precipitation

A level 1 was issued for central and S France, NE Spain, Switzerland and parts of Italy mainly for large hail

A level 1 was issued for France, NE Spain, parts of Benelux and Germany mainly for severe wind gusts

A level 1 was issued for N France and parts of Benelux mainly for excessive precipitation

A level 1 was issued for parts of Sweden and Finland mainly for excessive precipitation

A level 1 was issued for Poland and surroundings mainly for excessive precipitation

A level 1 was issued for parts of Balkan Penninsula mainly for excessive precipitation

SYNOPSIS

Weather in Europe is dominated by two main features: strong trough over NW Europe and ridges of high geopotential field over Russia. This setup provides influx of warm and moist air masses into central European countries and thunderstorms along convergence line from Scandinavia up to Balkans. These storms will remain in low sheared environment and together with low storm motion and high PW values the main threat associated with them will be related to excessive precipitation
and local flash flood phenomena. Most of the unstable air masses over Mediterranean are capped by warm and dry air from Sahara Desert and prevent from convective initiation. Increased probability for the thunderstorms is also expected over N Turkey where weak short wave will provide some QG lift. The most dangerous situation is expected in France where mid and lower tropospheric jet streak will overlap with high boundary-layer moisture and QG-forcing on the cold front heading from west.

Aucun commentaire:

Enregistrer un commentaire