02-09-2015 23:02 | Estofex | m.b.t. 03-09-2015 t/m 04-09-2015
Storm Forecast
Valid: Thu 03 Sep 2015 06:00 to Fri 04 Sep 2015 06:00 UTC
Issued: Wed 02 Sep 2015 23:02
Forecaster: GATZEN
A level 2 was issued for the south-east Alpine region and the northern Adriatic mainly for large hail and severe wind gusts and to a lesser extent tornadoes and excessive rain.
A level 1 was issued for the southern and eastern Alps and northern Balkans mainly for severe wind gusts and to a lesser extent large hail, excessive rain, and tornadoes.
A level 1 was issued for north-eastern Spain and western Mediterranean mainly for large hail and severe wind gusts.
A level 1 was issued for the northern Ukraine and south-western Russia mainly for severe wind gusts and to a lesser extent large hail.
A level 1 was issued for western Turkey mainly for large hail.
A level 1 was issued for the Atlas mountains mainly for large hail.
A level 1 was issued for parts of the North Sea mainly for waterspouts.
SYNOPSIS
A deep trough has formed across western Europe with its main vort-max centered across the North Sea. A moderate to strong south-westerly mid-level flow is expected across large portions of the forecast region. A weak mid-level trough slowly moves east across the Aegean and Turkey. Cold air has spread into the north-western half of Europe. The frontal boundary has become parallel to the flow from the west Mediterranean to the northern Balkans and south-west Russia, and frontal waves can amplify over the eastern Alps and the Ukraine. These waves can allow some overlap with moisture along the frontal boundary with steep lapse rates conserved across the Balkans and the Ukraine. Given strong vertical wind shear due to strong south-westerly mid-level winds, severe thunderstorms are expected.
DISCUSSION
Southern North Sea
Near the trough centre, weak vertical wind shear and good low-level buoyancy create a favourable environment for waterspouts.
(alleen de voor NL en aangrenzende streken relevante tekstdelen overgenomen, klik hier voor de volledige forecast.)
Verwachtingen/waarschuwingen
