Storm Forecast Valid: Mon 11 May 2015 06:00 to Tue 12 May 2015 06:00 UTC Issued: Mon 11 May 2015 05:06 Forecaster: GATZEN
A level 1 was issued for southern Greece mainly for large hail and excessive precipitation.
High across south-west Europe ridges into Central Europe. Downstream, a deep trough affects eastern Europe. Embedded digging vort-max crosses the southern Balkan Peninsula and enters the east Mediterranean south of Greece. In the wake of the trough, a swath of cool air below 800 hPa affects a broad region from the Baltic Sea across Poland and western Ukraine into the Balkans. With increasing ridging from the west, the cool air is capped and deep lapse rates will be quite poor across eastern Europe. Additionally, low-level moisture is limited. Better chances for deep moist convection exist across the Balkans.