Forecast Update
Valid: Sat 09 Jul 2011 14:00 to Sun 10 Jul 2011 06:00 UTC
Issued: Sat 09 Jul 2011 14:18
Forecaster: GROENEMEIJER

A level 1 was issued for west-central France, Switzerland, extreme norhtwestern Italy, northwestern Austria and extreme southern Germany, mainly for large hail.

SYNOPSIS

Refer to the original storm forecast...

DISCUSSION

Alps and vicinity...

Have adjusted level 1 somehwat to account for high latent instability inferred from surface observations showing 18-20 C dew points and indicating mass convergence across Lower Austria.