Funnel and waterspout (10-07-2007)

A perfect day for the occurence of spouts! After taking off a few hours earlier I went to the IJssel- and Markermeer. Already near Almere I saw a vanishing funnel; probably above land. Later on several thunderstorms appeared above the IJsselmeer; with a lot of patience at least I saw first a tuba/ funnel appearing developing into a waterspout that didn't condense fully.

Estofex forecast: 
"     ...Benelux, Germany area...
Very weak winds and strong low-level buoyancy under the cold pool create high chances of numerous waterspouts and landspouts. This has already been confirmed yesterday over UK and the Netherlands. Profiles such as 00Z ETGB Bergen are very favourable, while also the less unstable looking profiles will have significant SBCAPE when temperatures go to 17-18 degrees.


The weakest 10m winds and strongest buoyancy are progged over Netherlands and northern Germany, where the level 1 is drawn.


A necessary convergence zone for spinning up vorticity is currently (07-08Z) present over Netherlands to Denmark along the coast and moving inland. Suspect are any storms in regions where 10m winds are weak or from erratic directions. Slow moving thunderstorms may create local flash flooding.  "