Circumstances were probably enough for waterspout formation, so I decided to drive to the Flevoland region. Because the convection would start from the west; I drove along the coastline (A4 The Hague- Amsterdam) and so did a lucky shot.
Convection along the coastline caught my attention and when underneath the characteristic (8 UTC)tuba- form appeared I took the way to Hillegom. There must have been at least 4-5 funnels/ waterspouts at approximately 'Katwijk', 'Noordwijk' and south of 'Zandvoort'. The events were between 4-20 kilometres away.
The rest of the chaseday near the IJ and Markermeer was a convective feast, but I only spotted one uncertain funnel.
There were at the Northern part of the Netherlands several tremendous waterspouts as well.
short compilation:
More about this day e.g.on:
http://www.youtube.com/watch?v=2HmEn1t6X4A
http://www.weerwoord.be/includes/forum_read.php?id=1466475&tid=1466475
