"David Parker" wrote in message
...
Just looking at the sorter range of the GFS (as I'm sure the 510 dam stuff
will be gone on the next run)....

Is this a polar low, forecast for Thursday?

http://www.wetterzentrale.de/pics/Rtavn1203.png

David

Doesn't look like a polar low but interesting to note that the last 3 runs
of the GFS have all signalled a similar feature which would give more
general significant snow. The development not evident on the 12Z EC
operational output and only weakly represented in the ensembles.

Jon.