Wet Monday Evening

April 27, 2009

Lightning1 A few lightning strikes across the region today as heavy showers developed over the Cascades and other hilly areas.  Now they've popped up just about everywhere west of the mountains.  At 8pm a batch of very heavy showers are right over the middle of the Metro area.  Please put your rain totals in the comments below this evening if you are getting soaked at home. 

As you can see, as of 8pm there were no cloud-ground strikes in Oregon, only Washington.  Mesoscale models handled the heavy evening showers pretty well too.

Not much change tomorrow as a cold upper-level trough sits right over us.  Several waves of moisture pinwheel around the main system, which means timing of showers tomorrow and Wednesday is going to be very tough.

Medium and long range model solutions are a mess beyond Friday.  The amount of moisture coming in from the west and undercutting an upper level ridge to our north is the debate.  With a bit of ridging (such as the ECMWF), we get a very warm weekend, well into the 70s.  But the GFS has been much wetter.  Since we already had rain in the 7 Day forecast for the weekend, we decided to leave it in until the details become a bit more clear.

Not much else to report…things are still chugging along at the big 'PTV.  We are in the May ratings period right now, which means at any moment Armageddon could hit (breaking news!).  You better be watching!  These periods always raise tensions just a bit because advertising rates a tv station charges are based on the number of viewers watching.  These ratings periods will soon come to an end, or will at least be far less important, as ratings will be collected all year long here in Portland television market beginning late this summer…Mark Nelsen