Thursday, March 18, 2010

Weekend Snow Storm?!?

Models had continued their questionable outputs in regards to snowfall and transition of rain to snow over the Central Plains on Friday night and Saturday, but are once again coming into a trend towards a solution. This mornings' GFS and NAM both had a fairly similar solution in regards to snow amounts over Kansas/Missouri, but still having slightly different tracks in regards to speed and north/south variability in the surface low. The ECMWF has been fairly consistent in a solution for the past few runs, and via current NWS discussions it would appear that it has the slight edge in regards to forecasting value.

I'll have a better chance during the afternoon today to look at the various models and see what the 18z and early indications of the 00z models have to say.  An update later this evening/tonight will be likely...

Looks like we'll see the change from rain to snow during the overnight Friday, and there should be enough cold air spilling in that we keep the precipitation as snow even as we hit the daylight hours Saturday. A lot of questions regarding snowfall amounts not only because of the model variability, but the fact that we will have temperatures in the 60s and sunny skies for today and Friday and we'll see rain before the change which will allow the wet surfaces to melt the initial snow as well.  If we had cold ground and no initial rainfall we could easily be looking at 6-12" with even higher isolated amounts across portions of Kansas/Missouri. However, with the questions raised above it would appear that we will struggle to see anything higher than a 4-6" widespread swath.  Again, I'll update more later on this evening.

In regards to the weekend event, I'm entertaining the idea of setting up a live stream for the duration of the storm.  For the most part this would be at a stagnant location, but if requested by any local media sources could become a live mobile stream.

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