Tuesday, February 12, 2013

Valentines Day Snow Event

With what was a historical east coast snowstorm in the past week.. we are talking about a snow event once again. However, this time around this will not be a historical storm or even a Major Snowstorm but will be more of a light to moderate event depending on where you are located.

We will start this off by saying all models essentially agree on the track of the system ..the problem is that the models do not have a lot of QPF with them. They have cut down on the QPF by having a more weaker southern stream vort and the quickness of this system.

Briefly looking at this system we will start with the wettest model and end with the driest model ..

The above is the 00z UKMET and this falls in as the wettest model and the furthest north model. 
00z GGEM has about a 7 hour window of snowfall (a quick hitter) and it starts as rain in locations like southern NJ , De etc

GFS & NAM are overall quite similar ..the one difference being that the GFS is slightly further north with the QPF shield then the NAM. 
Finally the ECM which is actually the furthest south of all the models and barely brings any QPF up towards KPHL.

When putting together the map we have left the ECM out of the equation and have used more a blend of the NAM/UKMET/GGEM/GFS.
This will not be a major snowfall as we mentioned but more in the way of a nuisance event 
We expect the National Weather Service to issue winter weather advisories for this event. 

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