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Mid to Long Term Discussion 2018


Cary_Snow95

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Notice the last couple of sentences from the GSP NWS discussion.

”LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... As of 140 PM Thursday: Starting at 00Z Monday with the 500mb pattern showing a broad trough across the nation with axis from the Dakotas to Texas or New Mexico. An upper low moves from the Dakotas Sunday evening to Missouri on Monday afternoon to Ohio Tuesday afternoon. This creates a tight height gradient over the SE States with strong jet stream flow overhead. Waves of energy pass through the 500mb flow from the upper Plains to the mid Atlantic coast through mid week although the models are not in the best agreement on timing and strength of these waves. At the surface, the GFS has our area mostly dry except for occasional NW Flow for the NC mountains. The ECMWF develops low pressure at the inflection point on the east side of the upper trough along the stalled front over the northern Gulf Coast Sunday night. The EC moves this low to the SC coast Tuesday morning then off the NC coast Tuesday night. Cool high pressure builds in from the west late in the week. The EC seems to be performing best in the later periods recently. We will lean heavily toward the EC. Max Temperatures will be 5 to 8 degrees above normal on Monday then dropping behind the low with Maxes around 10 degrees below normal Wednesday and Thursday. Mins around 10 above normal Sunday night then around 8 degrees below normal into late week. The EC and GFS have an interesting feature to watch for the end of the week. The models show a low reaching our region on Saturday from Texas. This will be watched closely for consistency.”

 

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3 minutes ago, Queencitywx said:

Meanwhile, the Wednesday clipper was pretty robust this run.

Yep, trying not to look at the day 8/9 storm.

So for the Wednesday potential, the 18z GFS has a large area of north/central NC with 1-2". Surface temps don't look great, so I would say if we can see snow fall from the sky with this event that would be a win.   

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