Mother's Day Issues Developing Cold Front Dropping Southward
Mother's Day Issues Developing Cold Front Dropping Southward
When an upper air high pressure ridge builds in the east thermometers head up and mainly sunny days dominate. However the upper high that builds in the East this weekend is not like the upper high we had last week that took temperatures into the 90s.
JET STREAM SATURDAY MAY 12, 2018
This upper ridge in the East this for this weekend is different. It is oriented east west instead of more north south. The reason is there is a stong jet stream dropping out of Canada that is suppressing that ridge. This means that as far as the weekend goes, Saturday will be the warmer of the two days with temperatures reaching the 80s. It also means that a cold front looms that will be dropping down from the north.
GFS SUNDAY 2AM MAY 13, 2018
East West front like this can be a problem. They tend to be slow moving as the fight against the strong upper high to the south. If you are in vicinity of the front it will mean showers and perhaps even some thunderstorms running around and this times out at least for Sunday morning before everything starts dropping southward during the afternoon. It also means that temperatures north of the front temperatures will be in the 60s while to the south of it 70s to near 80 seem likely until the front passes. The question is where this boundary sets up.
The GFS and other models seem to be of the idea that the northern jet will be just strong enough to force this front southward to Virginia by Sunday evening. This puts showers in play for our area at least into early afternoon and possibly into the late afternoon and evening. Mother's Day is not look to good at this point.
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