Monday, September 16, 2013

Above normal temps & a mostly cloudy work week

Synopsis

Surface analysis this morning shows a weak cold front extending through the metro pushing south. It is hard to call this boundary a cold front due to the fact that it is not bringing cold air with it at all. The main effect this boundary will have on the metro will be the increase of clouds and moisture as winds will swing around to east and then south bringing a slow rise of humidity values each day.

Analysis

This weeks weather pattern is not terribly exciting with a weak ridge of high pressure building over the area and moisture/clouds being wrapped in clockwise around this high pressure for much of the week.

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NAM modeled mid-level (10,000') moisture for Tuesday at 7 PM.
As a result expecting slowly increasing humidity and slightly above average temperatures (near 90). Also cannot rule out some isolated showers or thunderstorms, mainly Wednesday and Thursday in advance of our next cold front heading into the weekend.

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GFS modeled low-level (5000') temperatures and wind speed/direction Thursday at 7 PM.
By Thursday evening the high pressure has shifted well east of the area as the warm-sector builds with the approaching mid-latitude cyclone to our north. The pattern heading into this weekend will be much more interesting and something to keep an eye on with plenty of chances of rain.

[EP: A cold front will pass through the metro Friday or Saturday, bringing unsettled weather, followed by clearing and cooler temps on Sunday. William will have more detail on that later this week.]

William's Memphis Forecast

Monday: Increasing clouds with a high of 91, low of 69.

Tuesday: Mostly cloudy with a high of 89, low of 70.

Wednesday: Mostly cloudy with a high of 92, low of 71. Slight chance of shower/t'storm.

Thursday: Mostly cloudy with high of 91, low of 72. Slight chance of shower/t'storm.

--William Churchill, MWN Social Media Intern

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