NYC Weather Update – Jan 11, 2021

It’s been two weeks now without any appreciable precipitation in NYC and this dry stretch continues this week. A mostly zonal flow regime aloft should provide for generally calm conditions, esp. given a lack of any meaningful supply of moisture. Temperatures should trend into mid-40s with warming westerly downsloping flow modifying the air mass, eventually transitioning to a mild southwest flow later in the week.

Rest of today – mostly cloud with highs in the low-40s. Overnight lows in the low-30s.

Weather Prediction Center surface forecast for 7AM Tuesday. High pressure to our southwest should help drive westerly winds our way.

Tuesday – mostly sunny with high temperatures in the low-40s. Overnight lows in the low-30s.

Wednesday – still mostly sunny with high pressure remaining in control. High temperatures in the mid-40s. Overnight temperatures dropping into the mid-30s.

GFS model 500 mb height and vorticity for 7AM Thursday. Generally flat, zonal flow is seen over our area. However, signs of a big change are visible to the west, over the Northern Plains.

Thursday High temperatures in the mid-40s again with mostly sunny skies. Overnight lows in the mid-30s.

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