Thursday, April 19, 2012

Forecast for Thursday, April 19 through Sunday April 22

Thursday:  Sunny skies.  High near 80 with a low around 50
Friday:  Partly to mostly cloudy, chance of showers late.  High near 78 with a low around 52.
Saturday:  Cloudy with scattered showers.  High near 62 with a low around 40
Sunday:  Sunny with a high near 70 with a low around 45.

A zonal upper-level wind pattern will change as the weekend approaches when a trough ejects from west of the Dakotas.  The trough axis looks to be oriented from the Minnesota/Wisconsin border southward toward eastern Texas on Friday afternoon, possibly providing enough lift for an afternoon thunderstorm.  Attendant to the trough is an approaching storm system that looks to affect the area during the overnight hours on Friday and possibly into the early morning on Saturday.

HPC's surface analysis for Friday morning shows what will likely be a broad swath of rain approaching during the day.
As the front slides to the east, the front will stall upstream of high pressure in the Atlantic, allowing for lingering moisture to keep cloud cover and showers around during most of the day Saturday.  By Sunday, however, showers will cease and clouds will slowly exit.

Lead Forecaster:  Jeremy Young

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