Public weather briefingAfter the current snow storm made its way through Madison, cold air moves in. Below zero temperatures are in store for Wednesday night, which will lead into a very cold Thursday with highs expected around 10 degrees. It will be mostly clear for the next two days before the next system moves through bringing possible precipitation and warming temperatures. Highs for the weekend are expected to be in the middle to upper 20s and possibly hit 30. Along with this likely comes mixed precipitation, however, on Saturday and Sunday.
Tonight. Slight chance of snow showers after the initial snow storm, before clearing out in the night. Low around 7 degrees with light winds.
Wednesday. Some clouds and sunny with light northwest winds. High around 18 degrees.
Wednesday night. Clear and frigid. Low around -10 degrees with light winds.
Thursday. Sunny and cold. Light winds with negative wind chills. High around 10. Low around 5.
Friday. Clear very early then mostly cloudy and warmer. High near 30 with a light south wind. Low just under 20.
Outlook for Saturday through Monday. Mostly cloudy with a chance of precipitation on Saturday and Sunday before clearing out to a partly sunny Monday. Highs consistently in the middle to upper 20's with a low around 20 on Saturday cooling to a low around 10 Sunday and Monday [CONFIDENCE: MEDIUM]
This sounding from Davenport, Iowa this morning is a view of the atmosphere. It is showing high moisture levels in the lower atmosphere from the surface to 850 mb. The high levels of precipitation associated with this storm is likely due to a upward vertical velocity maximum centered in the area of the sounding as well as frontogenetical forcing.
Trailing behind the low pressure system, an anticyclone from southern Canada moves down into the northern midwest bringing clear conditions and very cold temperatures. These conditions will last from Wednesday afternoon to early Friday, before the system moves through and a secondary trough moves into the area from Canada bringing up the next possibility for precipitation.
Associated with this trough, is warm air advection rising the temperatures from the 10's to the middle to upper 20's. With this rise in temperature, the type of precipitation is still unsure, so we expect the possibility of mixed precipitation on Saturday and more likely snowy conditions on Sunday if precipitation occurs due to the cooling temperatures.