Highlights:
- Dangerous Cold Continues This Morning
- Winter Storm Arrives Sunday Afternoon
- Another Push Of Below Zero Air Mid Week
- Watching Thursday
Sunny Today; Next Winter Storm Arrives Tomorrow…While it’s always nice to see the sun, it won’t do much to warm temperatures this afternoon. Another frigid morning (all reporting sites across central Indiana went below zero again this morning) will only “warm” into the upper teens this afternoon.
The big focus of this forecast package has to do with what lies ahead Sunday afternoon through Monday morning. Model data continues to suggest central Indiana deals with another winter storm. A model average puts down between 0.30″ to 0.50″ (liquid equivalent). On a standard 10:1 ratio, that would be between 3-5″ of snow, and if that 0.30″-0.50″ all fell in the form of freezing rain we would be looking at a damaging ice storm. As of now it appears as if we deal with the entire wintry precipitation gamut.
Moisture will surge north Sunday afternoon and we bracket the hours between 3-5p for the onset of wintry precipitation. Low pressure will organize along the Gulf Coast and move northeast into the Tennessee Valley Monday morning. At the same time, another dome of arctic high pressure will begin to sink south. The end result should be a wintry mix of sleet and freezing rain that eventually transitions to snow through the nighttime Sunday. Obviously timing that transition will be crucial in determining just how much snow and ice accumulates. As of now we’ll split the expected liquid equivalent down the middle and say 0.40″ falls across central Indiana. Of that 0.40″, 0.20″ may fall as freezing rain (glaze) and 0.20″ may fall as snow (which would stack up to a couple inches on the standard 10:1 ratio). Areas north of Indianapolis run a better chance of seeing the transition to snow faster while areas south of the city run a higher chance at accumulating more freezing rain. Stay tuned.
We go back into the deep freeze Tuesday-Wednesday and eye Thursday for the possibility of another storm system.
Upcoming 7-Day Precipitation Forecast:
- 7-Day Snowfall Forecast: 1″ – 3″
- 7-Day Freezing Rainfall Forecast: 0.20″