January 10, 2015 archive

Jan 10

Ice Storm For Some Sunday Evening; Late Night Thoughts…

Just a quick update to give you some fresh thoughts on the next winter storm that will impact central Indiana.

We bracket the hours of 1p-3p for the onset of sleet and freezing rain across central Indiana.

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Coverage and intensity of freezing rain will increase as we progress through the evening hours.  We suggest hunkering down at home (or at a loved ones home) for the Colts game, as roadways will likely become hazardous during the game.

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Early data hot off the press this evening is suggesting Ice Storm Warning criteria (freezing rain amounts of 0.25″, or greater) is met through the heart of central Indiana.

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A fresh push of cold, arctic, air will ooze back into central Indiana during the day Monday. We think overnight lows head back into the single digits Tuesday morning and below zero Wednesday morning.  Needless to say, should power outages take place, a nasty situation will develop with the new push of cold air.

Please stay tuned to your favorite media or means of obtaining weather information, as this will be an impactful event for central Indiana tomorrow afternoon into Monday.

Permanent link to this article: https://indywx.com/2015/01/10/ice-storm-for-some-sunday-evening-late-night-thoughts/

Jan 10

Next Winter Storm Moves In Sunday Afternoon…

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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″ 

Permanent link to this article: https://indywx.com/2015/01/10/next-winter-storm-moves-in-sunday-afternoon/

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