Tuesday, January 18, 2011

9:30am Weather Update 1/18

I am taking a closer look at the details of the Thursday storm that will impact southeast/east Missouri, southern Illinois, western Kentucky and central Indiana.

Not all of the data is in from the morning computer models I look at but the data that is keeps me a little interested in the storm.

I am still relatively confident that this storm will be all snow so lets talk about how much liquid is available.

This morning's 12z NAM model is putting down the following liquid precipitation amounts:

  • Farmington, Mo - 0.43"
  • Cape Girardeau, Mo - 0.25"
  • Indianapolis, In - 0.48"
  • Paducah, Ky - 0.20"
  • St. Louis, Mo - 0.35"
Generally speaking, I am thinking we will see a 9:1 to as much as a 12:1 snow ratio for the KFVS viewing area. The ratio may be a little higher for St. Louis and Indianapolis.

When we do the math we get the following snowfall amounts:
(City - Liquid | 9:1 ratio | 12:1 ratio)
  • Farmington, Mo - 0.43" | 3.9" | 5.1"
  • Cape Girardeau, Mo - 0.25" | 2.2" | 3"
  • Indianapolis, In - 0.48" | 4.8" | 6.2"
  • Paducah, Ky - 0.20" | 1.8" | 2.4"
  • St. Louis, Mo - 0.35" | 3.5" | 4.9"
This is just one of four computer models I look at. Some places to will see less, others may see slightly more, but generally I still think 2" to 4" of snow will be possible across the KFVS viewing area. In central Indiana I think there could be anywhere from 4" to 7" of snow.

And as a little teaser, it looks like we could see an addition round of snow with a fast moving system Sunday night through Monday morning. Stay tuned...


27What are the snow fall amounts for Illinois preferably Jackson County?

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