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New Years Winter Storm


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Well either nam is onto something or smoking something. We shall see soon. Nam solution could verify if a more phased system came to fruition. 12km is a cold rain here and 3km nam is ice storm part 2. This is going to be a long 3 days. But still not going to trust nam 3 days out. 

Easy toss on the NAM.

Also, we’re only 2 days out now.


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1 hour ago, Thundersnow12 said:

P sure plumes are not 10:1, slick. 

Correct. It's their other web graphics that use 10:1.

 

Quote

Storm Prediction Center SLR Scheme (SREF Plumes)

WHERE: http://www.spc.ncep.noaa.gov/exper/sref/fplumes/

 

The SPC uses the equation (via Israel Jirak): SLR = 1000 / (100 + 6T)

based on a paper by Boone and Etchevers (2001; eq. 6). T is the warmest saturated temperature (in oC) (using a dewpoint depression < 2oC) in the lowest 300 mb AGL.  A cap is set at 40:1 for temperatures colder than -12.5oC (9.5oF). The wind component of the original equation is ignored, as it led to conservative estimates. The coefficient was modified (from the

original 109 to 100) to converge at 10:1 for T=0oC, and has remained unchanged since its inception.

 

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