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February 12-13 Storm IV, Model Discussion


stormtracker

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Just a caution to everyone posting and looking at the snowfall totals from the RR and HRRR.  There seems to be something funny with the algorithm where it is spitting out snow totals even when the model suggests non-snow accumulation. 

 

An example from the latest RR.  10-11z total snowfall, 0.5-2" in the metro area.  But, 925mb temps above 0, suggesting sleet.

 

post-1746-0-44978800-1392272190_thumb.pn

 

 

post-1746-0-37274200-1392272202_thumb.pn

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Just a caution to everyone posting and looking at the snowfall totals from the RR and HRRR.  There seems to be something funny with the algorithm where it is spitting out snow totals even when the model suggests non-snow accumulation. 

 

An example from the latest RR.  10-11z total snowfall, 0.5-2" in the metro area.  But, 925mb temps above 0, suggesting sleet.

 

attachicon.gif1hsnw_t3sfc_f07.png

there is also a soundings link with these http://rapidrefresh.noaa.gov/soundings/displayMapLocalDiskDateDomainZip.cgi?keys=rap_jet:&runtime=2014021304&plot_type=skewt_IAD_72403&fcst=07&time_inc=60&num_times=19&model=hrrr&ptitle=Model%20Soundings&maxFcstLen=18&fcstStrLen=-1&domain=skewt&adtfn=1

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