Brandon Sullivan
EF5
A large storm system is forecast to move northeast out of the southern plains on saturday. As it does it will deepen rapidly and dump some moderate amounts of snow over IA/IL/MO/WI.
The latest 0z Models have come in to somewhat better line. Indicating the low to move northeast and move through central and southeast Illinois. Current model QPF values would indicate the heaviest amounts of snow from 6-8 inches falling from Kirksville to Ottumwa to Iowa City line.
Also, model forecast temperatures show bitter cold air being pulled in behind the system, this combined with strong winds of 20-30 MPH and near blizzard conditions could cause dangerous wind chill values to be achieved.
Below are some Key model images. Two of them are Snowfall amount forecast, One is the NAM forecast reflectivity (which matches nice with the heaviest QPF) and the final one is an image with surface wind and temp (to show the cold air)
The latest 0z Models have come in to somewhat better line. Indicating the low to move northeast and move through central and southeast Illinois. Current model QPF values would indicate the heaviest amounts of snow from 6-8 inches falling from Kirksville to Ottumwa to Iowa City line.
Also, model forecast temperatures show bitter cold air being pulled in behind the system, this combined with strong winds of 20-30 MPH and near blizzard conditions could cause dangerous wind chill values to be achieved.
Below are some Key model images. Two of them are Snowfall amount forecast, One is the NAM forecast reflectivity (which matches nice with the heaviest QPF) and the final one is an image with surface wind and temp (to show the cold air)
![wintergfs0p5sfc12hraccuwt5.gif](/proxy.php?image=http%3A%2F%2Fimg524.imageshack.us%2Fimg524%2F7341%2Fwintergfs0p5sfc12hraccuwt5.gif&hash=98e2dcf8bbdceab6eb42627f8747b99c)
![wintergfs0p5sfcaccumsnogt1.gif](/proxy.php?image=http%3A%2F%2Fimg339.imageshack.us%2Fimg339%2F6862%2Fwintergfs0p5sfcaccumsnogt1.gif&hash=e2f8e11720c9dccb98ad14960c1c1309)
![nam_ref_048s.gif](/proxy.php?image=http%3A%2F%2Fwww.nco.ncep.noaa.gov%2Fpmb%2Fnwprod%2Fanalysis%2Fnamer%2Fnam%2F00%2Fimages%2Fnam_ref_048s.gif&hash=0acd8718c8039ca221e3208e1350e43e)
![etaGL_2_temp_60.gif](/proxy.php?image=http%3A%2F%2Fwww.weather.cod.edu%2Fforecast%2FETA%2FGL%2FetaGL_2_temp_60.gif&hash=b2031ec59d5e8b303852f2d775d232b9)