Storm Prediction Center
Upper Air Maps

sfc @160411/1200 sfc @160412/0000
925mb @160411/1200 925mb @160412/0000
850mb @160411/1200 850mb @160412/0000
700mb @160411/1200 700mb @160412/0000
500mb @160411/1200 500mb @160412/0000
300mb @160411/1200 300mb @160412/0000
250mb @160411/1200 250mb @160412/0000