|Created with the Web Accessibility Wizard||Slide 18 of 38|
6-hour Eta forecast soundings at PIT (purple) and near DCA (green) valid at 00 UTC on the 9th are shown on this slide. A moist absolute unstable layer (MAUL) is forecast at PIT just below 600 mb. The freezing level at PIT extends up to 16000 feet. The weak instability indicated at DCA is surface based.