The big story in weather over much of the country are the extreme high temperatures being reported with 120 degrees being reported in some isolated locations over the desert southwestern US. This heat extends vertically in the atmosphere as well with a very strong ridge in place supporting this heat wave. Twice a day, vertical soundings of the atmosphere are sampled by weather balloons launched from a number of locations around the world. The featured chart looks at the reported height above sea level that a given mandatory pressure level was reported to be at on Sunday morning and the percentile rank of that value against the period of record for the Omaha area. Many of these levels are at record high heights for June as indicated by the percentiles near 100.

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Tags:   sounding