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Unformatted text preview: 100-ktisotachs. C. With these isotachs in place, you should be able to identify a channel of faster winds over the mid-latitudes that generally stretches in an west-to-east direction, with some north-south undulations. This corridor of higher wind speed is the "jet stream," which will be discussed in more detail in Chapter 7. Draw a heavy dark line to represent the jet stream. 12. Figure 1.39 is a meteogram from Harrisburg, PA on February 17, 2003, during the height of the storm that became known as "President's Day Snowstorm II" because it occurred on President's Day that year (and there had been a previous blockbuster snowstorm along the East Coast on President's Day 1979). The hour (in UTC) is across the bottom....
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- Spring '08