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Topographic map showing elevations (m) in the Rockwell Pass area of Sequoia National Park. An arm of the Kern River Canyon extends toward the Rockwell Pass area, as shown in the inset in Fig. Schematic topographic cross section along two profiles approximately through the location of Rattlesnake RAWS (shaded, A–B) and just north of Rockwell Pass (outline, A–C) looking to the north. (Background outline map: Terry Dorschied, Arizona Geographic Alliance.) Outline map showing location of Rockwell Pass, the Rattlesnake RAWS site, the Kern River Gorge, and Kings Canyon/Sequoia National Parks (inset) in relation to sounding and radar sites utilized in sounding and hodograph reconstructions and radar analyses, as explained in text. Note the sharply defined backsheared anvil and overshooting top at left on the Rockwell Pass storm’s west end.
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There is an intervening storm between the photographer and the cumulonimbus that would shortly produce the Rockwell Pass tornado. Inset shows photographer’s approximate position on the 2251 UTC GOES-10 visible satellite image, and vantage point relative to the cumulonimbus clouds shown in the picture. Panoramic photograph of the thunderstorm that spawned the Rockwell Pass tornado taken on 7 Jul between Lone Pine and Keeler, CA, at around 2300 UTC (1600 PDT), looking to the northwest from Highway 136. Rockwell Pass is in the low spot in the center of the photo. The sense of the rotation is counterclockwise. Funnel cloud and cloud-base swirl associated with developing tornado above Rockwell Pass in Sequoia National Park at 2332 UTC.