Tuesday, September 21, 2010

24-Hour Td Changes




Top image is a heavy storm south of Kitt Peak around 4 pm today (21 Setember 2010), while middle image shows a storm building over the Catalinas about the same time.
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Bottom image is from mike Hardiman of El Paso - it shows 24-hour dewpoint changes at 1900 UTC today. If your eyes are up to it you can see a substantial area of the lower Colorado Basin has experienced Td increases of 40 to 50+F during the past 24-hours. quite mazing. Mike writes:
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Thought you'd appreciate seeing this plot of 24hr Dewpoint Change over the Southwest. Certainly a nice surge... enough to get friends in Yuma complaining this morning. I told them to head to the beach to cool off. Puerto Penasco (Rocky Point) currently 90/66, SSW wind 25 mph, gusting to 30. Not pleasant! Increasing PW here has lead to some heavy rainfall. That first trough kept some small lines of storms going through last night... instantaneous rainfall rates up to 2"/hr in Silver City... and a lot of 1-1.50" reports up that way. Mostly 0.5-1.00" in Las Cruces... and 0.13" at my house in Santa Teresa. Also had a gauge near Cloudcroft in the Sacramento mountains pick up 1.10 inches this afternoon, most of which fell within an hour. Ridge axis is overhead here... very little steering flow to work with. Wednesday looks especially interesting! Plenty of moisture at all levels to our south and southwest. PWs approaching 1.70 inches?


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