Wednesday, February 11, 2009

Hang on to your hats!

The wind behind this morning's squall line seems to be packing quite the punch. I've received reports of metal facade being ripped off the the roof of a building, a fairly good size tree down (6-8"), and a wooden privacy fence blown over, all in Bartlett, as well as tree "debris" (twigs, small branches, and leaves) strewn everywhere. You can see the latest conditions from Bartlett on my WXLIVE! page, where the max wind gust recorded so far today is 39 mph. A High Wind Warning remains in effect until 3pm with a Wind Advisory after that until 7pm.

Also, interesting to look at from my Davis Vantage Pro2 personal weather station, are graphs of conditions from the frontal passage this morning (see below). The front passed over the sensors just before 7am (the red lines on the graphs). Note especially the substantial drop (and subsequent rise) in barometric pressure, the temperature and dewpoint dropping after it passed, and the wind shift from south to southwest/west. Also, the wind speed peaked at 36 mph when the front passed, then started rising again after 8am behind the front to a max gust of 39 mph a little after 11am. Very nice data signature with this frontal passage!

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