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NW Trend For the Win! (1/21-1/22 2022 storm) Obs Thread


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Widespread virga showing up on radar right now for NW NC. Good opportunity for some fun with trigonometry while we patiently wait for a flurry, right?!

Using google maps and FCX radar at 0.5 deg, estimate the distance from the radar site to the nearest radar echo. I got roughy 50 miles from the radar dome to some light echos showing up at VA/NC state line at i77. Multiply the distance by tangent of 0.5 degrees, convert to feet and you get 2300 feet. Adjust for elevation of the FXC dome (2,900 ft) and it’s snowing at 5,200 ft above sea level, or about 4,400 ft above our heads here in the Triad! I can smell my flurry!

Of course this assumes moisture/precip is isotropic, so probably a bit on the conservative side since the dome is to the NW…

Anyway, glad to see you folks down east in the game tonight! Looking forward to the obs flooding in this evening.

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