Derecho May09 national radar animation (noise reduced)

National weather radar of the May '09 derecho series in the US. Described at http://en.wikipedia.org/wiki/May_2009_derecho_series. Timestamps are UTC. In parts of the Mark Twain National Forest in Missour up to 80 of the trees were downed by microbursts of up to 100 mph on May 8. (We're not used to hurricanes here!) More at http://egb13.net/2009/08/may-2009-derecho-series/

This is a repeat of http://www.youtube.com/watch?v=j59PHXblR5A with a lot of the ground-clutter noise removed. See http://egb13.net/2009/09/noise-removal-from-noaa-weather-radar/

Category:

Science & Technology

Tags:

• weather
• radar
• time lapse
• timelapse
• derecho
• animation

[16fcali]

Any idea why sunrise causes that large number of small weather events?

[egb13]

If you're talking about what I think you're talking about, I believe that it's prior to sunrise and is caused by ground scatter under certain radar propagation conditions.  It's not caused by any sort of precipitation. I wrote a short blog entry about it that you can find by following the link in my profile if you're that interested. The title of the entry is "Those radar spots".

[talladegajunkie1439]

@egb13, it could be fog lifting.

[MasterRPGr]

I remember this. I live in NE Tennessee