Thundersnow and the NALMA

There is always excitement in Huntsville when there is a chance for a good snow event.  Already, at this point 2 inches of snow have fallen and the event has just started.  However, we can always make things a little more exciting with thundersnow!  Around 0434 UTC, a single flash of lightning was detected by the NALMA and supported by all of the Facebook and Twitter posts by the weather folks here in town.  The two images show the overall radar reflectivity observations (in clear air mode) at the time of the flash (Figure 1) and the raw NALMA observations as seen on the SPoRT web page (Figure 2) .  The flash likely originated in the cluster of high source densities over Huntsville proper and then extended to our southwest traveling several tens of kilometers.  Needless to say, this will be an interesting event to revisit and analyze.


Figure 1: Huntsville radar reflectivity (from Hytop) at the time of the lightning flash during the thundersnow event on 10 January 2011.

Figure 2: Lightning flash observed by NALMA during the thundersnow event at 0434 UTC on 10 January 2011.

3 thoughts on “Thundersnow and the NALMA

  1. Just a note on the reflectivity. The radar didn’t “show” any reflectivity over 30 dBZ because it was operating in clear air mode. The ARMOR radar showed reflectivity up to 40 dBZ or higher in local heavy bands!

  2. Jon, thanks for the clarification. I have edited the post. Obviously, I was excited about the thundersnow and ignored how radar is used!

    I am glad everyone out in Albuquerque enjoyed the post. We saw a few other flashes this evening, so it will be fun to go back and look at everything.

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