MODIS Perspective on the Mid-South Snow in AWIPS II

The Huntsville County Warning Area received widespread 3-5 inch snowfalls Wednesday night, with a few sites reporting as high as 10 inches!  While it’s melting quickly today with temperatures in the mid and upper 30s, the snow cover did hang around long enough to be captured by the mid-morning MODIS pass (though we are on the very edge of the pass, so the bowtie distortions are noticeable).  That might be nothing new, but this is the first time we’ve been able to view such imagery in AWIPS II.

MODIS Snow/Cloud RGB Image valid 1546 UTC 13 February 2014

MODIS Snow/Cloud RGB Image valid 1546 UTC 13 February 2014

MODIS True Color Image valid 1546 UTC 13 February 2014, viewed in AWIPS II CAVE

MODIS True Color Image valid 1546 UTC 13 February 2014, viewed in AWIPS II CAVE

The Snow-Cloud RGB is particularly illuminating, as it effectively illustrates the downslope-induced cloud breaks over northern Georgia.

Great job to the SPoRT AWIPS II team on helping us get these data back into AWIPS!  There are still some kinks to work out, but this essentially restores the SPoRT data feed that was in place before our A2 upgrade in June 2012.

3 thoughts on “MODIS Perspective on the Mid-South Snow in AWIPS II

  1. It will be interesting to see how the soil moisture values change over time and what the impact to temperatures are for the forecast in GFE. If you folks are using BOIVerify there may be some interesting model errors/biases to look at post event. Also, I am curious if fog/low clouds will develop over that area in the coming days and how will the NTmicro product look.

  2. ABQ, I didn’t mention that there was quite a bit of rain before it changed to snow–the source of great consternation. So the LIS relative soil moisture is uniformly pretty high across the region and doesn’t necessarily focus on our area (at least not yet).

    We are definitely noticing a difference in air temperature for snow vs. non-snow areas, but fog will be interesting to watch since it’s melting so fast.

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