|Mesoscale Discussion 79|
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Mesoscale Discussion 0079
NWS Storm Prediction Center Norman OK
0853 AM CST Sun Feb 14 2021
Areas affected...far west Texas and southeastern New Mexico
Valid 141453Z - 142100Z
SUMMARY...Several hours of heavy snow will shift southeastward
across the discussion area through around 21Z.
DISCUSSION...Recent METAR observations indicate areas of heavy snow
near the El Paso, Texas area and vicinity. The precipitation in the
area is likely being enhanced by strong lift associated with an
upstream mid-level vorticity maximum amid steep (nearly 9 deg C/km)
lapse rates aloft evident in the 12Z EPZ RAOB and point forecast
soundings. The convective nature of the precipitation will likely
allow for areas of lightning flashes along with localized areas of
1-2 inch-per-hour snowfall rates beneath heavier bands. Orographic
lift may also enhance snowfall rates locally.
Latest guidance (including CAMs) indicate that the ongoing bands of
heavy snow will gradually shift/develop southeastward along the Rio
Grande Valley along and ahead of the path of the mid-level wave.
The expectation is that periodic heavy snow will reach the Marfa,
Texas vicinity by around 19Z. Snowfall should end from west to east
beginning after around 19Z as well.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 32410690 32930653 33090559 32680437 32000317 30730258
29640303 29440418 30260514 31440650 31970679 32410690
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