ACUS11 KWNS 211048
SWOMCD
SPC MCD 211047
LAZ000-TXZ000-211515-

Mesoscale Discussion 0047
NWS Storm Prediction Center Norman OK
0447 AM CST Tue Jan 21 2025

Areas affected...Far southeast Texas into south-central Louisiana

Concerning...Heavy snow

Valid 211047Z - 211515Z

SUMMARY...Moderate snowfall with embedded heavier bands will become
more likely over the next several hours in southern Louisiana.

DISCUSSION...The broad upper-level trough across the central/eastern
U.S. is in the process of intensifying this morning. As this occurs,
the upper-level jet along eastern flank of the trough will also
intensify. Increasing mid/upper-level ascent as well as at least
weak lower-level frontogenesis (850-700 mb or so) will promote
favorable conditions for dendritic growth. Moderate snowfall has
already been observed at several stations in southwestern Louisiana
over the last hour. With the most favorable synoptic conditions
expected to occur around mid/late morning, moderate snowfall should
become increasingly prevalent across southern Louisiana in
particular. Some banded structures will be possible which could
produce heavier snowfall rates (0.5-1 in/hr) at least locally.

..Wendt.. 01/21/2025

...Please see http://www.spc.noaa.gov for graphic product...

ATTN...WFO...LIX...LCH...

LAT...LON 29749396 29999432 30579416 30979267 31019185 30809148
30689122 29949132 29709181 29669242 29709266 29749396

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