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Mesoscale Discussion 47 | |
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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 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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