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Mesoscale Discussion 107 |
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Mesoscale Discussion 0107
NWS Storm Prediction Center Norman OK
0452 AM CST Sun Feb 16 2025
Areas affected...Northeast Georgia...South Carolina
Concerning...Severe potential...Watch possible
Valid 161052Z - 161315Z
Probability of Watch Issuance...40 percent
SUMMARY...Isolated severe gusts are expected this morning across
parts western and central South Carolina. Weather watch issuance
remains uncertain.
DISCUSSION...Mosaic radar imagery currently shows a squall line
across parts of central Georgia extending northeastward into far
western South Carolina. The line is being supported by strong
large-scale ascent associated with an approaching trough, and by
forcing along a fast-moving cold front. Ahead of the line,
instability is very weak, with surface dewpoints in the 50s F across
western South Carolina and northeast Georgia. The latest WSR-88D VWP
at Greenville/Spartanburg has about 85 knot of 0-6 km shear with 40
to 50 knots of south-southwesterly flow located just above the
surface. An isolated wind-damage threat will be possible with the
stronger cells within the line. Given the very strong low-level
shear, meso-scale vorticies will be possible in the line with
embedded cells that remain surface-based. However, forecast
soundings in far western South Carolina have a sharp near surface
temperature inversion, which should keep any severe threat isolated
and localized.
..Broyles/Gleason.. 02/16/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ILM...CHS...CAE...GSP...FFC...
LAT...LON 35208161 35168219 35048258 34768279 34268314 33768337
33478343 33058296 33018208 33158120 33408066 33838035
34298023 34458026 34728042 34848055 35088106 35208161
35208161
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