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| Mesoscale Discussion 118 |
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Mesoscale Discussion 0118
NWS Storm Prediction Center Norman OK
0433 PM CST Mon Feb 10 2020
Areas affected...Southern Louisiana and Mississippi
Concerning...Severe potential...Watch unlikely
Valid 102233Z - 110000Z
Probability of Watch Issuance...20 percent
SUMMARY...A cluster of storms with embedded supercells has developed
from southwest Louisiana eastward into southern Mississippi. The
primary threat will be a threat for a tornado and/or damaging winds.
DISCUSSION...Storms have developed in the warm sector south of a
convectively reinforced frontal zone which is currently in place
across northern Louisiana and south central Mississippi. MLCAPE in
this region is around 1000 J/kg with effective shear around 55 to 60
knots. Storm intensity has been somewhat mitigated up to this point
due to limited instability and weak forcing. However, given 0-1 SRH
around 200 to 250 m2/s2 per RAP mesoanalysis and area VWPs, any
stronger updrafts will likely rotate and may pose a threat for a
weak tornado. This threat may increase somewhat with any stronger
storms which interact with the frontal zone. The current activity is
diurnally aided, and thus the threat should only persist for the
next 2 hours or so across far southern portions of Louisiana and
Mississippi. The conditional nature of the threat precludes the need
for a watch at this time.
..Bentley/Guyer.. 02/10/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MOB...JAN...LIX...LCH...SHV...
LAT...LON 30559386 31159366 31949212 32179056 31968937 31368889
30858902 30488947 30299067 30109219 30029318 30189387
30559386
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