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Mesoscale Discussion 0488
NWS Storm Prediction Center Norman OK
0538 PM CDT Tue Apr 28 2020
Areas affected...southeast Louisiana through southeast Mississippi
Concerning...Severe potential...Watch unlikely
Valid 282238Z - 290045Z
Probability of Watch Issuance...20 percent
SUMMARY...Thunderstorms may continue to pose some risk for a few
instances of locally strong to damaging wind gusts into early this
evening from southeast LA through southeast MS. Overall threat does
not appear to warrant a WW at this time, but trends will continue to
be monitored.
DISCUSSION...A line of storms extends from far southern MS into
southeast LA, and is moving southeast at 15-20 kt. Instability
decreases with eastern extent downstream from the line with MLCAPE
ranging from around 1000 J/kg over southeast LA to near or below 500
J/kg in the boot heel of MS. Soutwest winds aloft with 30-35 kt
effective bulk shear are parallel to the line, limiting the speed of
forward propagation. The mesoscale environment and convergence along
a well-established cold pool will continue to support multicell
linear structures into the remainder of southeast LA and far
southern MS this evening.
..Dial/Edwards.. 04/28/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...JAN...LIX...
LAT...LON 29869108 30069079 30319044 30729017 31228990 31138943
30408931 29758990 29589081 29869108
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