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Mesoscale Discussion 276 |
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Mesoscale Discussion 0276
NWS Storm Prediction Center Norman OK
1045 AM CDT Sun Apr 07 2019
Areas affected...Far Southeast AR...Northern MS
Concerning...Severe potential...Watch possible
Valid 071545Z - 071645Z
CORRECTED FOR INCORRECT GEOGRAPHIC REFERENCE
Probability of Watch Issuance...40 percent
SUMMARY...Thunderstorm organization and intensification appears
possible across far southeast AR and central MS and convective
trends will be monitored for potential watch issuance.
DISCUSSION...Regional radar imagery has recently shown a bit more
linear structure with the ongoing thunderstorm cluster across far
southeast AR. This cluster was initialized by the warm-air advection
across a stalled front (extending from far northwest LA across
southeast AR and into northern MS) and was initially elevated.
Recent convective trends suggest the development of a cold pool,
which could increase the potential for surface-based thunderstorm
development as it pushes eastward into an air mass more favorable
for surface-based development. Recent mesoanalysis suggests limited
convective inhibition exists downstream across northern MS.
Additionally, low-level winds are more southeasterly downstream,
increasing convergence along the cold pool. Some veering of these
winds is expected over the next few hours but a favorable window for
thunderstorm organization and intensification will still exist and
convective trends will be monitored closely.
..Mosier/Hart.. 04/07/2019
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MEG...JAN...LZK...
LAT...LON 34109135 34349023 34218877 33268881 32889098 33059176
34109135
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