ACUS11 KWNS 020339
SWOMCD
SPC MCD 020338=20
ALZ000-MSZ000-LAZ000-020445-
Mesoscale Discussion 2299
NWS Storm Prediction Center Norman OK
0938 PM CST Fri Dec 01 2023
Areas affected...Southeast LA and coastal MS
Concerning...Tornado Watch 713...
Valid 020338Z - 020445Z
The severe weather threat for Tornado Watch 713 continues.
SUMMARY...The threat for a tornadic supercell or two should increase
over the next couple hours across southeast LA, including the New
Orleans metro area.
DISCUSSION...Long-lived convective cluster across south-central LA
will likely continue east-northeast into the early morning hours
across southeast LA and coastal MS. An embedded supercell has
recently intensified over the Assumption Parish vicinity, and
additional supercell development will be possible to the southwest
of this storm amid strong mid to upper-level speed shear. Low-level
hodographs are also in the process of enlarging, albeit from
initially small curvature, and should continue to do so for the next
several hours. Time-series of the TMSY wind profile confirms 0-3 km
SRH has steadily held above 250 m2/s2 and a longer-lived supercell
may evolve out of the Assumption Parish storm as it approaches the
greater New Orleans/Lake Pontchartrain area through midnight.
..Grams.. 12/02/2023
...Please see
https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9Qq0DPY54DPHHrr-D1ApEdnQEDM5m3r1sdlwqr0EtgbCk3UzwQ0HFa5wqjQoc_iQmt0esQ6Et= 2ZjkotBxfxo3xWPuW8$ for graphic product...
ATTN...WFO...MOB...LIX...LCH...
LAT...LON 29989107 30249038 30508962 30778897 30738857 30598830
30088845 30078864 29938889 29718943 29419036 29249078
29359127 29649153 29879142 29989107=20
=3D =3D =3D
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