Severe Storm Outlook Narrative (AC)
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979
ACUS11 KWNS 200445
SWOMCD
SPC MCD 200444
TXZ000-200645-
Mesoscale Discussion 1338
NWS Storm Prediction Center Norman OK
1144 PM CDT Wed Jun 19 2024
Areas affected...Deep South Texas
Concerning...Tornado Watch 437...
Valid 200444Z - 200645Z
The severe weather threat for Tornado Watch 437 continues.
SUMMARY...Occasionally strengthening showers and thunderstorms may
continue to be accompanied by potential for a brief, weak tornado
into the 1-3 AM CDT time frame.
DISCUSSION...As Alberto slowly progresses toward the Mexican Gulf
coast, a broad belt of moderately strong cyclonic easterly low-level
flow (including 40-50 kt around 850 mb) will likely be maintained to
its north, across and inland of Deep South Texas coastal areas into
the overnight hours. Beneath this regime, moderately large
clockwise-curved low-level hodographs may be maintained at least
several more hours. Coupled with the potential for appreciable
upward vertical motion within the lowest couple of kilometers above
ground level, aided by the instability associated with a tropical
moist boundary layer (including upper 70s to near 80F surface dew
points), this will continue to contribute to an environment
supportive of occasionally intensifying low-level mesocyclones
within scattered inland progressing convection.
..Kerr.. 06/20/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...CRP...BRO...
LAT...LON 27709991 28059863 28299699 27179662 26719719 26079757
25759871 27129981 27709991